JPH0533576U - Drawer device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a drawer device having a structure that can be simplified and rattle hardly occurs. [Composition] An outer case having a bottom wall and left and right side walls,
An inner case slidably mounted on the bottom wall of the outer case and retractable from the open surface of the outer case, spring means for urging the inner case in a direction projecting from the outer case, and an inner case for the outer case. A pulling-out device including a holding means for holding the case in the retracted state and a rotary damper means for limiting the protruding speed of the inner case from the outer case is provided on the bottom wall of the outer case and the inner case. A pinion gear which is formed with a ridge and a groove which complementarily engage each other in the center of the sliding surfaces along the sliding direction, forms a rack gear on the ridge, and is connected to the rotary damper means. The outer peripheral portion of the above is projected into the groove and meshed with the rack gear.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a drawer device, and more particularly to a drawer device suitable for a slide retractable operation panel such as an audio device.

[0002]

[Prior Art]

 For audio equipment, there is a tendency to adopt a design in which the panel surface to which the rarely used adjustment knob is attached is usually stored inside the housing in order to make the external appearance simple. It is in. This operation panel is provided inside the inner case that is slidably slid into the outer case fixed to the housing, and it is possible to maintain the stored state with an alternate latch mechanism. It is common practice to provide a protrusion direction urging device that is a combination of spring means and a grease-filled damper so that the protrusion speed can be appropriately set to improve the quality.

As a drawer device applied to such a slide storage type operation panel, for example, as disclosed in Japanese Utility Model Laid-Open No. 2-21055, a pinion gear with a built-in damper provided on the inner case side. On the other hand, a configuration is known in which a rack gear integrally formed on the outer case side meshes.

[0004]

[Problems to be solved by the device]

 According to the conventional configuration disclosed in the above publication, the protrusion formed on the outer surface of the side wall of the inner case engages with the guide groove formed on the inner surface of the side wall of the outer case, and the inner case appears and disappears from the outer case. The operation speed of the inner case was set by restricting the direction of operation and engaging the pinion gear of the rotary damper fixed to the inner case with the rack gear formed on the bottom wall of the outer case. .. According to this, since the sliding guide and the rack gear are separately formed, the structure tends to be complicated, and the positional accuracy between them is low, and rattling is likely to occur.

The present invention has been devised in order to eliminate such inconveniences of the prior art, and its main purpose is to provide a structure that can simplify the structure and that is free from rattling. To provide a dispensing device.

[0006]

[Means for Solving the Problems]

 According to the present invention, such an object is to provide an outer case having a bottom wall and left and right side walls, and an inner case slidably mounted on the bottom wall of the outer case and capable of projecting and retracting from the open surface of the outer case. The case, spring means for urging the inner case in a direction projecting from the outer case, holding means for holding the inner case in the retracted state with respect to the outer case, and limiting the protruding speed of the inner case from the outer case A pull-out device including a rotary damper means for sliding the ridges and grooves that complementarily engage each other in the central portions of the sliding surfaces of the bottom walls of the outer case and the inner case. The rack gear is formed along the direction, the rack gear is formed on the protrusion, and the outer peripheral portion of the pinion gear connected to the rotary damper means is projected into the groove and meshed with the rack gear. It is achieved by the.

[0007]

[Action]

 According to this structure, the inner case is slid smoothly without rattling due to the engagement between the protrusion and the groove formed in the central portions of the sliding surfaces of the bottom walls of the outer case and the inner case. The motion is obtained. The pinion gear connected to the rotary damper means meshes with the rack gear, thereby limiting the protrusion speed of the inner case.

[0008]

【Example】

 Hereinafter, the construction of the present invention will be described in detail with reference to specific embodiments shown in the accompanying drawings.

1 to 4 show the whole of a drawer device constructed according to the present invention. The drawer device 1 includes an outer case 2 having an open front surface, and an inner case 3 slidably mounted on the bottom wall surface of the outer case 2 and capable of projecting and retracting through an opening in the front surface of the outer case 2. Is becoming

The outer case 2 includes a box-shaped lower case 2a having an open upper surface and a front surface, and an upper case 2b closing the upper surface of the lower case 2a. The outer case 2 is formed by injection molding of a synthetic resin material. Has been done. The lower case 2a and the upper case 2b are integrated by screwing the side part and the rear part of each other.

At the center of the inner surface of the bottom wall of the outer case 2, a protrusion 4 having a convex cross section is provided along the front-rear direction. A rack gear 5 is formed on one side surface on the upper side of the protrusion 4 over the entire extension. A known alternate push / push type latch device 6 is provided at the center of the inner surface of the rear wall of the outer case 2.

The inner case 3 has a box shape with an open upper surface, and is formed by injection molding of a synthetic resin material. An outward flange 7 is formed on the side of the opening surface of the inner case 3 so as to project laterally. The flange 7 should be sandwiched between the side edges of the lower case 2a and the upper case 2b. As a result, the inner case 3 is held in the outer case 2 so as not to rattle in the vertical direction. A protrusion 8 having a semicircular cross section is formed along the front-rear direction at a portion of the side edge of the upper case 2b corresponding to the flange 7 of the inner case 3 (Fig. 2). By pressing the flange 7 with 8, the sliding resistance of the inner case 3 is reduced.

A groove 9 is formed in the center of the outer surface of the bottom wall of the inner case 3 along the front-rear direction to receive the ridge 4 of the bottom wall of the outer case 2 in contact with both side surfaces thereof. By the engagement of the protrusions 4 and the grooves 9, the inner case 3 can be slid back and forth while being guided by the outer case 2 without rattling in the left-right direction.

At the center rear portion of the bottom wall of the inner case 3, a known grease-sealed rotary damper 10 is mounted. The pinion gear 11 fixed to the rotary shaft of the rotary damper 10 projects into the inside of the groove 9 through an opening provided in the bottom wall of the inner case 3, and projects into the bottom wall of the outer case 2. It is adapted to be able to mesh with a rack gear 5 formed on the side surface of the strip 4.

On both sides of the outer surface of the rear wall of the inner case 3, bobbins of a constant load spring 12 formed by closely winding a spiral spring are attached. The constant force spring 12 has a space between the bottom walls of the outer case 2 and the inner case 3 that face each other pulled out forward, and then has a hole 13 formed in a front end side of the bottom wall of the outer case 2. The end 12a is connected. The constant load spring 12 constantly elastically urges the inner case 3 toward the inside of the outer case 2.

On the outer surface of the rear wall of the inner case 3, there is formed a projection 14 which can be engaged with the latch device 6 provided on the inner surface of the rear wall of the outer case 2. The projection 14 is engaged with the latch device 6. Together, the inner case 3 is held inside the outer case 2.

A panel of operation switches (not shown) is fitted on the upper surface of the inner case 3.

By pushing the inner case 3 into the outer case 2 and engaging the protrusion 14 with the latch device 6, the outer case 2 and the inner case 3 are held together. Then, by further pushing the inner case 3, the latch is released. When the latch is released, the inner case 3 is pushed out of the outer case 2 by the elastic force of the constant force spring 12, but at this time, the pinion gear 11 of the rotary damper 10 meshes with the rack gear 5. The protrusion speed of the inner case 3 is limited by the rotation resistance of the pinion gear 11. By thus slowing the operating speed of the inner case 3 to some extent, it is possible to create a solid feeling.

[0019]

[Effect of the device]

 As described above, according to the present invention, the guide in the sliding direction, particularly the left-right direction, between the outer case and the inner case and the rack gear with which the pinion gear of the rotary damper meshes are integrally formed. It is possible to simplify the structure. Moreover, since they are formed in the common part, there is no problem in accuracy compared to the structure that is formed apart from each other as in the conventional structure, so smooth sliding motion without rattling. Is obtained. Therefore, it has a great effect on improving the quality of the drawer device provided with the operation panel and the like.

[Brief description of drawings]

FIG. 1 is a top view showing a state in which an inner case of the device of the present invention partially protrudes from an outer case by partially cutting it out.

FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1 with the inner case housed in the outer case.

FIG. 3 is a sectional view similarly cut along line III-III.

FIG. 4 is a sectional view similarly cut along line IV-IV.

[Explanation of symbols]

 1 Drawer 2 Outer Case 2a Lower Case 2b Upper Case 3 Inner Case 4 Protrusion 5 Rack Gear 6 Latch Device 7 Flange 8 Protrusion 9 Groove 10 Rotation Damper 11 Pinion Gear 12 Constant Load Spring 12a End 13 Hole 14 Protrusion

Continued Front Page (72) Creator Gen Oma 1 184 Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa 1 Nifco Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. An outer case having a bottom wall and left and right side walls, an inner case slidably mounted on the bottom wall of the outer case and retractable from an open surface of the outer case, and the inner case. Spring means for urging the case in a direction projecting from the outer case, holding means for holding the inner case in a retracted state with respect to the outer case, and limiting a protruding speed of the inner case from the outer case. And a rotary damper means for the pulling-out device, wherein the central portions of the sliding surfaces of the bottom walls of the outer case and the inner case mutually complementarily engage with each other. A groove is formed along the sliding direction, a rack gear is formed on the ridge, and the outer peripheral portion of the pinion gear connected to the rotary damper means is the rack gear. Extension device, characterized in that the are projects into the groove to mate.