JPH0130872Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an assembly device for electrical components used in a single-phase induction motor.

Generally, a single-phase induction motor uses a starting relay made of a positive temperature characteristic thermistor to start the motor, and an overload protection device made of a bimetal to protect the single-phase induction motor as electrical components.

Conventionally, the starting relay was housed in the electrical equipment box of the single-phase induction motor, and the overload protection device was attached to the surface of the single-phase induction motor. However, if the starting relay and overload protection device were installed in separate locations as described above, not only would additional mounting parts such as screws and mounting plates be required, but also the wiring between them would be troublesome. It has the disadvantage that it costs more.

Therefore, by integrating the starting relay and overload protection device, and attaching this integrated electrical component to the surface of the single-phase induction motor,
It is being considered to make it easier for the heat of the single-phase induction motor to be transferred to the starting relay, thereby reducing the power consumption by this starting relay. However, in this case, if the starting relay and overload protection device are not securely integrated without rattling, there is a problem that the electrical components will generate noise such as chatter due to vibration from the single-phase induction motor. occurs.

This idea was made based on the above circumstances,
The purpose is to provide an electrical component assembly device for a single-phase induction motor that allows a starting relay and an overload protection device to be reliably integrated using a support without rattling. be.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, numeral 1 is a support made of an insulating material such as synthetic resin. At one end of this support 1, a pair of first engagement grooves 2, 2 are formed on both side surfaces, and the width of the support 1 on the distal side of these first engagement grooves 2, 2 is A second engagement groove 3 is bored in the central portion in the direction. Furthermore, three circular hole-shaped receiving portions 4 are bored at one end of the support 1. A starting relay 5 is attached to the first and second engaging grooves 2, 2, and 3. This starting relay 5 is provided with a positive temperature characteristic thermistor 6 inside thereof, and a pair of terminals 7, one end of which is in contact with both ends of the thermistor 6, the other ends of which protrude from one side. Furthermore, three legs 8... corresponding to the first and second engagement grooves 2, 2, and 3 are protruded from the lower surface of the starting relay 5, and these legs 8... It is engaged with the engagement grooves 2, 2, and 3 of No. 2. The leg portion 8 engaged with the second engagement groove 3 is longer than the thickness dimension of the support body 1, and its end portion protrudes toward the lower surface side of the support body 1. A recess 9 extending across the entire length of the leg 8 in the width direction is formed in this protruding portion.
A support rod 10 having elasticity made of steel wire or the like is engaged at its midpoint. Both ends of the support rod 10 engage with stepped portions 12, 12 of protrusions 11, 11 provided on both sides of one end on the lower surface side of the support body 1. That is, the support rod 10 is
After one of the legs 8 is made to protrude from the second engagement groove 3, a recess 9 is formed in this leg 8.
and the step portions 12, 12 are elastically engaged.
Therefore, the starting relay 5 can be displaced in the left-right rotation direction on the support body 1 by the three legs 8 engaged with the first and second engagement grooves 2, 2, 3. It is also prevented from being pulled out of the support 1 by a support rod 10 that engages in a recess 9 in one of the legs 8.

Further, a mounting hole 13 is bored at the other end of the support body 1 . An overload protection device 15 having a built-in bimetal 14 is fitted into this mounting hole 13 . On the inner peripheral surface of the mounting hole 13, for example, two positioning grooves 16, 16 with one end open on the upper surface of the support 1 are carved at 180 degree intervals in the circumferential direction. A pair of protrusions 1 that engage with the positioning grooves 16, 16 are provided on the outer peripheral surface.
7 and 17 are provided protrudingly. Further, a pair of terminals 18, 18 are protruded from the upper surface of the overload protection device 15 and are connected to contacts (not shown) in which both ends of the bimetal 14 are electrically contacted. One end of a connecting body 19 commonly called a plug-in socket is connected to one terminal 18. This connection body 1
9 is made of a copper plate or the like and bent into a substantially clamp shape, and presses against the upper surface of the overload protection device 15 with an L-shaped portion at one end thereof. Therefore, the overload protection device 15 is prevented from slipping out of the mounting hole 13 by the connecting body 19, and is also prevented from wobbling in the circumferential direction due to the engagement between the projections 17, 17 and the positioning grooves 16, 16. is being prevented.

