JPH0688112U - Distribution board lid engagement structure - Google Patents

Abstract

(57) [Summary] [Purpose] To withstand long-term use and repeated opening and closing, and to stabilize the opening force of the lid regardless of the size of the distribution box body. [Structure] A coil spring 5 for restoring the pressing member 4 is provided on the back side of a resin-made pressing member 4 having a lid engaging claw 3 at an appropriate position of any of the box body 1 and the lid body 2. An insertion protrusion 6 for insertion is formed, and a spring piece 7 for urging the lid 2 in the opening direction is integrally formed with the pressing member 4 in the vicinity of the lid engaging claw 3, and the coil spring 5 is provided on the back surface of the pressing member 4. With the lid 2 attached to the box body 1, the lid 2 is biased in the opening direction by the restoring force of the spring piece 7, and the coil spring 5 is attached.
The pressing member 4 is biased in the engaging direction of the lid body 2 by the restoring force of the above, and the lid body 2 is pushed up by the upper surface inclined portion 3a of the lid body engaging claw 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lid engaging structure for a distribution board that houses a main circuit breaker and a plurality of branch circuit breakers.

[0002]

[Prior art]

 Conventionally, the lid engaging structure of the distribution board has a structure in which a minus driver 32 is inserted from the outside of the distribution board 31 to release the inner engagement as shown in FIG. 5, and the lid 31a is released from the box 31b. Alternatively, as shown in FIGS. 6 and 7, the handles 34 and 35 of the distribution board 33 may be lifted to bend the lid 33a and release the engagement with the box 33b.

However, the one using the minus driver 32 or the like has a drawback that the insertion hole 35 is crushed and the lid 31a cannot be opened. On the other hand, the one that bends the lid 33a has a drawback that it is very difficult to open the lid 33a because the lid 33a must be lifted while strongly pressing the box 33b.

Therefore, in order to solve these drawbacks, for example, the one disclosed in Japanese Utility Model Laid-Open No. 61-80505 is known.

In the device disclosed in this publication, an engaging claw 37 that engages with the inside of the lid 36 is provided at the tip as shown in FIGS. 8 and 9, and the engagement inside the lid 36 is released. The operation protrusion 38 is provided so as to project outward from the central portion, and the engaging lock piece 40 that is flexibly arranged inward along the inner surface of the opening edge of the box body 39 and the lid body 36 are pushed up and opened. A U-shaped elastic plate 41 is integrally formed. When the lid 36 is opened, the operating projection 38 is pressed to release the engaging claw 37 from the lid 36, and The lid 36 is opened by the restoring force of the elastic plate 41.

[0006]

[Problems to be solved by the device]

 However, since the U-shaped elastic plate 41 of FIG. 9 is made of synthetic resin, if the lid 36 is kept closed for a long period of time, or if the lid 36 is repeatedly opened and closed. , The U-shaped elastic plate 41 becomes large in settling force and the restoring force decreases, and the U-shaped elastic plate 41 has the same urging force regardless of the size of the box body 39. When the body of the box body 39 becomes large, the restoring force of the U-shaped elastic plate 41 is weak and the lid 36 may not be opened, which has a drawback that the operability is very poor.

Therefore, the present invention provides a lid-engaging structure for a distribution board that withstands long-term use and repeated opening and closing, and has the same opening force of the lid regardless of the size of the distribution board body. Especially.

[0008]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a coil spring for restoring the pressing member on the back side of the pressing member having a lid engaging claw at an appropriate position of any of the opening of the box body and the lid. An insertion protrusion is formed for insertion, and a spring piece that urges the lid in the opening direction is formed integrally with the pressing member in the vicinity of the lid engaging claw, and the coil spring is attached to the back surface of the pressing member, and the lid is attached to the box. When the cover is fitted, the restoring force of the spring piece urges the lid body in the opening direction, and the restoring force of the coil spring urges the pressing member in the engagement direction of the lid body. The lid is pushed up by the inclined surface.

[0009]

[Action]

 The cover engaging structure of the distribution board of the present invention is such that when the pressing member is pressed from the outside with the cover fitted in the box, the cover engaging claw is disengaged and the spring is engaged. The lid's restoring force pushes the lid slightly upward in the opening direction, and the restoring force of the coil spring attached to the back side of the pressing member pushes the lid's edge along the upper sloped portion of the lid engaging claw. , The lid is opened.

[0010]

【Example】

 1 to 4 are explanatory views of an embodiment of a lid engaging structure for a distribution board according to the present invention, and the present invention will be described below with reference to the accompanying drawings.

A lid engaging structure for a distribution board according to the present invention is a resin pressing member having a lid engaging claw 3 at an appropriate position of any opening of the box 1 and the lid 2. An insertion protrusion 6 for inserting a coil spring 5 for restoring the pressing member 4 is formed on the back side of the member 4, and a spring piece 7 for urging the lid body 2 in the opening direction is pressed near the lid body engaging claw 3. The coil spring 5 is integrally formed on the member 4, the coil spring 5 is attached to the back surface of the pressing member 4, and the lid 2 is fitted to the box 1 with the restoring force of the spring piece 7 biasing the lid 2 in the opening direction. At the same time, the restoring force of the coil spring 5 urges the pressing member 4 in the engaging direction of the lid body 2, and the upper surface inclined portion 3a of the lid body engaging claw 3 pushes up the lid body 2.

The pressing member 4 configured as shown in FIGS. 1 and 2 is pushed to the bearing portion 8a of the pressing member mounting portion 8 formed on the front surface of the opening portion of the box body 1 as shown in FIG. The shaft 4a is rotatably attached, and the coil spring 5 is attached by being compressed and housed in the coil spring housing space 8b.

