JPS62290478A - Grip hearing confirmation instrument - Google Patents
Grip hearing confirmation instrumentInfo
- Publication number
- JPS62290478A JPS62290478A JP13256986A JP13256986A JPS62290478A JP S62290478 A JPS62290478 A JP S62290478A JP 13256986 A JP13256986 A JP 13256986A JP 13256986 A JP13256986 A JP 13256986A JP S62290478 A JPS62290478 A JP S62290478A
- Authority
- JP
- Japan
- Prior art keywords
- grip
- pressure sensor
- shape
- pressure
- strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012790 confirmation Methods 0.000 title 1
- 230000004044 response Effects 0.000 claims description 4
- 230000006870 function Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 210000005036 nerve Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000000578 peripheral nerve Anatomy 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
Landscapes
- Electrophonic Musical Instruments (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
【産業上の利用分野〕
この発明は、人体の機能、特に握力の増強或いは機能回
復訓練等に使用される健康用品としての握力聴認器具に
関するものである。[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] This invention relates to a grip force auditory device as a health product used for the functions of the human body, particularly for strengthening the grip strength or training for functional recovery. It is related to.
このような握力を計るための従来の器具としては、握力
の強さが指針の指示する数値で示されるもの、握る運動
回数がカウントされてそのカウント数を表示するもの、
或いは握る動作に伴ってカチカチといった音が発せられ
るもの等が一般的である。Conventional devices for measuring grip strength include those that indicate the strength of the grip with a numerical value indicated by a guide, those that count the number of gripping movements and display the counted number,
Or, it is common that a clicking sound is emitted as a result of the gripping action.
しかしながら、前述の何れの器具も単なる握力計測或い
は運動補助具としての機能を有しているに止まり、これ
の使用者に極めて単調な運動を強いるものである。従っ
て、これらの器具を継続的に使用することが苦痛となり
、健康用品としての目的を達し得ていないのが実状であ
る。However, all of the above-mentioned devices only have the function of simply measuring grip strength or as an exercise aid, and force the user to perform extremely monotonous exercises. Therefore, the continuous use of these devices is painful, and the actual purpose of these devices as health products has not been achieved.
この発明は、このような問題点に堰みてなされたもので
あり、発音機能を具備させることによって使用者が楽し
みながら握力の増強や機能回復訓練等を行なうことので
き、またその発達度、回復度等を知ることのできる握力
聴認器具を提供しようとしてなされたものである。This invention was made in view of these problems, and by providing a pronunciation function, users can enjoy strengthening their grip strength and training for functional recovery. This was done in an attempt to provide a grip strength auditory device that can determine the grip strength.
この発明の握力聴認器具は、上記課題を達成するために
、手の平に把持できる外形を有し内方への加圧による変
形に対して復元する弾性を有する保形体と、この保形体
の内方への加圧力の強さに対応して変形し、かつ電気抵
抗値が連続的に変化する圧力センサと、この圧力センサ
の出力電気信号の変化に対応して出力音量および発音時
間等を可変制御される発音装置とを備えてなる構成を要
旨とするものである。In order to achieve the above-mentioned object, the grip force auditory device of the present invention includes a shape-retaining body that has an outer shape that can be grasped in the palm of the hand and has elasticity to restore itself to deformation due to inward pressure, and an inner part of this shape-retaining body. A pressure sensor that deforms in response to the strength of pressure applied to one direction and whose electrical resistance value continuously changes, and the output volume and sound duration are variable in response to changes in the output electrical signal of this pressure sensor. The gist is a configuration comprising a controlled sound generation device.
上記構成としたことにより１手の平に把持してこれを握
り締めることにより、その握力の強さに応じて保形体が
内方に変形し、この保形体の変形度合いに応じた圧力が
圧力センサに加わって、この加圧力に対応して圧力セン
サの電気抵抗値が低下し、この電気抵抗値の低下に反比
例して発音装置への供給電流が増大し、それに応じて発
音装置の出力音量が増大し、また、握る継続時間に応じ
て発音時間が長くなり、握力の強さを音として聴認する
ことができる。With the above configuration, by gripping it in the palm of one hand and clenching it, the shape-retaining body deforms inward according to the strength of the grip, and pressure corresponding to the degree of deformation of the shape-retaining body is applied to the pressure sensor. Then, the electrical resistance value of the pressure sensor decreases in response to this applied force, and the current supplied to the sound device increases in inverse proportion to this decrease in electrical resistance value, and the output volume of the sound device increases accordingly. In addition, the duration of the grip becomes longer depending on the duration of the grip, and the strength of the grip can be heard as a sound.
以下、この発明の好ましい実施例を図面に基づいて詳細
に説明する。Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.
第１図ないし第３図は、それぞれこの発明の１実施例で
ある握力聴認器具の断面図、Ｉ！！気回路図および使用
状態の斜視図を示す、これらの図において、この握力聴
認器具は、シリコン層からなる保形体１により、第３図
に示すように手の平に把持できる程度の大きさの球状の
外観形状に形成されている。この保形体ｌの表面は、導
電性繊維２．３を表裏両面にそれぞれ貼着した感圧ゴム
４で被覆されており、これら導電性繊維２．３および感
圧ゴム４により圧力センサＳが構成されている。この圧
力センサＳを構成する感圧ゴム４は、加圧によるひずみ
の大きさに応じて絶縁状態から導通状態へ連続的に電気
抵抗値が変化するものである。また、ゴムであるのであ
らゆる曲面の形状にもフレキシブルに対応できる。そし
て感圧ゴム４は、第２図に示すように導電性繊維２，３
を介して電池５に電気的に接続されている。FIGS. 1 to 3 are cross-sectional views of a grip force auditory device according to an embodiment of the present invention, respectively. ! In these figures, which show an air circuit diagram and a perspective view of the state of use, this grip force auditory device has a spherical shape that is large enough to be held in the palm of the hand, as shown in FIG. It is formed into an external shape. The surface of this shape-retaining body l is covered with a pressure-sensitive rubber 4 having conductive fibers 2.3 adhered to both the front and back surfaces, and a pressure sensor S is constituted by these conductive fibers 2.3 and pressure-sensitive rubber 4. has been done. The pressure-sensitive rubber 4 constituting the pressure sensor S has an electrical resistance value that continuously changes from an insulating state to a conductive state depending on the magnitude of strain caused by pressurization. Also, since it is made of rubber, it can be flexibly adapted to any curved shape. The pressure sensitive rubber 4 is made of conductive fibers 2 and 3 as shown in FIG.
It is electrically connected to the battery 5 via.
保形体１の内部には、はぼ直径に相当する長さの取付板
６が横断状態に埋設されていて、この取付板６に、Ａ−
Ｄ変換器７、メロディＩＣや分周器を備えたマイクロコ
ンピュータ８、電池５等が取り付けられている。また、
保形体１の一部にはスピーカ９が外部に露呈状態で固定
されており、第２図に示すように、マイクロコンピュー
タ８１発振子１０、アンプ１１およびスピーカ９により
発音装置Ｍが構成されており、この実施例では、発音装
置ｆｆＭが音楽発生回路に構成されている。また、Ａ−
Ｄ変換器７は、圧力センサＳから出力されるアナログ信
号を、マイクロコンピュータ８に入力するためにディジ
タル信号に変換する。尚、第２図に示すように圧力セン
サＳとＡ−Ｄ変換器７との間に介挿接続されている電源
スィッチ１２は、保形体１の加圧による変形時にのみオ
ン状態になるよう設けられている。Inside the shape retaining body 1, a mounting plate 6 with a length corresponding to the diameter of the barrel is buried in a transverse state.
A D converter 7, a microcomputer 8 equipped with a melody IC and a frequency divider, a battery 5, etc. are attached. Also,
A speaker 9 is fixed to a part of the shape-retaining body 1 so as to be exposed to the outside, and as shown in FIG. In this embodiment, the sound generating device ffM is configured as a music generating circuit. Also, A-
The D converter 7 converts the analog signal output from the pressure sensor S into a digital signal for input to the microcomputer 8. Incidentally, as shown in FIG. 2, the power switch 12 inserted and connected between the pressure sensor S and the A-D converter 7 is provided so as to be turned on only when the shape retaining body 1 is deformed by pressurization. It is being
次に、上記構成とした実施例の作用について説明する。Next, the operation of the embodiment configured as described above will be explained.
