JPH0541577Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is a device for holding an operating door, etc., which is attached to a stationary body of a television receiver, a video deck, etc. so as to be openable and closable, in a closed position. This relates to a door lock mechanism.

BACKGROUND ART FIGS. 5 to 7 respectively relate to the structure of the door of the operation section in a conventional television receiver, and show the case where the operation section 2 is provided at the lower part of the main body 1.

The operating section 2 shown in FIG. 3 can be opened and closed by opening and closing the door 3 in the vertical direction.

The door 3 shown in FIGS. 5 to 7 above needs to be held in the closed position when the operator does not touch the operating section 2, so a door lock is provided to hold the door in the closed position. A mechanism is provided.

That is, the door 3 shown in the figure can be opened and closed from the closed position shown by the solid line in FIG. A hook member 4 provided at the upper end so as to protrude toward the operating section 2 is engaged with an engagement groove 6 formed in the top section 5 of the operating section 2 in the closed state shown by the solid line in FIG. As a result, the door 3 is held in the closed position shown in FIG. 7 unless the hook member 4 is intentionally released.

Problems with the prior art At the upper end of the door 3 as shown in FIG. 7 above,
The conventional mechanism in which the hook member 4 is formed requires an operation such as hooking a finger and pulling it open, and has a built-in drawback that the hook member 4 and the engagement groove 6 may wear out or break due to repeated opening and closing operations. was.

Purpose of the invention Therefore, the purpose of the invention is to make it possible to easily hold a door in the closed state by lightly pushing the door toward the closed state, and to open the door from the closed state. To provide a door lock mechanism which is easy to operate, requiring only a light push of the door, and which is durable and has good appearance and operability when touching an operating part.

Structure of the invention In order to achieve the above object, the main means adopted by the invention is a door lock for holding a door in a closed position, which is attached to a stationary main body so as to be openable and closable. The mechanism has a longitudinal elongated hole formed in the center and a pair of engaging protrusions at the diagonal ends, and is swingably attached to the main body via a horizontal pin inserted into the elongated hole. The rocking engaging element is provided on the door side and has a claw at its tip that engages with the engaging protrusion to hold the door in the closed position. The door lock mechanism includes an engaging element actuating member in which an engaging element receiving portion for receiving a dynamic engaging element is formed.

Operation When the door is opened, the swinging engager is supported by the horizontal pin and is suspended.

When the door is closed from this state, the engaging element operating member comes into contact with the side surface of the swinging engagement element, causing the swinging engagement element to rotate around the horizontal pin.

When the door is further pushed in the direction of the operating portion from this state, the engagement protrusion of the swinging engager passes over the claw, and eventually comes into contact with the upper surface of the engager actuating member.

The operator knows that he cannot push the door any further in this position and withdraws his hand from the door. Then, due to the door's own elastic properties,
Alternatively, the operator attempts to return to the opening direction by pulling the door himself. Therefore, the engaging element actuating member retreats in the opening direction, whereby the pawl engages with the engaging protrusion that is in contact with the upper surface of the engaging element actuating member, and the door cannot be opened any further, i.e., the door is locked. The state will be as follows.

To open a door which is thus locked in the closed position, the operator pushes the door towards the operating part. Then, the engaging element actuating member in the locked state advances in the closing direction, thereby the claws are separated from the engaging protrusions, and the swinging engaging element rotates around the horizontal pin by its own weight, causing the engaging element to actuate. It will be in a state where it is leaning against the top surface of the member. In this state, the engagement protrusion is completely separated from the claw.

In this state, the engaging protrusion is in contact with the upper surface of the engaging element actuating member, that is, the door is pushed in to the deepest position again. When the operator releases the door in this state, the engaging element is activated. The member retreats in the opening direction due to the elastic properties of the door, and the swinging engager becomes suspended in the engager receiving part, and as the door is further opened, it is pulled out from the engager receiving part. The engager actuating member is completely separated from the swinging engager, and the swinging engager returns to its initial state hanging from the horizontal pin.

