JP2001184976A - Lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock device, which has a simple structure, is small and thin, and is easily fabricated. SOLUTION: A handle 10 and a moving molding 60 are coupled with each other while interposing a case 40 therebetween. Between the handle 10 and the moving molding 60, there is disposed a lock member 70 serving to lock the handle 10 at a desired position. The lock member 70 is resiliently moved toward the handle 10 by virtue of a plate spring 80. The lock member 70 is received between the handle 10 and the moving molding 60 while interposing a lock member-inserting portion 45 formed at the case 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism having a structure for locking a knob at a predetermined position.

[0002]

2. Description of the Related Art Conventionally, various types of portable equipment are provided with push-button switches and rotary switches for operating the portable equipment. Is gathered in one place.

FIG. 5 shows a conventional switch mechanism of this type. The switch mechanism shown in the figure is configured such that a push button switch 150 is provided at the center and a ring-shaped knob 160 is provided so as to surround the push button switch 150. The push button switch 150 is operated by pressing it. On the other hand, the knob 160 rotates and operates in a state where the lock member 161 is pressed down to release the lock. And knob 160
Is returned to the lock position again, the lock member 161 is pushed up by the elastic force of the coil spring attached to the lower portion of the lock member 161 and locked.

However, the above-mentioned conventional lock mechanism requires a coil spring that pushes up the lock member 161 and a housing component for housing the coil spring, and the structure is complicated, so that further miniaturization cannot be achieved. Assembly was complicated. In addition, since a coil spring is used, the thickness of the lock mechanism provided below the lock member 161 is increased, and the reduction in thickness is hindered. If the miniaturization and thinning of the lock mechanism are hindered, the miniaturization and thinning of the entire switch mechanism is hindered.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a lock mechanism which has a simple structure, can be reduced in size and thickness, and can be easily manufactured. is there.

[0006]

In order to solve the above-mentioned problems, a lock mechanism according to the present invention comprises a knob and a movable object rotatably connected via a case, and a knob is provided between the knob and the movable object. A lock member for locking the knob at a predetermined position is provided, and the lock member is resiliently moved toward the knob by a leaf spring. The lock member is housed between the knob and the movable object through a lock member insertion portion provided in the case, and the lock member insertion portion inserts a lock portion provided in the lock member to move the lock member. It is preferable that the lock member is provided with a lock engagement portion for regulating, and a guide portion for positioning the lock portion of the lock member below the case and guiding its movement. Preferably, the leaf spring is provided with a click resilient portion for clicking.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a switch mechanism using a lock mechanism according to one embodiment of the present invention. As shown in the figure, the switch mechanism is configured by attaching a push button knob 30 inside a knob 10 with a lock mechanism. Then, when the push button knob 30 is pressed,
An on / off switch provided therein is turned on. On the other hand, the knob 10 is locked in this position and does not rotate,
The knob 10 can be rotated by pressing the knob 73 of the lock member 70 to release the lock.
The knob 10 rotates in an angle range of, for example, 45 °. Once the lock is released, the lock remains in the unlocked state even if the pressing of the knob 73 is stopped. However, when the lock returns to the illustrated position, the lock is again applied.

FIG. 3 is an exploded perspective view of the switch mechanism. As shown in FIG.
, A push button knob 30, a case 40, a rotary object (movable object) 60, a lock member 70, a leaf spring 80, a flexible substrate 100, and a fixed base 110. Hereinafter, each component will be described.

The knob 10 is formed by molding a synthetic resin into a substantially flat plate shape, and has an insertion hole 11 penetrating the push button knob 30 therein and a knob portion 7 of a lock member 70 described below.
3 is provided, and a plurality of fixing portions 15 projecting from the lower surface to the lower surface side via the case 40 to be fixed to the rotary mold 60 are provided in a protruding manner.

The push button knob 30 is formed by molding a synthetic resin into a substantially columnar shape, and is provided with a flange 33 on the outer periphery of a main body 31 at the upper portion thereof, and a pressing portion 35 protruding from the lower surface thereof. ing.

The case 40 is formed by molding a synthetic resin into a plate shape. An insertion portion 41 for inserting the pressing portion 35 of the push button knob 30 is provided at a predetermined position, and a circle is formed around the insertion portion 41. Insertion portions 43, 43, which are arc-shaped and insert the fixing portion 15 of the knob 10 rotatably by a predetermined angle, are provided;
Further, the insertion portion 13 of the knob 10 outside the insertion portion 43
A lock member insertion portion 45 for engaging and disengaging a lock member 70 described below is provided at a position corresponding to. The lock member insertion portion 45 includes an arc-shaped guide portion 45a for guiding only the knob portion 73 of the lock member 70 described below and guiding the same, and a lock for engaging the lock portion 71 of the lock member 70 and locking the movement thereof. An engagement portion 45b is provided.

A fixing projection 47 for fixing the case 40 to the flexible substrate 100 or the like protrudes from a predetermined position on the lower surface of the case 40.

The rotary member 60 is made of a molded resin, and has a tongue-shaped slider mounting portion 63 and a lock member housing portion 65 projecting from the outer periphery of a ring-shaped main body 61. The main body 61 is provided with a plurality of fixing portions 67 each having a through hole for inserting and fixing the fixing portion 15 of the knob 10. Two slider fixing projections 69 protrude from the lower surface of the slider mounting portion 63.
A slider 120 made of a metal plate is attached to the lower surface of the slider 3, and the slider fixing projection 69 is inserted into two mounting holes 121 provided in the slider 120, and the tip is thermally caulked and fixed. The slider 121 is provided with three sliding contact portions 123 (only the one on the near side is visible in FIG. 3) facing downward.

Here, the lock member 70 is made of a molded resin, and is formed by projecting a knob 73 from the upper surface of a substantially rectangular lock 71. Lock part 7
Locking portions 75, 75 (only the near side is shown in FIG. 3) protrude from the front and rear sides of 1.

The lock member storage section 65 of the rotary type object 60 has a storage section 67 having a size and shape for storing the lock section 71 of the lock member 70 in a vertically movable manner. An insertion portion 69 having a size into which a resilient portion 87 of a leaf spring 80 described below can be inserted is provided.

Next, the leaf spring 80 is formed of an elastic metal plate, and is formed by projecting a resilient portion 87 from an outer periphery of a substantially ring-shaped main body portion 81. The main body 81 is provided with a fixing portion 83 having the same shape at the same position as the fixing portion 67 of the rotary type object 60.
5 are provided. The click resilient portion 85 is configured by curving the entirety downward and providing a resilient portion 85a at the center thereof. The resilient portion 87 has its root portion bent upward and directed obliquely upward, and the vicinity of the tip thereof is in contact with the contact portion 8.
7a.

FIG. 4 is a perspective view showing the flexible substrate 100 and the fixing base 110. Flexible substrate 10
No. 0 is formed by printing and forming a predetermined circuit pattern on the surface of a synthetic resin sheet. FIG. 4 shows only the switch pattern 101 in the circuit pattern.
The switch pattern 101 is formed such that the three sliding contact portions 123 of the slider 120 are brought into sliding contact with each other to switch the connection state of the switch.

An opening 103 is provided at a position of the flexible substrate 100 opposite to the portion where the click spring portion 85 of the leaf spring 80 is provided, and a portion of the flexible substrate 100 located just below the push button knob 30 is a flexible substrate. The switch contact portion 105 is formed by opposing contact patterns (not shown) by folding a part of the switch contact portion 105.

On the other hand, the fixing base 110 is made of a hard plate such as a metal plate, and has an opening 1 of the flexible substrate 100.
A click engaging portion 111 including four openings or recesses is provided at a position facing the third portion. Further, fixing holes 107 and 113 are provided at positions of the flexible board 100 and the fixing base 110 facing the fixing protrusions 47 of the case 40.

Reference numeral 130 shown in FIG. 3 denotes an elastic rubber click spring formed in a substantially trapezoidal shape, and is mounted on the switch contact portion 105 of the flexible substrate 100.

To assemble the switch mechanism, the push button knob 30 and the knob 10 are placed on the case 40. At this time, the push button knob 30 is inserted into the insertion portion 41 of the case 40.
Of the case 40, and the insertion portions 43, 43 of the case 40 are inserted.
The fixing part 15 of the knob 10 is inserted. At this time, the main body 31 of the push button knob 30 is inserted into the insertion hole 11 of the knob 10.

Next, the lock member storage 65 of the rotary mold 60
The lock portion 71 of the lock member 70 is inserted therein, and the slider 120 attached to the lower surface of the slider mounting portion 63 as described above is disposed on the lower surface of the case 40. Fixing part 15 of knob 10 projecting from
Is inserted into the fixing portion 67 of the rotary object 60. Further, by attaching a leaf spring 80 to the lower surface of the rotary mold 60,
The fixing portion 15 of the knob 10 is inserted into the fixing portion 83 of the leaf spring 80, and its tip is heat caulked. By this, knob 1
0, the rotary mold 60 and the leaf spring 80 are rotatably connected via the case 40.

Then, the click spring 130, the flexible board 100, and the fixed base 110 are attached to the lower surface of the case 40. At this time, the fixing projection 47 provided on the case 40 is inserted into the fixing holes 107 and 113 so that the tip thereof is fixed to the fixing base 11.
Heat caulking on the lower surface of 0 and fix. This completes the switch mechanism.

FIG. 2 is a schematic side sectional view of the switch mechanism. As shown in the drawing, the lower surface of the pressing portion 35 of the push button knob 30 abuts on the click spring 130, and its main body 31
Is projected from the insertion hole 11 of the knob 10. The resilient portion 87 of the leaf spring 80 is inserted into the insertion portion 69 of the rotary object 60.
The lock member 71 of the lock member 70 is repelled so as to penetrate the inside and push up the bottom surface of the lock portion 71 upward. FIG. 2 shows a state in which the lock portion 71 is inserted into and engaged with the lock engagement portion 45b (see FIG. 3). At this time, the knob portion 73 protrudes highest from the insertion portion 13 of the knob 10. ing. Even if the lock portion 71 is engaged with the lock engagement portion 45b, the locking members 75 provided on the lock portion 71 abut against the lower surface of the case 40, so that the lock member 70 does not come out of the case 40.

When the push button knob 30 is pressed from the state shown in the figure, the pressing portion 35 pushes the click spring 130 to reverse it, and presses the switch contact portion 105 immediately below the click spring 130 to turn it on. When the pressing on the push button knob 30 is released, each member returns to the original position by the elastic force of the click spring 130, and the switch contact portion 105 is turned off.

When one of the knobs 73 is pressed, the spring 8
7, the lock member 70 descends, and the engagement between the lock portion 71 and the lock engagement portion 45b is released. When the knob 10 is rotated in this state, the lock 7
1 moves on the lower surface side of the case 40. Since the rotary object 60 is simultaneously rotated by the rotation of the knob 10, FIG.
2 slides on the switch pattern 101 and changes its on / off state.
At this time, at the same time, the clicking portion 85a of the clicking portion 85 engages with and disengages from the click engaging portion 111 of the base 110, so that a click feeling is generated.

While the knob 10 is being rotated, the lock remains unlocked even if the knob 73 is not pressed, but when the lock 71 returns to the position of the lock engagement portion 45b. Are engaged by the pushing force of the resilient portion 87 and return to the state shown in FIG.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims and the technical idea described in the specification and the drawings. Is possible. It should be noted that any shape or material not directly described in the specification and the drawings is within the scope of the technical idea of the present invention as long as the effects and effects of the present invention are exhibited.

For example, in the above-described embodiment, a push button switch mechanism including components such as a push button knob 30 is disposed at the center of the knob 10, but in this portion, a swing switch mechanism and the like are provided.
Other various mechanisms may be arranged. In some cases, no other mechanism may be arranged at the center of the knob 10.

The structure of the lock mechanism is not limited to the shape and structure of the above-described embodiment, but can be variously modified. For example, in the above embodiment, the lock mechanism according to the present invention is applied to a rotary switch mechanism, but may be applied to a slide switch mechanism. In short, any structure may be used as long as the lock member is locked by directly or indirectly repelling the plate with a leaf spring. In addition, mounting the lock mechanism according to the present invention
The present invention is not limited to the switch mechanism, and may be another electronic component mechanism such as a resistor.

[0031]

As described in detail above, the present invention has the following excellent effects. The lock member can be constructed simply by springing it off with a leaf spring, which eliminates the need for complicated components and simplifies the structure, making it possible to reduce the size. Will also be easier.

Since the click spring portion is provided on the leaf spring that springs the lock member, the two members can be constituted by one part, which also simplifies the structure, reduces the number of parts, and facilitates assembly.

[Brief description of the drawings]

FIG. 1 is a perspective view of a switch mechanism using a lock mechanism according to an embodiment of the present invention.

FIG. 2 is a schematic side sectional view of a switch mechanism.

FIG. 3 is an exploded perspective view of a switch mechanism.

FIG. 4 is a perspective view showing a flexible substrate 100 and a fixing table 110.

FIG. 5 is a diagram showing a conventional switch mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Knob 30 Push button knob 40 Case 45 Lock member insertion part 45a Guide part 45b Lock engagement part 60 Rotary object (movable object) 65 Lock member storage part 67 Storage part 69 Insertion part 70 Lock member 71 Lock part 73 Knob part 75 Locking part 80 Leaf spring 81 Body part 85 Click spring part 85a Spring part 87 Spring part 87a Contact part 100 Flexible board 110 Fixed base 111 Click engagement part 120 Slider 130 Click spring

Claims (3)

[Claims] 1. A knob and a movable object are rotatably connected via a case, and a lock member for locking the knob at a predetermined position is provided between the knob and the movable object. A lock mechanism characterized by being spring-loaded toward the knob side by a leaf spring. 2. The lock member is housed between the knob and a movable object via a lock member insertion portion provided in the case, and the lock member insertion portion inserts a lock portion provided in the lock member. A lock engaging portion for restricting the movement of the lock member, and a guide portion for guiding the movement by positioning the lock portion of the lock member below the case. Item 2. The lock mechanism according to Item 1. 3. The lock mechanism according to claim 1, wherein the leaf spring is provided with a click resilient portion for clicking.