JPS5843271Y2 - Chassis fixing, drawer, rotation device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a chassis fixing, drawing and rotating device.

The chassis is normally fixed inside the cabinet, but it can be pulled out of the cabinet or rotated after being pulled out for repair and inspection, making it easier to repair and inspect the printed circuit boards and electrical components attached to the chassis.

The purpose of the present invention is to provide a chassis that has a simple and inexpensive structure for fixing, pulling out, and rotating the chassis, and has good handling operability and safety.

The present proposal will be explained with drawings.

FIG. 1 is an exploded perspective view showing a part of the embodiment of the present invention, in which a guide member 3 is fixed to the bottom surface 2 of the cabinet, a chassis 4 is placed on this guide member 3, and a guide member 3 is fixed to the bottom surface 2 of the cabinet. Both ends 8 of the string body 7 are locked between a member 5 provided at the front end of the chassis 4 and a member 6 provided on the chassis 4.

FIG. 2 is a sectional view taken along line A-A in FIG.
The chassis 4 is shown placed on top.

Figure 3 is a side view of the chassis 4 fixed at a predetermined position on the bottom surface 2 of the cabinet 1, and Figure 4 is a side view of the chassis 4 fixed at a predetermined position on the bottom surface 2 of the cabinet 1.
The back cover 10 (Fig. 3) of 1 is removed, and the chassis 4 is
FIG. 5 is a side view of the chassis 4 at the end position when it is being pulled out to the rear, and FIG. 6 is a side view of the end position when the rear end 12 of the chassis 4 is lifted upward and rotated. FIG.

The guide member 3 has a fixed part 14 and a movable part 16 mounted so as to be movable along a groove 15 provided on one side of the fixed part 14.

The fixed part 14 has a member 5 projecting upward in a T-shape at the front end thereof, and the step part 18 from which the front end 17 of the chassis 4 is supported so as to be accessible and the protrusion 8 at one end of the string body 7 are detachable. It has a groove 19 that is supported by.

The root small diameter portion 8b of the protrusion 8 can be inserted into this groove 19, but the tip large diameter portion 8a cannot be inserted thereinto.

The upper surface 20 of the fixed portion 14 has a protruding rail groove 21.

The upper surface 20 has an intermediate portion 20b that is inclined so as to be gradually higher from the front end 20a to the rear end 20C.

The rear end surface 22 of the fixed portion 14 has the rear end 12 (
The screw hole (Fig. 3) into which the screw 23 can be screwed
(not shown).

The groove 15 has a bottom wall 2 that exposes the top surface 24 of the movable part 16.
5, a side wall 26, and an upper wall 27.

The upper surface 24 of the movable part 16 has a grooved rail groove 28,
The groove 28 has a front end 28a which is inclined so as to be gradually higher toward the rear, followed by a horizontal section 28b, followed by an inclined section 28C which is gradually lowered toward the rear, and a horizontal section which continues therefrom. 28 d.

A member 30 having a recess 29 connected to the rear end 28d of the groove 28 and extending upward is formed at the rear end of the movable portion 16.

The member 30 has a stepped portion 3 into which the rear end 12 of the chassis 4 can fit.
1.

The height of the distal end surface 32 of the movable portion 16 is designed to be higher than the upper front end portion 20a of the fixed portion and lower than the rear end portion 20C.

Also, when the movable part 16 is pulled out backwards by a predetermined amount, the bottom surface 2
A claw portion 34 (FIG. 5) provided at the rear of the movable portion 16 abuts against the inner surface 33 of the distal end surface 32 of the movable portion 16 and stops the movable portion 16.

The chassis 4 has a front end 17 and a rear end 12 bent downward by a predetermined amount, and a guide piece 35 is fixed to the front end 17.

This guide piece 35 has an L-shaped convex portion 38 continuously formed on a front surface 36 and a lower surface 37, and four portions 39 formed on the lower surface 37.

