JPH0122229Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The invention is used, for example, in an air conditioner consisting of an indoor unit and an outdoor unit, and is electrically connected to each unit, which is a wired body, via a connector. The present invention relates to an improvement of a lead wire attachment and fixing device for attaching and fixing a plurality of lead wires, which are crossover wires, to the unit.

[Technical background of the invention and its problems]

For example, in an air conditioner consisting of an indoor unit and an outdoor unit, the units are electrically connected by crossover wires. Conventionally, the crossover wire and each unit are connected by a lead wire connecting device as shown in FIGS. 1 to 3. That is, 1 is, for example, a main body of an indoor unit, and a mounting portion 2 is integrally provided at the lower end of one side of the main body 1. The upper and lower end surfaces of the mounting portion 2 each protrude, and an insertion hole 3 (only one of which is shown) is opened.
A recess is formed between the upper and lower end surfaces, and the protrusion 4 is integrally provided here. Furthermore, an insertion hole 5 and a screw hole 6 are provided at the end of this concave surface, spaced apart from each other. A connector 7 has a concave groove 8 that fits into the protrusion 4, and a plurality of connection holes 9 are provided on the same surface as the back side of the main body 1. Signal lines 10 are connected and fixed inside from the other side. The other ends of these signal lines 10 are connected to a control circuit (not shown) inside the main body 1. The ends of the connecting wires 11 are inserted into the connecting holes 9 in the form of bare wires with their coverings peeled off. Within the connector 7, the ends of the crossover wires 11 come into contact with the ends of the signal lines 10, respectively, to establish an electrical connection. Reference numeral 12 denotes a holder, and claw portions 13 and 1 are integrally provided on the upper and lower edges of the holder, respectively.
3 is inserted into the insertion hole 3 of the main body 1, the connector 7 can be attached and fixed to the main body 1. Reference numeral 14 denotes a cord clamp, and a claw 15 is integrally provided at the upper end thereof, a through hole 16 is provided at the lower part, and a bulge is formed between these. By inserting the claw portion 15 into the insertion hole 5 provided in the main body 1 and screwing the mounting screw 17 into the screw hole 6 through the through hole,
The crossover wire 11 can be pressed and fixed to the main body 1.

In this way, the lead wires are attached and fixed for attaching and fixing the plurality of crossover wires 11, 11 to the main body 1 using the insertion hole 5, screw hole 6, cord clamp 14 and mounting screw 17 provided in the main body 1. Although the device was constructed, there was a problem in that the connecting wire 11 was not sufficiently secured. That is, the bulging portion of the cord clamp 14 presses a plurality of connecting wires 11 against the main body 1 at the same time, but the difference between the bulging dimension of the portion of the cord clamp 14 to which the connecting wires 11 are attached and the diameter of the connecting wires 11 is small, and sufficient pressing force against the crossover wire 11 is not exerted. For this reason, the connecting wire 11 may be inadvertently touched, or the connecting wire 11 may be elastically deformed due to changes over time, further weakening the pressing force of the cord clamp 14 and loosening the attachment portion of the connecting wire 11. In this state, crossover wire 11
If they come into contact with each other, the contact between the signal line 10 and the crossover wire 11 inside the connector 7 is likely to become defective. If left as is, the connector 7 itself will generate heat, and in some cases, heat will be transferred to the main body 1. Since the main body 1 is usually made of a synthetic resin material, it is sensitive to heat and may even be carbonized or burned.

Therefore, efforts have been made to improve the cord clamp structure and to make the connecting wire 11 more firmly attached and fixed. For example, if the bulging dimension of the cord clamp is made extremely small to create a large dimensional difference with respect to the diameter of the crossover wire 11, and the mounting screw 17 is screwed in, the pressing force of the cord clamp against the crossover wire 11 will act extremely strongly. Create a structure that allows Naturally, the cord clamp is provided with a claw portion, which engages with the insertion hole 5 of the main body 1. Therefore, this cord clamp connects multiple crossover wires 11 to the main body 1.
In addition to firmly pressing the mounting screw 17, a reaction force against the mounting screw 17 acts to prevent it from loosening.

In this way, the crossover wire 11 due to changes over time can be
There is no looseness, but on the other hand, there is a problem. That is, the cord clamp has a bulging dimension that is extremely smaller than the diameter of the crossover wire 11, and both ends of the cord clamp are forcibly locked to the main body 1 by the claws and the mounting screws 17, so that the expansion that presses the crossover wire 11 does not occur. The protruding portion is forcibly deformed elastically and forms a curve. The crossover wires 11 are firmly pressed and crushed together, but due to the cord clamp, they are brought into close contact with each other. Each crossover wire 11 itself is formed by bundling a plurality of thin wires covered with bare wires and further covering them in double or triple layers. When connecting to the connector 7, the coating is removed to expose the thin wires, but if the crossover wires 11 are in close contact with each other with the cord clamp, the thin wires will also be tightly connected or intertwined with each other, and the wires will be connected to the connector. 7 becomes extremely troublesome.

[Purpose of invention]

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to securely attach and fix multiple lead wires to a wired object without causing any loosening, and to reduce the heat applied to the wired object. It is an object of the present invention to provide a lead wire mounting and fixing device which prevents physical damage and improves safety, and which installs the lead wires so that they are separated from each other and facilitates connection to a connector.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described based on the drawings. In FIGS. 4 to 7, reference numeral 20 indicates a body to be wired, for example, the indoor unit body. The main body 20 is made of a heat-resistant material such as a synthetic resin material, and is provided with an electric appliance 20a such as a blower, an operation panel (not shown), and a control circuit inside, which are electrically connected to each other. A mounting portion 21 is integrally provided at the lower end of one side of the main body 20. This mounting portion 21 has upper and lower end surfaces protruding from each other, and an insertion hole (only one is shown).
21a is provided. A recess is formed between the upper and lower end surfaces, and a protrusion 22 is integrally provided in the vertical direction. Furthermore, an insertion hole 23 is provided at the end of this concave surface. 25 is a connector bar (hereinafter referred to as base), which is made of a heat-resistant material such as a steel plate. The upper and lower edges of the base 25 are integrally provided with claw portions 26, 26 that engage with the insertion hole 21a by utilizing the elasticity of the attachment portion 21. Further, a long hole 27 is opened in the substantially central portion extending in the vertical direction. This elongated hole 27 is
It is designed to fit into 2. A cord clamp attachment portion 28 that is spaced apart from the long hole 27 by a predetermined distance and protrudes toward the front side in the figure, that is, toward the side opposite to the main body 20.
will be provided. An insertion hole 29 is opened at the upper end of the cord clamp attachment portion 28, and a portion thereof has a screw seat 30 formed to protrude further toward the front side. This screw seat 30 is provided with a screw hole 31 . A connector 32 is made of an electrically insulating material and has a size such that its upper and lower end surfaces and one side surface fit into the base 25. Inside, there are a plurality of signal lines 33 extending from the control circuit.
is connected. A plurality of connection holes 34 are opened at predetermined intervals on the surface opposite to the surface into which these signal lines 33 are inserted. Into each connection hole 34, for example, the end of a lead wire 35, which is a crossover wire extending from an outdoor unit, is inserted with its coating removed and the lead wire 35 turned into a bare wire. Then, inside the connector 32, the lead wires 35... are connected to each signal line 33...
are in contact with each other and electrically connected to each other. Note that since these contacts utilize elasticity, the lead wires 35 can be attached to and detached from the connector 32 at will.
36 is a holder, which is made of a heat-resistant material such as a steel plate. The above-mentioned insertion hole 21a and the electric appliance 2 are attached to the upper and lower edges by using the elasticity of the mounting part 21.
Claw portions 37, 37 that engage with a portion (concave groove) of Oa are integrally provided. In addition, the edges on both sides are bent to match the edges and step portions of the connector 32.
8 is provided. 39 is a cord clamp,
A claw portion 40 that engages with an insertion hole 29 provided in the base 25 is integrally provided on its upper edge. A fixing part 41 that joins the cord clamp attachment part 28 of the base 25 protrudes from approximately the center, and a through hole 42 is bored in this part. Further, a portion of the cord clamp 39 on the connector 32 side is bent toward the front side to form a covering portion 43. The above through hole 4
A mounting screw 44 is screwed into the screw hole 31 through the screw hole 31. As a result, the screw seat 30 and the fixing part 41 are joined, and these are interposed between the lead wires 35, 35, and constitute a lead wire attachment and fixing device. In other words, the lead wire attachment and fixing device is
Fixing part 4 of screw seat 30 and cord clamp 39 of 5
1, the lead wires 35, 35 can be inserted between the upper and lower portions and evenly pressed and clamped. The portions of the lead wires 35 that protrude from the connector 32 are the covering portions 43 of the cord clamps 39.
It will be covered with

By configuring the lead wire connection device in this way, even if there is a poor contact between the lead wires 35 and the signal wires 33 and the connector 32 generates heat, the connection between the connector 32 and the main body 20 will be reduced. Since the base 25 made of a heat-resistant material is interposed therebetween, heat transfer to the main body 20 can be prevented, and this thermal deformation can be avoided.

In the above lead wire attachment and fixing device, the plurality of lead wires 35, 35 are connected between the screw seats 30 of the base 25 and the fixing portion 41 of the cord clamp 39 between the upper and lower portions.
5 and 35 are clamped and fixed, once the connector 32
There is no loosening of the lead wires 35, 35 connected to the screw seat 3, and each lead wire 35, 35 is connected to the screw
0 and the fixing part 41, and the lead wire 35 is connected to the connector 32.
The thin wires that make up the wires do not intertwine with each other. Furthermore, due to its shape, the cord clamp 39 can uniformly apply a pressing force to the lead wires 35. The cover 43 of the cord clamp 39 is the connector 3 of the lead wire 35...
There is no need to apply extra pressure to the portions protruding from the lead wires 35, and the contact portions of the signal wires 33 of the lead wires 35 do not tilt, thereby ensuring reliable contact.

Further, since the holder 36 is made of a heat-resistant material, even if the connector 32 generates heat, the heat can be prevented from dissipating to the surroundings, and no adverse thermal effects will occur.

In the above embodiment, the base 25, the connector 32, and the holder 36 are attached to the mounting portion 21 of the main body 20.
Although the cord clamp 39 and the cord clamp 39 are attached in this order, the present invention is not limited to this attachment means. For example, if the gap between the side surface of the main body 20 on the side of the mounting portion 21 and the installation surface is extremely narrow, the mounting screw 44 cannot be screwed in, so the mounting is performed as described below. That is, as shown in FIG. 8, the connector 32 is fitted to the base 25, and the lead wires 35 are connected to the connector 32. These lead wires 35... are connected to the cord clamp 39
and the base 25, and screw the mounting screws 44 to evenly clamp and fix the lead wires 35. Next, the connector 32 is covered with the holder 36 and is moved to the mounting portion 21 of the main body 20 while being sandwiched between the connector 32 and the base 25, and is mounted there. Therefore, not only installation but also removal can be performed without any gap between the side surface of the main body 20 and the surface on which it is disposed, resulting in good workability.

Further, in the above embodiment, the indoor unit of an air conditioner is applied as the wiring object 20, but the invention is not limited to this, and of course can be applied to any device that requires electrical connection. It is.

[Effect of idea]

As explained above, according to the present invention, a fixing part is formed protruding around the through hole of the cord clamp, and the lead wires are individually fitted on both sides of the fixing part by screwing the cord clamp into the mounting screw, and Since the above-mentioned fixing part is interposed between these lead wires, the lead wires are separated from each other and are pressed and fixed to the wired object, so it is possible to hold multiple lead wires uniformly and prevent contact failures. . Therefore, there is no heat generation in the connector and no thermal deformation of the wired body, improving safety. Furthermore, since the lead wires are separated from each other at the fixed portion of the cord clamp, the connection work to the connector becomes easy and reliable, and the workability and reliability can be improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a lead wire connection device showing a conventional example of the present invention, Fig. 2 is an exploded perspective view thereof, Fig. 3 is a partial longitudinal sectional view thereof, and Fig. 4 is an embodiment of the present invention. FIG. 5 is a vertical side view of the lead wire connecting device shown in FIG. be. 20... Wired object (main body of indoor unit), 3
2... Connector, 35... Lead wire, 39... Cord clamp, 29... Insertion hole, 31... Screw hole, 40... Claw portion, 42... Through hole, 44... Mounting screw, 41... ...Fixed part, 43... Cover part.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a lead wire attachment and fixing device that presses and fixes a plurality of lead wires that are electrically connected to a wired object via a connector to the wired object, An insertion hole provided in the insertion hole, a screw hole provided apart from the insertion hole, and a claw portion at the end thereof that engages with the insertion hole, and a through hole provided apart from the claw portion. and a mounting screw that is screwed into a screw hole of a wired object through the through hole of the cord clamp and screws the cord clamp to the wired object, A fixing part is formed protruding from the mounting screw and is attached and fixed to the wired object by screwing the cord clamp of the mounting screw, and the lead wires are individually fitted on both sides of the fixing part, and the fixing part is provided between these parts. A lead wire mounting and fixing device characterized in that the lead wires are spaced apart from each other and fixed by pressure to a wired object by intervening parts. (2) The lead wire attachment and fixing device according to claim 1, wherein the cord clamp is provided with a covering portion that covers a protruding portion of the connector of the lead wire.