JP2592892Y2 - Cable support structure of float switch in submersible pump - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable support structure of a float switch for automatically controlling the operation of a submersible pump.

[0002]

2. Description of the Related Art It is known that a float switch in a submersible pump can adjust a control water level by changing a length of a free bending portion of a cable.

However, in the conventional cable support structure, as shown in FIG. 10, a rubber ring 1 'is fitted to a rod-like support 10a' which is circumscribed by a submersible pump, and a cable 13 of a float switch 12 'is connected. Is fixed to the outside of the rubber ring 1 'with an adhesive, and the level of the control water level can be adjusted by moving the fitting position of the rubber ring 1' up and down on the rod-shaped support 10a '. It is done in.

[0004]

In the above-mentioned conventional cable structure, since the length of the free bending portion 13'f of the cable 13 'cannot be changed, the control width of the water level cannot be increased. Therefore, the automatic operation control of the submersible pump cannot function in a deep water tank.

It is an object of the present invention that the control range of the water level by the float switch can be arbitrarily adjusted, and the automatic operation control of the submersible pump functions reliably in a deep or shallow water tank. It is an object of the present invention to provide a cable supporting structure capable of easily changing the length of a free bending portion of a cable.

[0006]

Cable support structure of the float switch in the water pump according to the invention of the structure present invention includes a cable pincer which is molded of a synthetic resin such as polypropylene, the press-fitting start-holes of the below mentioned stopper portion in the cable pincer The cable holding device is closed in two folds around a thinly formed hinge portion. At the time of the closing, a lateral hole for cable holding is formed in the head, and Is formed in a vertically split plug body, a gap from the plug end to the side hole of the head is retained, and the cable with a float switch anchored at the tip is pinched by the cable. The outer diameter of the plug portion is formed to be slightly larger than the inner diameter of the press-fitting vertical hole by being sandwiched in the side hole, and the plug portion is press-fitted into the press-fitting vertical hole, thereby forming the cable. Off in the configuration underwater pump to press-fit portion of the wear part and the plug are both kept pressure merging state
A cable support structure for a funnel switch,
The cable clamp that press-fits the plug into the service hole is a cable
The opening start end of the horizontal hole for holding the pump faces the pump outer wall obliquely.
It is doing.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments will be described below with reference to the drawings.

Reference numeral 1 denotes a cable holding device, which is formed of an insulating synthetic resin such as polypropylene and the like, which is rich in bending characteristics, and is folded in two around a thin hinge portion 2 serving as a fulcrum. , A cable-holding lateral hole 3 is formed in the head, and a trunk portion guided from a position directly below the head to the opening start end face 3a side of the cable-holding lateral hole 3 is vertically split. 4 and its plug end 4e
Further, a gap 5 communicating with the side hole 3 of the head is provided. And slightly larger than the inner diameter of the later press-fitting start-hole 6 the outer diameter of the plug body 4 portions or formed into a large diameter, or shape slightly smaller diameter than the outer diameter of the diameter of the cable clamping wearer transverse bore 3 cable 13 formed
If this is done, the compression operation described below occurs. Reference numeral 8 denotes a press-fitting vertical hole 6 in the plug 4 portion of the cable clamp 1.
And a press-fitting upright hole 6 in the plug 4 portion of the cable clamp 1, or a pump casing, for example, in which a cylindrical end of a cylindrical body 10 a erected along the outer wall 9 of the submersible pump is provided. 11 which is provided on the upper surface of the peripheral portion of 11
A circular hole is formed in Ob to form a press-fitting vertical hole 6 of the plug 4 in the cable clamp 1. 7a is a screw hole provided in the mounting structure 8, and 7b is a screw hole formed in the plug 4 portion of the cable clamp 1 in a direction perpendicular to the gap 5.

At the time of use, the cable clamp 1 is folded in two with the hinge 2 as a fulcrum, and a cable 13 having a float switch 12 moored at the end thereof is clamped in the cable lateral hole 3 for free bending. With the bent portion 13f adjusted to an arbitrary length, the plug 4 portion of the cable clamp 1 is press-fitted into the press-fitting vertical hole 6, and if necessary, the screw hole 7 is formed.
Screws are provided using a and 7b. In this case, the holding tool which clamps the cable of the upper float switch for detecting the rising limit of the water level is press-fitted into the press-fitting hole 6 from the upper end of the cylindrical body 10a, and the lower float switch for detecting the lowering limit of the water level is provided. The holding device holding the cable is a cylindrical body 10
It is assumed that the lower end portion a is press-fitted into the press-fitting vertical hole 6 or press-fitted into the press-fitting vertical hole 6 formed in the peripheral upper surface seat 10b of the pump casing 11. And as already mentioned,
The hole diameter of the lateral hole 3 in the cable clamp 1 is
If the diameter is slightly smaller than the outer diameter of the cable 13
The plug 4 part expands due to the pinching, and presses against the inner peripheral surface of the upright hole 6, and the outer shape of the plug 4 part in the cable clamp 1 is formed slightly larger in diameter than the inner diameter of the upright hole 6. If so, the plug 4 part is press-fitted into the upright hole 6 so that the hole diameter of the lateral hole 3 tends to shrink, and is pressed against the outer periphery of the cable 13 so that the clamping portion of the cable 13 and the press-fitting portion of the plug 4 are Both are kept in a pressed state. Therefore, the cable 13 is supported by the cable clamp 1 with its free bending portion 13f adjusted to an arbitrary length.

If the ridges 14 and 14 are provided on the inner peripheral surface of the lateral hole 3 of the cable clamp 1, the clamping effect is further increased and the cable 13 can be firmly held. Also, the upper surface seat 1 of the peripheral portion of the pump casing 11
In order to press-fit the plug 4 portion of the cable-clamping tool 1 into the press-fitting vertical hole 6 drilled at 0b, the cable-clamping lateral hole 3
The opening end surface 3b of the opening starting end surface 3a inwardly there because pressed toward the outside, and, without facing the transverse bore opening starting end surface 3a to the pump outer wall 9, in a manner that was facing the oblique交状of it's you installed. If the cable clamp 1 is mounted in such a manner, even in a confined space close to the pump outer wall 9, the gap between the opposing surfaces of the pump outer wall 9 and the side hole opening surface 3a is substantially enlarged. And the side hole opening surface 3a
The sharp bending of the cable 13 at the time can be reduced.

[0011]

According to the structure of the present invention, the mounting and dismounting of the float switch in the submersible pump can be performed easily and quickly, and the length of the free bending portion of the cable can be extremely easily adjusted. is the Ru arbitrarily set and changed by <br/> obtained. And the limit of the rise of the water level is detected as described above.
Clamp that holds the cable of the upper float switch
Is pressed into the press-fitting vertical hole 6 from the upper end of the cylindrical body 10a,
Lower float switch cable for detecting the lower limit of the position
Pincer was clamped to the pressure needful elevational from falling portion of the cylindrical body 10a
Press into the hole 6 or on the periphery of the pump casing 11
Since it is press-fitted into the press-fitting vertical hole 6 formed in the face seat portion 10b,
In this case, however, in this case, the opening end face 3a of the lateral hole opening is connected to the outer wall 9
Attached in an oblique manner without facing
By doing so, a narrow space close to the pump outer wall 9
Also, the pump outer wall 9 and the side hole opening surface 3a face each other.
The space between the surfaces is substantially enlarged, so that
Sudden bending of the cable 13 can be reduced.
There is an advantage to say.

[Brief description of the drawings]

FIG. 1 is a front view of the cable support structure of the present invention when a cable clamp is closed.

FIG. 2 is a side view of the cable support structure of the present invention when the cable clamp is closed;

FIG. 3 is a front view of the cable support structure of the present invention when the cable clamp is not closed.

FIG. 4 is a plan view of the cable clamp of FIG. 3 as viewed from below.

FIG. 5 is a vertical sectional front view taken along line AA of FIG. 2;

FIG. 6 is a vertical sectional side view of a main part showing an example in which a cylinder end of a cylinder erected along the outer wall of the submersible pump is used as an attachment structure in the cable support structure of the present invention.

FIG. 7 is a plan view of an essential part 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.

FIG. 8 is a vertical sectional side view of a main part of the submersible pump having the cable support structure of the present invention implemented by the mounting structure of FIG. 6;

FIG. 9 is a vertical sectional side view of a main part of the submersible pump having the 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 symbols]

 DESCRIPTION OF SYMBOLS 1 Cable holding | maintenance tool 2 Hinge part 3 Cable holding horizontal hole 3a Opening start end face 4 Vertically-shaped plug 4e Plug end 5 Gap 6 Press-fitting hole 8 Mounting structure 9 Pump outer wall 10b Seat 11 Pump casing 12 Float switch 13 Cable

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F04D 13/08 F04D 15/00 F16L 3/12 H01H 35/18 H02G 9/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A mounting structure having a cable clamp (1) molded of a synthetic resin such as polypropylene, and a press-fitting vertical hole (6) of a plug (4) described later in the cable clamp (1). (8), wherein the cable clamp (1) is folded in two around a thin hinge (2), and the cable clamp lateral hole (3) is formed in the head at the time of the closure. Is formed, and a torso guided from the head is formed in a vertically split plug (4), and a gap (4e) extending from the plug end (4e) to the side hole (3) of the head. 5) is held and a float switch (1
The cable (13) anchored to 2) is clamped in the cable clamping lateral hole (3) so that the outer diameter of the plug body (4) is slightly larger than the inner diameter of the press-fitting vertical hole (6). The plug (4) is press-fitted into the press-fitting vertical hole (6), so that the holding portion of the cable (13) and the press-fitting portion of the plug (4) are both in a press-fit state. To be kept
Support for float switch in a submerged pump
A plug (4) portion into the press-fitting vertical hole (6).
The cable clamp (1) for press-fitting
The opening start end face (3a) of the hole (3) is inclined with the pump outer wall (9).
It said that you are facing the 交状, cable support structure of the float switch in the water pump.