When the lid engaging claw 3 of the pressing member 4 is engaged with the lid 2 as shown in FIG. 4 (a), the pressing member 4 is moved by the restoring force of the coil spring 5 to the box 1. The lid 2 is urged outward, that is, in the engaging direction, so that the lid 2 is not disengaged. Further, since the spring piece 7 is pushed downward by the rib 2a of the lid body 2, the spring piece 7 is in a state of urging the lid body 2 in the opening direction.

Then, as shown in FIG. 4B, when the pressing portion 4b of the pressing member 4 is pressed against the restoring force of the coil spring 5, the engagement with the lid body 2 is released, and the lid body 2 is released. The rib 2a is pushed upward slightly by the restoring force of the spring piece 7, and the edge of the lid 2 is placed on the edge of the upper surface inclined portion 3a of the lid engaging claw 3.

Further, when the pressing portion 4b of the pressing member 4 is released, the pressing member 4 is returned to the origin by the restoring force of the coil spring 5 as shown in FIG. The lid 2 is opened by being pushed up along the upper surface inclined portion 3a of the engaging claw 3.

Therefore, as shown in FIG. 4, the lid engaging structure of the distribution board according to the present invention has the upper surface inclined portion 3a of the lid engaging claw 3 due to the restoring force of the coil spring 5 attached to the pressing member 4. Since the lid body 2 is pushed up by, the lid body 2 can obtain a stable opening force only by pressing the pressing member 4 regardless of the size of the distribution board body.

Further, since the spring piece 7 is not for opening the lid body 2, it does not require a particularly strong restoring force, and the end edge of the lid body 2 engaged with the lid body engaging claw 3 is not required. Since it is sufficient that the portion is pushed upward (1-2 mm) from the tip of the upper surface inclined portion 3a of the claw 3, the restoring force does not decrease even after long-term use, and a stable opening force is provided. Obtainable. Further, in order to maintain the restoring force of the spring piece 7 for a long period of time, it is possible to form a protrusion on the end of the spring piece 7.

In the above embodiment, the spring piece 7 biases the lid body 2 in the opening direction by the rib 2a of the lid body 2, but this is an example, and the lid body 2 is biased in the opening direction. What is done is not limited to the rib 2a, and for example, a spring member that biases the lid body 2 in the opening direction from the back side of the lid body 2 can be provided. Further, the configurations and shapes of other components are not limited to those in the above embodiment, and can be appropriately changed without departing from the object of the present invention.

[0019]

[Effect of device]

 As described above, the lid engaging structure of the distribution board according to the present invention is provided on the back side of the pressing member having the lid engaging claw at an appropriate position of any opening of the box body and the lid. , The insertion protrusion that inserts the coil spring that restores the pressing member is formed, and a spring piece that urges the lid in the opening direction is formed integrally with the pressing member near the lid engaging claw, and the coil spring is pressed. With the lid attached to the back side of the member, the lid is biased in the opening direction by the restoring force of the spring piece while the lid is fitted in the box, and the pressing member is engaged by the restoring force of the coil spring. Since the lid is pushed up in the combined direction and is pushed up by the inclined surface of the lid engagement claw, it withstands long-term use and repeated opening and closing, etc., regardless of the size of the distribution board body. It has an excellent effect that the opening force of is stable.

[Brief description of drawings]

FIG. 1 is an explanatory view of a pressing member of a lid engaging structure of a distribution board according to the present invention.

FIG. 2 is a top view of a pressing member in FIG.

FIG. 3 is an explanatory view of mounting the pressing member according to the present invention.

FIG. 4 is an explanatory view of an embodiment of a lid engaging structure for a distribution board according to the present invention.

FIG. 5 is an explanatory view of a conventional lid engaging structure of a distribution board.

FIG. 6 is an explanatory view of a conventional lid engaging structure for a distribution board.

FIG. 7 is an explanatory diagram of a conventional lid engaging structure for a distribution board.

FIG. 8 is an explanatory diagram of a conventional lid engaging structure for a distribution board.

FIG. 9 is an explanatory diagram of a conventional lid engaging structure for a distribution board.

[Explanation of symbols]

1 ... Box body, 2 ... Lid body, 2a ... Rib, 3 ...
-Lid body engaging claws 3a ... Inclined upper surface portion, 4 ... Pressing member, 4a ... Shaft, 4b ... Pressing portion, 5 ... Coil spring, 6 ... Insertion projection portion, 7 ... Spring pieces, 8 ...
Pressing member mounting portion, 8a ... Bearing portion, 8b ... Coil spring portion accommodating space.

Claims (1)

[Scope of utility model registration request] 1. A cover of a distribution board in which a main circuit breaker and a plurality of branch circuit breakers are housed in a distribution board composed of a box and a cover, and the cover is fitted in the box so as to be openable and closable. In the body engaging structure, an insertion protrusion that inserts a coil spring that restores the pressing member on the back side of the pressing member that has a lid engaging claw at an appropriate position of any of the opening of the box body and the lid. To form
A spring piece for urging the lid body in the opening direction is integrally formed with the pressing member in the vicinity of the lid engaging claw, the coil spring is attached to the back surface of the pressing member, and the lid body is fitted to the box body. In the attached state, the restoring force of the spring piece urges the lid body in the opening direction, and the restoring force of the coil spring urges the pressing member in the engaging direction of the lid body. A lid engaging structure for a distribution board, wherein the lid is pushed up by an inclined portion of an upper surface of an engaging claw.