Embodiments Next, embodiments embodying the present invention will be described with reference to FIGS. 1 to 4 to provide an understanding of the present invention. Here, FIG. 1 is a perspective view of the entire door lock mechanism according to an embodiment of the present invention, and FIGS. 2 a to 2 i show the movements of the swinging engager and the engager operating member to show the operation of the door lock mechanism. Schematic side view shown, 3rd
The figure is a side sectional view showing the contact state between the door and the main body in the same embodiment, and FIG. 4 is a sectional view taken along the line BB in FIG. 3.

Note that the same reference numerals are used for the same elements as those in the conventional example shown in FIGS. 5 to 7.

However, the following example is only one specific example of the present invention, and is not intended to limit the technical scope of the present invention.

As shown in FIG. 1, in the door lock mechanism according to this embodiment, an engager actuating member 10 is integrally molded with the door 3 at the upper end of the door 3 toward the operating section 2. As shown in FIG.

Further, when the door 3 is closed with respect to the main body 1 as shown by the solid line in FIG. 11. This operating member insertion groove 11 has a horizontal pin 12.
(horizontal pin) is fixed on both sides, and this pin 1
A swinging engager 13 is swingably attached to 2.

This swinging engager 13 will be explained in more detail with reference to FIG. It is formed in a right angle direction. still,
A part of the elongated hole is opened to the outside by a notch 15, but this is because a pin 14 is inserted into the elongated hole 14.
If the pin 12 can be fixed in the actuating member insertion groove 11 with the pin 12 inserted into the long hole 14, such a notch 15 is unnecessary, and the notch 15 is indicated by diagonal lines in Fig. 2a. As shown, it is also possible to mold the swinging engager 13 point-symmetrically.

Such a swinging engagement element 13 has engagement protrusions 16a and 1 at its diagonal ends, respectively, across the center thereof.
6b (both have the same shape) are molded to protrude.

Furthermore, a claw 17 is formed at the tip of the engaging element actuating member 10 to engage with the engaging protrusion 16a or 16b to hold the door 3 in a closed state. Swinging engager 13
An engaging element receiving part 18 is formed which is slightly wider than the above-mentioned claw 17 and can receive the swinging engaging element 13 that has fallen away from the claw 17 due to its own weight.

Further, as shown in FIG. 4, on the vertical wall surface 20 of the door opening 9 on the main body side to which the door 3 is attached, there is a stopper 21 for the closed position, which the side end of the door 3 comes into contact with.
21 and an abutment 22, with which the approximately central portion of the door 3 which is formed to be shorter than this abuts, are formed.

Next, the locking and unlocking operations of the door 3 in this embodiment will be explained with reference to FIGS. 1 and 2.

When the door 3 is opened as shown in FIG.
As shown in FIGS. 1 and 2a, the swinging engager 13 is supported by the pin 12 and is suspended.

When the door 3 is closed from the state shown in FIG. 2a, the engager actuating member 10 advances toward the side surface of the swinging engager 13 as shown by the arrow in FIG. 2a, Eventually, as shown in FIG.
Rotate it around 2.

When the door 3 is further pushed in the direction of the operating part 2 from this state, the engaging element operating member 10 is further pushed in the direction of the arrow, the engaging protrusion 16b of the swinging engaging element 13 overcomes the claw 17, and eventually As shown in FIG. 2c, the engaging protrusion 16b
It will come into contact with the top surface of.

The position of the door 3 in this state is shown by the two-dot chain line in FIG.
In addition to contacting the side closed position hits 21, 21,
The center part of door 3 is pushed further and hits 22,
22. In this way, the door 3 can flex due to its own elastic action, and the operator knows that he cannot push the door 3 further in this position, so he can withdraw his hand from the door 3. . Then, the door 3 tries to return to the position shown by the solid line in FIG. 4 due to its own elastic properties.

Therefore, the engager actuating member 10 retreats in the direction of the arrow shown in FIG. The door 3 can no longer be opened, ie, it is locked.

In order to open the door 3 which is thus locked in the closed position, the operator pushes the central portion of the door 3 in the direction of the operating part 2. Then, the engager actuating member 10, which was in the position shown in FIG. 2e, is moved to the position shown in FIG. 2f.
As shown in , the claw 17 advances in the direction shown by the arrow, and the claw 17 separates from the engaging protrusion 16b, and the swinging engager 13 rotates about the pin 12 in the direction shown by the arrow by its own weight. It will be in a state where it is leaning against the upper surface of the engaging element actuating member 10.

In this state, the engaging protrusion 16b is completely separated from the claw 17. Moreover, the door 3 has been pushed in again to the position shown by the broken line in FIG. 4, and when the operator releases his hand from the door 3 in this state, the engager actuating member 10 moves the door in the direction of the arrow shown in FIG. 2g. 3, the swinging engager 13 moves back due to the elastic properties of the engager receiving part 1.
When the door 3 is further opened, the engager actuating member 10 is pulled out from the engager receiving portion 18 as shown in FIG. 2i, the swinging engager 13 returns to the same state as the initial state shown in FIG. 2a, as shown in FIG. 2i.

In this way, since the swinging engager 13 is point symmetrical about the center point, the engaging protrusions 16a and 16b
Whichever is on top will have the same effect.

In the above embodiment, the door 3 changes from the state shown in FIG.
Engagement actuation member 10 in the position shown in Figures d and e
Furthermore, the engaging element actuating member is returned from the state shown in Fig. 2 f to the state shown in Fig. 2 g, but such action is performed by the operator's own pushing and pulling operations. It may also be carried out by
A helical spring (not shown) may be attached around the pin 4 shown in FIG. 3 so that the door 3 is always biased in the opening direction.

Effects of the invention As described above, the present invention provides a door lock mechanism for holding a door in a closed position, which is attached to a stationary main body so as to be openable and closable, in which a long hole in the longitudinal direction is formed in the center. It also has a pair of engagement protrusions on the diagonal ends, and a swinging engager that is swingably attached to the main body side via a horizontal pin inserted into the elongated hole, and a swinging engager that is provided on the door side. , a tip is provided with a pawl that engages with the engaging protrusion to hold the door in the closed position, and an engaging element receiving part is formed in the middle part to receive a swinging engaging element that falls away from the nail due to its own weight. Since the door lock mechanism is characterized by comprising an engager actuating member,
To close or open the door, simply push the door in with moderate force. Door opening/closing operations become extremely easy. Furthermore, since there are almost no worn parts, a longer service life can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the entire door lock mechanism according to an embodiment of the present invention, and FIGS. 2 a to 2 are schematic diagrams showing the movements of the swinging engager and the engager operating member to illustrate the operation of the door lock mechanism. A side view, FIG. 3 is a side sectional view showing the contact state of the door and main body in the same embodiment,
Figure 4 is a sectional view taken along the line B-B in Figure 3;
The figure is a front view of a conventional television receiver, FIG. 6 is a perspective view of the television receiver with the door open, and FIG. 7 is a front view of a conventional television receiver.
It is a sectional view taken along arrow A'. Explanation of symbols, 1...Main body, 2...Operation unit, 3...
... Door, 10 ... Engagement element actuation member, 11 ... Actuation member insertion groove, 12 ... Pin (horizontal pin), 13 ...
...Swinging engager, 14...Elongated hole, 16a, 16b...
...Engagement protrusion, 17...Claw, 18...Engager receiving portion, 21...Closed position hit, 22...Touch.

Claims (1)

[Claims for Utility Model Registration] In a door lock mechanism for holding a door attached to a stationary main body so as to be openable and closable in a closed position, a long hole in the longitudinal direction is formed in the center, and a hole in the diagonal direction is formed in the center. A swinging engager is provided with a pair of engagement protrusions at the end and is swingably attached to the main body side via a horizontal pin inserted into the elongated hole; an engaging element actuating member comprising a pawl that engages with the mating protrusion to hold the door in a closed position, and an engaging element receiving part formed in the intermediate portion to receive a swinging engaging element that falls away from the pawl due to its own weight; A door lock mechanism characterized by comprising: