JPS647249B2 - - Google Patents
Info
- Publication number
- JPS647249B2 JPS647249B2 JP6435083A JP6435083A JPS647249B2 JP S647249 B2 JPS647249 B2 JP S647249B2 JP 6435083 A JP6435083 A JP 6435083A JP 6435083 A JP6435083 A JP 6435083A JP S647249 B2 JPS647249 B2 JP S647249B2
- Authority
- JP
- Japan
- Prior art keywords
- helical spring
- cross
- spring
- section
- sectional
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/042—Wound springs characterised by the cross-section of the wire
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Description
【発明の詳細な説明】
本発明は、エンジンの動弁機構における弁バネ
に用いて好適なつる巻きバネに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a helical spring suitable for use as a valve spring in a valve train of an engine.
一般に、第１図に示すような円形縦断面形状を
有するつる巻きバネ１の縦断面部２における内側
部分２ａに作用する応力は、コイル中心径ｒに比
して線径W0が大きい場合、捩り力に加えて剪断
力による影響を受けて発生するため、コイル外側
部分２ｂに作用する応力に比べ過大となる。 Generally, the stress acting on the inner portion 2a of the vertical section 2 of the helical spring 1 having a circular vertical cross-sectional shape as shown in FIG. Since the stress is generated under the influence of shear force in addition to force, the stress is excessive compared to the stress acting on the outer coil portion 2b.
そこで、つる巻きバネの縦断面形状を、第２図
に示すように、半円状の外周BCDを有する外側
半面と半楕円状の外周BADを有する内側半面と
を組み合わせた卵形にすることが提案されてい
る。 Therefore, the vertical cross-sectional shape of the helical spring can be made into an oval shape, which is a combination of an outer half surface having a semicircular outer circumference BCD and an inner half surface having a semielliptical outer circumference BAD, as shown in Fig. 2. Proposed.
このような卵形縦断面形状を有するつる巻きバ
ネにおいては、上端部外周Ｂ付近から内側部外周
Ａを経由して下端部外周Ｄ付近に至る内側表面部
の応力が均一化されるが、最外側外周Ｃ付近の表
面部における応力は、均一にならず、円形縦断面
を有するつる巻きバネの場合よりも低くなる。 In a helical spring having such an oval longitudinal cross-sectional shape, the stress on the inner surface from near the outer periphery B of the upper end via the outer periphery A of the inner part to near the outer periphery D of the lower end is made uniform; The stress in the surface area near the outer circumference C is not uniform and is lower than in the case of a helical spring with a circular longitudinal section.
すなわち、コイル最外側部Ｃ付近における応力
分担が少なく、コイル内側部BADの負担が大き
くなり、コイル全体の荷重負担が均等になつてい
ないという問題点がある。 That is, there is a problem in that the stress sharing in the vicinity of the outermost part C of the coil is small, the burden on the inner part BAD of the coil becomes large, and the load burden on the entire coil is not uniform.
また、従来の卵形縦断面形状を有するつる巻き
バネによると、同一断面積の円形縦断面を有する
つる巻きバネに対して縦断面幅Ｗが大きくなり
（1.05〜1.25倍）、バネ外径（ｒ＋ｌ）が大きくな
つて、取付面積が多く必要とする。これは、この
バネを限られたスペースに配設するエンジン動弁
機構の弁バネに使用する場合に深刻な問題とな
る。 Furthermore, according to a conventional helical spring having an oval vertical cross-sectional shape, the vertical cross-sectional width W is larger (1.05 to 1.25 times) compared to a helical spring having a circular vertical cross-section with the same cross-sectional area, and the spring outer diameter ( r+l) becomes large, and a large installation area is required. This becomes a serious problem when this spring is used as a valve spring for an engine valve mechanism that is disposed in a limited space.
また、従来の卵形縦断面形状を有するつる巻き
バネでは、内外両側面が異なる曲面であるため、
製造上の位置決めが困難であるという問題点もあ
る。 In addition, in conventional helical springs with an oval longitudinal cross-section, both the inner and outer surfaces have different curved surfaces.
Another problem is that positioning during manufacturing is difficult.
なお、第２図中の符中Ｇは縦断面部における重
心を示す。 Note that the symbol G in FIG. 2 indicates the center of gravity in the longitudinal section.
