JPS6130311Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is ideal for application to, for example, opening/closing lid devices that close openings provided in the cabinets of various electronic devices. This invention relates to an opening/closing lid device that uses a nearly square-shaped opening/closing lid, and the opening/closing lid is installed in a recess provided in a cabinet to close an opening provided inside the recess. .

Recently, most electronic devices have cabinets and opening/closing lids made of synthetic resin in order to reduce weight. However, on the other hand, in most cases, cabinets and opening/closing lids molded from synthetic resin are subject to variations and deformations due to errors in molding precision and differences in heating temperature. The current situation is that this variation, deformation, etc. causes wobbling between the opening/closing lid and the cabinet. In particular, the larger the opening/closing lid is, the more the above-mentioned looseness tends to appear, and it has become a serious problem.

A known example is Utility Model Publication No. 43-23025. This known example includes an embedded electric appliance that has an engaging part that extends slightly above the surface of a main body, and a hanging part or protrusion that is placed over the surface of the electric appliance and that engages with the engaging part. and a lid made of an elastic material, and a hanging part or a protruding part of the lid is engaged with the engaging part by utilizing the elastic deformation of the lid.

However, in order to implement this known example,
As described in the publication, a through hole is provided in the center of the lid, and the engaging part provided in the center of the electric appliance is inserted through the through hole of the lid and protrudes outward from the lid. Otherwise, the hanging portion or protrusion of the lid cannot be engaged with the engaging portion. Since the structure in which the through hole is provided in the center of the lid as described above significantly impairs the ability of the lid to completely close the lid, this known example has the defect that it can only be applied to special applications where complete closing is unnecessary.

The present invention was devised in view of the above-mentioned circumstances, and although the function of the lid is not impaired in any way and it is possible to completely close the lid, it is possible to attach the lid to the cabinet without rattling and close the opening. It is an object of the present invention to provide an opening/closing lid device that can be effectively closed.

An embodiment in which the present invention is applied to a battery cover of a cabinet in an electronic device will be described below with reference to the drawings.

First, the first embodiment will be described with reference to FIGS. 1 to 7. Reference numeral 1 indicates a cabinet, and reference numeral 2 indicates a vertically elongated rectangular opening/closing lid. The opening/closing lid 2 is installed in a rectangular recess 1a provided vertically on the back of the cabinet 1, and closes an opening 3 for storing batteries provided inside the recess 1a. . The cabinet 1 and the opening/closing lid 2 are made of synthetic resin such as ABS resin.

On the back side of the opening/closing lid 2, one locking part 4 is integrally molded at approximately the center of the upper end 2a in the left and right width direction, and at both left and right ends of the lower end 2b in the left and right width direction. A pair of locking parts 5
is integrally molded. On the other hand, cabinet 1
A shoulder 6 for fitting the opening/closing lid 2 is integrally formed on the outer periphery of the opening 3 within the recess 1a. In this example, an annular packing 8 is fitted onto the opening/closing lid abutting surface 7 of the shoulder portion 6. The packing 8 is made of a soft material such as rubber or soft synthetic resin. The locking portion 4 at the upper end 2a of the opening/closing lid 2 is constituted by a substantially V-shaped elastic piece 10 and a locking pawl 11 provided on the elastic piece 10. . Note that the tip of the elastic piece 10 serves as a finger press portion 12. On the other hand, the cabinet 1 is provided with an engagement hole 13 in which the locking portion 4 is to be engaged, and an engagement portion 14 in which the locking pawl 11 is to be engaged is provided at the open end of the engagement hole 13. It is being Further, the pair of locking portions 5 at the lower end 2b of the opening/closing lid 2 have almost no elasticity, and are formed into locking pieces 16 bent in a substantially U-shape.
Both locking pieces 16 are configured to engage with corner portions 17 of the lower side of the shoulder portion 6.

According to the opening/closing lid device configured in this manner, first, the lower end 2a of the opening/closing lid 2 is inserted into the lower end side of the recess 1a as shown by the chain line in FIG. 16 to engage the engaging portion 17. Next, the opening/closing lid 2 is rotated clockwise in FIG. 2, and the locking portion 4 is pushed into the engagement hole 13 by its elastic piece 10. At this time, the elastic piece 10 is inserted into the engagement hole 13 while being bent against its elasticity, and the locking pawl 11 is engaged with the engagement portion 14. As a result, the opening/closing lid 2 is installed in the recess 1a, the opening 3 is closed by the opening/closing lid 2, and the opening/closing lid 2 is locked to the cabinet 1. At this time, the engaging portion 14
By pushing the locking piece 4 into engagement, the upper end 2a side of the opening/closing lid 2 is drawn toward the opening/closing lid abutting surface 7 side. In addition, due to the cam action between the slope part of both the locking pieces 16 of both locking parts 5 and the engaging part 17 based on the downward elastic repulsive force of the elastic piece 10 of the locking part 4, the lower end 2b of the opening/closing lid 2 The side is also drawn toward the opening/closing lid abutting surface 7 side. As a result, the peripheral portion 2c of the opening/closing lid 2 is pressed against the packing 8 around its entire circumference.

In addition, when removing the opening/closing lid 2, in the closed state as shown by the solid line in FIG. 2, push the finger push portion 12 of the locking portion 4 slightly to the right in FIG. Then, the locking claw 11 is disengaged from the engaging portion 14, and the opening/closing lid 2 can be pulled out.

However, in this lever opening/closing lid device, the upper end 2a side of the opening/closing lid 2 is arranged such that the approximately central portion in the left and right width direction thereof is spaced apart from the opening/closing lid abutting surface 7, as shown clearly in FIG. It is convexly curved. The locking portion 4 is provided on the upper end 2a of the opening/closing lid 2 at approximately the center in the left-right width direction.

Therefore, when the opening/closing lid 2 is attached to the cabinet 1 as described above (when closed), the plate of the opening/closing lid 2 moves toward the opening/closing lid abutting surface 7 based on the engagement of the locking part 4 with the engaging part 14. A drawing force P ₁ in the thickness direction (see FIG. 4) is applied to the upper end 2a of the opening/closing lid 2 at approximately the center in the left-right width direction. As a result, the upper end 2a of the opening/closing lid 2 bends against its elasticity, and the above-mentioned convex curvature of the upper end 2a is corrected into a flat shape as shown in FIG. 4, that is, the upper end is elastically deformed. The peripheral portion 2c on the side 2a comes to come into elastic contact with the opening/closing lid contacting surface 7.

On the other hand, as clearly shown in FIG. 7, the lower end 2b side of the opening/closing lid 2 is curved in a concave manner so that its substantially central portion in the left-right width direction approaches the opening/closing lid abutment surface 7. The lower end 2a of the opening/closing lid 2 is provided with the pair of locking portions 5 on both sides in the left and right width direction.

Therefore, when the opening/closing lid 2 is attached to the cabinet 1 as described above (when closed), the convex both sides of the lower end 2b of the opening/closing lid 2 come into contact with the opening/closing lid abutment surface 7, and both locking portions 5 engages with the engaging portion 17, a pulling force P ₂ (sixth
(see figure) occurs. As a result, the lower end 2 of the opening/closing lid 2
The b side bends against its elasticity, and the aforementioned concave curvature of the lower end 2b is corrected into a flat shape as shown in FIG. 6, and the peripheral part 2c on the lower end 2b side is
comes to come into elastic contact with the opening/closing lid contact surface 7.

As clearly shown in FIG. 3, the left and right sides 2d of the opening/closing lid 2 are curved in a concave manner so that substantially the center in the vertical longitudinal direction approaches the opening/closing lid abutment surface 7. . On the other hand, when the opening/closing lid 2 is attached to the cabinet 1 (when it is closed) as described above, the opening/closing lid rests are attached to both the upper and lower ends 2a, 2b of the opening/closing lid 2 by the engagement of the upper and lower locking parts 4, 5. An attractive force P ₃ (see Fig. 2) is applied to the contact surface 7 side. As a result, the opening/closing lid 2 bends against its elasticity, and the both sides 2
The aforementioned concave curvature of d is corrected into a flat shape as clearly shown in FIG. 2, and the peripheral portions 2c of both side portions 2d are evenly and reliably pressed against the packing 8.

Further, the above-mentioned packing 8 is fitted into an annular groove 19 provided in the shoulder portion 6, or is bonded with an adhesive as required in the above-mentioned fitted state. One or more protrusions 20 are integrally formed in a ring shape on the surface 8a of the packing 8. The protrusion 20 is configured to have a very high elasticity effect, such as a thin triangular cross section.

As described above, according to the present invention, since the opening/closing lid 2 is elastically attached to the cabinet 1, the opening/closing lid 2 or the cabinet 1 can be attached without rattling even if there is an error in dimensional accuracy or deformation due to heating temperature. According to this embodiment, the opening/closing lid 2 is connected to the cabinet 1.
When attached to (closed), the peripheral part 2c of the opening/closing lid 2 is packed 8 by the back surface 2c'.
It is crimped onto the protrusion 20 of. Since the crimping area of the protrusion 20 is small, a large concentrated stress is generated, and the closure of the opening/closing lid 2 becomes extremely high, and the drip-proof and waterproof effect at the closing part (i.e., the crimping part) is extremely low. It will be expensive. Further, according to a method in which the rear surface 2c' of the peripheral portion 2c of the opening/closing lid 2 is crimped to the packing 8, for example, the packing is crimped to the outer peripheral end surface of the opening/closing lid 2, and when the opening/closing lid 2 is attached or removed, there is a gap between the packing 8 and the packing 8. The opening/closing lid 2 can be attached and detached very easily without causing a large contact resistance, and in addition, a very strong pressure bonding force can be obtained between the lid 2 and the packing 8 in the closed state, resulting in a very high resistance. Waterproofing effect can be obtained.