第３図に示すように、手の平に把持してこれを握り締め
る。この時、圧力センサＳには感圧ゴム４を用いている
ので、圧力を感知する面積を大きくとることができ、握
る際の方向性を意識しないでよい、この加圧力に応じて
保形体１が凹み、これと一体に感圧ゴム４に圧縮ひずみ
が生じ、このひずみの大きさに応じて電気抵抗値が低下
する。この感圧ゴム４には、導電性繊維２，３を介して
電池５から一定の直流電圧が印加されているから、圧力
センサＳからは、押圧力つまり握力に比例して変化する
直流電流が出力され、この直流電流がＡ−Ｄ変換器７で
ディジタル信号に変換された後にマイクロコンビュータ
８に入力される。マイクロコンピュータ８は、入力ディ
ジタル信号に対し予め設定されたプログラムに従って信
号処理する。すなわち。As shown in Figure 3, hold it in the palm of your hand and squeeze it. At this time, since pressure-sensitive rubber 4 is used for the pressure sensor S, the area for sensing pressure can be large, and the shape-retaining body 1 is depressed, and together with this, a compressive strain is generated in the pressure sensitive rubber 4, and the electrical resistance value decreases in accordance with the magnitude of this strain. Since a constant DC voltage is applied to the pressure-sensitive rubber 4 from the battery 5 via the conductive fibers 2 and 3, the pressure sensor S outputs a DC current that changes in proportion to the pressing force, that is, the grip force. This DC current is converted into a digital signal by an A-D converter 7 and then input to a microcomputer 8. The microcomputer 8 processes input digital signals according to a preset program. Namely.
発振子ｌＯからのクロックパルスに従って各種の命令が
実行されるのであり、例えば、メロディＩＣに複数曲の
メロディが記憶されている場合。Various commands are executed according to clock pulses from the oscillator 10. For example, when a melody IC stores melodies of multiple songs.
１回目の握り締め動作により圧力センサＳがオン状態と
なって電気が流れると、メロディの１音符の音が出力さ
れる。この時、圧力つまり握力の強さに応じて音量が大
きくなるようになっており、それにより握力の強さを音
量で聴感できるようになっている。そして、握り締める
動作をやめると圧力がなくなって圧力センサＳがオフ状
態となり、再び握り締めることにより圧力センサＳがオ
ン状態となると、同一メロディの次の一音符の音が出力
される。このようにして圧力センサＳのオン・オフ状態
が繰り返されることにより曲が進行していく。そして、
１曲が終了すると、次の曲へ移行し、全部の曲が終了す
ると、再び最初の曲に戻る。第４図は。When the pressure sensor S is turned on by the first clenching action and electricity flows, the sound of one note of the melody is output. At this time, the volume increases in accordance with the pressure, that is, the strength of the grip, so that the strength of the grip can be heard through the volume. Then, when the user stops clenching, the pressure disappears and the pressure sensor S turns off, and when the user clenches again, the pressure sensor S turns on, and the next note of the same melody is output. The song progresses by repeating the on/off state of the pressure sensor S in this way. and,
When one song ends, it moves on to the next song, and when all the songs end, it returns to the first song again. Figure 4 is.
“線路は続くよ″の曲を出力する場合を例示したもので
あり、この図から明らかなように、音量による握力の強
さの聴感だけでなく、メロディのスピードや進行リズム
つまり音の発生時間の長短を、握り締め動作によって自
在に操作できるので、一種の楽器として楽しみながら握
力の増強および末梢神経の発達つまり運動神経や知覚神
経の発達を図ることができる。また、遊びながらの機能
回復（リハビリテーション）に利用することもできる。This is an example of outputting the song "Railway Continues," and as it is clear from this figure, it is not only possible to hear the strength of the grip depending on the volume, but also the speed of the melody and the rhythm of the progression, that is, the time at which the sound occurs. Since you can freely manipulate the length and shortness of the handle by tightening your grip, you can enjoy it as a kind of musical instrument while increasing your grip strength and developing your peripheral nerves, that is, your motor and sensory nerves. It can also be used for functional recovery (rehabilitation) while playing.
さらに詳述すると、メロディが何曲出力されたかにより
握った回数を確認でき、音量によって握力の強さを聴感
でき、また、メロディの進み具合によって高度な運動神
経のチェックを行なうことができる。この高度な運動神
経については、握る強さ、握る時間および離すタイミン
グの組合せ加減によって、メロディを恰も演奏する如く
美しく進行できるようになったか否かで判断できる。従
って、音感の発達や回復を促進する機能をも有する。ま
た、身体障害者や長期療養者のリハビリテーションや幼
児の機能発達の目的で用いる場合、このような訓練等を
見守る立場の人には、メロディを聴くだけで機能の回復
や発達の進行状況を確認できる長所がある。More specifically, you can check the number of times you squeezed the grip by checking how many melodies are output, you can hear the strength of your grip by checking the volume, and you can check your advanced motor skills by checking the progress of the melody. This advanced motor nerve can be judged by whether or not the melody can be progressed beautifully, as if playing a melody, by adjusting the combination of the strength of the grip, the duration of the grip, and the timing of release. Therefore, it also has the function of promoting the development and recovery of pitch sense. In addition, when used for the purpose of rehabilitation of the physically disabled or long-term care recipients, or for the functional development of young children, those who are in a position to supervise such training etc. can check the recovery of function and the progress of development simply by listening to the melody. There are advantages to being able to do so.
