JPH0557393U - Cable support structure for float switch in submersible pump - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a cable support structure capable of easily changing the length of a free bending portion of a cable of a float switch in a submersible pump. [Structure] A mounting structure 8 having a vertical hole 6 for press-fitting a plug, and a cable clamp 1 molded of a synthetic resin such as polypropylene. The cable clamp 1 is formed by folding in half. The cable 13 is clamped in the cable holding horizontal hole 3 and the vertically split plug body 4 portion guided directly below the cable holding horizontal hole 3 is press-fitted into the plug body press-fitting vertical hole 6. Both the clamped portion of the cable 13 and the press-fitted portion of the plug body 4 are kept in a pressed state.

Description

[Detailed description of the device]       [0001]     [Technical field of invention]   The present invention is a float switch for automatically controlling the operation of a submersible pump. The present invention relates to a cable support structure.       [0002]     [Prior Art]   Float switch in submersible pump changes length of free flex of cable It is known that the control water level can be adjusted by doing so.       [0003]   However, the conventional cable support structure has a rubber ring body as shown in FIG. 1'is fitted to a rod-shaped support 10a 'circumscribing the submersible pump, and a float switch is attached. Fix the cable 13 'of the belt 12' to the outside of the rubber ring 1'with an adhesive. The height of the control water level is adjusted by fitting the rubber ring 1'on the rod-shaped support 10a '. This is done by moving the position up and down.       [0004]     [Problems to be solved by the device]   In the above-mentioned conventional cable structure, the length of the free bending portion 13'f of the cable 13 'is Because it cannot be changed, the control range of water level cannot be increased. There is a drawback that the automatic operation control of the submersible pump cannot function in the deep water tank. It       [0005]   The purpose of the present invention is to arbitrarily adjust the control range of the water level by the float switch. The automatic operation control of the submersible pump is possible even in a deep water tank or a shallow water tank. Cable that can easily change the length of the free flex of the cable to ensure that To provide a support structure.       [0006]     [Device configuration]   In the float switch cable support structure in the submersible pump according to the present invention, Cable gripping tool made of synthetic resin such as polypropylene, and cable gripping tool And a mounting structure having a press-fitting vertical hole for a plug portion, which will be described later. The gripping device is folded in two around the thin hinge part, When closed, a horizontal hole for inserting a cable is formed in the head and it is guided from the head. The formed body is formed into a vertically split plug body, and the plug end is passed through the lateral hole of the head. The cable that holds the gap and has a float switch attached to the tip By inserting the plug body into the press-fitting vertical hole by sandwiching it in the horizontal hole for inserting the bull, Both the clamped portion of the cable and the press-fitted portion of the plug body are kept in a pressed state. did.       [0007]     【Example】   Hereinafter, description will be given with reference to the drawings of the embodiments.       [0008]   Numeral 1 is a cable holder, which is made of polypropylene or the like and has an excellent insulating property. Closed in half with the thin hinge part 2 made of synthetic resin as the fulcrum And the cable holding lateral hole 3 is formed in the head at the time of the closing, It was introduced from the position directly below the head, biased toward the opening starting end face 3a of the lateral hole 3 for pinching the cable. The body is formed in a vertically divided plug body 4, and the plug end 4e extends from the plug hole 4 into the lateral hole 3 of the head. There is a gap 5 communicating with it. Then, the outer diameter of the plug body 4 is changed to the press-fitting vertical hole 6 described later. Or slightly larger than the inner diameter of the cable The diameter of the bull 13 is slightly smaller than the outer diameter of the bull 13. 8 is the cable holding tool 1 is a mounting structure having a press-fitting vertical hole 6 in the plug body 4 part of FIG. The tube end of the tube body 10a that is erected along the outer wall 9 of the pump is placed in the cable clamp 1. No vertical hole 6 for press-fitting the plug body 4 part, or the upper surface of the peripheral part of the pump casing 11 A vertical hole is formed in the seat portion 10b provided at the upper end of the cable, and the vertical hole is used to plug the cable holding tool 1. A vertical hole for press-fitting the body 4 part. 7a is a screw hole attached to the mounting structure 8, and 7b is a screw hole. It is a screw hole formed in the plug body 4 portion of the cable clamp 1 in a direction orthogonal to the gap 5. It       [0009]   When using it, close it in half with the hinge part 2 of the cable clamp 1 as the fulcrum. , The cable 13 with the float switch 12 moored at the tip is used as a cable pinch lateral hole In the state that the free bending portion 13f of the cable 13 is adjusted to an arbitrary length , The plug body 4 of the cable clamp 1 is press-fitted into the press-fitting vertical hole 6, and if necessary, a screw hole Screws are applied using 7a and 7b. In this case, the upper limit of the water level is detected The holding tool that holds the cable of the upper float switch is The lower float switch that press-fits into the press-fitting vertical hole 6 to detect the lower limit of the water level. The clamp holding the cable is press-fitted into the press-fitting vertical hole 7 from the descending portion of the tubular body 10a, and Or to the press-fitting vertical hole 6 formed in the peripheral upper surface seat portion 10b of the pump casing 11. It should be press-fitted. Then, as described above, the horizontal hole 3 of the cable clamp 1 is If the hole diameter is slightly smaller than the outer diameter of the cable 13, the cable 13 When plugged, the plug body 4 swells and comes into pressure contact with the inner peripheral surface of the upright hole 6, and also the cable holding tool. If the outer shape of the plug 4 portion in 1 is formed to be slightly larger than the inner diameter of the vertical hole 6, By press-fitting the plug body 4 into the vertical hole 6, the hole diameter of the lateral hole 3 tends to contract. The cable 13 is pressed against the outer periphery of the cable 13, and the clamped part of the cable 13 and the press-fitted part of the plug 4 are Is also kept pressed. Therefore, the cable 13 has its free bending portion 13f of an arbitrary length. It will be supported by the cable holding tool 1 in a state of being adjusted to a desired height.       [0010]   14 are provided on the inner peripheral surface of the lateral hole 3 in the cable gripping tool 1. If so, the sandwiching effect is further increased and the cable 13 can be firmly held. . Further, a press-fitting vertical hole formed in the upper surface seat portion 10b of the peripheral portion of the pump casing 11. For inserting the plug body 4 of the cable clamp 1 into 6 by pressing the cable clamp lateral hole 3 should be press-fitted with the opening start end face 3a inward and the opening end face 3b outward. In addition, the lateral hole opening start end surface 3a does not face the pump outer wall 9 but faces diagonally. It is desirable to mount it in this mode. The cable clamp 1 is mounted in this manner. If you wear it, even in a narrow space near the pump outer wall 9, the pump outer wall 9 9 and the side surface of the lateral hole opening surface 3a facing each other are substantially increased in distance, and The sudden bending of the cable 13 in the cable can be alleviated.       [0011]     [Effect of the device]   According to the structure of the present invention, the installation and removal of the float switch in the submersible pump The removal work is quick and easy, and the length of the flexible cable bend is extremely adjustable. It is easy and has the advantage that the control range of the water level can be set / changed arbitrarily.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a cable holding structure in a cable support structure of the present invention when it is closed. FIG. 2 is a side view of the cable holding structure of the present invention when the cable holding tool is closed. FIG. 3 is a front view of the cable holding structure of the present invention when the cable holding device is not closed. FIG. 4 is a plan view of the cable gripping tool of FIG. 3 seen from below. 5 is a vertical sectional front view taken along the line AA of FIG. FIG. 6 is a vertical cross-sectional side view of essential parts showing an example in which a tube end of a tube body erected along an outer wall of a submersible pump is used as a mounting structure in a cable support structure of the present invention. FIG. 7 is a plan view of essential parts showing an example in which a seat portion is provided on the upper surface of the peripheral portion of the pump casing to form a mounting structure in the cable support structure of the present invention. 8 is a vertical cross-sectional side view of essential parts of a submersible pump having a cable support structure of the present invention implemented by the mounting structure of FIG. 9 is a vertical cross-sectional side view of essential parts of a submersible pump having a cable support structure of the present invention implemented by the mounting structure of FIG. 7; FIG. 10 is a perspective view illustrating a conventional cable support structure. [Explanation of Codes] 1 cable clamp 2 hinge 3 lateral hole 3a for cable clamping opening start end face 4 vertical split plug 4e plug end 5 gap 6 press fit vertical hole 8 mounting structure 9 pump outer wall 10b seat 11 Pump casing 12 Float switch 13 Cable

Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location H02G 9/00 C 7373-5G

Claims (1)

[Claims for utility model registration] [Claim 1] A cable clamp (1) molded from a synthetic resin such as polypropylene, and a press-fitting vertical hole for a plug body (4) portion of the cable clamp (1). And a mounting structure (8) having (6), and the cable holding tool (1).
Is folded in half around the thin hinge part (2) as a center, and at the time of closing, a horizontal hole (3) for pinching a cable is formed in the head and the body is guided down from the head. The part is formed in a vertically split plug body (4), and a gap (5) communicating from the plug end (4e) to the lateral hole (3) of the head is retained, and a float switch (12) is provided at the tip.
Clamping the cable (13) by pinching the cable (13) anchored in the cable into the cable pinching lateral hole (3) and press-fitting the plug body (4) into the press-fitting vertical hole (6). A cable support structure for a float switch in a submersible pump, characterized in that the press-fitting portion of the plug portion (4) and the press-fitting portion are both kept in a pressed state. [Claim 2] A cable holding tool for press-fitting a plug body (4) into a press-fitting vertical hole (6) formed in a seat (10b) provided on the upper surface of a peripheral portion of a pump casing (11) ( 1) is an opening start end face (3) of the lateral hole (3) for pinching the cable.
The cable support structure for a float switch in a submersible pump according to claim 1, characterized in that a) faces the pump outer wall (9) in an oblique manner.