KR20150033313A

KR20150033313A - Cable connector for driving the vibrator

Info

Publication number: KR20150033313A
Application number: KR1020130113153A
Authority: KR
Inventors: 박정혜
Original assignee: 박정혜
Priority date: 2013-09-24
Filing date: 2013-09-24
Publication date: 2015-04-01

Abstract

The present invention relates to a cable connecting device for driving a vibrator for pouring concrete, which is used for removing bubbles contained in a mortar during a concrete pouring operation in the course of constructing a building, The cable with the built-in wire is effectively connected to the motor so that the power is transmitted.
To this end, a vibrator drive cable connection device for connecting a wire (15) exposed at the tip of a cable (14) to an output shaft (13) of a motor to transmit the power of the motor to a vibrator, A cover 12 fixed to one end of the motor and having a boss 12a having an insertion groove 12b and a cover 12 fixed to one end of the cable and fixed to the insertion groove 12b of the boss 12a An O-ring 18 provided at a joint portion between the boss and the adapter to maintain airtightness therebetween, an adapter 17 provided on the boss 12a, (20) for preventing the cover (12) from being rotated by the adapter (17).

Description

Cable connection device for driving a vibrator {omitted}

The present invention relates to a vibrator for pouring concrete used for removing bubbles contained in mortar during concrete pouring work in the process of constructing a building, and more particularly to a vibrator for pouring concrete, And more particularly, to a cable connecting device for driving a vibrator that effectively connects a cable with a wire to a motor to transmit power.

Generally, a process of constructing a concrete using a concrete mortar at a construction site will be briefly described as follows.

First, in order to maintain sufficient strength according to the casting of concrete mortar, several strands of reinforcing steel are appropriately arranged at the pouring place of the concrete mortar and bundled with fine wire, and then the mold is wrapped around the outer wall.

When the work of installing the formwork is completed, the cement, sand and gravel are mixed with the water, and the concrete mortar mixed with the concrete is transported by the remicon vehicle and put into the concrete mortar.

As mentioned above, when the concrete mortar is laid between the dies, after curing process for a certain period, the skeleton of the building is constructed by removing the dies.

However, before putting the concrete mortar carried by the ready-mixed concrete into the concrete mallet, there are a lot of minute bubbles in the concrete mortar. Therefore, when the concrete mortar is cured without removing the bubbles, The strength of the concrete is remarkably reduced and the risk of collapse is implied.

Therefore, bubbles must be removed when casting concrete mortar. The equipment used at this time is a vibrator.

The vibrator acts to remove bubbles present in the mortar by applying a rapid vibration to the mortar during the pouring operation of the concrete mortar.

The vibrator having such a function is installed inside the cable and fixed to the lower end of the rotating wire according to the driving of the motor. The tip of the cable with the wire is connected to the motor so that the power of the motor is transmitted to the vibrator through the wire So that the vibrator is provided with a device for connecting the tip of the motor and the cable.

Fig. 1 is a longitudinal sectional view showing a conventional cable connecting apparatus. In Fig. 1, an adapter 3 having a small diameter portion 3a is fixed to the tip of a cable 1 provided with a wire 2 therein, (Not shown) of the small-diameter portion 3a of the body 3 is provided.

At this time, the tip end and the lower end of the wire 2 embedded in the cable 1 are coupled to the motor 4 and the vibrator (not shown) in a one-touch manner with a hexagonal cross section.

Therefore, when the wire 2 exposed at one end of the cable 1 fixed to the adapter 3 is coupled to one end of the motor 4, the locker (not shown) of the motor 4 is attached to the small- 5 are fitted and locked so that assembly of these parts is completed, whereby the power of the motor 4 is transmitted to the wire 2, so that the vibrator is driven.

However, such a conventional apparatus has the following problems.

First, since the cable and the adapter are configured to be simply coupled by the locker, the airtightness is not maintained between them, so that water seeps through the gap therebetween, and a short circuit is generated.

Second, since the driving motor is a heavy body, there is a limitation in moving the position of the motor freely when the vibrator is used. Inevitably, the length of the expensive cable can not be set long, The cable is broken due to the twist of the cable due to the rotation, so that there is a fatal defect that the bubble removing operation can not be performed.

When a small motor is used to prevent this, the cable will not rotate due to the heavy weight of the wire while the cable with the built-in cable rotates. However, since the coupling part of the motor is rotated by the adapter, the small light motor is rotated together with the wire, Or an electric shock due to a short circuit occurred.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a conventional problem, and it is an object of the present invention to drastically improve a connection part of a boss and a cable so as to fundamentally solve the phenomenon of water penetration into the bonding part.

Another object of the present invention is to prevent the occurrence of a safety accident by preventing the motor from rotating together with the centrifugal force due to the rotation of the wire when the vibrator is driven while using a small motor.

Another object of the present invention is to reduce the length of the cable by allowing the concrete to be poured in a state of holding the motor by using a small motor so as to reduce the cost and to maximize the life of the cable .

According to an aspect of the present invention for achieving the above object, there is provided a vibrator drive cable connection device for connecting a wire exposed at a cable end to an output shaft of a motor to transmit power of a motor to a vibrator, A cover fixed to one end of the motor and having a boss having an insertion groove; an adapter fixed to a front end of the cable and coupled to the insertion groove of the boss; And an anti-rotation means provided on the boss for maintaining the state of the adapter and preventing rotation of the cover by the adapter.

The present invention has the following advantages over the conventional device.

First, an o-ring is provided at the connection part of the boss and the cable to maintain the airtightness of these joint parts, so that the phenomenon of penetration of water between them can be fundamentally eliminated.

Second, since the motor is not rotated together with the centrifugal force due to the rotation of the wire when the vibrator is driven, a safety accident can be prevented.

Third, by using a small motor, it is possible to reduce the length of the cable because the concrete can be poured in a state of holding the motor, thereby reducing the production cost and fundamentally eliminating the twist of the cable So that the lifetime of the expensive cable can be maximized.

1 is a longitudinal sectional view showing a conventional cable connecting apparatus
Figs. 2 and 3 are longitudinal sectional views showing the construction of the present invention,
Fig. 2 is a state in which the wire exposed at the tip of the cable is separated from the output shaft of the motor
3 is a state in which a wire exposed at the tip of the cable is connected to the output shaft of the motor
4 is a perspective view showing a part of an adapter applied to the present invention;

Hereinafter, the present invention will be described in more detail with reference to FIGS. 2 to 4 showing an embodiment.

Fig. 4 is a perspective view showing a part of an adapter applied to the present invention. Fig. 4 is a perspective view showing a part of an adapter according to the present invention. And the wire 15 exposed at the front end of the cable 14 is connected to the output shaft 13 of the small motor located in the insertion groove 12b of the boss. And a hexagonal nut 16 for screwing one end of the wire 15 into the hexagonal nut so as to be coupled to each other.

The configuration for coupling one end of the wire 15 to the output shaft 13 of the small motor 11 is the same as that of the conventional art, and therefore, a detailed description thereof will be omitted.

An adapter 17 or a boss 12a which is fixed to the tip end of the cable 14 is provided with an O-ring 18 for maintaining airtightness therebetween. And the rotation preventing means 20 provided in the first arm 12a maintains the engaged state.

In the embodiment of the present invention, as shown in FIGS. 2 and 3, the adapter 17 is provided with the concave groove 17a and the O-ring 18 is inserted into the concave groove to maintain the airtightness. On the contrary, it is understandable that an O-ring can be provided inside the boss 12a.

Rotation preventing means for preventing the cover 12 from being rotated by the adapter while maintaining the state of the adapter 17 is provided. In an embodiment of the present invention, at least one or more independent locking grooves A housing 21 fixed to the outer circumferential surface of the boss 12a and a resiliently biased coil spring 22 movably inserted into the housing so as to be inserted into any one of the locking grooves 19, A washer 24 fixed to the outer circumferential surface of the rocker to compress the coil spring and an operating member 25 installed to be wrapped around the housing to move the locker 23, It is understandable that the present invention can be applied in various forms by experts of the present invention.

At this time, when the knob 25a is formed on the operation member 25, it is more convenient to pull the locker 23 to separate the cable 14 from the boss 12a.

The metal fixing ring 26 is pressed and fixed to prevent the adapter 17 from separating from the outer circumferential surface of the cable 14 to prevent moisture from penetrating into the cable 14, The adapter 17 is prevented from being detached from the cable 14 even if the small motor 11 is driven to generate vibration.

The small motor 11 used in the present invention may use a DC motor having a RPM of about 4,000, but it is more preferable to apply a BLDC motor so as to minimize the occurrence of noise and vibration.

Hereinafter, the operation of the present invention will be described.

2 is a state in which the wire exposed at the tip of the cable is separated from the output shaft of the motor.

In this state, when removing the bubbles from the concrete laid using the vibrator, the adapter 17 fixed to the tip of the cable 14 should be coupled to the insertion groove 12b of the boss 12a.

This is achieved by grasping the handle 25a of the operating member 25 and then moving the operating member 25 in the direction of the arrow shown in Figure 2 so that the locking member 23 of the locking member 23 positioned in the insertion groove 12b of the boss 12a The adapter 17 can be assembled into the insertion groove 12b since the tip end is accommodated in the inside of the housing 21. [

Thereafter, when the wire 15 exposed at the tip of the cable 14 is pushed into the hexagonal nut 16 screwed to the output shaft 13 of the small motor 11, the metal 14 is fixed to one end of the cable 14 The adapter 17 fixed by the ring 26 is inserted into the insertion groove 12b formed in the boss 12a so that the adapter 17 and the boss 12a are engaged with each other. So that the airtightness between them is maintained.

After the adapter 17 is assembled to the boss 12a of the cover 12 as described above, any one of the locking grooves 19 formed on the outer circumferential surface of the adapter 17 is fitted to the locker 23, 25 or the locker 23 is retracted using the operation member 25 and the adapter 17 is fully inserted into the insertion groove 12b and the external force is removed from the operation member 25 The locker 23 is moved to the left in the drawing by the restoring force of the coil spring 22 at the time when the locker 23 coincides with one of the locking grooves 19, 19 so that the cable 14 is connected to the small-sized motor 11, so that the assembling work of these is completed.

When the adapter 17 fixed to the end of the cable 14 is fixed to the insertion groove 12b of the cover 12 fixed to the small motor 11 by the rotation preventing means as described above, Even if the output shaft 13 is rotated by rotating the small motor 11 to rotate the wire 15 to operate the vibrator as the weight 11 is kept united by the locker 23, Thereby preventing the small-sized motor 11, which is lightly connected,

Accordingly, even if the operator operates the vibrator while holding the small-sized motor 11 as a lightweight member, the small motor 11 is not rotated together with the wire 15, so that the length of the cable 14, It is possible to reduce the twisting of the cable 14 when the vibrator is driven, thereby maximizing the service life of the cable and significantly reducing the production cost.

It is to be noted that the technical spirit of the present invention has been specifically described according to the above-described preferred embodiments, but it should be noted that the above-described embodiments are intended to be illustrative and not restrictive.

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

11: Small motor 12: Cover
12a: Boss 12b: Insert groove
14: cable 15: wire
17: Adapter 18: O ring
20: rotation preventing means 21: housing
23: Rocker 25: Operational member
26: metal retaining ring

Claims

A cable connecting device for a vibrator drive for connecting a wire (15) exposed at a front end of a cable (14) to an output shaft (13) of a motor to transmit power of a motor to a vibrator, A cover 12 fixed to one end of the motor and provided with a boss 12a having an insertion groove 12b and an adapter 12 fixed to the front end of the cable 14 and coupled to the insertion groove 12b of the boss 12a, (17), an O-ring (18) provided at a joint portion between the boss and the adapter to maintain airtightness therebetween, and an adapter (17) And a rotation preventing means (20) for preventing the cover (12) from rotating.

The method according to claim 1,
The rotation preventing means includes at least one or more independent locking grooves 19 formed on the outer peripheral surface of the adapter 17, a housing 21 fixed to the outer peripheral surface of the boss 12a, A locker 23 which is resiliently mounted by a coil spring 22 and is fitted in one of the locking grooves 19; a washer 24 fixed to the outer circumferential surface of the locker to compress the coil spring; And an operating member (25) for moving the rocker (23).

The method of claim 2,
And a knob (25a) is formed on the operating member (25).

The method according to claim 1,
Characterized in that a metal fixing ring (26) is press-fitted and fixed to the outer circumferential surface of the cable (14) to prevent the adapter (17) from coming off.