JPH0363835B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to the structure of an electrical and electronic device having a drawer-shaped movable panel that is slidable in the depth direction in a part of the front panel, and particularly relates to a structure of an electrical and electronic device that is space-saving and simple. The present invention relates to a drawer mechanism suitable for realizing smooth operation with a structure.

[Background of the invention]

An example of a drawer mechanism using a spring for power can be found in Japanese Utility Model Application No. 55-103803. Perhaps because this example is aimed at a small drawer for in-vehicle audio equipment, no particular measures are taken to ensure left-right synchronization of the sliding movement of the drawer. Further, structurally, the amount of movement of the drawer and the amount of deformation of the spring are the same, and this point imposes restrictions on the characteristics of the spring, which have an important effect on the operational feel.

[Purpose of the invention]

The purpose of the present invention is to ensure left-right synchronization during the sliding operation of a drawer with a large left-right width, while keeping the space occupied in the depth direction of the set small.
Moreover, it is an object of the present invention to provide a drawer mechanism that has a good operational feel.

[Summary of the invention]

The present invention uses a synchronizing shaft, two pinions, and four racks to obtain left-right synchronization of the drawer operation, and as the drawer moves, the synchronizing shaft moves by half the amount of drawer movement. This makes it possible to ensure synchronization in a small space, and by biasing the drawer against the moving synchronization shaft with a spring, the amount of spring deformation can be reduced to half the amount of drawer movement, making it possible to It is possible to obtain a natural operating feeling based on the spring characteristics with no spring characteristics.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawer mechanism of the present invention will be explained below with reference to embodiments shown in the drawings. First, an overview of the functions is shown in Figures 1 and 2.
This will be explained using figures. Both Figures 1 and 2 are VTRs.
represents the appearance of The drawer 1 is placed on the front side of the VTR main body 30 and is used by being pulled out in front of the VTR main body 30. Although the drawer 1 is biased toward the front by a spring shown later, it is stabilized in the position shown in FIG. 1 by a suitable locking means (not shown). When the lock is released by performing an appropriate operation, the drawer 1 will protrude to the position shown in FIG. 2 while its speed is controlled by a buffer means (not shown). In drawer 1, as shown in Figure 2.
Various buttons 1a, 1b, 1 for VTR operation
c is provided, and the VTR can be operated in the state shown in Figure 2. When not in use, the drawer 1 can be pushed back by hand against the spring and fixed again by the locking means in the position shown in FIG.

Next, the main components and structure of the drawer of the present invention are as follows:
This will be explained using FIGS. 3 and 4. The drawer 1 is integral with support members 2 and 3. Also, drawer 1
It has VTR operation buttons 1a, 1b, 1c, etc.
As shown in FIG. 4, a circuit board 11 is built-in. A drawer bottom plate 9 is fixed to the drawer 1 for protecting the circuit board 11 and reinforcing the drawer 1. The drawer 1 is a plastic molded product, and the drawer bottom plate 11 is an iron plate. Now, a guide 4 and a guide 5 face each other from the left and right with the drawer 1 in between, and these guides 4 and 5 are fixed to the main body of the VTR set. The groove 4b of the guide 4 and the support member 2 fit together, and the groove 5b of the guide 5 and the support member 3 fit together slidably in a horizontal plane, and the groove 4c of the guide 4 and the protrusion 2b of the support member 2 fit together in the front-rear direction. Since the drawer 1 is fitted so as to be slidable in the vertical direction, the drawer 1 is slidable in the front and rear directions with respect to the guides 4 and 5. However, with only the above-mentioned configuration, due to the fitting play, the variation in the distance between the guides 4 and 5, and the lack of rigidity of the drawer 1 itself,
For example, even if a force is applied in the longitudinal direction near the left end of drawer 1, the right end will not follow. In other words, the left and right sides cannot be synchronized. Then, the synchronization shaft 8, pinions 6, 7, and rack parts 2a, 3a, 4a, 5a
I will explain about it.

The support members 2 and 3 integrated with the drawer 1 and the left and right guides 4 and 5 each have rack portions 2a, 3a, 4a and 5a as shown in FIG.
It is sandwiched between the two rack parts 2a and 4a and engages with both of the racks. The same applies to the pinion 7 and the rack parts 3a, 5a. A synchronizing shaft 8 having sufficient rigidity is still inserted and fixed to the pinions 6, 7, so that the pinions 6, 7 always rotate at the same time and by the same amount. In addition, so that the synchronous shaft 8 is correctly perpendicular to the sliding direction of the drawer 1,
The positional relationship between each rack part and the pinion teeth is set. With the above configuration, the amount of sliding movement of the drawer 1, that is, the amount of movement of the left and right rack parts 2a, 3a, and the amount of rotation of the pinions 6, 7, that is, the amount of rotation of the synchronous shaft 8.
corresponds to the amount of rotation, that is, the amount of rolling movement of the synchronous shaft 8. The ratio of the amount of movement of the drawer 1 to the amount of movement of the synchronous shaft 8 is 2:1. Next, biasing of the drawer 1 will be explained. A drawer bottom plate 9 fixed to the drawer 1 is provided with a hook portion 9a extending rearward from the drawer bottom plate 9. A tension coil spring 1 is attached to the hook part 9a and the synchronizing shaft 8.
Multiply by 0. With the force of this spring 10, the easy part 2
The pinions 6, 7 are urged to roll against the rack portions 4a, 3a, and the pinions 6, 7 are urged to roll against the rack portions 4a, 5a in the direction of the arrow. That is, the drawer 1 is biased in the direction of the arrow, and the magnitude of the force is 1/2 of the magnitude of the force of the spring. (ignoring each sliding loss), and the amount of deformation of the spring is equal to the amount of relative movement between drawer 1 and synchronization shaft 8, and drawer 1
is half the amount of movement. Comparing the present invention with the case where the drawer 1 is directly biased against the guide 4 or the guide 5, the "load/deformation amount" of the spring required to apply the same biasing force to the drawer 1, that is, the spring constant is The present invention is four times as large as others. Since the operation of pushing and twisting the drawer into the set is based on direct input, it is usually desirable that the biasing force on the drawer be small within the range that allows the drawer to operate reliably, and the change in biasing force felt by the hand at this time is I want it to be gentle. Furthermore, assuming a situation where the overall length of the spring is limited due to space constraints inside the set and the spring constant is forced to be large, the superiority of the present invention will be recognized. Next, details of the guide 4 of the present invention will be explained using FIGS. 11 to 14. As shown in FIG. 11, a temporary lock arm 4e and a retaining claw 4f are provided integrally with the guide 4. Temporary lock arm 4e and retaining claw 4f
Each is constructed of a material and shape that allows it to deflect elastically under an appropriate force. On the other hand, a cylindrical protrusion 6a coaxial with the pinion is provided on the opposite side of the pinion 6 from the synchronization shaft side. The protrusion 6a is supported by the upper surface of the temporary lock arm 4e and a guide surface 4d provided on the guide 4 continuously therefrom. Thereby, even without the drawer 1, the engagement between the pinion 6 and the rack portion 4a is maintained. The relationship between the pinion 6 and a predetermined portion of the guide 4 (that is, the guide surface 4d and the rack portion 4a) is the same as that of the pinion 7 and the guide 5 described above.
It is also formed in the same way.

The functions of the above structure will be explained using FIGS. 12 to 14. Figures 12 to 14 show guide 4.
Although only the and pinion 6 are depicted, the aforementioned guide 5 and pinion 7 are provided opposite these,
Needless to say, they all work at the same time. First, guide 4 and guide 5 are fixed facing each other.
In between, a synchronizing shaft 8 with two pinions 6, 7 fixed at both ends is installed according to arrow A. At this time, the protrusion 6a of the pinion 6 is supported by the guide surface 4d shown in FIG. 11, and the pinion 6 meshes with the rack portion 4a. Therefore, the pinion 6 moves in the direction of arrow A while rolling. The same applies to the pinion 7, and the synchronous shaft 8 moves in the direction of arrow A while rotating while maintaining left and right synchronization. When the pinion 6 is further advanced to a predetermined position, the temporary lock arm 4e grips the protrusion 6a of the pinion 6 as shown in FIG.
Then, the position and attitude of the pinion 7 are temporarily locked.
In this state, insert the drawer 1, that is, the support members 2 and 3 integral with the drawer 1, into the guides 4 and 5 at the same time on the left and right sides of the rack portions 2a and 3a provided on the support members 2 and 3, according to the arrow B. do. Then, the easy parts 2a and 3a simultaneously engage the pinions 6 and 3a, respectively.
7, and by meshing, the pinion 6,
7 rotates and moves, overcomes the temporary lock arm 4e as shown in FIG. 13, and advances to the state shown in FIG. 14. FIG. 14 shows a recess 2 provided in the support member 2.
The retaining claw 4f catches on c, and the support member 2
In other words, this indicates that the drawer 1 cannot be removed. With the above, the easy parts 2a, 3a, 4a, 5a
The stopper is applied to ensure that a proper meshing relationship between the pinions 6 and 7 is obtained and that this meshing relationship is not lost, that is, to prevent the drawer 1 from moving forward beyond a predetermined position.

