JPS58146751A - Chain tensioner device - Google Patents

Abstract

PURPOSE:To simplify the structure of a chain tensioner device to reduce the installation space by forming a tensioner member and a pressing member for supporting the back of the tensioner member as an arm extended along a chain, and inclining the pressing member to be brought into contact with the back of the tensioner member by a spring. CONSTITUTION:A chain 2 is vertically disposed on the side of an engine body 1 to transmit the rotation of a crankshaft 3 mounted on the lower end to a pair of front and rear cam shafts 4 disposed on the upper side. A tensioner member 5 extended along the chain and a pressing member 6 for supporting the back of the tensioner member 5 are disposed outside the chain 2. In this case, the above respective members 5, 6 are provided with shafts 5a, 6a disposed on the longitudinal one side and other side of the chain 2 to be formed into an arm extended inwardly. Further, the member 6 is inclined inwardly by a spring 7 so that the forward end portion 6b is brought into contact with the back of the forward end portion 5b of the member 5. Thus, the member 5 can be always kept at a fixed pressing force in a compact structure.

Description

【発明の詳細な説明】 本発明は主としてエンジンのカムチェンに適用されるチ
ェンデンシ璽す装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to a chain density marking device applied to a cam chain of an engine.

従来このｍ装置として、チェ２の外側に１これに略沿っ
てのびるデンジ■す部材と、１１材を千ａｙ向から支承
する抑圧部材とを備える式のちのは知られるが、この場
合＃４ｓ材は互に内側と外側との２段に配置される式を
一般としたもので、か＼るものでは全体として比較的肉
厚となり、その装置に比較的大きな空間を必要とする不
都合を伴う。Conventionally, as this m device, it is known that the latter type is provided with a depressing member extending approximately along the outer side of the check 2 and a suppressing member supporting the 11 members from a thousand directions, but in this case #4s Generally, the materials are arranged in two stages, inside and outside, and in some cases, the walls are relatively thick as a whole, which has the disadvantage of requiring a relatively large space for the device. .

本発明はか＼る不都合のない装置を得ることをその目的
としたもので、チェ２の外１１に、これに略沿ってのび
るデンジ冒す部材と、該部材をその背面から支承する押
圧部材とを備える式のもの（おいて、該テンシ冒十部材
と該押圧部材とを該チェ２の長さ方向の一方と他方とに
各根部の軸を有して互（内向きにのびる長短の各アーム
に構成させると共に該押圧部材をばねで内方に押圧傾動
させてこれをその先端部において該デンジ冒す部材の先
端ｓ＆：その背面から当接させて成る。The object of the present invention is to obtain a device that does not have such inconveniences, and includes a member that extends around the outside 11 of the check 2 and extends approximately along the same, and a pressing member that supports the member from the back side. (In this case, the tension member and the pressing member are connected to one another in the longitudinal direction of the chain 2 with the axis of each root part (long and short parts extending inward). The pressing member is configured as an arm, and the pressing member is pressed and tilted inward by a spring, and the tip of the pressing member is brought into contact with the rear surface of the tip of the member that applies the pressure.

本発明実施の１例を別紙図面に付説明する。An example of implementing the present invention will be explained with reference to the attached drawings.

図面で（１１はエンジン本体、（２）はそのｇＩＩ向の
上下方向にのびるチェ２を示し、馳チェン（２）は下側
のクテンタシャ７Ｎ３）の−転【その上側の前後１Ｊｌ
ｔ）カムシャ７　［４）（４１６：伝達すべく用量され
る。In the drawing, (11 is the engine body, (2) is the chain 2 extending vertically in the gII direction, and the chain (2) is the lower chain 7N3).
t) Kamsha 7 [4) (416: administered to convey.

蒙チェン（２）の外側に、これに略沿ってのびるテンシ
冒す部材（５）と、鎖部材（５）を＋０９面から支承す
る押圧部材（６）とを備えるもので１この点は従来のも
のと侍（異らないが、本発明によれば、鋏デンシ■す部
材（５）と、該抑圧部材（６）とを蒙チェン（２）の長
さ方向の一方と他方とに各ＩＩ！躯の軸（５ｍ）（４ａ
）を有して互に内方にのびる比較的長いアームと、比較
的短いアームとに構成させ、更＆：＃押圧ｓ＃　（６）
をその根部のコイルばねその他のばね（７）で内方に押
圧傾動させ、これをその先端部（６ｂ）において鋏デン
シ璽す部材（５）の先端１１（！ｂ）にそ０ｆｉｉｌか
ら当接させるようにした。On the outside of the meng chain (2), there is a tension member (5) that extends approximately along the chain member (5), and a pressing member (6) that supports the chain member (5) from the +09 plane. According to the present invention, the scissor-densing member (5) and the suppressing member (6) are attached to one side and the other side of the mengcheng (2) in the longitudinal direction. !Axle of body (5m) (4a
) and a relatively long arm extending inwardly from each other and a relatively short arm, further &:#pressing s# (6)
is pressed and tilted inward by a coil spring or other spring (7) at its root, and its tip (6b) is brought into contact with the tip 11 (!b) of the scissor density binding member (5) from the bottom. I tried to let him do it.

崗この場合該軸（ｊａ）（４ａ）を互に結ｔｆｓ＠Ｘ−
Ｉは蒙チェン（２）の長さ方向の纏と略平行するものと
する。In this case, the axes (ja) and (4a) are connected together tfs@X-
It is assumed that I is approximately parallel to the lengthwise binding of Meng Cheng (2).

その作動を説明する＆：％＃テンシデン部材（５）と―
押圧部材（６）とは当初は第１図示のように互に略平行
に存するが、該チェノ（２）がのびた楊舎を考えるに、
例えばｌＩｓ図示の通りであり、験押圧部材（６）は大
きく内存に傾動して鋏デンシ璽す部材（５）に対し略直
角方向となり、かくて該ばね（７）は例えばコイルばね
であり、これは該部材（６）の傾動によれば漸次ばね強
ぎを滅多されるが、この場合該部材（６）はその作用点
を該部材（５１＆：対し漸次先端側に点ムから点１に移
行され、かくててこの原理により該部材（５）は常に略
一定の押圧力に保たれる。Explain its operation &:%# tensiden member (5) and-
Initially, the pressing members (6) are approximately parallel to each other as shown in the first figure, but considering the extension of the pressing member (2),
For example, as shown in the drawing, the test pressing member (6) is largely tilted in a substantially perpendicular direction to the scissor-densifying member (5), and the spring (7) is, for example, a coil spring; This is because the spring is rarely strengthened gradually by tilting the member (6), but in this case, the member (6) gradually changes its point of action from point 1 to point 1 with respect to the member (51 &). Thus, due to this principle, the member (5) is always kept at a substantially constant pressing force.

５　　このように本発明によるときはテンシ璽す部材と
押圧部材とをチェノの長さ方向の一方と他方と（４１根
部を有して互に内向きにのびる長灼の各アームとするも
ので、全体として比較的袂輻に収められて設置を客易に
することが出来、更に該押圧部材はその内方への傾動に
よれば、該テンシ曹す部材に対し歇次性用点を先端側に
移行されるもので、ばね強さの減少によるもこれが着圧
されて常に略一定の押圧力＆：得られる噂の効果を有す
る。5 As described above, according to the present invention, the tensioning member and the pressing member are formed into one and the other longitudinal arms of the chino (long arms having 41 roots and extending inward from each other). As a whole, the pressure member is relatively compact and can be easily installed, and furthermore, by tilting inward, the pressing member can press the tip of the pressing member intermittently against the tension member. Even if the spring strength decreases, it is compressed and has the rumored effect of always maintaining a constant pressing force.

【図面の簡単な説明】[Brief explanation of drawings]

１１ｈ１ｂｌＪは本発明装置の１ｈの正面図、第２図は
その一部の截断伺面図、ＩＮ　５図はその作動を説明す
る正向図である。 （２）・・・チ　ェ　ン （５）・・・テンシ璽す部材 （６）・・・押圧部材 （ｉａ）（４ａ）・・・集軸 （７）・・・ば　ね （ｓｂ）（６ｂ）・・・先　端　部 特許出願人　　本田技研工業株式金社 ！ 代　　理　　人　　　北　　　村　　　欣　　　−１，
プ。 外２名11h1blJ is a front view of 1h of the device of the present invention, FIG. 2 is a cut-away plan view of a part thereof, and FIG. IN5 is a front view for explaining its operation. (2)...Chain (5)...Tension member (6)...Press member (IA) (4a)...Collector (7)...Spring (sb) ( 6b)...Advanced part patent applicant Honda Motor Co., Ltd. Kanesha! Agent Kin Kitamura -1,
P. 2 people outside

Claims (1)

【特許請求の範囲】[Claims] チェ２の外側に、これに略沿ってのびるデンジ冒す部材
と、１ＩＩｌｌＩ材をその背面から支承する押圧部材と
を備える式のものにおいて、該デンジ■す部材と該押圧
部材とを該チェ２の長さ方向の一方と他方と（各根部の
軸を有して互に内向きにのびる長短の冬アームに構成さ
せると共に験揮圧部材をばねで内方（押圧傾動させてこ
れをその先端部において該デンジ冒す部材の先端部にそ
の背面から当接させて成るチェンデンシ璽す装置In the case of a type including a pressing member extending substantially along the outside of the check 2 and a pressing member supporting the 1IIIll material from the back side, the pressing member and the pressing member are connected to the outside of the check 2. One longitudinal arm and the other arm are formed into long and short winter arms that extend inwardly with the axis of each root. A change-over device, which is brought into contact with the tip end of the change-over member from its back surface.