JPH01159516U

JPH01159516U -

Info

Publication number: JPH01159516U
Application number: JP5351588U
Authority: JP
Priority date: 1988-04-22
Filing date: 1988-04-22
Publication date: 1989-11-06

Description

[Brief explanation of drawings]

第１図は本考案の正面図、第２図は同側面図、
第３図は同ＡＡ断面矢視図、第４図はスペーサの
斜視図、第５図は従来例の正面図である。１……枠体、２，３……上ローラ、４……ベル
クランク、５……軸、６……下ローラ、７……軸
、８……スペーサ、９，１０……ばねケース、１
１……軸、１２……ばね、１３……ロツド、１４
……ばね押え、１５……連結杆、１６……ねじ棒
、１７……調節輪、Ｅ……延線ワイヤ。 Figure 1 is a front view of the present invention, Figure 2 is a side view of the same,
FIG. 3 is a sectional view taken along the line AA, FIG. 4 is a perspective view of the spacer, and FIG. 5 is a front view of the conventional example. 1... Frame body, 2, 3... Upper roller, 4... Bell crank, 5... Shaft, 6... Lower roller, 7... Shaft, 8... Spacer, 9, 10... Spring case, 1
1...shaft, 12...spring, 13...rod, 14
... Spring holder, 15 ... Connection rod, 16 ... Threaded rod, 17 ... Adjustment ring, E ... Wire extension wire.

Claims

[Scope of utility model registration request]

A rectangular frame body with a towing hook on the front side, which is suspended from a pair of front and rear upper rollers that can roll on the wire, and a pair of left and right bells that are pivotally connected to the front part of the frame body at the bent base. a crank, a lower roller pivotally supported on the upper end of the bell crank, a spacer pivotally connected to the lower end of the bell crank and having a threaded hole perpendicular to the pivot axis; A pair of left and right spring cases that are pivotally connected to store the springs, a pair of rods that protrude toward the front of the spring case so that the springs inside the case can be compressed, and a connecting rod that connects the outer ends of both rods and has a hole in the center. and a threaded rod inserted into the center hole of the connecting rod, screwed into the threaded hole of the spacer, and locked to the connecting rod by an adjustment ring fixed at the outer end.