本発明は、これらの問題点の解決をはかろうと
するもので、コイル最外側部に偏平部を設けて異
形断面形状にすることにより、取付面積の縮少を
はかりながら応力の均一化をはかり、しかも製造
が容易な、異形断面つる巻きバネを提供すること
を目的とする。 The present invention attempts to solve these problems, and by providing a flat part on the outermost part of the coil to give it an irregular cross-sectional shape, it aims to equalize the stress while reducing the installation area. It is an object of the present invention to provide a helical spring with a modified cross section that is easy to manufacture.
このため、本発明の異形断面つる巻きバネは、
その縦断面形状において、その内側半面を卵形の
縦断面形状を有するつる巻きバネと同様に形成さ
れ、その外側半面の最外側部には、このつる巻き
バネの中心軸線の方向に沿う偏平部をそなえてい
ることを特徴としている。 Therefore, the irregular cross-section helical spring of the present invention is
Its longitudinal cross-sectional shape is similar to a helical spring whose inner half has an oval longitudinal cross-sectional shape, and the outermost part of its outer half has a flat part along the direction of the central axis of the helical spring. It is characterized by having the following.
以下、図面により本発明の実施例について説明
すると、第３ａ図は本発明による異形断面つる巻
きバネの一部を拡大して示す縦断面図、第３ｂ図
は第３ａ図に示すバネの外側半面の形状を順次変
えた場合の縦断面図、第３ｃ図は第３ｂ図に示す
本発明の各バネの応力特性を従来の場合と比較し
て示すグラフであり、第４図は本発明のバネの変
形例の一部を拡大して示す縦断面図、第５図は本
発明のバネの他の変形例の一部を拡大して示す縦
断面図、第６図は従来の卵形縦断面形状を有する
つる巻きバネの部分縦断面状態と本発明における
実施例の部分縦断面状態とを比較して示す模式図
である。 Hereinafter, embodiments of the present invention will be explained with reference to the drawings. Fig. 3a is a longitudinal cross-sectional view showing an enlarged part of the irregular cross-section helical spring according to the invention, and Fig. 3b is an outer half of the spring shown in Fig. 3a. Fig. 3c is a graph showing the stress characteristics of each spring of the present invention shown in Fig. 3b in comparison with the conventional case, and Fig. 4 is a graph showing the stress characteristics of each spring of the present invention shown in Fig. 3b. FIG. 5 is an enlarged vertical cross-sectional view of another modified example of the spring of the present invention, and FIG. 6 is a longitudinal cross-sectional view of a conventional oval-shaped vertical cross-sectional view. FIG. 3 is a schematic diagram showing a comparison between a partial vertical cross-sectional state of a helical spring having a shape and a partial vertical cross-sectional state of an embodiment of the present invention.
第３ａ図に示すように、本発明のつる巻きバネ
は、その縦断面形状を次のような形状に設定され
ている。すなわち、その内側半面の外周BADが、
従来の卵形縦断面形状を有するつる巻きバネと同
様、長さｄのAOを長軸の半部とし、長さ2tのBD
を短軸とする半楕円状に形成されている。 As shown in FIG. 3a, the helical spring of the present invention has a vertical cross-sectional shape set as follows. In other words, the outer circumference BAD of the inner half is
Similar to the conventional helical spring with an egg-shaped vertical cross-section, AO of length d is half of the long axis, and BD of length 2t.
It is formed in a semi-elliptical shape with the short axis being .
なお、長さｄおよびｔは、ｄ／ｔ＝1.2〜1.6を
満たすように設定される。 Note that the lengths d and t are set to satisfy d/t=1.2 to 1.6.
また、外側半面における斜線部BE1B1′，
DF1D1′の外周はそれぞれ長さａのE1B1′，
F1D1′を長軸の半部とし、長さｄのBB1′，DD1′を
短軸の半部とする楕円の1/4の形状を有している。 In addition, the shaded area BE 1 B 1 ′ on the outer half surface,
The outer circumference of DF 1 D 1 ′ is E 1 B 1 ′ of length a,
It has a shape of 1/4 of an ellipse, with F 1 D 1 ′ being a half of the major axis and BB 1 ′ and DD 1 ′ of length d being half of the minor axis.
ところで、長さａはａ＝0.8t〜0.95t、長さｂは
ｂ＝0.3t〜0.75tを満たすように設定される。 Incidentally, the length a is set to satisfy a=0.8t to 0.95t, and the length b is set to satisfy b=0.3t to 0.75t.
