JPH0321588Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push latch device for opening and closing a door or cover attached to an audio rack, box, or the like.

In order to open or close a door or a lid attached to an audio rack, a box, etc., push-latch devices are already known, in which the door or the like is pushed to lock it, and then pushed again to release the lock and open the door. This means, for example, that a slider that is slidably inserted into a case that is open at one end and is spring-biased outward from the case is spring-biased from the inside to the outside on one side of the case. The ball is inserted into a case, and an endless guide groove for the ball is formed on the inner surface of the case corresponding to the side surface.

This push latch device changes the fixed position of the slider in two stages by moving the ball on the side surface of the slider in a fixed direction through a guide groove that has a substantially V-shaped locking part in the opposing case. It is something. Therefore, in this configuration, since the ball is urged outward from inside the slider by a spring and moves in the guide groove of the case, it is difficult to determine the direction of movement of the ball. In addition, the bottom of the guide groove must be undulated in a complicated manner, and a spring is required to bias the ball, which increases the number of components. As a result, frictional resistance increases, resulting in poor operation and the need for a lubricant such as grease, which is a cause of increased costs and an obstacle to downsizing the push latch device as a whole.

An object of the present invention is to solve the above-mentioned problems by configuring the guide piece of the guide lever to reciprocate in the same direction as the guide groove and to be biased only in the same direction.

The push latch device of the present invention includes a slider that is inserted into a case that is open at one end so as to be able to slide in and out of the case, and is biased by a spring on the outside of the case. A guide groove having a substantially V-shaped locking portion is provided on the inner surface, and a guide lever that can engage with the locking portion is arranged on the side of the slider facing the guide groove, and when the slider is pushed, the inside of the case is moved. In the push latch device, the lock is released when the slider is locked in one position and the slider is pushed again.A guide lever attached to the slider raises a guide piece above the distal end of the arm, and a guide piece below the base end of the arm. A supporting shaft with a bearing surface set diagonally with respect to the longitudinal center line of the arm is protruded, and is provided at an appropriate position on the case at right angles and diagonally with respect to the longitudinal center line of the arm. The gist is that it is pressed by associating it with a pressing spring.

An example of the present invention will be described based on the drawings.
In the figure, 1 indicates a push-latch device, which is
A synthetic resin case 2 that has a hollow box shape and is open on one side, and a synthetic resin that has one end inserted into the case 2, the other end separated into forks, and a hook 4 provided on the opposite inner side. The slider 3 includes a slider 3 made of aluminum and a guide lever 5 provided on the side surface of the slider 3 between the slider 3 and the case 2, and the slider 3 is biased by a spring 6 toward the opening of the case 2. The case 2 has an endless guide groove 7 on the inner surface facing the guide lever 5, and the guide groove 7 slopes from the front side of the case 2 to the rear end of the other side. Further, a back part 7b of the guide groove 7 which is bent and continuous from the back end is formed on the inside side of the case 2 from the opening side part 7a, and the end of the back part 7b is connected to the opening. Continuing from the base end of the side portion 7a, the guide groove 7 as a whole can be rotated endlessly. Inner part 7b of guide groove 7
A substantially V-shaped locking portion 8 that is once bent toward the opening side of the case 2 is formed near the center of the case 2, and is capable of locking a guide piece of a guide lever, which will be described later. The vicinity of the end of the back portion 7b has an angle that is gradually inclined from the exit of the locking portion 8 toward the opening side of the case 2.
b and the base end of the opening side portion 7a are continuous, and the groove depth of the guide groove 7 is formed to be the same depth all around.

The guide lever 5 attached to the slider 3 has a guide piece 10 that is loosely fitted into the guide groove 7 above the tip of the arm 9, and a support shaft 11 that extends the length of the arm 9 below the base end of the arm 9. It is provided perpendicular to the direction. The support shaft 11 is formed with a receiving surface 12 that is flat in the axial direction on the opposite side of the arm 9 with respect to the axis thereof, and the receiving surface 12 is formed in the longitudinal direction of the arm 9 as shown in FIG. As shown, it has an angle of approximately 72 degrees, and this receiving surface 12 is provided on the opening side of the case 2 when it is inserted into the slider 3 as described later.

The slider 3 is provided with a fan-shaped accommodating portion 13 for the arm 9 on the side facing the guide groove 7, with the base facing the case opening side, and a support into which the support shaft 11 of the guide lever 5 is inserted. Hole 14
is formed in the penetrating direction of the slider 3, and the case opening side of the support hole 14 is a flat surface perpendicular to the moving direction of the slider 3, that is, a flat support surface 15 that conforms to the receiving surface 12 of the guide lever 5. There is.

The slider 3 to which the guide lever 5 is attached is fitted into the case 2 with the slider 3 being urged outward by a spring 6 that is installed upright from the back wall of the case 2.
Connect the protrusion 16 on the side of the slider 3 to the elongated hole 1 of the case 2.
7 to prevent the slider 3 from coming off.
Moreover, the slider 3 is allowed to reciprocate through the long hole 17. One end of the spring 6 is in contact with the support shaft 11 of the guide lever 5.
is subjected to pressure, and the slider 3 is pressed against the case 2.
Even when located on the opening side, the support shaft 11
is biased by a spring 6. When the slider 3 is on the opening side of the case 2, the guide piece 10 of the guide lever 5
is the proximal end A' of the guide groove 7 on the opening side of the case 2, which is slightly advanced in the moving direction of the guide piece 10 in the direction indicated by the arrow D in FIG.
It is set at the base end A' which is outside the groove width of the guide groove 7 formed from position C of b in the direction of position A of the opening side portion 7a. This is because in this embodiment, as mentioned above, the receiving surface 12 of the guide lever 5 has an angle of approximately 72 degrees, and the spring 6 urges the support shaft 11, so that the guide piece 10 The position is eccentrically set to the base end A' which is outward from the exit position of the locking portion 8 in a direction perpendicular to the center line in the slider movement direction. Therefore, when the slider 3 is pushed in, the guide piece 10 moves only in the direction of arrow D, and can be prevented from moving backward.

This push latch device is attached to the opening of a box such as an audio rack with the hook 4 facing the lid 18. The lid 18 has an engaging projection 19 adapted to the shape of the hook 4, for example, an arrow-shaped projection as shown in FIG. 2, which is fitted with the hook 4 to open and close the lid 18. It is something to do. That is, when closing the lid 18, when the slider 3 is pushed together with the lid 18 against the spring 6 inside the case 2, the slider 3 moves inside the case 2. At this time, since the slider 3 and the support shaft 11 are urged outward by the spring 6, the receiving surface 12 of the support shaft 11 and the support surface 15 of the slider 3 are in close contact with each other on the entire surface when the guide piece 10 is in the non-pressurized state. As described above, the guide piece 10 of the guide lever 5 is located at the opening side portion 7a of the guide groove 7, and extends from the proximal end A' in the direction of movement from the position A of the guide groove 7 on the side closer to the opening. is set to .
Therefore, as the slider 3 moves, the guide piece 10 receives pressure in the width direction of the case 2 by the side wall of the opening side portion 7a according to the inclination of the guide groove 7, and the arm 9 moves the support shaft 11. Center slider 3
move toward the center line. Further, when the slider 3 is continued to be pressed, the guide piece 10 moves into the guide groove 7.
The opening side portion 7a moves the entire distance, collides with the diffraction part B of the guide groove 7, and stops. Therefore, the slider 3 also stops, but in this state, the receiving surface 12 of the support shaft 11 and the support surface 15 of the slider 3 are open on the position A side, and the spring 6 presses the support shaft 11. Therefore, the support shaft 11 receives a rotational moment in the direction of closing the open state, and the guide piece 10 is urged inward in the width direction of the case 2. When the operator removes the force pressing the lid 16, the guide piece 1
Since the beam 0 is biased as described above, it is repelled from the diffraction section B and moves to the inner part 7b of the guide groove 7. Since the slider 3 is urged outward from the case 2 by the spring 6, it moves outward from the case 2. At the same time, the guide piece 10 in the guide groove 7
collides with the wall of the locking part 8 and becomes locked. Therefore, the slider 3 is fixed in the inserted position inside the case 2, so that the lid 18 can be closed. That is, when the slider 3 is projected, the distance between the hooks 4, 4 is made larger than the width of the engagement protrusion 19 of the lid 18, and when the slider 3 is housed in the case 2, the side wall of the case 2 allows the hook 4 to be , 4 are pressed, the distance between them is reduced, and the engagement protrusion 19 is set to be clamped.
This ensures that the lid 18 is in a closed state. In this embodiment, a hook 4 is formed and the hook 4 is
Although the lid 18 is opened and closed using the engaging protrusion 19, a permanent magnet or the like is used at the tip of the slider 3. The lid 18 may be opened and closed with a structure in which an iron piece or the like is fixed to the lid 18 side.