FIG. 8 shows a second embodiment, and in this case, the lower end 2b side of the opening/closing lid 2, as well as the upper end 2a side, has a substantially central portion in the left and right width direction that can be opened/closed. It is curved convexly so as to be spaced apart from the lid abutting surface 7. In this case, one locking portion 5 on the lower end 2b side of the opening/closing lid 2 is provided approximately at the center in the left-right width direction.

Even with this configuration, the present invention exhibits the same effects as the first embodiment. Also in this example, since the packing 8 is provided, the lower end 2b side of the opening/closing lid 2 is evenly and reliably crimped to the packing 8 in exactly the same way as the upper end 2a side.

Note that the present invention is not limited to battery covers, but can be widely applied to other types of opening/closing covers.

As mentioned above, the present invention uses a nearly rectangular opening/closing lid molded from synthetic resin, and the opening/closing lid is installed in a recess provided in a cabinet, and the opening provided inside the recess is opened. In the opening/closing lid device, a pair of opposed end portions of the opening/closing lid are provided with locking portions integrally molded to lock the pair of ends to the cabinet, respectively; At least one end of the opening/closing lid is curved into a convex shape such that the center thereof is further away from the recessed portion of the cabinet than both sides thereof, and the opening/closing lid has the above-mentioned shape at approximately the center of one end. One locking part is provided, and the recessed part of the cabinet is provided with a contact part with which at least both sides of one end of the opening/closing lid can abut, and the opening/closing lid is installed in the recessed part of the cabinet. By locking the locking portions provided at each end of the pair to the engaging portions provided on the cabinet, the opening/closing lid can be attached to the cabinet by both sides of one end. While the lid is in contact with the abutting part, the central part of one end of the opening/closing lid is pulled toward the abutting part and the one end is elastically deformed into a substantially flat shape. The opening/closing lid device is characterized in that the opening is configured to be closed with a lid.

Therefore, according to the present invention, when the opening/closing lid is installed in the recess of the cabinet and the opening is closed, the locking portions provided at the opposite ends of the opening/closing lid are locked to the cabinet. Therefore, the function of the lid is not impaired at all by providing a through hole in the center of the opening/closing lid, and the lid can be completely closed, and there is no need to specify the use.

However, according to the present invention, when the opening/closing lid is installed in the recess of the cabinet, at least one end of the opening/closing lid, which is curved in a convex shape in advance, elastically becomes flat, so that the opening/closing lid does not wobble. is resolved. Furthermore, at least one end of the opening/closing lid itself is curved in a convex manner, and the elastic effect resulting from the curvature is utilized, and a special structure such as a leaf spring is used to exert the elastic action. This is not a new addition to the opening/closing lid, and the locking part for the cabinet is also integrally molded onto the opening/closing lid, making it a single-piece opening/closing lid with a locking part. The structure and shape of the opening/closing lid are very simple, and the structure of the mold for molding the opening/closing lid from synthetic resin is simple, and the mold can be easily removed during molding. can be done very easily and at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and
FIG. 1 is a front view of the first embodiment, FIG. 2 is a cross-sectional view taken along the line taken from FIG. 1, FIG. 3 is a cross-sectional view taken from FIG. 2 in an exploded state, and FIG. Fifth
The figure is a cross-sectional view of the exploded state of FIG. 4, FIG. 6 is a cross-sectional view taken along the line of FIG. 1, FIG. 7 is a cross-sectional view of the exploded state of FIG. 6, and FIG. 8 is a perspective view of the second embodiment. be. In addition, in the symbols used in the drawings, 1 is the cabinet, 1a is the recess, 2 is the opening/closing lid, 2a,
2b is a pair of opposing ends, both upper and lower ends;
3 is an opening, 4 and 5 are locking parts, 7 is an opening/closing lid abutting surface, and 14 and 17 are engaging parts.

Claims (1)

[Scope of utility model registration request] A nearly rectangular opening/closing lid molded from synthetic resin is used, and the opening/closing lid is installed in a recess provided in the cabinet to close the opening provided inside the recess. In the opening/closing lid device, locking portions for locking the pair of end portions to the cabinet are integrally molded at a pair of opposing ends of the opening/closing lid, and at least one of the opening/closing lids is fixed. The end portion is curved into a convex shape such that the center portion thereof is further away from the recessed portion of the cabinet than the both sides thereof, and the one locking portion is provided approximately in the center of one end portion of the opening/closing lid. The concave portion of the cabinet is provided with contact portions that can be brought into contact with at least both sides of one end of the opening/closing lid, and the opening/closing lid is mounted in the recess of the cabinet and contact portions are provided at each of the pair of ends thereof. By respectively locking the locking portions provided in the lid to the engaging portions provided on the cabinet, the opening/closing lid is brought into contact with the contact portion of the cabinet by both sides of one end thereof. In this state, the central part of one end of the opening/closing lid is pulled toward the abutting part to elastically deform the one end into a substantially flat shape, and the opening is closed with the opening/closing lid. An opening/closing lid device characterized in that it is configured to do so.