JP2579059B2 - Seesaw type push button switch device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seesaw push-button switch device that opens and closes a flam switch by a see-saw operation of a keytop serving as a push button, and in particular, various electronic devices. The present invention relates to an improved structure of a spring function for holding a key top in a balanced and restorable manner in a seesaw type push button switch device used for the like.

2. Description of the Related Art FIGS. 3 and 4 schematically show the structure of a conventional seesaw type push button switch device according to a conventional example.

FIG. 3 is a plan view of the conventional device with the front panel removed, and FIG. 4 is a side view of the same device with a part cut away.

In the configuration of the conventional apparatus shown in FIGS. 3 and 4, reference numeral 11 denotes a main body frame of the apparatus, and 12 denotes a main body frame of the apparatus.
A key top, which is disposed inside 11 and has a pair of pressing surfaces 12a and 12b at both ends in the longitudinal direction of the surface portion and serves as a push button;
3, 13 connect the upper part of the inner wall surface of the main body frame 11 and the middle part on both sides of the key top 12 to serve as a seesaw operation axis of the key top 12, and also for balancing and restoring the seesaw operation. Therefore, a pair of supporting arms having good and sufficient elastic force to perform a torsion bar action, that is, a torsion spring action, is required to effectively obtain the torsional spring action force, and is relatively long. Is formed.

Also, 14a, 14b are each pressing surface 12a, 1 in the key top 12.
In correspondence with the position of 2b, a pair of switch push pins extending downward from the lower surface side, 15 is a printed board forming the bottom panel of the main body frame 11, 16a and 16b are on the printed board 15 surface A set of flam switches, each of which has a lower end surface of the pair of switch push pins 14a and 14b lightly abutted, and each of which is individually opened / closed by a push operation accompanying the seesaw operation; 11.The front panel according to claim 11, wherein the key top is inserted through an opening formed in a required portion.
Twelve surface parts are exposed so that the seesaw operation can be performed.

Next, the operation of the conventional device having the above configuration will be described.

In the drawings of the conventional example, when one of the pressing surfaces of the key top 12, for example, the pressing surface 12a side is pressed, the key top 12 twists and biases the pair of support arms 13, 13 to accumulate. It is rotated in the direction of the arrow while pushing it, that is,
In this case, a seesaw operation is performed, and the switch push pin 14a on the corresponding side pushes the flam switch 16a to close the contact.

By releasing the pressing operation of the key top 12 on the pressing surface 12a side, the key top 12 is again rebalanced before the operation by the repulsive force of the torsional bias stored in the support arms 13, 13. FRAM switch 16a restored to position
Can be released and the contact can be opened, and the same operation can be performed on the other pressing surface 12b by the similar seesaw configuration, and thus, one pressing surface can be opened. By a selective pressing operation of the key top 12, one set of the flam switches 16a and 16b can be individually opened and closed.

However, in the conventional seesaw type push button switch device configured as described above, the key top 1
Is held in a seesaw manner by a pair of support arms 13 and 13 so as to be balanced and restorable, so that a good and sufficient torsional spring action force can be effectively applied to these support arms 13 and 13. Since it is necessary to set each of the support arms 13 and 13 to an appropriate length, for example, when a plurality of sets of flam switches 16a and 16b are arranged in parallel, set of Fulham switches 16a, 16b mutual spacing, thus can not be set the arrangement pitch p ₂ of each key top 12 short, the individual key top 12 except that arrangement is difficultyゝconsisting operation become distracted the space On the other hand, on the other hand, as a means for improving this and obtaining a similar seesaw operation at short pitch intervals, a support shaft for the seesaw operation and a spring mechanism for balancing and restoring are used. Use a separate member for DOO but is to be considered, such a means, there is a drawback inevitably device configuration itself becomes expensive and complicated.

The present invention is intended to solve such a conventional problem, and in order to balance a key top as a push button in a seesaw operation mode and to restore the key top, it is necessary to completely use an elastic member by a separate member. It is an object of the present invention to provide a seesaw type push button switch device of this kind which has a relatively simple structure, enables cost reduction, and allows effective use of space. is there.

Means for Solving the Problems In order to achieve the above object, the present invention provides a seesaw type push button switch device, which is mainly provided with a main body frame and a fulcrum rib provided integrally and provided inside the main body frame. A seesaw operation is enabled, and a keytop as a push button for opening and closing a flam switch in response to the seesaw operation, in a direction orthogonal to the axial direction of the seesaw operation, and facing the seesaw operation point as a center, Having at least a support arm integrally formed with the main body frame and the key top, having an elastic force for coupling between the main body frame and the key top, bending the support arm with the seesaw operation And the repulsive force generated by this energy balances the seesaw operation.
It is characterized in that it can be restored.

Therefore, according to the present invention, with the above-described configuration, the support arm is flexed and accumulates in accordance with the seesaw operation by the pressing operation of the key top held in the balanced posture, and the required flam The closing operation of the switch is performed, and the release of the pressing force causes the repulsive force due to the energy stored in the bent support arm to balance the seesaw operation.
The restoration is performed, the flam switch is closed, and the key top can be restored to the equilibrium position before the operation.