The convex portion 38 and the concave portion 39 form the movable portion 16 of the guide member 3.
It is possible to fit into the concave groove 28 of the fixed part 14 and the convex groove 21 of the fixed part 14, respectively.

Electrical components such as a printed board 40, a transformer, and a transistor are mounted above the chassis 4.

41 is a heat sink to which heat dissipating components such as transistors are attached.

Above the heat dissipation plate 41, the fixing member 6 of the string body 7 is attached with a screw 42.
The tip 6a of the fixing member 6 is fixed to the chassis 4.
It extends toward the front end of.

Reference numeral 43 denotes a groove formed in the fixing member 6, and a large diameter hole 43 through which the large diameter portion 8a at the tip of the protrusion 8 protruding from one end of the string body 7 can be inserted.
a and the base small diameter part 8b of the protrusion 8 can be inserted, and the large diameter part 8a
The small-diameter hole 43b through which it cannot be inserted is in communication with the small diameter hole 43b.

The string body 7 is made of synthetic resin, and has a self-returning force such that the intermediate portion 7a protrudes toward one side opposite to the chassis 4.
The whole is approximately Q-shaped.

The guide members 3 are arranged on the bottom surface 2 of the cabinet 1 at a predetermined distance apart.

The guide piece 35 faces the guide member 3 and is attached to the chassis 4.
is fixed to the front end 17 of.

The chassis 4 is placed on the guide member 3 so that the concave portion 39 and the convex portion 38 of the guide piece 35 fit into the convex rail portion 21 of the fixed portion 14 of the guide member 3 and the concave rail portion 28 of the movable portion 16. Ru.

The string body 7 is supported by the fixing members 5 and 6 so that the intermediate portion 7a projects forward on the opposite side from the chassis 4.

This string body 7 is arranged at both ends of the front of the chassis 4.

When the chassis 4 is inserted into the front of the cabinet bottom 2, the front end 17 of the chassis 4 is inserted into and supported by the step 18 of the member 5 at the front end of the fixed rail section 14, and the rear end 12 of the chassis 4 is inserted into the step 18 of the member 5 at the front end of the fixed rail section 14. Screw 23 on the rear end surface 22 of 14
is fixed.

At this time, the rear end 12 of the chassis 4 abuts against the stepped portion 31 of the member 30 at the rear end of the movable portion 16, and the movable portion 16 is inserted forward together with the chassis 4.

FIG. 3 shows a state in which the chassis 4 is fixed at a predetermined position within the cabinet 1.

At this time, the guide piece 35 has a concave portion 39 that corresponds to the fixed guide portion 14.
The protrusion 38 is disengaged from the upper front end 28 a of the movable guide portion 16 .

When pulling out the chassis 4 backwards, remove the back cover 10,
Remove the screw 23, hold the rear end 12 of the chassis 4, and
Pull out to 1.

Then, the concave portion 39 of the guide piece 35 at the front end of the chassis 4 is moved rearward along the upper surface 20 of the fixed guide portion 14, but at this time, since the front end portion 20a of the upper surface 20 is low, the convex portion 38 The part having the movable guide part 16
The movable guide portion 16 protrudes downward from the upper end of the front end surface 32, abuts against the front end surface 32, and also moves the movable guide portion 16 rearward.

The state at this time is shown in FIG.

When the movable guide portion 16 is moved to the state shown in FIG.
The movable guide portion 16 is stopped by the claw portion 34.

Then, since the upper surface 20 of the fixed guide portion 14 becomes higher than the upper end of the front end surface 32 of the movable guide portion 16, the guide piece 3
5 is fitted into the groove 28 of the movable guide portion 16, and the guide piece 35 is guided by the movable guide portion 16 and moved rearward.

As the chassis 4 is pulled out rearward, the string body 7 is stretched straight against its elasticity.

When this string body 7 is stretched in a straight line, it becomes impossible to pull out the chassis 4 rearward.

If the rear end 12 of the chassis 4 is further moved rearward, the rear end 12 of the chassis will tend to be rotated upward 13.

When the rear end 12 of the chassis is rotated so as to be lifted upward 13, the guide piece 35 at the front end of the chassis moves rearward along the upper surface 24 of the movable guide portion 16.

When the protrusion 38 of the guide piece 35 fits into the recess 29 at the rear end of the groove 28, the movement of the guide piece 35 is stopped.

At this time, the chassis 4 attempts to further rotate in the direction of arrow 13 due to its weight, but the tip 6a of the upper member 6 abuts against the cabinet bottom surface 2, and the chassis 4 is supported while being rotated by a predetermined amount.

FIG. 6 shows this state.

In this state, the chassis 4 can be easily repaired and inspected from the back side.

On the contrary, it will be easily understood that when inserting the chassis 4 to the front of the cabinet 1, the process can be performed in the complete opposite manner.

In normal use with the chassis 4 inserted forward, the string body 7 curves forward due to its self-returning force so as not to come into contact with the heat sink 41 or electrical components mounted on the chassis 4. It is safe because it prevents it from being heated by the amount of heat or getting caught in parts.

In the above embodiment, the guide member 3 is composed of the fixed member 14 and the movable part 16, but this is done in order to increase the amount of extraction as much as possible. The case where the guide member 3 does not need to be stored compactly is not limited to this, for example, the case where the fixing member 5 is provided at the front end and the rear end 12 of the chassis 4 is fixed at the other end, or when the guide member 3 is pulled out or rotated. A member that locks the front end 17 of the rear chassis 4 (rear end surface 22 and recess 29 in FIG.
It may also be configured with a fixed guide member that has a member that has a member that has a member that has a member that also has a member that has a member that has

Furthermore, the portions that guide the front end 17 of the chassis 4 between the fixing members 5 and 30, such as the protrusion 21 and the recess 28, are not necessarily limited to these. All you have to do is move to.

For this reason, a structure may be adopted in which the left and right ends of the chassis 4 are guided by the inner surfaces of the left and right side walls of the cabinet screws 1 to 1, and the intermediate portion of the guide member 3 is removed.

According to the present invention, the front end fixing member 5 supports the front end 17 of the chassis 4 at a fixed position on the cabinet bottom surface 2 so as to be movable in and out along the bottom surface, and when the chassis front end 17 is inserted into the fixing member 5, the chassis rear end 12 is a fixing member 2 such as a screw
The rear end fixing member 22 is removably supported at 3, one end is locked to the front end fixing member 5 or a cabinet near this, and the other end is locked above the chassis 4, and the amount by which the chassis 4 is pulled out rearward. After pulling out the string body 7 having a predetermined length according to the length of the string body 7, the rear end 1 of the chassis 4 is pulled out.
2 upward from the bottom of the cabinet 2 and rotate it approximately 90 degrees.
When the chassis 4 is rotated, the front end 17 of the chassis 4 is moved rearward along the cabinet bottom surface 2 so that it can be moved in and out. When the front end 17 of the chassis 4 is inserted, the tip 6a abuts either the cabinet bottom 2 or the upper front end of the chassis 4.
Alternatively, since it is constructed with a chassis front end upper support member 6 protruding from the other side above the front end of the chassis 4, the construction is simple.
The chassis 4 can be fixed, pulled out, and rotated using parts, and an inexpensive structure can be provided.

The string body 7 can prevent the chassis 4 from being pulled out more than necessary, and in the unlikely event that the front end 1 of the chassis 4 is accidentally pulled out.
Even if the chassis 7 is not locked by the front end locking members 29, 30, the chassis 4 can be prevented from being pulled out to the extent that it falls.

In particular, since both ends of the string body 7 are respectively locked to the cabinet at or near the front end fixing member 5 and to the upper part of the chassis 4, the length of the string body 7 and when the chassis 4 is pulled out, The chassis 4 is rotated by the tension of the string body 7, and the transition from being drawn out to being rotated is automatically and reliably performed, resulting in good handling and operability.

When the chassis 4 is pulled out, when the length of the drawer becomes the length of the string body 7, the chassis 4 is about to be rotated. Even when the chassis 4 is pulled out, the center of gravity of the chassis 4 is not moved backwards, but is moved upwards, and even forwards. There is little risk and it is safe.

On the other hand, when placing the chassis 4 in the front of the cabinet, when the chassis 4 is placed in a vertical position behind the cabinet bottom 2 and returned to a horizontal position, the front end 17 of the chassis 4 is placed in front of the cabinet floor 2. It is automatically transferred and smoothly transferred to forward movement (insertion), and the workability and safety are also good.

Further, the front end fixing member 5 and the rear end fixing member 22 are provided on the fixed rail member 14, the front end locking member 29 is provided on the movable rail member 16, and the movable rail member 16 is made movable with respect to the fixed rail member 14. It becomes possible to store the rail member compactly and to draw out a large number of rail members.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway exploded perspective view of the first embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1 during assembly, and Figs. 3 to 6 are side views when assembled, showing the chassis. When fixed in place, Figure 4 shows when the chassis is pulled out approximately half way to the rear, Figure 5 shows when the chassis is fully pulled out to the rear, and Figure 6 shows the chassis after it is fully pulled out to the rear. It is a figure which shows each state when the rear end of is rotated approximately 90 degrees upward. 1 is the cabinet, 2 is the bottom, 4 is the chassis, 17 and 2
1 is the front end and rear end of the chassis, 5 is a chassis tip fixing member and one end fixing member of the string body 7, 22 is a chassis rear end fixing member, 29 is a chassis tip locking member, and 6 is the other end of the string body 7. It also serves as a fixing member and an upper support member for the front end of the chassis.

Claims (2)

[Scope of utility model registration request] (1) After fixing the chassis by inserting it from the back to the front along the bottom of the cabinet, and pulling out the chassis a predetermined amount from the front to the back along the bottom of the cabinet, push the rear end of the chassis upward about 90 degrees. ° A chassis fixing, drawing and rotating device that rotates and supports the chassis, the front end fixing member supporting the chassis at a fixed position on the bottom of the cabinet so that the front end of the chassis can be moved forward and backward along the bottom of the cabinet, and the front end a rear end fixing member that removably supports the rear end of the chassis with a fixing member such as a screw when the front end of the chassis is inserted into the fixing member; and a cabinet whose one end is at the front end fixing member or near the front end fixing member. a string having a predetermined length corresponding to the amount by which the chassis is pulled out rearward, the other end of which is locked above the chassis; Provided at the rear of the cabinet bottom surface, the front end portion of the chassis is moved rearward along the cabinet bottom surface and is supported so as to be accessible in and out when the rear end is lifted upward from the cabinet bottom surface and rotated approximately 90 degrees. a front end locking member; and a front end of the cabinet or the front end of the chassis such that when the front end of the chassis is inserted into the front end locking member, the front end abuts either the bottom of the cabinet or the upper front end of the chassis. A chassis fixing, drawer, and rotation device that is separated from a chassis front end upper support member that projects from the other side. (2) The front end fixing member and the rear end fixing member are provided at both ends of a first rail member that has a rail groove in the middle that allows the front end of the chassis to move in the front and back direction, and the front end locking member is provided on the first rail member. A second chassis is supported so as to be movable in the front-rear direction, and has a rail groove in the middle that allows the front end of the chassis to move in the front-rear direction.
The chassis fixing, drawing out, and rotation according to claim 1, wherein the second rail member is provided at the rear end of the rail member, and the second rail member is moved in the front and back direction in conjunction with the chassis. Device.