そして、最外側部の外周E1C1F1には、長さｃ
＝ｔ−ｂの直線で構成される偏平部P1が、この
つる巻きバネの中心軸線の方向に沿うように設け
られている。すなわちこの偏平部P1を立体的に
見ると、つる巻きバネの外側包絡面が、底面の半
径ｒ＋l′の円筒面として、構成されるようになつ
ている。 Then, the outer circumference E 1 C 1 F 1 of the outermost part has a length c
A flat portion P1 formed by a straight line of =tb is provided along the direction of the central axis of this helical spring. That is, when this flat portion P1 is viewed three-dimensionally, the outer envelope surface of the helical spring is configured as a cylindrical surface with a radius r+l' of the bottom surface.
なお、第３ａ図中の符号Ｇは縦断面部における
重心を示し、長さｄ，ｔ，ａ，ｂの条件は、重心
Ｇのまわりの断面１次モーメントのバランスおよ
び重心Ｇを通る軸まわりの断面２次モーメントの
バランスがとれるように設定されている。 Note that the symbol G in Fig. 3a indicates the center of gravity in the vertical section, and the conditions for lengths d, t, a, and b are based on the balance of the first moment of area around the center of gravity G and the cross section around the axis passing through the center of gravity G. It is set so that the secondary moments are balanced.
本発明の異形断面つる巻きバネは上述のごとく
構成されているので、その圧縮または伸張時に
は、その縦断面部における最外側外周E1C1F1付
近の表面部における応力分担が従来の卵形縦断面
形状を有するつる巻きバネよりも高まり、これに
より縦断面外周ABE1C1F1DAの表面部にほぼ均
一な応力を発生する。 Since the irregular cross-section helical spring of the present invention is constructed as described above, when it is compressed or expanded, the stress distribution in the surface area near the outermost outer circumference E 1 C 1 F 1 in the longitudinal section is the same as that of the conventional oval-shaped longitudinal section. The stress is higher than that of a helical spring having a planar shape, and as a result, almost uniform stress is generated on the surface of the longitudinal cross-sectional outer periphery ABE 1 C 1 F 1 DA.
第３ｂ図は第３ａ図に示すバネの外側半面の形
状を変えた場合の縦断面形状を表わしており、
M1，M2，M3はそれぞれ外側半面の厚さOC1を、
第２図に示すCOに対して、90％、85％、80％に
設定している。そして、第３ｃ図に示す応力特性
のごとく、第２図に示す形状の異形状面つる巻き
バネについての応力特性S0に対して、M1，M2，
M3それぞれの場合にS1，S2，S3となつている。 Figure 3b shows the longitudinal cross-sectional shape when the shape of the outer half of the spring shown in Figure 3a is changed.
M 1 , M 2 , M 3 respectively represent the thickness OC 1 of the outer half,
The CO values shown in Figure 2 are set at 90%, 85%, and 80%. As shown in the stress characteristics shown in FIG. 3c, M 1 , M 2 ,
In each case of M 3 , they are S 1 , S 2 , and S 3 .
すなわち、最外周部の応力がS1〜S3の場合には
S0と比較して大きくなつており、しかも他の部分
（BA間）に発生している最大応力よりは低いた
めに従来余裕があり過ぎた最外周部の応力分担を
余裕範囲内で高めることができ、応力集中を良く
分散する結果となつている。 In other words, when the stress at the outermost circumference is S 1 to S 3 ,
Increase the stress sharing at the outermost periphery, where there was previously too much margin because it is larger than S 0 and lower than the maximum stress occurring in other parts (between BA), within the margin. This results in good dispersion of stress concentration.
したがつて、縦断面全体における荷重負担が周
方向に均等化されて、同一断面積を有する円形縦
断面つる巻きバネより約10〜15％増の耐荷重性能
が得られる。さらに卵形縦断面形状を有するつる
巻きバネと比べても、十分な耐荷重性能が得られ
る。 Therefore, the load bearing over the entire longitudinal section is equalized in the circumferential direction, and a load-bearing performance that is approximately 10 to 15% higher than that of a circular longitudinal section helical spring having the same cross-sectional area is obtained. Furthermore, sufficient load-bearing performance can be obtained compared to a helical spring having an oval vertical cross-sectional shape.
また、第６図に示すように、同一断面積で同一
重心位置Ｇを縦断面を有するつる巻きバネを考え
た場合に、本発明の縦断面部における最外側面外
周C1が、卵形縦断面形状を有するつる巻きバネ
における最外側面外周Ｃより内側に位置するよう
になり、コイル外径（ｒ＋l′）が従来の（ｒ＋
ｌ）より小さくなつて、これにより取付スペース
を縮少することができ、バネを取付ける設計の自
由度が大幅に増すようになる。このことは、本つ
る巻きバネを、エンジン動弁機構の弁バネに使用
する場合、極めて有効であることを示唆してい
る。 Further, as shown in FIG. 6, when considering a helical spring having a longitudinal section with the same cross-sectional area and the same center of gravity position G, the outermost surface outer circumference C 1 in the longitudinal section of the present invention is an oval-shaped longitudinal section. The outer diameter of the coil (r+l') is now smaller than the conventional (r+l').
l) It is smaller, thereby reducing the installation space and greatly increasing the freedom of design for installing the spring. This suggests that this helical spring is extremely effective when used as a valve spring for an engine valve mechanism.
そして、本発明の異形断面つる巻きバネを製作
する際には、縦断面部の直線部E1C1F1に相当す
る偏平部P1がガイドにして、確実に位置決めを
行なうことができ、これにより精度の高いつる巻
きバネを容易に製作できるのである。加えて、つ
る巻きバネの線間干渉時における当り面積を広く
できる利点もある。 When manufacturing the irregular cross-section helical spring of the present invention, the flat part P 1 corresponding to the straight part E 1 C 1 F 1 of the longitudinal section serves as a guide for reliable positioning. This makes it easy to manufacture highly accurate helical springs. In addition, there is an advantage that the contact area can be increased when there is interference between the wires of the helical spring.
次に本発明の異形断面つる巻きバネの変形例に
ついて説明すると、第４，５図に示すようになつ
ており、いずれもその縦断面部における外側半面
の形状を変形したものである。 Next, a description will be given of a modified example of the irregular cross-section helical spring of the present invention, as shown in FIGS. 4 and 5, in which the shape of the outer half of the longitudinal section is modified.
すなわち、第４図に示す変形例では、縦断面部
における外周B2BADD2が、AC2′を長軸とし、
BDを短軸とする楕円の一部をなしており、B2E2
間およびD2F2間の外周がB2′，D2′を中心とする
半径ｒの円弧で構成されるとともに、E2C2F2間
に直線で構成された最外周を有する偏平部P2が
設けられていて、第３ａ図に示す異形縦断面形状
を有するものとほぼ同様の機能を有するようにな
つている。 That is , in the modified example shown in FIG .
It forms part of an ellipse with BD as the minor axis, and B 2 E 2
A flat part where the outer periphery between E 2 C 2 F 2 and D 2 F 2 is composed of a circular arc with radius r centered on B 2 ′, D 2 ′, and the outermost periphery is composed of a straight line between E 2 C 2 F 2 P 2 is provided and is adapted to have substantially the same function as the one having the irregular longitudinal cross-sectional shape shown in FIG. 3a.
なお、本変形例における縦断面幅AC2は第３ａ
図における縦断面幅AC1と同一長である。 Note that the vertical section width AC 2 in this modification is the third a
It is the same length as the vertical section width AC 1 in the figure.
また、第５図に示す変形例では、縦断面部にお
ける内側半面の外周BADが、第３ａ図における
外周BADと同様に構成されており、BB3間およ
びDD3間の外周が直線、B3E3間およびD3F3間の
外周が、B3′，D3′を中心とする半径ｒの円弧で構
成されるとともに、E3C3F3間に直線で構成され
た外周を有する偏平部P3が設けられていて、第
３ａ図に示す異形縦断面形状を有するものとほぼ
同様の機能を有するようになつている。 In addition, in the modified example shown in FIG. 5, the outer circumference BAD of the inner half of the longitudinal section is configured similarly to the outer circumference BAD in FIG. 3a, and the outer circumference between BB 3 and DD 3 is a straight line, 3 and D 3 F 3 are composed of circular arcs with radius r centered on B 3 ′ and D 3 ′, and the outer periphery is composed of a straight line between E 3 C 3 F 3 . A section P3 is provided and is adapted to have substantially the same function as the one having the irregular longitudinal cross-sectional shape shown in FIG. 3a.