The middle portion of the connecting body 19 is engaged with a positioning recess 20 formed on the upper surface of the support 1, and the portion engaged with this positioning recess 20 is held by the lower surface of the starting relay 5. There is. Further, a socket portion 21 is formed at the other end of the connecting body 19, and this socket portion 21 is fitted into one of the receiving portions 4 bored in the support body 1. In addition, the remaining 2
The two receiving parts 4, 4 also have sockets 22, 2, respectively.
2 are inserted, and one of the sockets 22 is connected to one terminal 7 of the starting relay 5 as shown in FIG.
The other socket 22 is connected to the capacitor 2
3 to the other terminal 7 of the starting relay 5. Furthermore, one terminal 7 of the starting relay 5
and the other terminal 18 of the overload protection device 15 are connected to a power source 24 . Therefore, three pins 26 protruding from the surface of the single-phase induction motor 25...
By connecting to the socket part 21 and the sockets 22, 22, the socket part 21 is connected to the joint part of the main winding 27 and the auxiliary winding 28, and one socket 22 is connected to the main winding 27, and the other socket is connected to the main winding 27. 2
2 is connected to the auxiliary winding 28.

According to the electrical component assembly apparatus configured in this way, the starting relay 5 and the overload protection device 15 can be integrated by the support 1, and the starting relay 5 has its legs 8... 1. The support rod 10 is securely attached to the support body 1 by the engagement with the second engagement grooves 2, 2, and 3 and the support rod 10 engaged with the recess 9 of the leg portion 8 protruding from the second engagement groove 3. Retained. Further, the upper surface of the overload protection device 15 fitted into the mounting hole 13 of the support body 1 is pressed by one end portion of a connecting body 19 whose one end is connected to this one terminal 18.
Therefore, even if this electrical parts assembly device is attached to the surface of the single-phase induction motor 25, the vibration of the motor 25 may cause the starting relay 5 and overload protection device 15 to
There will be no rattling and noisy noise.

As described above, in the present invention, a plurality of engagement grooves are formed in the support body, and a mounting hole is bored, and the legs of the starting relay are engaged with the engagement grooves, and the legs protrude from the bottom side of the support body. A recess is formed in the leg of the overload protector, and the support rod is engaged with the recess, while one end is connected to a terminal protruding from the top surface of the overload protection device that is fitted into the mounting hole, and the other end is connected to a socket. A connecting body was provided by fitting the part into a receiving part bored in the support. Therefore, the starting relay is securely held on the support by the engagement of the legs with the engagement grooves and the support rods engaged in the recesses of the legs, and the overload protection device is held at one end of the connection body. Since the starting relay and the overload protection device are securely held in the mounting hole by the above-described structure, the starting relay and the overload protection device can be integrated without being rattled by the vibrations of the single-phase induction motor.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a bottom view, FIG. 3 is a top view of the support with the starting relay removed, and FIG. 4 is a circuit diagram. DESCRIPTION OF SYMBOLS 1... Support body, 2, 3... Engagement groove, 4... Receiving part, 5... Starting relay, 8... Leg part, 9... Recessed part, 10... Support rod, 13... Mounting hole, 15...
Overload protection device, 18...terminal, 19...connection body, 21...socket section.

Claims (1)

[Scope of utility model registration request] A support body, a plurality of engagement grooves formed in the support body, and a plurality of leg portions corresponding to the engagement grooves, and these leg portions are engaged with the engagement grooves to be attached to the upper surface of the support body. A starting relay consisting of an attached positive temperature characteristic thermistor, a recess formed along the width direction of the leg protruding from the lower surface side of the support of this starting relay, and a middle part engaged with this recess, and both ends A support rod held by the support, an overload protection device fitted into a mounting hole formed in the support, and one end connected to a terminal protruding from the top surface of the overload protection device. and a connecting body in which a socket portion formed at the other end is fitted into a receiving portion drilled in the support body.