JPH0332239U

JPH0332239U -

Info

Publication number: JPH0332239U
Application number: JP9217489U
Authority: JP
Priority date: 1989-08-07
Filing date: 1989-08-07
Publication date: 1991-03-28

Description

[Brief explanation of the drawing]

第１図は全体構成を示す断面図、第２図は揺動
部材のみを取り出して示す断面図、第３図は第２
図の下方から見た図、第４図は固定部材のみを取
り出して示す断面図、第５図は第４図の下方から
見た図、第６図は係止板を第１図の下方から見た
図、第７図は本考案の第二実施例の全体構成を示
す断面図、第８〜１３図は本考案の第三実施例を
示しており、第８図は全体構成を示す断面図、第
９図は揺動部材のみを取り出して示す断面図、第
１０〜１１図は第二の係止板を示しており、第１
０図は断面図、第１１図は第１０図の左方から見
た図、第１２図は固定部材のみを取り出して示す
断面図、第１３図は第１２図の下方から見た図、
第１４〜１６図は本考案の第四実施例を示してお
り、第１４図は全体構成を示す断面図、第１５図
は固定部材のみを取り出して示す断面図、第１６
図は第１５図の下方から見た図、第１７図は、本
考案の第五実施例の全体構成を示す断面図、第１
８〜２２図は本考案の第六実施例を示しており、
第１８図は全体構成を示す断面図、第１９図は揺
動部材のみを取り出して示す断面図、第２０図は
第１９図の下方から見た図、第２１〜２２図は係
止片を示しており、第２１図は平面図、第２２図
は断面図、第２３〜２５図は本考案の第七実施例
を示しており、第２３図は全体構成を示す断面図
、第２４〜２５図は第三の係止板を示しており、
第２４図は平面図、第２５図は断面図、第２６図
はオートテンシヨナの使用状態の１例を示す略正
面図、第２７図は従来のオートテンシヨナの１例
を示す断面図である。１…ベルト、２…駆動プーリ、３…従動プーリ
、４…ガイドプーリ、５…テンシヨンプーリ、６
…枢軸、７…揺動部材、９…ボルト、１０…固定
軸、１１…基板、１２…緩衝筒、１３…保持筒、
１４…スリーブ、１５…ハウジング片、１６…捩
りコイルばね、１７…係止部、１８…すり割り、
１９…係止段部、２０…固定軸、２１…固定部材
、２２…ハウジング片、２２ａ…基板部、２３…
第一の周壁、２４…揺動部材、２５…揺動筒、２
６…滑り軸受、２７…揺動板部、２８…第二の周
壁、２９…ハウジング片、３０…捩りコイルばね
、３１…ゴム筒、３２…ハウジング、３３…揺動
腕、３４…枢軸、３５…ころがり軸受、３６…線
材、３６ａ…第一の係止部、３６ｂ…第二の係止
部、３７ａ，３７ｂ…係止孔、３８…係止部、３
９…係止板、４０…係止孔、４１…外周側係止段
部、４２…内周側係止段部、４３…第二外周側係
止段部、４４…第二内周側係止段部、４５…螺子
孔、４６…螺子、４６ａ…頭部、４７…突出部、
４８…孔、４９…ピン、５０…切り欠き、５１…
第二の係止板、５２…円孔、５３…螺子、５４…
螺子孔、５５…突片、５６…螺子孔、５７…係止
螺子、５７ａ…頭部、５８…孔、５９…係止ピン
、６０…係止片、６１…円孔、６２…螺子、６３
…螺子孔、６４…第三の係止板、６５…係止縁、
６６…透孔。 Fig. 1 is a cross-sectional view showing the overall configuration, Fig. 2 is a cross-sectional view showing only the swinging member, and Fig. 3 is a cross-sectional view showing only the swinging member.
Figure 4 is a cross-sectional view showing only the fixing member taken out, Figure 5 is a view seen from the bottom of Figure 4, and Figure 6 shows the locking plate as seen from the bottom of Figure 1. 7 is a sectional view showing the overall structure of the second embodiment of the present invention, FIGS. 8 to 13 are sectional views showing the third embodiment of the present invention, and FIG. 8 is a sectional view showing the overall structure. Figures 9 and 9 are cross-sectional views showing only the swinging member, Figures 10 and 11 show the second locking plate, and the first
0 is a sectional view, FIG. 11 is a view seen from the left side of FIG. 10, FIG. 12 is a sectional view showing only the fixing member taken out, and FIG. 13 is a view seen from below of FIG. 12.
14 to 16 show a fourth embodiment of the present invention, in which FIG. 14 is a sectional view showing the overall configuration, FIG. 15 is a sectional view showing only the fixing member taken out, and FIG. 16 is a sectional view showing only the fixing member.
The figure is a view seen from below in Fig. 15, and Fig. 17 is a sectional view showing the overall configuration of the fifth embodiment of the present invention.
8 to 22 show a sixth embodiment of the present invention,
Fig. 18 is a cross-sectional view showing the overall configuration, Fig. 19 is a cross-sectional view showing only the swinging member, Fig. 20 is a view seen from below Fig. 19, and Figs. 21 and 22 show the locking piece. 21 is a plan view, FIG. 22 is a sectional view, FIGS. 23-25 are a seventh embodiment of the present invention, FIG. 23 is a sectional view showing the overall structure, and FIG. 24-25 are sectional views. Figure 25 shows the third locking plate,
Fig. 24 is a plan view, Fig. 25 is a sectional view, Fig. 26 is a schematic front view showing an example of an autotensioner in use, and Fig. 27 is a sectional view showing an example of a conventional autotensioner. be. 1... Belt, 2... Drive pulley, 3... Driven pulley, 4... Guide pulley, 5... Tension pulley, 6
... Pivot, 7... Swinging member, 9... Bolt, 10... Fixed shaft, 11... Board, 12... Buffer tube, 13... Holding tube,
14... Sleeve, 15... Housing piece, 16... Torsion coil spring, 17... Locking part, 18... Slot,
19... Locking step part, 20... Fixed shaft, 21... Fixing member, 22... Housing piece, 22a... Board part, 23...
First peripheral wall, 24... Swinging member, 25... Swinging tube, 2
6... Sliding bearing, 27... Rocking plate portion, 28... Second peripheral wall, 29... Housing piece, 30... Torsion coil spring, 31... Rubber cylinder, 32... Housing, 33... Rocking arm, 34... Pivot, 35 ...Rolling bearing, 36... Wire rod, 36a... First locking part, 36b... Second locking part, 37a, 37b... Locking hole, 38... Locking part, 3
9... Locking plate, 40... Locking hole, 41... Outer circumferential side locking step, 42... Inner circumferential side locking step, 43... Second outer circumferential side locking step, 44... Second inner circumferential side engaging stop portion, 45... screw hole, 46... screw, 46a... head, 47... protrusion,
48...hole, 49...pin, 50...notch, 51...
Second locking plate, 52... circular hole, 53... screw, 54...
Screw hole, 55... protruding piece, 56... screw hole, 57... locking screw, 57a... head, 58... hole, 59... locking pin, 60... locking piece, 61... circular hole, 62... screw, 63
...Screw hole, 64...Third locking plate, 65...Locking edge,
66...Through hole.