なお、この第５図に示す変形例の縦断面幅AC3
は、第３図における縦断面幅AC1と同一長であ
る。 Note that the vertical section width AC 3 of the modified example shown in FIG.
is the same length as the longitudinal section width AC 1 in FIG.
上述のごとく、各変形例の場合も、その圧縮ま
たは伸張時の外周ABB2E2C2F2D2DA，
ABB3E3C3F3D3DA付近の表面部における応力分
布がほぼ均一化されるとともに、前述の実施例と
同様の作用効果が得られる。 As mentioned above, in the case of each modification, the outer circumference ABB 2 E 2 C 2 F 2 D 2 DA during compression or expansion,
The stress distribution in the surface area near ABB 3 E 3 C 3 F 3 D 3 DA is made almost uniform, and the same effects as in the above-mentioned embodiments can be obtained.
以上詳述したように、本発明の異形断面つる巻
きバネによれば、その縦断面形状において、その
内側半面を卵形の縦断面形状を有するつる巻きバ
ネと同様に形成され、その外側半面の最外側部に
は、このつる巻きバネの中心軸線の方向に沿う偏
平部をそなえるという簡素な構成で、その縦断面
部の全周に亘る応力分布を均一化することがで
き、これにより荷重負担が均等になつて、小型で
強度の高いつる巻きバネが得られる利点がある。 As described in detail above, according to the irregular cross-section helical spring of the present invention, in its longitudinal cross-sectional shape, its inner half is formed in the same manner as a helical spring having an oval longitudinal cross-sectional shape, and its outer half With a simple configuration in which the outermost part is provided with a flat part along the direction of the central axis of the helical spring, it is possible to equalize the stress distribution over the entire circumference of the longitudinal section, thereby reducing the load burden. There is an advantage that a helical spring that is uniform and compact and has high strength can be obtained.
そして、従来の卵形縦断面形状を有するつる巻
きバネに比べ、バネ外径が小さくなり、取付面積
の節約が可能となるほか、バネ外周の偏平部を製
作の際にガイド部として使用することができるの
で、容易に精度の高いバネが得られる利点もあ
る。 Compared to conventional helical springs with an oval vertical cross-sectional shape, the outer diameter of the spring is smaller, which saves installation space, and the flat part of the outer periphery of the spring can be used as a guide part during manufacturing. This has the advantage that highly accurate springs can be easily obtained.
第１図は従来の円形縦断面形状を有するつる巻
きバネの側面図であり、第２図は従来の卵形縦断
面形状を有するつる巻きバネの一部を拡大して示
す縦断面図であり、第３〜５図は本発明の実施例
としての異形断面つる巻きバネを示すもので、第
３ａ図は本発明による異形断面つる巻きバネの一
部を拡大して示す縦断面図、第３ｂ図は第３ａ図
に示すバネの外側半面の形状を順次変えた場合の
縦断面図、第３ｃ図は第３ｂ図に示す本発明の各
バネの応力特性を従来の場合と比較して示すグラ
フ、第４図は本発明のバネの変形例の一部を拡大
して示す縦断面図、第５図は本発明のバネの他の
変形例の一部を拡大して示す縦断面図であり、第
６図は従来の卵形縦断面形状を有するつる巻きバ
ネの部分縦断面状態と本発明における実施例の部
分縦断面状態を比較して示す模式図である。
P1，P2，P3……偏平部、Ｇ……重心、ｒ……
半径、ａ，ｂ，ｃ，ｄ，ｔ，ｒ，ｌ，l′，Ｗ，W0
……長さ。
FIG. 1 is a side view of a conventional helical spring having a circular vertical cross-sectional shape, and FIG. 2 is a longitudinal cross-sectional view showing an enlarged part of a conventional helical spring having an oval vertical cross-sectional shape. , 3 to 5 show a helical spring with a modified cross section as an embodiment of the present invention, FIG. 3a is a vertical sectional view showing an enlarged part of the helical spring with a modified cross section according to the present invention, and FIG. 3b The figure is a longitudinal sectional view when the shape of the outer half of the spring shown in Fig. 3a is sequentially changed, and Fig. 3c is a graph showing the stress characteristics of each spring of the present invention compared with the conventional case shown in Fig. 3b. , FIG. 4 is an enlarged vertical cross-sectional view of a part of a modified example of the spring of the present invention, and FIG. 5 is a vertical cross-sectional view of an enlarged part of another modified example of the spring of the present invention. FIG. 6 is a schematic diagram showing a comparison between a partial vertical cross-sectional state of a conventional helical spring having an oval vertical cross-sectional shape and a partial vertical cross-sectional state of an embodiment of the present invention. P 1 , P 2 , P 3 ... Flat part, G ... Center of gravity, r ...
