JPH0557573U - Double arm type constant support - Google Patents

Abstract

(57) [Summary] [Purpose] A constant support that constantly supports pipes and other parts under a constant load regardless of their displacement, and reduces the overall height and width to allow mounting on a small area of a fox. [Structure] The central portions of the main arm 2 and the sub arm 8 are supported by the shafts 3 and 9 on both side plates 1a of the frame 1, and the lower portions of both arms 2 and 8 are connected to both ends of the link plate 10 by pins 11 and 12. A parallelogram is formed by both shafts and both pins. The tension rod 4 that supports the tension of the spring 7 is held by the upper end of the main arm 2, and the support rod 13 that supports the load P is pivotally supported by the upper portion of the sub arm 8.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a constant support that always supports a fixed load even if the pipes loaded above are displaced.

[0002]

[Prior Art]

 Even if the pipes loaded on the upper side are displaced, a constant support that always supports them with a constant load regardless of the displacement is known, for example, in Japanese Utility Model Laid-Open No. 53-157924. Referring to FIG. 1 of the above-mentioned reference, the balance arm 20 having three pins 19, 29 and 32 is provided, and the pin 19 pivotally attached to the main body serves as a fulcrum, and an upper load applied to the pin 29, The tension of the spring applied to the pin 32 is balanced. In order to effectively function this balancing action, an adjusting mechanism 30 that can adjust the distance between the two pins 19 and 32 is attached.

In this structure, the arm 12 which pivotally supports the pin 29 is inevitably in a gate shape as shown in FIG. This widens the overall constant support. Further, in order to allow the balance arm 20 to rotate in the gate shape, the height of the arm 12 in the gate shape is also large. Since the height and width become large, it may not be possible to mount if the allowable mounting area is limited. There was a need for a structure that reduced both vertically and horizontally.

[0004]

[Means for solving the problem]

 The balancing arm is divided into two parts, the main arm and the sub arm, and the two arms make a parallelogram motion with the line connecting the fulcrums as the basic side. The spring tension is the main arm and the pipe load is the sub arm. Support sharing. As a result, the portal arm disappears, and the horizontal length of the entire support can be reduced.

[0005]

EXAMPLES The drawings will be described. The frame 1 is one in which both ends of a pair of parallel side plates 1a are integrated by a vertical plate 1b and a horizontal plate 1c, and is fixed to a structure by the horizontal plate 1c. A spring case C is provided on the back surface of the vertical plate. The central portion of the main arm 2 is pivotally supported on both side plates by a shaft 3. The tension rod 4 freely penetrates the vertical plate 1b, one end of which is pivotally attached to the upper portion of the main arm 2 by a pin 5, and the other end of which is secured by a spring receiving plate 6. A spring 7 is inserted between the spring receiving plate 6 and the vertical plate 1b. The sub arm 8 is appropriately separated from the main arm 2 and has a central portion pivotally supported by the shaft 9 on both side plates. Both ends of the link plate 10 are connected to the lower ends of the main arm 2 and the sub arm 8 by pins 11 and 12, respectively. The shafts 3, 9 and the pins 11, 12 are positioned so as to form a parallelogram. The support rod 13 is pivotally attached to the upper end of the sub arm at the lower end and supports the pipe P at the upper end. The main arm 2 is provided with an adjusting mechanism M for adjusting the distance between the pin 5 and the shaft 3 so as to obtain an effective constant load action.

In this constant support, when the horizontal plate 1c is fixed on the structure and the pipe P is supported on the top of the supporting rod 13, even if the pipe is displaced due to heat change or the like, the parallel double-arm movement of the main double arms will occur. Works like a regular constant support.

[0007]

【effect】

 Compared to the conventional one, the front and rear edges are slightly longer, but the vertical and horizontal lengths are both shorter, allowing for installation at small fox mounting locations. For convenience of understanding, FIG. 2 shows the case where both the primary and secondary arms are on two parallel planes, but they can also be used on the same plane, in which case the width can be further shortened.

[0008]

[Brief description of drawings]

FIG. 1 is a front view of this device.

FIG. 2 is a side view of the same.

[0009]

[Explanation of symbols]

 1 frame 2 main arm 3 axis 4 tension rod 5 pin 6 spring receiving plate 7 spring 8 sub arm 9 axis 10 link plate 11, 12 pin 13 support rod M adjusting mechanism C spring case

Claims (1)

[Scope of utility model registration request] 1. A frame having vertical plates at both ends of a pair of side plates and horizontal plates that can be fixed to a structure, a main arm having a central portion pivotally attached to the side plates, and one end being an upper end of the main arm. A tension rod pivotally supported by the frame and freely penetrating the vertical plate of the frame and having a spring receiving plate locked at the other end, a spring inserted between the spring receiving plate and the vertical plate of the frame, and a central portion appropriately separated from the main arm. A link forming a parallelogram with a sub arm pivotally attached to the side plate and having a load supporting support rod pivotally supported at the upper end, and both ends pivotally attached to the lower ends of the main and sub arms, and a central pivot point of both arms. Double arm type constant support consisting of a plate.