Conversely, when opening the closed lid 18, the slider 3 is pushed together with the lid 18 again. Then, since the neutral position of the guide piece 10 is further outward in the width direction of the case 2 than the exit of the locking part 8,
The slider 3 remains biased in the direction perpendicular to the direction of movement, escapes from the locking part 8 of the guide groove 7, and moves to the second position.
It is repelled downward in the figure and passes through the exit of the locking part 8. However, the guide piece 10
The slider 3 only moves to the position A'' on the inside of the case, which corresponds to A', but at this time, when the operator removes the pressing force, the slider 3 moves outward by the spring 6, so the slider 3 moves outward at the same time. The guide piece 10 of A'' is set in the inner part 7b of the guide groove 7 so as to be inclined outward in the width direction of the case 2, and moves in a continuous groove outward along the inclination. In this state, guide piece 1
0 moves while maintaining an inward biasing force in the width direction of the case 2 by the receiving surface 12 and the supporting surface 15 of the support shaft 11, that is, a biasing force in the opposite direction to the biasing force of the arm 9 described above. After passing through the groove, when moving to the opening side portion 7a of the guide groove 7, the guide piece 10 is at position A.
As the slider 3 moves toward the base end A', the protrusion 16 of the slider 3 is engaged with the end of the elongated hole 17 of the case 2, and the slider 3 is stopped. Therefore, the hook 4 at the tip of the slider 3 opens the engagement protrusion 19 of the lid 18, and the lid 18 is opened. This operation is repeated when the lid 18 is opened and closed again, and the guide piece 10 is initially placed at the base end of the opening side portion 7a of the guide groove 7.
Since the guide lever 5 is located at A', it always moves only in the direction of the arrow D, and does not move backward, thereby ensuring complete operation of the guide lever 5.

In this embodiment, the guide groove 7 has the same groove depth over the entire circumference, but by forming the opening side part 7a deep and conversely forming the back side part 7b shallow, the movement of the guide piece 10 is improved. It is also possible to ensure movement in the direction of arrow D in FIG. In this case, the bottom of the guide groove 7 from position C to position A can be made optional, such as by sloping it and providing a step on the opening side, as shown in FIG. It is easy to set the position of the guide piece 10 at the tip of the guide piece 5.

FIG. 6 shows a guide lever 5 according to another embodiment of the present invention, in which the receiving surface 12 formed on the support shaft 11 of the guide lever 5 was formed on the opening side of the case 2 in the above-mentioned embodiment. However, if this is reversed, case 2
It is provided on the back side, and the spring 6 is in contact with the receiving surface 12. In this embodiment, the force of the spring 6 acting on the bearing surface 12 is stronger at a position eccentric from the axial position of the spring 6 with respect to the inclination of the bearing surface 12 that changes with the movement of the arm 9 due to the movement of the slider 3. Since the force acts strongly on the receiving surface, it can effectively act as a force for correcting the inclination of the receiving surface 12.

Incidentally, when fixing the case 2 to an audio rack or the like, it is possible to form a locking piece 20 on the outer wall of the case 2 and fix it as desired.

Since the push latch device of the present invention has the above-described structure, the number of parts can be reduced compared to the conventional device, making it possible to downsize and reduce costs. The guide lever for changing the position of the slider has a component arm that reciprocates in the same direction as the guide groove forming surface.
Not only can the guide groove be moved reliably, but the guide piece is also biased in the same direction.
Another feature is that the guide piece collides with the side wall of the guide groove at the diffraction part of the guide groove, and the operator can use the device while confirming its operation by hearing the sound and shock.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view with the lid open, FIG. 2 is a front view with the lid closed, FIG. 3 is a cross-sectional view of the center of FIG. 2, and FIG. 4 is a front view with the lid open. is a front view of the slider, Figures 5a and b are plan views and front views of the guide lever, respectively, and Figure 5c is B of Figure 5b.
-B sectional view, FIGS. 6a and 6b are plan views and front views of the guide lever in other embodiments, FIG. FIG. 2 is a partial cross-sectional view of the case taken along line A-A in FIG. 1; 1: Push latch device, 2: Case, 3: Slider, 5: Guide lever, 6: Spring, 7: Guide groove, 8: Locking part, 9: Arm, 10: Guide piece, 1
1: Support shaft, 12: Reception surface.

Claims (1)

[Claims for Utility Model Registration] (1) A slider is provided that is slidably inserted in the inner and outer directions of the case with one end open and is biased by a spring toward the outside of the case. A guide groove having a substantially V-shaped locking portion is provided on the inner surface of the opposing case, and a guide lever capable of engaging with the locking portion is arranged on the side surface of the slider facing the guide groove, and the guide lever is arranged to engage with the locking portion. In the push latch device, when the slider is pushed, it locks at a position inside the case, and when the slider is pushed again, the lock is released.In the push latch device, a guide lever attached to the slider raises a guide piece above the distal end of the arm, and moves the guide piece downward from the proximal end. A supporting shaft having a bearing surface set diagonally with respect to the longitudinal center line of the arm is provided protrudingly from the case, and the support shaft is protruded from the case in a perpendicular direction and obliquely with respect to the longitudinal center line of the arm. A push latch device characterized by being pressed by a push spring provided at an appropriate location. (2) The push latch device according to claim 1, wherein the bearing surface of the support shaft is set at an angle of approximately 72 degrees with respect to the longitudinal center line of the arm. (3) The push latch device according to claim 1 or 2, wherein the receiving surface of the support shaft is formed on the opening side of the case. (4) The push latch device according to claim 1 or 2, wherein the receiving surface of the support shaft is formed on the back side of the case.