Radius, a, b, c, d, t, r, l, l', W, W 0
……length.
Claims (1)
側半面を卵形の縦断面形状を有するつる巻きバネ
と同様に形成され、その外側半面の最外側部に
は、このつる巻きバネの中心軸線の方向に沿う偏
平部をそなえていることを特徴とする、異形断面
つる巻きバネ。1. In the vertical cross-sectional shape of the helical spring, its inner half is formed in the same way as a helical spring having an oval vertical cross-sectional shape, and the outermost part of the outer half has a shape in the direction of the central axis of the helical spring. An irregular cross-section helical spring characterized by having a flat part along the .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6435083A JPS59190528A (en) | 1983-04-12 | 1983-04-12 | Coil spring having deformed section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6435083A JPS59190528A (en) | 1983-04-12 | 1983-04-12 | Coil spring having deformed section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59190528A JPS59190528A (en) | 1984-10-29 |
| JPS647249B2 true JPS647249B2 (en) | 1989-02-08 |
Family
ID=13255701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6435083A Granted JPS59190528A (en) | 1983-04-12 | 1983-04-12 | Coil spring having deformed section |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59190528A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4923183A (en) * | 1987-10-20 | 1990-05-08 | Honda Giken Kogyo Kabushiki Kaisha | Non-circular cross-section coil spring |
| FR2678035B1 (en) * | 1991-06-20 | 1995-04-14 | Valeo | SPRING SPRING, ESPECIALLY FOR A TORSION SHOCK ABSORBER. |
| KR20020019737A (en) * | 2000-09-06 | 2002-03-13 | 전재문 | coil spring and manufacturing process thereof |
| DE10221313B4 (en) * | 2002-05-14 | 2013-12-05 | Federntechnik Knörzer GmbH | mainspring |
| CN102016344B (en) * | 2008-05-07 | 2012-09-05 | 株式会社东乡制作所 | Helical spring with special-shaped cross-section |
| DE102012207381A1 (en) * | 2011-05-13 | 2012-11-15 | Schaeffler Technologies AG & Co. KG | Torque transfer device |
| JP5981958B2 (en) * | 2014-05-28 | 2016-08-31 | 三菱製鋼株式会社 | Suspension coil spring and strut suspension system |
| KR20230022980A (en) | 2020-06-12 | 2023-02-16 | 엔브이 베카에르트 에스에이 | Helical compression spring with non-circular cross-section for actuators to open and close automobile doors or tailgates |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2020678A1 (en) * | 1970-04-28 | 1971-11-25 | Daimler Benz Ag | Helical compression spring |
-
1983
- 1983-04-12 JP JP6435083A patent/JPS59190528A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59190528A (en) | 1984-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU626188B2 (en) | Coiled spring | |
| JP3618158B2 (en) | Spring damper device for lockup clutch for torque converter | |
| JPS647249B2 (en) | ||
| US3033622A (en) | Bushing | |
| JP2778735B2 (en) | Coil spring device | |
| JP2021028542A (en) | Coil spring assembly | |
| US3168160A (en) | Stethoscope | |
| US3269214A (en) | Fabricated truck and trailer axle housing | |
| JPH0160705B2 (en) | ||
| JPS5813767B2 (en) | Coil spring seat | |
| JP2724466B2 (en) | Method of forming eccentric spiral spring with unequal pitch | |
| JPS6325217B2 (en) | ||
| US5079475A (en) | Electric incandescent lamp having a looped filament support member | |
| US5808238A (en) | Multiple-cable power for transmission line system | |
| JPS6154355A (en) | Vibration-damping means for mechanical spring in railway rolling stock | |
| JPS5832033Y2 (en) | Deformed compression coil spring with linear spring characteristics | |
| JPS6069337A (en) | Coiled spring of strand having deformed section | |
| US3977274A (en) | Tension-torsion tie bar | |
| JPS6322351Y2 (en) | ||
| JPH0126909Y2 (en) | ||
| JPS5813766B2 (en) | coil spring | |
| JPS6217977Y2 (en) | ||
| JPH0217741B2 (en) | ||
| US1933460A (en) | Flexible casing | |
| JPS628445Y2 (en) |