第５図および第６図は、それぞれこの発明の他の実施例
器具の断面図および電気回路図を示し、第１図および第
２図と同−若しくは同等のものには同一の符号を付しで
ある。そして、圧力センサＳ′をひずみゲージ１３によ
り構成した点において第１図および第２図の実施例と相
違し、保形体１の加圧による変形により、ひずみゲージ
１３は、ひずみを受けた度合いに応じてその抵抗値が連
続的に変化するので、上記実施例と同様の効果を得るこ
とができる。5 and 6 respectively show a sectional view and an electric circuit diagram of other embodiments of the present invention, and the same or equivalent parts as in FIGS. 1 and 2 are given the same reference numerals. It is. The pressure sensor S' is different from the embodiments shown in FIGS. 1 and 2 in that the pressure sensor S' is constituted by a strain gauge 13, and as the shape retaining body 1 is deformed by pressurization, the strain gauge 13 changes to the extent that it receives strain. Since the resistance value changes continuously accordingly, the same effect as in the above embodiment can be obtained.
尚、この発明は、上記実施例にのみ限定されるものでは
なく、請求の範囲を逸脱しない限り種々の実施態様が考
えられるのは勿論であり、例えば、上記実施例では発音
装置Ｍを音楽発生回路に構成した場合について説明して
いるが、音楽以外の音を出すようにしてもよい。また、
外形は球状に限らず１手の平に把持できる形態であれば
よい。It should be noted that the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various embodiments can be considered without departing from the scope of the claims. For example, in the above-mentioned embodiment, the sound generating device M is Although the case where it is configured as a circuit is explained, it may be configured to emit sounds other than music. Also,
The outer shape is not limited to a spherical shape, and may be any shape that can be held in the palm of one hand.
以上詳述したように、この発明の握力聴感器具によると
、握力の強さを圧力センサで感知してそれに比例した電
気信号を出力させ、この電気信号で発音装置を駆動する
構成としたので、握力の強さや握る時間の長短等により
出力音量や音の発生時間の長短を可変でき、飽きること
なく楽しみながら握力の増強および末梢神経の発達や回
復を図ることができる画期的な効果を得られる。As detailed above, according to the grip force hearing instrument of the present invention, the strength of the grip force is sensed by a pressure sensor, an electric signal proportional to it is outputted, and the sounding device is driven by this electric signal. The output volume and duration of the sound generation can be varied depending on the strength of the grip and the length of time the grip is held, resulting in a revolutionary effect that allows you to enjoy increasing your grip strength and developing and recovering your peripheral nerves while never getting bored. It will be done.
また、発音装置を音楽発生回路に構成すれば、前記効果
の他に高度な運動神経のチェックや音感の発達または回
復の促進を図れる機能を有し。Furthermore, if the sound generation device is configured as a music generation circuit, in addition to the above-mentioned effects, it has a function of checking advanced motor nerves and promoting the development or recovery of pitch sense.
この発明は極めて顕著な実用的効果を得られるものであ
る。This invention can provide extremely significant practical effects.
第１図ないし第３図はそれぞれこの発明の１実施例であ
る握力聴感器具の断面図、電気回路図、および使用状態
の斜視図であり、第４図は握る動作と発音との関係を説
明する図、第５図および第６図はそれぞれこの発明の他
の実施例器具の断面図および電気回路図である。
１・・・保形体、 ４・・・感圧ゴム、８・・
・マイクロコンピュータ、
９・・・スヒーカ、１ｏ・・・発振子。
１３・・・ひずみゲージ、 ｓ、ｓ’・・・圧力センサ
、Ｍ・・・発音装置。
第１図
第２図
１２ Ｌ＋＋＋＋＋＋−−−−Ｊ第
３図
第４図
第５図
第６図Figures 1 to 3 are a cross-sectional view, an electric circuit diagram, and a perspective view of a grip force listening device according to an embodiment of the present invention, and a perspective view of the device in use, and Figure 4 explains the relationship between gripping motion and sound production. Figures 5 and 6 are a sectional view and an electrical circuit diagram, respectively, of other embodiments of the present invention. 1...Shape support, 4...Pressure sensitive rubber, 8...