Claims

[Claims for Utility Model Registration] (1) A swinging member that swings about the fixed shaft by fitting a fixed shaft of the fixed member and a swinging tube formed in the center onto the fixed shaft. , a tension pulley that is provided on a part of the swinging member and is pivoted on a pivot parallel to the fixed shaft; and an elastic force is applied to the swinging member in a direction that presses the tension pulley against the belt. and a first limiting mechanism that is provided between the fixed member and the swinging member and limits the swinging amount of the swinging member about the fixed shaft to a range of a first limit amount. In Yona, between the fixed member and the swinging member,
An autotensioner characterized by being provided with a second limiting mechanism that limits the amount of swing of the swinging member about the fixed shaft to a range of a second limiting amount that is included within the range of the first limiting amount. . (2) The first restriction mechanism is formed on an outer peripheral side locking step formed on the outer peripheral edge of the locking plate that is fixed so as not to rotate with respect to the fixed shaft, and on the inner peripheral edge of the swing cylinder, and The autotensioner according to claim 1, comprising an outer circumferential locking step and an engageable inner circumferential locking step. (3) The second restriction mechanism includes a second outer peripheral locking step formed on the outer peripheral edge of the locking plate that is fixed so as not to rotate relative to the fixed shaft, and a screw hole formed in the end surface of the swing cylinder. 3. The autotensioner according to claim 2, further comprising: a head of a screw that is screwed into the autotensioner. (4) The second restriction mechanism is connected to a second outer circumferential side locking step formed on the outer peripheral edge of the locking plate that is fixed so as not to rotate relative to the fixed shaft, and a hole formed in the end surface of the swing cylinder. Claim 2, comprising a part of a pin that fits inside.
The autotensioner described in . (5) The second restriction mechanism is located at the end edge of one of the fixed member side housing piece formed concentrically with the fixed shaft and the swinging member side housing piece formed concentrically with the swinging cylinder. A notch formed in the part,
3. A second locking plate, the base of which can be fixed to the other housing piece with screws, and a second locking plate whose part is positioned inside the notch when the base is fixed. auto tensioner. (6) The second restriction mechanism is located at the end edge of one of the fixed member side housing piece formed concentrically with the fixed shaft and the swinging member side housing piece formed concentrically with the swinging cylinder. The projecting piece formed on the housing piece can be freely screwed into the screw hole formed on the other housing piece,
The autotensioner according to claim 1 or 2, comprising a locking screw whose head is positioned in a portion where it can freely abut against the protruding piece when screwed together. (7) The second restriction mechanism is located at the end edge of one of the fixed member side housing piece formed concentrically with the fixed shaft and the swinging member side housing piece formed concentrically with the swinging cylinder. a locking pin that can be fitted into a hole formed in the other housing piece, and a locking pin that, when fitted, positions a portion of the locking pin in a portion that can freely abut against the protrusion; The autotensioner according to claim 1 or 2. (8) The second restriction mechanism includes a second outer circumferential side locking step formed on the outer peripheral edge of the locking plate that is fixed so as not to rotate with respect to the fixed shaft, and a lock that can be screwed and fixed to the swinging member. 3. The autotensioner according to claim 2, wherein the autotensioner is comprised of a distal end portion of a piece. (9) the second restriction mechanism is formed at a second outer circumferential side locking step formed on the outer circumferential edge of the locking plate fixed so as not to rotate with respect to the fixed shaft, and on the inner circumferential edge of the swinging cylinder; A second inner locking step that can freely engage with the second outer locking step, and a second inner locking step closer to the end of the fixed shaft than the locking plate, are fixed so that rotation with respect to the fixed shaft is impossible. A part of the third locking plate that has been folded, and is composed of a locking edge that can freely enter between the second outer locking step and the second inner locking step as it is bent. The autotensioner according to claim 2, wherein: