JPH0249749Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is used, for example, in a rotating part between an audio rack or the like and a door. Specifically, when the door is pushed once, it locks, and in this locked state, the door is locked again. This invention relates to a locking device that releases the locked state when the door is pushed.

[Conventional technology]

Conventionally, as shown in Fig. 4, a locking device used for the door of an audio rack, etc., has a protruding part D fixed to the back surface of the door C inserted into a grip part B fixed to the audio rack main body A, and the locking device locks the door. When the pressing part E on the surface of C is pressed, the protruding part D on the back side of the door C is locked to the gripping part B, and the door C is held in a closed state. When the pressing part E is pressed again, the gripping part B There was a case where the lock was in the open state and door C could be opened.

[The problem that the idea aims to solve]

However, in this type of lock device, it is necessary to position the center of the protrusion fixed to the door surface on the same straight line as the center of the grip fixed to the door body, and when installing the lock device, adjustment is required. This was time-consuming and difficult.

In addition, the doors of audio racks and other devices that have become popular in recent years use transparent members to allow the inside to be seen. Therefore, the protruding parts that are fixed to the door and the gripping parts that are fixed to the main body are used to prevent the door from being closed. However, there were also problems such as poor appearance because it was visible from the outside.

Furthermore, in order to install a locking device, the door must be fixed and a hinge or the like must be attached to the rotating part, and if the rotating part is the center, it must be attached to the opening end of the door. There was a risk that the locking device would be damaged by the strong impact and that the door would also be damaged.

In view of the above problems, the present invention does not mount the locking device on the opening end of the door, but instead mounts it at the center of the door opening/closing axis, thereby eliminating the need for a rotating member such as a hinge, and requiring special adjustment when installing the locking device. To provide a lock device that does not require a lock, does not give a shock to the lock device during door opening work, and is invisible from the outside even if the door is transparent and has a good appearance.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention has a cylindrical case main body with one end open, and a rotatable member that is rotatable in close contact with the inner surface of the case main body and elastically biased in a direction along the inner surface of the case main body. A groove portion having an endless loop portion is formed in at least a portion of one of the joint surfaces of the case body and the rotating member, and an inflection recess portion for restricting rotation of the rotating member is provided in the middle of the endless loop portion. , a concave portion is formed in the width direction corresponding to the endless loop-shaped portion on the other joint surface and in a positional relationship substantially parallel to the axial direction, so that the concave portion can be rolled along the groove portion on one of the joint surfaces; Another object of the present invention is to provide a locking device characterized in that a ball slidable in the direction of the rotation axis is interposed in the groove and elastically biased toward one side.

[Effect]

Since the present invention is constructed as described above, one of the cylindrical case body or the rotating member is fixed to, for example, an audio rack, and the other is fixed to the rotating shaft portion of the door, so that the open end of the door can be opened externally. When you press from
A ball that can freely roll in the direction of the rotation axis starts rolling along a position substantially parallel to the rotation axis direction, and rolls while being elastically biased against a groove portion formed in the cylindrical case body or the rotation member, The ball approaches a protrusion that crosses the groove, climbs over the protrusion, and with a "click" sound, the ball passes through the protrusion and enters the endless loop-shaped part connected to the groove. The ball comes into contact with a side wall of the endless loop section that is substantially parallel to the rotational axis direction, thereby regulating the rotation of the rotating member, so that when the door is stopped pressing, the rotating member is rotated. Since the ball is elastically biased toward one side of the groove in the direction of the rotation axis, the ball rolls along the side wall of the endless loop portion, and the side wall changes its course. It approaches the protrusion, leaves the side wall, traverses the groove, comes into contact with a substantially heart-shaped protrusion protruding from the approximate center of the endless loop-shaped groove, and rolls along the protrusion. engaging with an inflection recess provided at a substantially acute angle portion where the course changes, and engaging with an engagement recess formed at a joint between the inflection recess and the groove to stop the ball from rolling; By restricting the rotation of the rotating member, the door is locked. Then, when the open side of the door is pressed again, the ball leaves the inflection recess and the engagement recess and begins to roll again in the endless loop, but the other cylindrical case body that formed the groove or the rotation Since the ball is prevented from rolling in one direction of the rotating shaft by the elastic member installed in the recess formed in the member, the ball does not return to its original path but rolls in the endless loop-shaped portion, and eventually returns to the same position as above. When the ball comes into contact with a portion of the side wall of the endless loop portion that is substantially parallel to the rotational axis direction to restrict rotation, and the pressing is stopped, the ball rolls while being joined to the side wall of the endless loop portion by the elastic member. Then, the door is brought into an open state by making one circuit around the endless loop-shaped part and returning to the groove part which is continuous in the rotational direction, and by setting the rotary member in a free rotation state.

〔Example〕

An embodiment of the present invention will be described based on the attached drawings. That is, what is shown as 1 in the figure is a cylindrical case body with one end open, and a plate-shaped mounting piece 2 having a substantially rectangular shape in plan view is erected at the open end of the case body 1 . In order to fix the case body 1 to, for example, an audio rack, a mounting hole 3 is formed in the long side direction of the mounting piece 2 at a position approximately symmetrical to the center of the case body 1, and a screw 3' is inserted into the mounting hole 3. etc. to fix it. Further, an opening 5 larger than the endless loop portion described later is formed at least in the axial direction of the side wall 4 of the case main body 1, and an opening 6 larger than the opening 5 is successively provided on the outer surface side. two openings 5-6
A plurality of pins 7 are erected outwardly at appropriate positions on the outer surface between them. Although the outer diameter shape of this embodiment is cylindrical, for example, even if the outer diameter is made into a polygonal shape, there is no need to specifically limit it as long as the inner diameter is cylindrical.

Further, inside the case body 1, a cylindrical body 8 having an outer diameter such that it is positioned with a slight gap from the inner surface of the case body 1, being shorter than the axial direction of the case body 1, and having one side open, is attached to the case body 1. 1. A shaft 10 is provided at the center of the inner surface of the case body 1, and has an outer diameter such that the shaft 10 is formed concentrically with the inner surface of the closing surface 9 and is located inside the cylinder 8 with a slight gap from the inner surface of the cylinder 8. axis 1
A notch 11 is formed at the base end.

Next, reference numeral 12 in the figure is a rotatable cylindrical rotary member that is closely or slightly spaced from the inner surface of the case body 1, and at least part of the outer surface of the side wall 13 of the rotary member 12. Endless loop part 1
4, a substantially heart-shaped protrusion 16 is formed approximately at the center of the endless loop-shaped part 14, and an inflection recess of the substantially heart-shaped protrusion 16 is formed in the middle of the endless loop-shaped part 14. A circular engagement recess 18 is formed in the vicinity of the joint with 17. Moreover, the protrusion 16
A raised part 19 which is connected to the groove part 15 and which is shorter than the length of the groove part 15 and which crosses the groove part 15 is formed at the connecting part with the linear groove part 20 which is connected to the endless loop part 14. Further, the rotating member 12 has a shaft hole 21 into which the shaft 10 is inserted and slides in sliding contact in the rotational direction, and a cylinder 22 with one side open is erected from the closing surface 23 side at the center of the rotating member 12. A notch 24 is formed at the base end of the cylindrical body 22. A protrusion 25 that is larger than the inner diameter of the case body 1 is erected on the periphery of the closing surface 23, and on the outer surface of the closing surface 23, approximately coaxially with the cylindrical body 22, the rotation of the door, etc. Protrusion 2 for insertion on the basic axis line
6 have been set up.

Shaft 1 of cylindrical case body 1 formed as described above
0 on the opening side 27 of the case body 1.
Insert the coil spring 28
One end is fixed to the notch 11 of the shaft 10 and the other end is fixed to the notch 24 of the cylinder 22 on the inner surface of the rotating member 12 to support both ends, and the rotating member 12 is connected to the inner surface of the case body 1 and the It is inserted into the gap between the outer surface of the cylinder 8 and the rotating member 1 at this time.
If highly viscous grease or the like is applied to the inner and outer surfaces of the rotary member 12, wear between the rotary member 12 and the main body case 1 is reduced, and the damper effect when the door is opened and closed is enhanced. After the rotating member 12 is installed inside the case body 1, a metal member is placed on the linear groove 20 of the rotating member 12 so as to be able to roll along the groove 20 and to be slidable in the direction of the rotating shaft 10. A ball 29 made of In this state, it is fitted into the opening 5-6 of the side wall 4 of the case body 1 so as to be flush with the inner surface of the case body 1, in the width direction corresponding to the endless loop portion 14, and in the axial direction. A recess 30 is formed in a positional relationship substantially parallel to the recess 30 , and the bent part 32 of the leaf spring 31 bent into a dogleg shape in cross section is placed in the recess 30 on one side so as to be positioned toward the closing surface 9 side of the case body 1 . The other spring piece 36 of the leaf spring 31 is fixed to the other spring piece 36 of the leaf spring 31, and a cover 35 is provided with recesses 34 at positions corresponding to the plurality of pins 7 erected on the outer surface of the opening 5-6. It is fitted onto the outside so that the ball 29 is in contact with it.

Case body 1 of the locking device configured as described above
For example, by embedding and fixing the rotating member 12 in an audio rack or the like, and fixing the rotating member 12 at the position that becomes the rotating axis of the door, the ball 29 can be fixed when the door is in the open state as shown in FIG. 3A. When the ball 29 is located in the groove portion 15 that is not the endless loop portion 14 and the door is pressed, the ball 29 rolls in the groove portion 15 and climbs over the raised portion 19, making a “click” sound and collapsing, and the endless loop portion 14 However,
The groove portion 15 comes into contact with a portion substantially parallel to the axial direction of the outer side wall 37, thereby restricting rotation and reaching a limit position for pressing the door (see FIG. 3B). Then, when the pressing of the door is stopped, the case body 1
The elastic force of the coil spring 28 interposed between the ball 2 and the rotating member 12 causes the ball 2 to rotate in the original direction, and the other spring piece 36 of the leaf spring 31 moves toward the ball 2.
9 rolls along the outer side wall 37 of the groove portion 15 due to the action of moving in the direction of the bent portion 32, but eventually the side wall 37 approaches a slightly acute curved protrusion 38 heading in the opposite direction. , the ball 29 separates from the side wall 37 and comes into contact with the approximately heart-shaped protrusion 16, and also engages the engagement recess 18 approximately in the center of the protrusion 16.
When the ball 29 is fitted into the inflection recess 17 of the recess 18, the rotation is restricted.
The door becomes locked (see Figure 3, c).

Furthermore, when the door is pressed again, the engagement recess 18
The ball 29 escapes from the space, is regulated in one direction by the plate spring 31, and is connected to the inflection protrusion 38 and the engagement recess 1.
8 is displaced on the rotational direction line, it rolls in the groove portion 15 without returning to the original path, and similarly to the above, the rotation is regulated by contacting the outer side wall 37 of the portion substantially parallel to the axial direction. , which is the limit position for pressing the door (see Figure 3 D). When the door stops being pressed, the elastic force of the coil spring 28 causes the door to rotate in the original direction, and the other spring piece 36 of the leaf spring 31 moves the ball 29 in the direction of the bent portion 32. Due to the intended action, it rolls while being joined to the side wall 37 of the groove portion 15, returns to the linear groove portion 20 from the position where it has gone around the endless loop portion 14, and opens the door. See Figure 3 E].

[Effect of idea]

The present invention is constructed as described above, and its greatest feature is that the conventional linear action is rotated. Therefore, the locking device of the present invention can be attached to a rotating shaft of a door, etc. Since the locking device is not visible from the outside when used on doors made of transparent materials, which have become popular in recent years, it looks good, and since it is mounted on the rotating shaft, it will not be damaged when opening and closing the door. . Furthermore, by appropriately changing the material of the locking device of the present invention, it can be used in place of a hinge for a general door, or it can be easily attached to the rotating shaft of other rotating doors.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, FIG. 2 is a sectional view showing one embodiment of the present invention,
FIG. 3 is an explanatory view showing the action of the ball, and FIG. 4 is an explanatory perspective view showing a conventional example. 1...Tubular case body, 2...Mounting piece, 3...
Mounting hole, 4... side wall, 5... opening, 6... opening,
7...Pin, 8...Cylinder, 9...Closing surface, 10...
...Shaft, 11... Notch, 12... Rotating member, 13
... Side wall, 14 ... Endless loop portion, 15 ... Groove, 16 ... Protrusion, 17 ... Inflection recess, 18 ...
Engagement recess, 19... Raised portion, 20... Linear groove, 21... Shaft hole, 22... Cylindrical body, 23... Closing surface, 24... Notch, 25... Projection, 26... Projection, 27...Opening side, 28...Coil spring, 29
... Ball, 30 ... Recess, 31 ... Leaf spring, 32 ...
...Bending portion, 33... Spring piece, 34... Concave portion, 35
... Cover, 36 ... Spring piece, 37 ... Side wall, 3
8...Inflection protrusion.

Claims (1)

[Claims for Utility Model Registration] 1. A cylindrical case main body having one end open, with a rotatable member installed in close contact with the inner surface of the case main body and elastically biased in a direction along the inner surface of the case main body; A groove portion having an endless loop portion at least in part is formed on one of the joint surfaces of the main body and the rotating member, and an inflection recessed portion for restricting rotation of the rotating member is provided in the middle of the endless loop portion, and A concave portion is formed in the width direction corresponding to the endless loop-shaped portion on the other joint surface and in a positional relationship substantially parallel to the axial direction, so that it is possible to roll along the groove portion on one of the joint surfaces, and to rotate. A locking device characterized in that a ball slidable in the axial direction is interposed in the groove portion and elastically biased toward one side. 2. It goes around once along the approximately heart-shaped protrusion protruding from the approximate center of the loop-shaped groove that circulates in one direction,
A utility model according to claim 1, characterized in that a protruding portion connected to the protruding portion and crossing the groove portion is provided closer to this side than the engaging portion in the direction of elastic biasing of the ball in the groove portion. Locking device.