・Microcomputer, 9...Shiker, 1o...Resonator. 13... Strain gauge, s, s'... Pressure sensor, M... Sound generating device. Figure 1 Figure 2 12 L+++++++---J Figure 3 Figure 4 Figure 5 Figure 6
Claims (1)
変形に対して復元する弾性を有する保形体と、この保形
体の内方への加圧力の強さに対応して変形し、かつ電気
抵抗値が連続的に変化する圧力センサと、この圧力セン
サの出力電気信号の変化に対応して出力音量および発音
時間等を可変制御される発音装置とを備えてなることを
特徴とする握力聴認器具。 ２、圧力センサが、抵抗値連続変化型ひずみ感圧ゴムま
たはひずみゲージからなり、発音装置が、メロディＩＣ
および分周器を備えたマイクロコンピュータ、発振子お
よびスピーカにより音楽発生回路に構成された特許請求
の範囲第１項記載の握力聴認器具。[Claims] 1. A shape-retaining body that has an external shape that can be held in the palm of the hand and has elasticity to restore itself to deformation due to inward pressure, and a strength of the inward pressure of this shape-retaining body. It is equipped with a pressure sensor that deforms correspondingly and whose electrical resistance value continuously changes, and a sounding device whose output volume, sounding time, etc. are variably controlled in response to changes in the output electrical signal of the pressure sensor. A grip force auditory device characterized by: 2. The pressure sensor consists of a strain pressure sensitive rubber with a continuously variable resistance value or a strain gauge, and the sounding device consists of a melody IC.
The grip force hearing instrument according to claim 1, wherein the music generating circuit includes a microcomputer equipped with a frequency divider, an oscillator, and a speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13256986A JPS62290478A (en) | 1986-06-06 | 1986-06-06 | Grip hearing confirmation instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13256986A JPS62290478A (en) | 1986-06-06 | 1986-06-06 | Grip hearing confirmation instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62290478A true JPS62290478A (en) | 1987-12-17 |
| JPH0253070B2 JPH0253070B2 (en) | 1990-11-15 |
Family
ID=15084374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13256986A Granted JPS62290478A (en) | 1986-06-06 | 1986-06-06 | Grip hearing confirmation instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62290478A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006320417A (en) * | 2005-05-17 | 2006-11-30 | Aichi Prefecture | Muscle training instrument with music playing function |
| JP2006320416A (en) * | 2005-05-17 | 2006-11-30 | Aichi Prefecture | Muscle training implement with music playing function |
| WO2014014061A1 (en) * | 2012-07-18 | 2014-01-23 | NISHITANI Taihei | Training tool |
| WO2017115415A1 (en) * | 2015-12-28 | 2017-07-06 | 株式会社カタログハウス | Grip strength detection mechanism, exercise apparatus provided with grip strength detection mechanism, and method for using exercise apparatus |
| JP2020176896A (en) * | 2019-04-17 | 2020-10-29 | 豊田合成株式会社 | Grip pressure confirmation device, method for confirming grip pressure, and grip pressure confirmation system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0830206A (en) * | 1994-07-13 | 1996-02-02 | Sakai Design Studio:Kk | Fixture of display plate and the like |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57163259U (en) * | 1981-04-07 | 1982-10-14 | ||
| JPS6088958U (en) * | 1983-11-24 | 1985-06-18 | 田窪 宜彦 | Rotating body with a frequency meter for measuring the number of flexible movements of the fingers |
-
1986
- 1986-06-06 JP JP13256986A patent/JPS62290478A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57163259U (en) * | 1981-04-07 | 1982-10-14 | ||
| JPS6088958U (en) * | 1983-11-24 | 1985-06-18 | 田窪 宜彦 | Rotating body with a frequency meter for measuring the number of flexible movements of the fingers |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006320417A (en) * | 2005-05-17 | 2006-11-30 | Aichi Prefecture | Muscle training instrument with music playing function |
| JP2006320416A (en) * | 2005-05-17 | 2006-11-30 | Aichi Prefecture | Muscle training implement with music playing function |
| JP4582785B2 (en) * | 2005-05-17 | 2010-11-17 | 愛知県 | Strength training equipment with music performance function |
| WO2014014061A1 (en) * | 2012-07-18 | 2014-01-23 | NISHITANI Taihei | Training tool |
| WO2017115415A1 (en) * | 2015-12-28 | 2017-07-06 | 株式会社カタログハウス | Grip strength detection mechanism, exercise apparatus provided with grip strength detection mechanism, and method for using exercise apparatus |
| JP2020176896A (en) * | 2019-04-17 | 2020-10-29 | 豊田合成株式会社 | Grip pressure confirmation device, method for confirming grip pressure, and grip pressure confirmation system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0253070B2 (en) | 1990-11-15 |
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