Other embodiments of the present invention are shown in FIGS. 5 to 8.
5 and 6 show the case where the synchronizing shaft 8 is rotatably fixed to the set base 13 of the set main body, and rack parts 2a' and 3a' are provided on the left and right sides of the drawer 1, and FIGS. This is a case in which the synchronizing shaft 8 is rotatably fixed to the drawer 1, and rack portions 4a' and 5a' are provided on the set main body side. Figure 9, 1st
FIG. 0 again shows the embodiment shown in FIG. 5, 7, and 9 show the drawer 1 being pushed into the set body, and FIGS. 6, 8, and 10 show the drawer 1 protruding. In the case of Figures 5 to 8, the rack parts 2a', 3a' or 4a', 5
The length a' must be greater than the amount of movement of the drawer 1.
In the case of Figures 9 and 10, the easy parts 2a and 3
The lengths of a, 4a, and 5a are about half.

〔Effect of the invention〕

According to the present invention, by using the synchronizing shaft, two pinions, and four racks, it is possible to ensure horizontal synchronization of the operation of a drawer having a large left and right width while keeping the space occupied in the depth direction within the set small. Further, according to the present invention, it is possible to use a spring that deforms by half the amount of drawer movement, so it is possible to obtain a natural operational feeling based on reasonable spring characteristics. Furthermore, according to the present invention, a proper meshing relationship between the four racks and the two pinions can be easily obtained by the provisional locking mechanism of the synchronizing shaft.

[Brief explanation of drawings]

1 and 2 are perspective views of a VTR implementing the drawer mechanism of the present invention, FIG. 3 is a perspective view of the drawer mechanism of the present invention, FIG. 4 is a rear view of FIG. 3, and FIG.
Figures 6, 7, and 8 are conceptual diagrams on the right side showing other embodiments of the present invention, Figures 9 and 10 are conceptual diagrams on the right side of Figure 3, and Figure 11 is a conceptual diagram on the right side of Figure 3. The enlarged perspective views of the main parts, FIG. 12, FIG. 13, and FIG. 14 are left conceptual views of the present invention. Explanation of symbols: 1... Drawer, 2, 3... Support member, 2a, 3a... Rack part, 4, 5... Guide, 4a... 5a... Rack part, 6, 7... Pinion, 8... Synchronous shaft, 9...Drawer bottom plate, 9a...Hook part, 10...Spring, 11...
...Circuit board, 12... Design structure section, 13... Set base, 4e... Temporary lock arm, 4f... Retaining claw.

Claims (1)

[Scope of Claims] 1 Consists of a drawer that carries an operating device, a display device, a cassette mounting device, etc. and forms part of the front panel, and a guide member that supports the drawer so as to be slidable in a predetermined direction. In the drawer mechanism, the drawer has first racks integral with the drawer on each of the left and right sides of the drawer, and the guide member has second racks at positions corresponding to the first racks of the drawer, respectively. Consisting of one pinion each that meshes simultaneously with a pair of first and second racks on each side, and a synchronization shaft that connects the two pinions so as to synchronize the rolling movement of the two pinions. A drawer mechanism characterized by: 2. Claims characterized in that the guide member has a pinion guide that maintains engagement between the pinion and the second rack, and the pinion guide has a gripping means that makes the pinion unable to roll. Drawer mechanism as described in paragraph 1. 3. The drawer has a spring that urges the drawer to slide, and the spring is stretched between the drawer and the synchronization shaft, and the amount of deformation of the spring is half of the amount of sliding movement of the drawer. A drawer mechanism according to claim 1, characterized in that: