JPS61218026A - Casing having terminal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a casing having a terminal, and more specifically, a casing having a terminal, and more specifically, a casing formed of a molded product such as resin into a box shape with one side open, and into which various parts are housed. A casing having a base and having a plurality of terminal pieces protruding from the outer surface of the peripheral wall of the base, which are electrically connected to parts housed in the base and molded simultaneously with the base. be.

[Background technology 1] Generally, when a component with a mechanically moving part such as a relay is housed in this type of casing that has terminals, if the strength of the base is low, the characteristics of the mechanically moving part will change and reliability will decrease. There is a problem with doing so.

[Objective of the Invention 1 The present invention has been made in view of the above-mentioned points, and its main purpose is to increase the strength of the base formed by the molded product and to improve the strength of the base that is housed in the casing. It is an object of the present invention to provide a casing having a terminal which prevents the operational reliability of the parts from deteriorating and also prevents an increase in the number of parts by using a ready-made terminal as a reinforcing member of the base.

[Disclosure of the Invention 1 (Example) Examples of the present invention will be described below based on the drawings. In the following description, a polarized relay using the present invention will be exemplified.

As shown in FIG. 1, the casing 1 has a box-shaped base 11 that is open upward, and a box-shaped base 11 that is open downward, and is fitted from above the base 11 so as to cover the outside of the side wall of the base 11. It is composed of a cover 12.

The base 11 is a molded product made of an insulating material such as a synthetic resin and is formed into a substantially rectangular parallelepiped, and has recesses 13 with open upper and inner surfaces in the center of the longitudinal direction in both walls in the middle direction. It is formed. A contact piece 21 faces the bottom of each recess 13, and the contact piece 21 is integrally formed of a conductive plate with a common terminal piece 22 that is exposed outside the middle side wall of the base 11 and projects downward. . Lips 14 running vertically and having upper ends located below the upper surface of the base 11 are formed at the four inner corners of the base 11, respectively. rib 1
4 has a fixed contact plate 2 having a fixed contact 23 on the upper surface.
4 overlap, the fixing liquid and the ζ plate 24 are integrally formed of a conductive plate with a fixed terminal piece 25 that is exposed outside the middle side wall of the base 11 and protrudes downward. Notches 15 are formed in both longitudinal walls of the base 11 at the center in the width direction of the base 11, and are open upwardly and on the front and back sides of the side walls. A coil terminal coupling piece 26 is provided to protrude upward.

The coil terminal coupling piece 26 is integrally formed of a conductive plate with a coil terminal piece 27 that is exposed on the outside of both widthwise walls of the base 11 and projects downward. In this way, the contact piece 21 and the common terminal piece 22, the fixed contact plate 24 and the fixed terminal piece 25, and the coil terminal coupling piece 26 and the coil terminal piece 27 are each formed integrally with a conductive plate, and the base 11 and each conductive It is integrated with the plate by insert molding. The conductive plate is routed within the side wall of the base 11 so that the conductive plate is installed within the side wall of the base 11 over substantially the entire length thereof.

Therefore, the side wall of the base 11 is reinforced by the conductive plate, which increases the strength of the base 11 due to its box shape.

Like the base 11, the cover 12 is a molded product made of an insulating material such as synthetic resin and is formed into a substantially rectangular parallelepiped shape, and has four partition pieces 16 projecting downward from the inner peripheral surface of the earthen wall. ing. The partition piece 16 is formed along the longitudinal direction of the cover 12.

A coil block 3, a magnet piece 4, and an armature block 5 are disposed within a casing 1 formed by a base 11 and a cover 12.

As shown in Fig. 13, the fill block 3 has a substantially U-shaped iron core 31 that is open upward, and a coil 32 is wound around the horizontal pieces, and each leg piece of the iron core 31 is made of an insulating material. It is formed in such a shape that it is covered with a crocodile 33 and the tips of the legs are exposed from a part of the circumferential surface of the crocodile 33. Connected to coil 32! A pair of fill terminals 34 are provided corresponding to each collar 33, and are bent so as to protrude upward from the upper end of the collar 33 and come into contact with the coil terminal coupling piece 26. With the coil block 3 housed in the base 11, the coil terminal 34 and the coil terminal coupling piece 26 are electrically and mechanically coupled by welding, soldering, or the like.

Here, the coil terminal 34 and the coil terminal coupling piece 26 each protrude upwardly from the upper end of the leg of the iron core 31, and since the coil terminal coupling piece 26 is provided protruding within the notch 15, the coil Terminal coupling piece 26 and coil terminal 34
and are exposed from the base 11, making it easy to weld or solder the two together. The magnet piece 4 is interposed between the exposed portions of the legs of the iron core 31 in a loop shape with its magnetic poles in contact with each other.

The magnet piece 4 is plate-shaped, and a recess tti41 having a substantially semicircular cross section running toward the inside of the base 11 is formed in the center of the upper surface. The upper surface of the magnet piece 4 is an inclined surface 42 which is thicker at the center in the longitudinal direction of the base 11 and gradually becomes thinner toward the ends.

Further, both ends of the magnet piece 4 in the longitudinal direction of the base 11 are respectively magnetized with the same polarity, and the central part is magnetized with different magnetic poles. That is, if both ends are north poles, the center part is magnetized to be south pole.

The magnetic poles at both ends are the iron core 3 of the coil block 3.
It is interposed between both legs in such a way that it abuts the inner surface of each leg of the first leg.

The armature block 5 includes an armature 51 made of a magnetic material and formed into a substantially rectangular flat plate shape, and movable contact spring pieces 5 disposed on both sides of the armature 51 in substantially the same plane as the armature 51.
2, and a spring support 53 which is a molded article of an insulating material such as synthetic resin and is integrally molded with an armature 51 and a movable contact spring piece 52. Armature 51
As shown in FIG. 4, a protrusion 54 having a substantially semicircular cross section running in the width direction of the armature 51 is formed on the lower surface of the armature.

The movable contact spring piece 52 is an elongated electrically conductive leaf spring,
A supporting piece 55 having a substantially T-shaped distal end protrudes toward the center in the longitudinal direction is integrally provided. Furthermore, slits 56 are formed at both ends in the longitudinal direction, each opening at the tip, so that the tip of the movable contact spring piece 52 is easily bent.

A notch 57 is formed in the spring support 53 and opens at both ends of the armature 51 in the middle direction. A support piece 55 is provided to protrude from the inner end of this notch 57, and a tip end of the support piece 55 protrudes outward from the spring support body 53 in the middle direction of the armature 51. That is, since the movable contact spring piece 52 is fixed at the center portion in the longitudinal direction by the spring support 53 and the support piece 55 is provided protruding from the spring support 53, the movable contact spring piece 52 is fixed in the longitudinal direction. Spring force is applied to both ends of the support piece 55 and the support piece 55 independently. After this, the pole block 5 fits the protrusion 54 provided on the lower surface of the armature 51 into the groove 41 of the magnet piece 4, and the support piece 55 is placed in the recess 1 provided on the side wall of the base 11.
The armature block 5 is disposed at a fixed position in the base 11 by fitting the armature block 5 into the support piece 55.
It can swing freely around the axis. In this way, since the support piece 55 integrally formed with the movable contact spring piece 52 supports the armature block 5, the movable contact spring piece 52 serves both as a conductive part and a support part. This leads to the reduction and reduction of component parts. Furthermore, since the plate-shaped support piece 55 is configured as a rotating wheel of the armature block 5, the support piece 55 is
As shown in FIG. 5, the spring force caused by the torsion of the armature 51 causes the attractive force acting on the armature 51 to be 1RW1, as shown in FIG. Further, the contact pressure between the fixed contact 23 and the movable contact spring piece 52 can be adjusted by the spring force of the movable contact spring piece 52.

As a result, by adjusting the shape and dimensions of both ends of the movable contact spring piece 52 in the longitudinal direction, contact and overcoming pressure can be adjusted, and by adjusting the shape and dimensions of the support piece 55, the suction force can be adjusted.
Therefore, the contact pressure and suction force can be adjusted separately and independently. Furthermore, since the movable contact spring piece 52 applies independent spring force at both ends in the longitudinal direction, by adjusting the shape and dimensions of both ends of the movable contact spring piece 52, the contact point for both fixed contacts 23 can be adjusted. It is possible to adjust the pressure independently of each other, making it easy to adjust the contact pressure.

Moreover, since the movable contact spring pieces 52 are disposed on both sides of the armature 51 in the width direction on substantially the same plane as the armature 51, the overall thickness in the vertical direction can be reduced.

As described above, the cover 12 is fitted onto the base 11 with the coil block 3, magnet piece 4, and armature block 5 housed in the base 11.

The four partition pieces 16 protruding from the inner peripheral surface of the cover 12 are
As shown in FIG. 2, the base 11 is fitted with the cover 12 and inserted into the gap between the armature 51 and the movable contact spring piece 52, and the armature 51 and the movable contact spring piece 52 are inserted into the gap. By interposing an insulating partition piece 16 between them, a large insulating distance can be maintained between the two.

In the above example, the recessed groove 41 of the magnet piece 4 has a substantially semicircular cross section, but the cross section may also be a substantially square square shape that is open upward. In this case, the protrusion 54 formed on the armature 51 may have a thin blade shape.

With the above configuration, when the coil 32 is energized, one end of the armature 51 in the longitudinal direction is attracted to one leg of the iron core 31 according to the direction of magnetization, and the armature block 5 swings. A closed magnetic path of core 31→armature 51→magnet piece 4→iron core 31 is formed, and one longitudinal end of movable contact spring piece 52 contacts the corresponding fixed contact 23. When the coil 32 is de-energized in this state, the magnetic force of the magnet piece 4 maintains the closed magnetic path as it is, and the armature 51 is connected to the iron core 3.
1 is maintained in contact with one side. Furthermore, if the current direction to the coil 32 is reversed, the armature 51 is attracted to the other leg piece of the iron core 31, and the movable contact spring piece 52
The other end in the longitudinal direction contacts the corresponding fixed contact 23 . Even in this state, the state is maintained after the current supply is stopped, and so-called bistable operation can be performed.

[Effects of the Invention] As described above, in the present invention, the base is formed into a box shape with one side open, so that the strength of the base can be relatively increased, and each terminal piece protruding from the base can be The part embedded in the base is routed within the peripheral wall of the base, and the terminal piece is embedded over almost the entire circumference of the base, so the peripheral wall of the base is reinforced by the terminal piece. This has the advantage that sufficient strength can be obtained even when the thickness of the molded product forming the base is small, such as in a small relay.

Further, since the terminal piece is used as a member for reinforcing the base, there is an advantage that the increased strength of the base does not cause an increase in the number of parts or the number of α or change in appearance.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is a partially omitted plan view of the same with the cover removed, Fig. 3 is a sectional view of the same, and Fig. 4 is used for the same. FIG. 5 is a bottom perspective view showing the armature block, and FIG. 5 is an explanatory diagram of the same operation. 1 is a casing, 3 is a coil block, 4 is a magnet piece, 5
is the armature block, 11 is the base, 12 is the cover, 13
14 is a recess, 15 is a notch, 16 is a partition piece, 2
1 is a contact piece, 22 is a common terminal piece, 23 is a fixed contact, 24
is a fixed terminal board, 25 is a fixed terminal piece, 26 is a coil terminal coupling piece, 27 is a coil terminal piece, 31 is an iron core, 32 is a coil, 33 is a collar, 34 is a coil terminal, 41 is a groove, 42 is an inclined 51 is an armature, 52 is a movable contact spring piece, 53 is a spring support, 54 is a protrusion, 55 is a support piece, 56 is a slit, and 57 is a notch. Agent Patent Attorney Ishi 1) Long 7M2 @ wI3 Figure 41! J Procedural amendment (voluntary) June 25, 1985 1゜Indication of the case 1985 Patent H No. 60095 2, Title of the invention 1'A Equipment base 3, Person making the amendment Relationship to the case Patent Applicant Address 1048 Kadoma, Kadoma City, Osaka Name (58
3) Matsushita Electric Works Co., Ltd. Representative Sadao Fujii 4, agent postal code 530 5, amend the date statement of the amendment order as shown in the attached correction statement. . Description 1, name of the invention, base of electrical equipment 2, scope of claim (1), one side consisting of 1 is open 3
Rena box cancer sadness ≦-su and in the base! ° and its − are
1. The base is attached to a plurality of terminal pieces formed integrally with the base at the same time. A base for an electrical device, characterized in that a portion of each terminal piece buried in the base extends into the peripheral wall of the base. 3. Detailed Description of the Invention [Technical Field 1] The present invention relates to a base for electrical equipment equipped with terminals. BACKGROUND TECHNOLOGY 1 In general, electrical equipment that has mechanical operating parts such as relays is inside a-! There is a problem that if the strength of the base of an electric device is low, the characteristics of the mechanical moving parts will change and the reliability will decrease. [Object of the Invention] The present invention has been made in view of the above-mentioned points, and its main purpose is to improve the operation of built-in parts by increasing the strength of the base formed by a molded product. It is an object of the present invention to provide a base for an electrical device that does not reduce reliability and also prevents an increase in the number of parts by using a terminal piece as a reinforcing member of the base. [Disclosure of the Invention] (Examples) Examples of the present invention will be described below based on the drawings. In the following description, a polarized relay using the base of the present invention will be exemplified. As shown in FIG. 1, the casing 1 includes a box-shaped base 11 and a box-shaped cover 12 that is fitted over the base 11. As shown in FIG. The base 11 is a molded product made of an insulating material such as synthetic resin, and a recess 13 is formed in the center of the longitudinal direction of the base 11 on both side walls.
are formed respectively. Each recess 13 is provided with a contact piece 21, and the contact piece 21 is integrally formed of a conductive material with a common terminal piece 22 that is exposed on the outside of the side wall in the width direction of the base 11 and projects downward. . Lips 14 are formed at the four inner corners of the base 11, respectively. The lip 14 is provided with a fixed contact plate 24 having fixed contacts 23, and the fixed contact plate 24 is made of a conductive material integrally with a fixed terminal piece 25 that is exposed on the outside of the side wall in the width direction of the base 11 and protrudes downward. It is formed. Notches g1 are provided on both longitudinal walls of the base 11.
5 is formed, and a pair of coil terminal coupling pieces 26 are provided protruding from the bottom surface of each notch 15, respectively. The coil terminal coupling piece 26 is integrally formed of a conductive material with a coil terminal piece 27 that is exposed to the outside of both walls in the middle direction of the base 11 and protrudes downward. In this way, the contact piece 21 and the common terminal piece 22, the fixed contact plate 24 and the fixed terminal piece 25, and the coil terminal coupling piece 26 and the coil terminal piece 27 are each integrally formed of a conductive material, and the base 11 and each conductive The material is integrated by insert molding. The length of the conductive material is extended within the circumferential wall of the base 11 in a direction connecting the ridges of adjacent bases 11, so that the conductive material is disposed within the circumferential wall of the base 11 over substantially the entire length thereof. Therefore, the side walls of the base 11 are reinforced by the electrically conductive material, and the strength of the base 11 is increased due to the box shape of the base 11. Cover 12 is synthetic! It is a molded product made of an insulating material such as M resin, and has four partition pieces 16 protruding from the inner bottom surface. The partition piece 16 is formed along the longitudinal direction of the cover 12. A fill block 3, a permanent magnet 4, and an armature block 5 are disposed within a casing 1 formed by a base Xll and a cover 12. Coil block 3 is the third [! As shown in FIG. 1, a coil 32 is wound around an upwardly open iron core 31 having a substantially U-shape, and both magnetic poles of the iron core 31 are each covered with a flange 33 made of an insulating material. It is formed in such a shape that the tips of both magnetic poles are exposed from the curved surface 33. A pair of coil terminals 34 connected to the coil 32 are provided corresponding to each collar 33, and are bent so as to protrude above the collar 33 and come into contact with the coil terminal coupling piece 26. With the coil block 3 housed in the base 11, the coil terminal 34 and the coil terminal coupling piece 26 are electrically and mechanically coupled by welding, soldering, or the like. Here, the coil terminal coupling pieces 26 of the coil terminal 34 each protrude upwardly from both magnetic poles of the iron core 31, and since the coil terminal coupling pieces 26 are provided protruding within the notch 15, the coil terminals The coupling piece 26 and the coil terminal 34 are exposed from the base 11, making it easy to weld or solder the two together. The permanent magnet 4 is interposed between both magnetic poles of the iron core 31 so that the magnetic poles are in contact with each other. The permanent magnet 4 has a plate shape, and a groove 41 with a substantially semicircular cross section running in the width direction of the base 11 is formed in the center of the surface. The surface of the permanent magnet 4 is an inclined surface 42 which is thickest at the middle part in the longitudinal direction of the base 11 and is inclined so that the thickness gradually decreases toward the i part. Further, both ends of the permanent magnet 4 in the longitudinal direction of the base 11 are magnetized with the same polarity, and the middle part is magnetized with different magnetic poles. That is, if both ends are north poles, the middle part is magnetized to be south pole. However, the magnetized position of the intermediate portion may be shifted toward one end, and in that case, monostable operation can be achieved. The magnetic poles at both ends of the permanent magnet 4 are connected to the iron core 3 of the coil block 3.
It is interposed between the two legs in such a way that it abuts the inner surface of each magnetic pole of the first pair. Here, a required gap may be interposed between the magnetic pole of the iron core 31 and the magnetic poles of both m portions of the permanent magnet 4, or a difference may be provided between the two gaps in order to obtain the required magnetic characteristics. . The armature block 5 includes a magnetic armature 51 formed into a flat plate, movable contact spring pieces 52 disposed on both sides of the armature 51, and integrally formed with the armature 51 and the movable contact spring pieces 52. The spring support body 53 is a molded article of an insulating material such as a synthetic resin. As shown in FIG. 4, on the back surface of the armature 51, there is formed a protrusion 54 having a substantially semicircular cross section and running in the width direction of the armature 51. The movable contact spring piece 52 is an electrically conductive plate spring, and a supporting piece 55 whose tip end is formed in a substantially T-shape is integrally provided at the center portion in the longitudinal direction so as to protrude in the width direction. Furthermore, slits 56 are formed at both ends in the longitudinal direction, each opening at the tip, so that the tip of the movable contact spring piece 52 is easily bent. A notch 57 is formed in the spring support 53 and opens at both ends of the armature 51 in the middle direction. A support piece 55 is provided protruding from the inner end of this notch 57, and the support piece 55
The tip of the spring support 53 is located in the middle direction of the armature 51.
It protrudes outward. That is, since the movable contact spring piece 52 is fixed at the center portion in the longitudinal direction by the spring support 53 and the support piece 55 is provided protruding from the spring support 53, the movable contact spring piece 52 is fixed in the longitudinal direction. Spring force is applied to both ends of the support piece 55 and the support piece 55 independently. In this armature block 5, the protrusion 54 provided on the back surface of the armature 51 is accommodated in the groove 41 of the water magnet 84, and the support piece 55 is fitted into the recess 13 provided on the side wall of the base 11. base 11 by
The armature block 5 is arranged at a fixed position within the armature, and the armature block 5 can swing freely around the support piece 55. In this way, since the support piece 55 integrally formed with the movable contact spring piece 52 supports the armature block 5, the movable contact spring piece 52 serves both as a conductive part and a support part. This leads to a reduction in the number of component parts. In addition, the flat support piece 55'! f! Due to the configuration in which the uniatomic block 5 is centered on the swing, the armature block 5 can swing freely by utilizing the twisting of the support piece 55, so there are parts where friction occurs between the armature block 5 and other members. There is no or almost no friction, and the starting force needed to overcome the static friction force at the time of initial movement of the armature block 5 is reduced, making it possible to obtain a highly sensitive polar electromagnet. On the other hand, since the spring force due to the twist of the support piece 55 acts on the armature block 5, as shown in FIG.
The suction force acting on the armature 51 can be adjusted by the spring force caused by the torsion of the armature, and the contact pressure between the fixed contact 23 and the movable contact spring piece 52 can be adjusted by the spring force of the movable contact spring piece 52. It is. As a result, the contact pressure can be adjusted by adjusting the shape and dimensions of both longitudinal ends of the movable contact spring piece 52, and the suction force can be adjusted to 11 nodes by adjusting the shape and dimensions of the support piece 55. and the suction force can be adjusted separately and independently. Furthermore, since the movable contact spring piece 52 has independent spring forces applied to both ends in the longitudinal direction,
By igniting the shape and dimensions of both ends of the movable contact spring piece 52, it is possible to independently adjust the contact pressure for both fixed contacts 23, making it easy to adjust the contact pressure. Further, since the movable contact spring pieces 52 are disposed on both sides of the armature 51 in the middle direction and on substantially the same plane as the armature 51, the overall thickness in the vertical direction can be reduced. Although the movable contact spring pieces 52 are provided on both sides of the armature 51, they may be provided on only one of them. As described above, the cover 12 is fitted onto the base 11 with the coil block 3, permanent magnet 4, and armature block 5 housed in the base 11. As shown in FIG. 2, the four partition pieces 16 protruding from the inner bottom surface of the cover 12 are arranged between the armature 51 and the movable contact spring piece 52 when the cover 12 is fitted onto the base 11. The insulating partition piece 16 is inserted between the armature 51 and the movable contact spring piece 52 to provide a large insulation distance between them. In addition, in the above example, l! of the permanent magnet 4! Although the example in which the cross section of l@41 is approximately semicircular has been shown, the cross section may be approximately V-shaped with an upwardly open shape. In this case, the armature 5
The protrusion 54 formed in 1 may be formed into a thin blade shape. Further, in addition to the above-mentioned shape, any shape may be used as long as the permanent magnet 4 and the armature 51 are fitted into each other so that the armature 51 is guided in a swinging manner. Furthermore, the permanent magnet 4 and the armature 51 may be fitted together in constant contact with each other, or may be fitted only when external vibrations or shocks are applied. With the above configuration, when the coil 32 is energized, one end of the armature 51 in the longitudinal direction is attracted to one magnetic pole of the iron core 31 according to the direction of magnetization, the armature block 5 swings, and the iron core 31 -> armature 51 -> hydraulic magnet 4 -> iron core 31 - a closed magnetic path is formed, and one end of the movable contact spring piece 52 in the longitudinal direction comes into contact with the corresponding fixed contact 23. When the coil 32 is de-energized in this state, the magnetic force of the permanent magnet 4 maintains the closed magnetic path as it is, and the iIi pole 51
is maintained in contact with one side of the iron core 31. Furthermore, if the current direction to the coil 32 is reversed, the armature 51 is attracted to the other magnetic pole of the iron core 31, and the other longitudinal end of the movable contact spring piece 52 connects to the corresponding fixed contact 2.
Contact 3. Even in this state, after stopping the power supply,
This state is maintained as it is, and so-called bistable operation can be performed. [Effects of the Invention J As described above, the present invention has a box-shaped base made of a molded product of synthetic resin material with one side open, and the electrical equipment main body inside the base and one end thereof are electrically connected and the intermediate In a base in which the external terminal, which is the other end of a plurality of terminal pieces that are integrally molded with the base, protrudes from the peripheral wall of the base, the part buried within the base of each electronic piece is embedded within the peripheral wall of the base. Since the terminal piece extends in the direction connecting adjacent edges, the peripheral wall of the base is reinforced by the terminal piece, and even when the wall thickness of the molded product forming the base is small, such as in a small relay. It also has the advantage that sufficient strength can be obtained. Further, since the terminal piece is used as a member for reinforcing the base, there is an advantage that the number of parts does not increase or the appearance changes due to the increased strength of the base. 4. Brief description of the drawings FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a partially omitted plan view of the same with the cover removed, and FIG. 3 is a sectional view of the same. FIG. 4 is a bottom perspective view showing the armature block used in the above, and FIG. 5 is an explanatory diagram of the operation of the same. 11 is a base, 22 is a common terminal piece, 24 is a fixed terminal board,
25 is a fixed terminal piece, 26 is a coil terminal coupling piece, and 27 is a coil terminal piece.

Claims (1)

[Claims] (1) It has a box-shaped base made of a molded product such as a synthetic resin with one side open and in which various parts are placed.
In a casing in which multiple terminal pieces are electrically connected to parts housed in the base and molded simultaneously with the base and protrude from the outer surface of the peripheral wall of the base, each terminal piece is embedded in the base. part is routed within the peripheral wall of the base,
A casing having a terminal, characterized in that a terminal piece is embedded over substantially the entire circumference of a peripheral wall of a base.