JPH0545733Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is useful for opening and closing doors without handles, or for removing relatively lightweight objects such as TV channel remote controls after they have been stored in a predetermined position. When the rotation control knob connected to the rotation control shaft of an electrical rotation control device such as a volume is located in the opening of the operation panel of electric/electronic equipment, etc., the front surface of the rotation operation knob and the operation panel are closed. When operating the rotary operation knob, press the door, object, or rotary operation knob in one direction, such as when the rotary operation knob protrudes from the surface of the operation panel. A locking mechanism is used to extend them to a convenient position for opening, closing, and retrieval operations with a single action.
In addition to release devices, this invention relates to lock/release devices that can be used in pushbutton switches that can be switched simply by pressing the button.

(Prior Art) Conventionally, a lock consists of a roughly heart-shaped cam that locks when pressed and releases the lock when pressed further and returns to the previous position, and a protrusion that slides along the cam. As a release device, there is one described in the specification of Utility Model Application No. 132218/1987, which was previously filed by the present applicant.

This will be explained with reference to FIG. 10, which shows an embodiment of the present invention. It consists of a substantially heart-shaped cam 1 and a sliding protrusion 2 that is engaged with the cam 1. It is engaged once it is pushed, and cannot be pushed again. In the locking/releasing device, one of the cam 1 or the sliding protrusion 2 is fixed, and the other is provided on the slide plate 3 (in Fig. 10, the sliding protrusion 2 is fixed and the cam 1 is fixed). ) and is provided so as to be slidable from side to side on a slider 5 which is provided so as to be slidable back and forth within the case 4, and slopes 6 having opposite directions are provided at the front and rear of the sliding protrusion 2; A circulation path through which the sliding projection 2 can move in only one direction is formed by a substantially heart-shaped central protrusion 7 having a contour that determines the course of the cam 1 by contacting the outer periphery of the sliding projection 2, and an edge portion 8. A slope 10 is formed on the upper surface of the circulation passage 9.
11 and steps 13 and 14 are formed by alternately combining them,
A part of the slide plate 3 is made thin so that the slide plate 3 is elastically deformed and generates sound when passing through the stepped portion,
During operation, it was possible to confirm when the lock is locked or released by making an operating sound.

(Problem to be solved by the invention) However, in this case, the sliding protrusion 2 is
It has a trapezoidal shape with slopes 6 facing in opposite directions at the front and rear of the cam 1, and the outer peripheral portion consisting of the side wall surface and edge of the sliding protrusion 2 is the guide slope (side wall surface) 15 of the cam 1.
16, and there is a position recovery mechanism on the outer side of the end of the circulation passage 9 to return the sliding protrusion 2 closer to the inclined part 18 than the rear end 17 of the central raised part 7. Since it was necessary to provide a guide protrusion 19 for the purpose of sliding, and an elastic locking piece 12 was provided diagonally upward at the end of the circulation passage 9 to prevent the sliding protrusion 2 from returning. The structure of the plate 3 is complicated, and the mold structure is complicated, resulting in a disadvantage that the cost of the mold increases.

In addition, when performing the release operation, the sliding protrusion 2 will be released and no sound will be produced until all of the sliding protrusions 2 have gone over the slope and reached the step after starting to climb up the slope, so the release throat talk will be longer and the amount of push will be longer. If there is not enough power, it may not be released or the sound when it is released may be delayed, which may irritate the operator.

The present invention improves the above-mentioned drawbacks of conventional locking/releasing devices, has a simplified structure, facilitates mold production, reduces mold costs, and shortens the release stroke. To provide a locking/releasing device with excellent operation feeling in which the sound of unlocking can be immediately heard.

(Means for Solving the Problems) The present invention employs the following configuration to achieve its purpose.

In other words, it consists of a roughly heart-shaped cam and a sliding protrusion that is locked to the cam, and once pressed, it locks.
In a lock/release device that can be unlocked by pressing it again, one of the cams or sliding protrusions is fixed, and the other is mounted on a slide plate that is slidable back and forth within the case. A substantially heart-shaped center having a contour that allows the cam to slide left and right, and has inclined surfaces facing in the same direction at the front and rear of the sliding projection, and determines the course of the cam by contacting the outer periphery of the sliding projection. A circulation passage is formed along the protrusion, and the direction of the slope of the sliding protrusion is the same as the direction of the inclined part that first contacts the sliding protrusion of the central protrusion during locking operation. The upper surface is formed with an alternating combination of slopes and steps, and the step is formed along an extension line of the slope at the end of the circulation passage, and a part of the slide plate is made thin so that the sliding protrusion is formed. The structure of the cam is simplified by forming the slide plate so that it elastically deforms and makes a sound when it passes through the stepped portion, and furthermore, the locking portion of the central raised portion is attached to the end surface of the sliding projection. By providing an inclination that matches the inclination of the slope provided on the upper surface of the circulation passage along the release stroke, the release stroke is shortened and the operating feeling is improved.

(Function) Since the present invention has the above-described configuration, slopes are provided in the same direction before and after the sliding projection, and the cam has a slope that is oriented in the same direction as that of the slope with which the sliding projection of the central raised portion first comes into contact. Since the slopes of the sliding protrusions are formed in the same direction, and the upper surface of the circulation passage is formed with an alternating combination of slopes and step plates, the circulation passage does not require an edge, and the circulation passage By forming the step along the extension line of the sloping portion at the end of the central protrusion, the sloping portion can be naturally formed by the step without having to move the sliding protrusion back toward the sloping portion from the rear end of the central ridge. Since the sliding projection is guided toward the cam, there is no need for a guide projection for position recovery, and there is no need for an elastic locking piece at the end of the circulation path to prevent the sliding projection from returning, making the cam structure simple. Can be done.

Furthermore, since the end surface of the sliding projection is sloped along the locking portion where the sliding projection is locked when locked, in accordance with the slope of the slope provided on the upper surface of the circulation passage, the sliding projection is locked. Since the sliding protrusion is already on the slope when it is locked in the
The stroke when releasing can be shortened.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Figure 1 shows the first example in which the present invention is applied to a door locking device.
It is an exploded perspective view showing an example. 2 and 3 are explanatory diagrams showing a part of the case in cross section showing the usage state of the first embodiment of the present invention. FIG. 2 shows the released state before locking, and FIG. indicates a locked state. 4 to 6 are cross-sectional views showing the usage state of the first embodiment of the present invention, and FIG.
An explanatory diagram of the main parts of the A' cross section, Figure 5 is B- in Figure 3.
FIG. 6 is a cross-sectional view taken along the line C-C' in FIG. 3 (only the slide plate is not broken).
As shown in FIG. 1, the door locking device of the first embodiment to which the present invention is applied consists of a case 4 with one end open.
, a pair of elastic arms 21 extending forward that can grip a strike 20 fixed to the back of the door, etc., and a mover 5 which is housed inside the case 4 so as to be slidable back and forth, and the case 4. A compression spring 24 is fitted between a spring seat 22 provided at the rear of the slider 5 and a spring seat 23 provided on the slider 5, and a cam 2 to be described later.
A slide plate 27 is provided between one inner surface 26 of the case 4 facing the inner surface 26 of the case 4 and the slider 5, and a slide plate 27 that slides left and right on the inner surface 26 side of the slider 5, and a slide plate 27 that slides inwardly toward the one inner surface 26 of the case 4. Sliding protrusion 2 fixed with
It consists of 8. The case 4 is a rectangular tube with an opening 29 at one end in the axial direction and a closed end 30. The opening 29 widens in the width direction to accommodate the elastic arm 21, and the outside thereof is an opening 29. The widening portion ends by forming a step portion 31 extending toward the rear end in the direction. At a portion following the stepped portion 31, an elastic locking piece 32 projects outward at an appropriate distance. The inner surface 33 of the case 4, which faces one inner surface 26, has a guide groove 34 for guiding the slider 5 back and forth, and the slider 5 is prevented from jumping out of the case 4 by the repulsive force of the compression spring 24. A locking step 36 is provided for locking a stopper 35 provided on the mover 5, which will be described later. The sliding protrusion 28 provided on one inner surface 26 of the case 4 is a parallelogram with slopes 6 facing the same direction at the front and back, and the base of the parallelogram is parallel to the longitudinal direction of the case 4. It is formed like this. The mover 5 is provided with a stopper 35 that slides in the guide groove 34 provided in the case 4 and is locked by the locking step 36 at the rear of the surface opposite to the inner surface 26 side, and A linear guide groove 37 is provided on one inner surface 26 side in the left-right direction (direction perpendicular to the longitudinal direction of the case 4), and side walls 38 are partially provided on the left and right ends to prevent the slide plate 27 from being attached during assembly. This prevents the device from sliding off to the left or right and falling when placed on it, increasing the efficiency of assembly work. The slide plate 27 is formed into a plate shape, and has a guide groove 37 provided in the slider 5 on the lower surface.
In the center of the upper surface, there is a guide slope 15 consisting of two serrated peaks and one trough on the front side, and from the two peaks on the front side to the rear end. 17 is provided, and around this central raised part 7 there are slopes 10, 40, 41 and a step 1 on the upper surface along the heart shape.
3, 42, 43 are formed by alternately combining them, and a unidirectional circulation passage 9 is formed with a guide protrusion 50 formed therein to reliably guide the sliding protrusion 28 to the locking portion 46. ing. Among the side wall surfaces connecting the peak of the central protrusion 7 and the rear end 17, the inclined part 45 contacts the sliding protrusion 28 first during the lock operation.
The direction of the inclination is the same as the direction of the slope 6 of the sliding projection 28, and the step 43 provided at the end of the circulation passage 9 is formed on the extension line of the slope 45, so that the sliding connection can be achieved. This prevents the protrusion 28 from moving back.
A slope 40 on the upper surface of the circulation passage 9 is provided along a locking portion 46 (see FIG. 3) sandwiched between the two peaks of the central raised portion 7, and the sliding protrusion 28 is aligned with the slope of the slope 40. The end face is sloped. Further, on the lower surface of the slide plate 27, as shown in FIG. , when a pressing force is applied to the slopes 10, 40, 41, the protrusion 39 moves against the guide groove 37.
can now be moved downward.

Next, the usage state of the door locking tool of the first embodiment will be explained using FIGS. 2 to 6. As shown in FIG. 2, the door locking tool of the first embodiment is inserted into a hole 47 provided on the front side of a box such as a cabinet, and a projection 48 inside the hole 47 is connected to an elastic locking piece. 32
are engaged and fixed. On the other hand, a strike 20 is provided on the door so as to protrude from the door, facing the locking tool of the door. The elastic arm 21 is opened in a figure eight shape outside the opening 29 and is prepared for the entry of the strike 20.

In this state, when the strike 20 is pushed forward (when attempting to close the door), the tip of the strike 20 comes into contact with the head tip 49 of the slider 5, and due to the pushing, the slider 5 compresses the compression spring 24. The two elastic arms 21 that were open outside the opening 29 of the case 4 are deformed in the direction of closing at the edge of the opening 29, and the strike 20 is pushed into the back of the case 4. You will have to grasp it. Also, when the slider 5 is pushed deep into the case 4, the slide plate 2 on the slider 5
7 is also pushed inward, and the sliding protrusion 28 is guided by the step 43 of the slide plate 27 and comes into contact with the inclined part 45 of the central raised part 7, and eventually the guide protrusion 5
The sliding protrusion 28 reaches point a at 0. At this time, as shown in FIG. 4, the sliding protrusion 28 moving toward point a rides on the upward slope 10, but the sliding protrusion 28 continues to press against the slope 10 and presses the slope 10. The slidable slide plate 27 has a protrusion 39
is elastically deformed so as to sink deeply into the guide groove 37.
Eventually, when the sliding protrusion 28 reaches the step 13,
The pressing state between the sliding protrusion 28 and the top surface of the slide plate 27 is released, and the slide plate 27, which had been elastically deformed, is elastically restored, and the reaction at that time causes the top surface of the central protuberance 7 to move against the inner surface of one of the cases 4. 26
It hits and makes a sound. When you stop pushing the strike 20 after confirming this sound, the slider 5 is moved toward the opening 29 by the repulsive force of the compression spring 24, and along with this, the slide plate 27
is also moved toward the opening 29, but the guide protrusion 50 ensures that the sliding protrusion 28 moves toward the step 13.
The guide slope 15 of the central raised portion 7 is returned along the step 13 from point b to point c to point c, that is, the locking portion 46 is reached and locked (see FIG. 2). In this state, the sliding protrusion 28 is locked against the repulsive force of the compression spring 24 at point c, that is, the locking portion 46, on the guide slope 15 of the central raised portion 7, and the elastic arm 21 of the slider 5 strikes. 20 while maintaining the grip.
The door will remain closed. In this state, even if a force is applied that pulls the door outward by mistake, the sliding protrusion 28 has sufficient rigidity because it is integrally fixed to the case 4, so that it cannot be moved. Reliable rigidity can be maintained without deformation of the parts. In addition, in this state, as shown in FIG.
The end surface of is in contact with (riding on) the slope 40 of the circulation passage 9 provided along the locking part 46, but since the slope 40 and the end surface of the sliding protrusion 28 have the same slope, No pressing force is applied to the slope 40, so there is no fear of creep deformation even if the slope 40 is locked for a long period of time.

Next, when opening the door, press the surface of the door again, and the strike 20 will push the mover 5 deep into the case 4 again, and the slide plate 27 will also be pushed deep. Then, the lock is released and the door can be opened. That is, the sliding protrusion 28 first climbs over the slope 40 of the circulation passage 9 from the C point of the guide slope 15, that is, the locking part 46, and reaches the step 42, and then, when the door is stopped pressing, the repulsive force of the compression spring 21 Then, the slider 5 is moved toward the opening 29 again, and the sliding protrusion 28 moves along the guide slope 15 to point d, and then moves along the central raised part 7 to the inclined part 45 at the end of the circulation passage 9. When it reaches a step 43 provided along the extension line, it will eventually reach the state shown in FIG. 2, and will be ready for the next locking operation. During this operation, when the sliding protrusion 28 climbs over the slope 40 of the circulation passage 9 from point c of the guide slope 15, if the slide plate 27 further climbs onto the slope 40 from the state shown in FIG. The guide groove 37 is elastically deformed so as to enter deeply, and the sliding protrusion 28 moves into the step 4.
2, the slide plate 27, which had been elastically deformed, is elastically restored, and the upper surface of the central raised portion 7 hits one of the inner surfaces 26 of the case 4 due to the reaction at that time, producing a sound. In other words, this sound confirms that the lock has been released. When the sliding protrusion 28 climbs over the slope 40, it is in the locked state and the end face of the sliding projection 28 is already on the slope 40, so the distance (stroke) it takes to climb over the slope 40 and reach the step 42 is Since the time can be shortened, the lock can be released with just a little pressure, and the release sound is immediately heard, allowing for reliable operation and an excellent operating feel.

The present invention is applicable not only to a door locking device as in the first embodiment, but also to a push-button rotary knob, a remote control storage device, a push-button switch, and the like.

Further, in the first embodiment, the sliding protrusion is fixed and the heart-shaped cam is slid in the left and right direction, but in the present invention, on the contrary, the heart-shaped cam is fixed,
There is no problem even if the sliding protrusion slides. An example will be described in which the present invention is applied to a sliding holding device attached to the rear part of a remote control storage case shown in FIGS. 7, 8, and 9. FIG. 7 is a partially broken exploded perspective view of the sliding holding device, FIG. 8 is an explanatory view showing the sliding holding device attached to the rear part of the storage case, and FIG. 9 is an exploded perspective view of the sliding holding device. FIG. 3 is a cross-sectional view of a main part illustrating the state of elastic deformation of the slide plate when the dynamic holding device is used.

A circulation system in which slopes 10, 40, 41 and steps 13, 42, 43 are formed in an alternating combination on the inner surface 52 of the box body 51, and a guide piece 50 is formed to reliably guide the sliding protrusion 28 to the locking part 46. A substantially heart-shaped cam 25 having a passage 9 is provided, and a mover 5 that slides back and forth within the box body 51 is fitted into the box body 51.
A compression spring 24 is fitted between a spring seat 53 provided at the rear of the box body 51 and a spring seat 54 provided on the slider 5, and a compression spring 24 is fitted between the inner surface 52 of the box body 51 and the slider 5. A slide plate 27 with protrusions 28 protruding from the inner surface 52 side is interposed, and guide grooves 37 are provided on the left and right sides of the inner surface 52 of the slider 5, and inner wall surfaces 52 are provided at the four corners.
The slide plate 27 is provided with a protrusion 39 that slides in the guide groove 37. A stopper 57 is provided in a protruding manner to lock the movable member 5 to a locking step 56 provided on the box body 51 so that the slider 5 does not fly out. The slide plate 16, as shown in FIG.
A thin wall portion is formed at the front and rear of the protrusion 39, and the protrusion 39 is provided with a gap downward relative to the guide protrusion 37, so that when a pressing force is applied to the sliding protrusion 28 (sliding When the protrusion 28 rides on the slope 10), the slide plate 27 is elastically deformed so that the protrusion 39 moves upward with respect to the guide groove 37, and when it eventually reaches a step, it elastically restores its shape. Due to the reaction, the sliding protrusion 28 slides onto the upper surface of the circulation passage 9 (the box body 5
When it hits the inner surface 52) of 1, it makes a sound.

This sliding holding device holds the remote control 59 in the storage case 44 by sliding the remote control contact portion 58 provided on the head of the mover 3 as the mover 5 slides in the front-rear direction. It can be stored inside or extended to the front for convenient removal.

In the sliding holding device of the second embodiment, only the slide plate 27 having the sliding protrusion 28 that needs to have strength is molded from strong synthetic resin, and the other parts are molded from general-purpose synthetic resin. Since the amount of resin required for the slide plate 27 is small, the overall cost can be reduced compared to that of the first embodiment in which the sliding protrusion 28 is fixed.

(Effects) Since the present invention is configured as described above,
This produces the following effects.

In the locking/releasing device of claim 1, the structure of the cam is simplified because the edge portion, the guide protrusion for position recovery, and the elastic locking piece at the end of the circulation passage, which were conventionally necessary for the cam part, are no longer required. can be,
Mold production can be facilitated and mold costs can be reduced.

In the lock/release device of claim 2, since the stroke at the time of unlocking can be shortened, the unlocking operation can be performed reliably, and since the unlocking sound can be heard immediately, the operator does not get irritated, and the operation feeling is excellent. There is.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention. 2 and 3 are explanatory diagrams showing a part of the case in cross section showing the usage state of the first embodiment of the present invention. FIG. 2 shows the released state before locking, and FIG. indicates a locked state. 4 to 6 are sectional views showing the state of use of the first embodiment of the present invention, and FIG.
5 is an explanatory view of the main part taken along the line B-B' in FIG. 3, and FIG. 6 is a cross-sectional view taken along the line C-C' in FIG. 3 (only the slide plate is not broken). Figure 7 is. 9 is an exploded perspective view showing a second embodiment of the present invention, FIG. 8 is an explanatory view showing the sliding holding device of FIG. 7 attached to the rear part of the storage case, and FIG. FIG. 3 is a cross-sectional view of a main part of the sliding holding device shown in the figure for explaining elastic deformation of the slide plate in a used state. FIG. 10 is an exploded perspective view showing an embodiment of a conventional lock/release device. 2 and 28 are sliding projections, 3 and 27 are slide plates, 4 is a case, 5 is a slider, 6 is a slope of the sliding projection, 7 is a central raised portion, 9 is a circulation passage, 10, 4
0, 41 are uphill slopes, 13, 42, 43 are steps,
15 is a guide slope of the raised part, 17 is the rear end of the raised part,
20 is a strike; 22, 23, 53, and 54 are spring seats; 24 is a compression spring; 25 is a cam having a step at the end of the circulation passage along an extended line of the slope;
6, 52 is one inner surface of the case, 29 is an opening,
35, 57 are stoppers, 36, 56 are locking stages, 3
7 is a guide groove, 39 is a protrusion, 45 is an inclined portion, 50
51 is a guide protrusion, and 51 is a box body.

Claims (1)

[Claims for Utility Model Registration] (1) A locking/releasing device consisting of a substantially heart-shaped cam and a sliding protrusion that is locked to the cam, which locks when pushed once and releases when pressed once more. In this case, one of the cam or the sliding protrusion is fixed, and the other is provided on the slide plate so as to be slidable left and right on a slider that is provided so as to be slidable back and forth in the case, and the cam or the sliding protrusion is fixed, and the other is provided so as to be slidable from side to side on a slider that is provided so as to be slidable back and forth in the case. are provided with inclined surfaces having the same direction as each other, while forming a circulation passageway along a generally heart-shaped central ridge having a contour that determines the course of the cam by contacting the outer periphery of the sliding protrusion; The direction of the slope of the mating protrusion is the same as the direction of the slope that first contacts the sliding mating protrusion of the central raised part during the locking operation, and the upper surface of the circulation passage is formed with an alternating combination of slopes and steps. At the same time, the step is formed at the end of the circulation passage along an extension line of the inclined portion, and a portion of the slide plate is made thin so that when the sliding protrusion passes through the step, the slide plate A lock/release device formed so that it deforms elastically and emits a sound. (2) The locking/releasing device according to item 1, wherein the end face of the sliding protrusion is sloped in accordance with the slope of the slope provided on the upper surface of the circulation passageway along the locking part of the central protrusion.