JP2012059439A - Terminal box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal box having a cover easily removable from a main body.SOLUTION: A box is equipped with a recessed main body opening at an upper part, and a cover for closing the upper part of the main body. The cover is provided with a hooking piece at one end, and a lock piece at the other end. The main body is provided with a hooking portion which engages with the hooking piece of the cover to rotatably hook the cover, and a locking portion which locks the lock piece of the cover. The lock piece of the cover extends along an inner wall of the main body, can displace toward the inside of the main body, and has a lock claw projecting out toward the outside of the main body at its tip end. The locking portion of the main body projects out from the inner wall of the main body, has a tilting surface tilting toward the inside of the main body from an upper portion to a bottom portion of the main body, guides the lock claw of the lock piece by using the tilting surface of the locking portion, and carries out locking and releasing of the locking between the locking portion and the lock piece by using the projection of the locking portion and the lock claw.

Description

  The present invention relates to a terminal box used for electrically connecting a solar cell module or the like to another device.

  In recent years, attention has been focused on environmental protection and clean energy, and solar cells are actively developed. In order to increase the output power, the solar cell is used as a solar cell module in which a plurality of solar cells are electrically connected. In addition, a plurality of solar cell modules are electrically connected and the generated power is often used. Therefore, a terminal box for protecting the solar cell module is necessary.

  Patent document 1 is disclosing the terminal box used for a solar cell module. This terminal box is composed of a connection box and a lid, and the connection method between the connection box and the lid has no joint, and can be manufactured at a small cost compared with the hinge device.

JP 2009-130373 A

  However, in the invention described in Patent Document 1, the lid is removed from the bottom portion by manually extending the attachment tongue piece outwardly against the elasticity of the material and then lifting the lid. For this reason, the worker sometimes feels troublesome when removing the lid. It is also conceivable that the operator's finger is damaged by repeatedly performing the operation of removing the lid.

  In view of the above-described conventional situation, an object of the present invention is to provide a terminal box in which a lid can be easily attached to a main body and the lid can be easily detached from the main body.

  In order to solve the above-described problems, the present invention provides a box including a concave main body having an open upper portion and a lid that closes the upper portion of the main body. A lock piece is provided at each end. The main body has a locking portion that engages with the locking piece of the lid and locks the lid in a rotatable manner, and locks the locking piece of the lid. A locking portion is provided, the locking piece of the lid extends along the inner wall of the main body, is displaceable toward the inner side of the main body, and projects toward the outer side of the main body at the tip thereof. The lock portion of the main body protrudes from the inner wall of the main body, and has an inclined surface inclined toward the inner side of the main body from the top to the bottom of the main body, Using the inclined surface of the lock part, And inner and utilizes the projection of the locking pawl and the projection of the locking portion, to provide a terminal box, characterized in that for locking and unlocking between the lock piece and the lock portion.

  Further, the present invention provides a terminal box characterized in that the protruding tip of the lock part and the protruding tip of the lock claw form an acute angle.

  Furthermore, the present invention is characterized in that the main body includes another inclined surface that is adjacent to the side of the inclined surface and is inclined so as to approach the locking portion as it goes from the top to the bottom of the main body. Provide a terminal box.

  In addition, the present invention provides a terminal box, wherein the main body includes a wall at a position spaced from the lock portion so that the locking piece can be inserted.

  By using the configuration of the present invention, the operator can easily attach the lid to the main body, and can easily remove the lid from the main body when necessary.

It is the schematic which shows the terminal box 10 which is one Embodiment which concerns on this invention. 4 is a plan view of a main body 40 that constitutes the terminal box 10. FIG. It is sectional drawing of the cross section shown by AA of the top view of FIG. 3 is a side view of a lid 12. FIG. 3 is a front view of a lid 12. FIG. It is sectional drawing of the cross section shown by BB of the top view of FIG. FIG. 3 is a plan view of the terminal box 10 with a lid 12 attached to a main body 40. It is sectional drawing shown by CC of the top view of FIG. It is sectional drawing shown by DD of the top view of FIG. FIG. 9 shows a state in which the rod 48 is inserted between the lock piece 24 and the lock portion 44. It is an enlarged view of the lock piece 24 and the lock part 44 of FIG. 10A. FIG. 6 is an enlarged view of the lock piece 24 and the lock portion 44 showing the force received by the lock piece 24 and the lock portion 44. It is an enlarged view of the lock claw 26 and the lock part 44 in another one Embodiment of this invention in which the front-end | tip which the lock | rock part 44 protruded, and the protrusion front-end | tip of the lock | rock claw 26 have formed an acute angle.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view of a terminal box 10 according to an embodiment of the present invention. The terminal box 10 is constituted by a concave main body 40 whose upper part is opened and a lid 12 that closes the upper part of the main body 40. As shown in FIG. 1, the lid 12 is provided with a locking piece 16 at one end and a locking piece 24 at the other end. The locking piece 16 is engaged with the locking portion 42 of the main body 40, the lock piece 24 is engaged with the locking portion 44 of the main body 40, and the lid 12 is fitted to the upper portion of the main body 40. Inside the main body 40, a terminal 41 is provided for electrically connecting a terminal of a plug fitted to the main body 40 to a device such as a solar battery.

  FIG. 2 is a plan view of the main body 40. 3 is a cross-sectional view of the cross section indicated by AA in the plan view of FIG. FIG. 4 is a side view of the lid 12. As shown in FIG. 3, the locking portion 42 of the main body 40 protrudes in the inner direction 45 of the main body. As shown in FIG. 4, the locking piece 16 protrudes from the flat plate 14 of the lid 12 and has a locking claw 22 that extends in the outer direction 21 of the lid. In this embodiment, when the locking piece 16 enters the lower side of the locking portion 42, the lid 12 is engaged with the main body 40 so as to be rotatable about the side 18 including the locking piece 16 as a rotation axis. However, another configuration may be used as long as the main body 40 and the lid 12 are rotatably engaged. In addition, the wall 43 may be provided in the inner direction 45 of the locking portion 42 with an interval so that the locking piece 16 of the lid 12 can be inserted. In this embodiment, the number of the locking pieces 16 and the locking portions 42 is two each, but may be one or three or more.

  FIG. 5 is a front view of the lid 12. 6 is a cross-sectional view of the cross section indicated by BB in the plan view of FIG. As shown in FIG. 5, the lid 12 is provided with a lock piece 24. The lock piece 24 is formed so as to extend along the inner wall of the main body 40 when the lid 12 is attached to the main body 40, and can be displaced in the inner direction 25 of the main body 40 by the elasticity of the material. . The lock piece 24 has a lock claw 26 that protrudes outward. As shown in FIG. 6, the main body 40 is provided with a lock portion 44 that locks the lock piece 24 of the lid 12. The lock portion 44 has a first inclined surface 46 that protrudes from the inner wall of the main body and is inclined toward the inner side direction 25 of the main body from the top to the bottom of the main body. Further, as shown in FIG. 3, the main body 40 is provided with a second inclined surface 47 that is adjacent to the side of the inclined surface 46 and is inclined so as to approach the locking portion 42 from the top to the bottom. May be.

  FIG. 7 is a plan view of the state in which the lid 12 is fitted to the main body 40. 8 is a cross-sectional view indicated by CC in the plan view of FIG. 9 is a cross-sectional view of the cross section indicated by DD in the plan view of FIG. When the lid 12 is attached to the main body portion 14, the locking claw 22 is arranged on the lower side of the locking portion 42 from obliquely above in the inner direction 45 shown in FIG. 3, and the side 18 including the locking piece 16 is rotated. The lid 12 is rotated to the main body 40 side as an axis. When the lid 12 is rotated to the main body 40 side, the lock claw 26 comes into contact with the inclined surface 46, but when the lid 12 is pressed toward the main body 40 side, the lock claw 26 is guided to the inclined surface 46. The lid 12 can be moved toward the main body while being displaced in the inner direction 25. Finally, as shown in FIG. 8, the locking piece 16 moves to the lower side of the locking portion 42 and engages with the locking portion 42, and the lock claw 26 is moved as shown in FIG. The lock claw 26 is locked by the lock part 44.

  Further, when the second inclined surface 47 is provided adjacent to the inclined surface 46, for example, when the lid 12 is attached to the main body 40, for example, the locking claw 22 is not properly fitted to the locking portion 42. Even when the lid 12 starts to rotate in the state (that is, in the state where the locking piece 16 is positioned from the wall 43 in FIGS. 3 and 8), the lock claw 28 is guided along the inclined surface 47. Therefore, the locking claw 22 can be moved below the locking portion 42. Further, since the lock claw 26 is guided toward the lock portion 44 by the inclined surface 47, the lid 12 can be attached to the main body 40 at an accurate position.

  When the wall 43 is provided, the locking claw 22 can be easily arranged below the locking portion 42 by positioning the locking piece 16 between the locking portion 42 and the wall 43. Can do. That is, by positioning the locking piece 16 between the locking portion 42 and the wall 43, the lid 12 can be easily aligned with the main body 40.

Next, the case where the lid 12 is removed from the main body 40 will be described.
The lid 12 can be removed from the main body 40 by using a bar 48 having a flat surface such as a flathead screwdriver. FIG. 10A shows a state in which a rod 48 is inserted into the gap between the lock piece 24 and the lock portion 44. FIG. 10B is an enlarged view of an engagement portion between the lock piece 24 and the lock portion 44 of FIG. 10A. First, the rod 48 is inserted between the inclined surface 46 and the lock piece 24. When the rod 48 is pushed in the body bottom side direction 51 while being inclined toward the outside of the main body 40 so as not to come out of the gap between the lock piece 24 and the lock portion 44, the rod 48 is guided by the inclined surface 46, and the main body 40. Move in the inner direction 25. By receiving a force from the rod 48, the lock piece 24 is displaced in the inner direction 25 of the main body 40, and the lock claw 26 is detached from the lock portion 44. For example, when the lid 12 is slightly moved upward by applying an upward frictional force to the lock piece 24 using the rod 48, the tip 28 of the lock claw 26 comes into contact with the inclined surface 46 and locks. The claw 26 can be prevented from being locked again by the lock portion 44.

  FIG. 11 is an enlarged view of the lock piece 24 and the lock portion 44 showing the force received by the lock piece 24 and the lock portion 44. The lid 12 is moved upward, and the lower end 26 a of the lock claw 26 is in contact with the inclined surface 46. At this time, the lock claw 26 applies a force to the inclined surface 46 by the elastic force 52 of the lock claw 26, but the lock claw 26 receives a force 54 due to the reaction of the force. Since the force 54 due to the reaction has a component force 56 upward, the lock claw 26 is guided to the inclined surface 46 by the component force 56 and moves upward. Due to the upward movement of the lock claw 26, the lid 12 rotates upward with the side 18 including the locking piece 16 as the rotation axis, and the lock piece 24 is positioned above the lock portion 44. At this time, since the locking portion 42 and the locking piece 16 are fitted to each other, only the lock piece 24 side of the flat plate 14 can be made to float from the main body 40. Furthermore, the lid 12 can be removed from the main body 40 by removing the locking claw 22 from the locking portion 42.

  FIG. 12 shows another embodiment of the present invention in which the protruding tip of the lock portion 44 and the protruding tip of the lock claw 26 form an acute angle. In this embodiment, after removing the lock claw 26 from the lock portion 44 by the rod 48, the slant surface 46 of the lock portion 44 is brought into contact with the inclined portion 50 of the lock claw 26 by moving it slightly upward. The lock claw 26 is guided upward by the inclined surface 46. That is, when the lock claw 26 is removed from the lock portion 44 and moved slightly upward, the lid 12 receives the force upward by the component force 56 and rotates upward with the side 18 as the rotation axis. 40 can be removed.

DESCRIPTION OF SYMBOLS 10 Terminal box 12 Lid 14 Flat plate 16 Locking piece 18 Side 21 including the locking piece The outer side direction 22 of the lid 24 The locking claw 24 The locking piece 25 The inner direction 26 of the main body 26 The locking claw 28 Portion 43 Wall 44 Locking portion 45 Inner direction 46 of main body First inclined surface 47 Second inclined surface 48 Bar 50 Inclined portion 51 Bottom direction of main body 52 Elastic force 54 of locking claw Force 56 due to reaction 56 Distribution of force due to reaction Power

Claims (4)

In a terminal box comprising: a concave main body with an open upper part; and a lid that closes the upper part of the main body.
The lid is provided with a locking piece at one end and a locking piece at the other end,
The main body is provided with a locking portion that engages with the locking piece of the lid and locks the lid in a rotatable manner, and a lock portion that locks the locking piece of the lid,
The lock piece of the lid extends along the inner wall of the main body, is displaceable toward the inner side of the main body, and has a lock claw protruding toward the outer side of the main body at the tip thereof.
The lock portion of the main body protrudes from the inner wall of the main body, and has an inclined surface inclined toward the inner side of the main body from the top to the bottom of the main body.
The lock claw of the lock piece is guided using the inclined surface of the lock part, and the lock is locked between the lock part and the lock piece using the protrusion of the lock part and the protrusion of the lock claw. And unlock,
Terminal box characterized by that.   The terminal box according to claim 1, wherein the protruding tip of the lock part and the protruding tip of the lock claw form an acute angle.   The said main body is equipped with another inclined surface which adjoins the side of the said inclined surface, and was inclined so that it might approach the said latching | locking part as it goes to the bottom part from the upper part of the said main body. Terminal box as described in.   4. The terminal box according to claim 1, wherein the main body includes a wall at a position spaced apart from the lock portion so that the locking piece can be inserted. 5.

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