JPS60173748U

JPS60173748U - tensioner

Info

Publication number: JPS60173748U
Application number: JP6186684U
Authority: JP
Inventors: 村上　等; 山下　安太郎
Original assignee: エヌ・テ−・エヌ東洋ベアリング株式会社
Priority date: 1984-04-25
Filing date: 1984-04-25
Publication date: 1985-11-18
Also published as: JPH0412268Y2

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

[Brief explanation of the drawing]

第１図は実施例の断面図、第２図は第１図の一部省略の
斜視図、第３図は第１図の一部省略分解斜視図、第４図
は第２図の状態の正面図、第５図から第９図は第４図と
同様の状態における他の実施例の正面図、第１０図は第
９図の場合のシャフトとねじりコイルばねおよび固定部
材の関係を示す断面図、第１１図は第１０図の場合と同
様の状態における他の実施例の断面図である。１・・・シャフト、２・・・軸受、３・・・プーリ、４
・・・取付穴、５・・・固定部材、６・・・固定ねじ軸
、７・・・ナツト、８・・・凹所、９・・・周壁、１０
・・・スリット、１１・・・ねじりコイルばね、１２ａ
・・・嵌合部、１２ｂ・・・係合部、１３，１３’・・
・折返し部、１４・・・係合穴、１７・・・第２スリツ
ト。Fig. 1 is a sectional view of the embodiment, Fig. 2 is a partially omitted perspective view of Fig. 1, Fig. 3 is a partially omitted exploded perspective view of Fig. 1, and Fig. 4 shows the state of Fig. 2. 5 to 9 are front views of other embodiments in the same state as FIG. 4, and FIG. 10 is a cross section showing the relationship between the shaft, torsion coil spring, and fixing member in the case of FIG. 9. 11 are cross-sectional views of another embodiment in the same state as in FIG. 10. 1...Shaft, 2...Bearing, 3...Pulley, 4
... Mounting hole, 5... Fixing member, 6... Fixing screw shaft, 7... Nut, 8... Recess, 9... Peripheral wall, 10
...Slit, 11...Torsion coil spring, 12a
...Fitting part, 12b...Engagement part, 13, 13'...
- Folded portion, 14... Engagement hole, 17... Second slit.

Claims

[Scope of utility model registration request]

(1) Fit a rotating body that supports the endless band around the outer circumference of the shaft,
1. Insert the eccentric mounting hole provided in the shaft into the support shaft connected to the fixing member, engage one end of the torsion coil spring fitted onto the shaft with the shaft, and engage the other end with the fixing member. In a tensioner that fixes the shaft at a point where the rotational moment due to the torsion coil spring and the rotational moment due to the tension of the endless band are balanced, a recess is formed in the inner end surface of the shaft, a slit is provided in the peripheral wall of the recess, A tensioner characterized in that a fitting part that fits into the slit is formed at the shaft side end of the torsion coil spring, and a retaining part for the peripheral wall is formed closer to the tip of the fitting part.

(2) The tensioner according to claim 1, wherein a spring force is applied to the retaining part, and the engaging part is engaged with the peripheral wall by the spring force.

(3) Utility model registration claim 1 or 2, characterized in that the above-mentioned engaging portion is engaged with the inner circumferential surface of the peripheral wall.
Tensioner as described in section.

(4) The tensioner according to claim 1 or 2, or claim 2, wherein the above-mentioned retaining portion is engaged with another slit provided in the peripheral wall.

(5) The torsion coil spring described above is characterized in that the end on the shaft inner end surface side is engaged with the shaft, the outer end surface side is provided with a folded part, and the folded part is engaged with the fixing member. The tensioner according to claim 1 of the utility model.

(6) Utility model registration claim 1, characterized in that the end of the torsion coil spring on the inner end side of the shaft is engaged with the fixing member, and the end on the side of the outer end side is engaged with the shaft. Tensioner as described in.