Embodiment An embodiment of a seesaw type push button switch device according to the present invention will be described below in detail with reference to FIGS. 1 and 2. FIG.

FIG. 1 is a plan view schematically showing an outline of a seesaw type push button switch device to which this embodiment is applied, in which a front panel is removed, and FIG. 2 is a side view in which a part of the device is cut away. It is.

Also in the configuration of the embodiment shown in FIGS. 1 and 2, 1 is a main body frame of the apparatus, 2 is disposed inside the main body frame 1, and a pair of pressing members is provided at both ends in the longitudinal direction of the surface portion. A key top that has surfaces 2a and 2b and serves as a push button, and performs a seesaw operation as described later, so that the key tops 3a and 3b are opposed to each other in a direction orthogonal to the axial direction of the seesaw operation and around the seesaw operation point. The upper portion of the inner wall of the main body frame 1 and the left and right side portions approaching the intermediate portion of the key top 2 are connected to each other to provide good and sufficient elasticity for balancing and restoring the seesaw operation. Each supporting arm having a force, each of the supporting arms 3a, 3b
By pulling out the key tops 2 as close as possible to the left and right side surfaces, the pitch interval p ₁ between the key tops 2 adjacent to each other is substantially shortened. It is made to gain.

Reference numeral 4 denotes a fulcrum rib extending downward from the lower surface side intermediate portion of the key top 12 and using the arc surface at the lower end of the extension as a fulcrum of the seesaw operation. A pair of switch push pins extending downward from the lower surface corresponding to the positions of the pressing surfaces 2a and 2b, 6 form a bottom panel of the main body frame 1, and a seesaw operation by the fulcrum rib 4 The printed circuit boards 7a and 7b for press-contacting and supporting points are provided on the surface of the printed circuit board 6, and lightly contact the lower end faces of the pair of switch push pins 5a and 5b, thereby pressing the seesaw operation. A pair of flam switches, each of which is operated to open and close a contact, respectively, is a surface panel of the main body frame 1 so that a surface portion of the key top 2 can be seesaw-operated from an opening formed in a required portion. Exposed.

Next, the operation of the embodiment device having the above configuration will be described.

In each of the drawings of the above-described embodiment, when one of the pressing surfaces of the key top 2, for example, the pressing surface 2 a side is pressed, the key top 2 makes a pair of each of the key tops 2 with the seesaw operating point of the fulcrum rib 4 as a fulcrum. The support arms 3a and 3b are rotated in the direction of the arrow while being bent and urged, that is, the seesaw operation is also performed, and the switch push pin 5a on the corresponding side is also operated.
Can press the flam switch 7a to close the contact.

When the pressing operation of the key top 2 on the pressing surface 2a side is released, the key top 2 is rebalanced before the operation by the repulsive force of the urging force accumulated in each of the support arms 3a and 3b. It is restored to the position, the pressing operation on the flam switch 7a is released, and the contact can be opened,
This operation can be performed on the other pressing surface 2b in exactly the same manner by a similar seesaw configuration. In this manner, one key top 2 is selectively pressed to perform one set of pressing operations. The flam switches 7a and 7b can be individually opened and closed.

That is, as described above, in the seesaw type push button switch device according to the configuration of the present embodiment, the seesaw operation is performed on the key tops 2 that open and close the one set of flam switches 7a and 7b by performing the seesaw operation. A pair of support arms having a sufficient elastic force so as to face each other in a direction orthogonal to the axial direction of the
3a and 3b, the key top 2 and the main body frame 1 are integrally connected, and the support arms 3a and 3b are used to open and close the flam switches 7a and 7b. balance seesaw operation, in order so as to obtain the spring action for recovery is of the pitch p ₁ of between the key tops 2, 2 adjacent to each other can be substantially shortened.

Effects of the Invention The present invention has the following effects, as is apparent from the above embodiment.

(1) By integrally forming the key top, the main body frame and the support arm, a seesaw push button switch can be configured with a small number of components.

(2) Since the repulsive force of the switch is not used for supporting the key top, the contact structure is not limited to the rubber switch.

(3) A plurality of key tops can be integrally formed, and an arrangement space can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing an outline of a seesaw type push button switch device to which one embodiment of the present invention is applied, in which a front panel is removed, and FIG. 2 is a side view in which a part of the device is cut away. FIG. 3 is a plan view schematically showing an outline of a conventional seesaw type push button switch device with a front panel removed, and FIG. 4 is a side view of the same device with a part cut away. 11 ... body frame, 2 ... key top to be a push button, 2a, 2b ... pressing surface, 3a, 3b ... support arm, 4 ... fulcrum rib, 5a, 5b ... switch push pin, 6 ... Printed circuit board, 7: Flam switch, 8: Front panel.

Claims (1)

(57) [Claims] 1. A push button for enabling a seesaw operation around a main body frame and a fulcrum rib integrally disposed and provided inside the main body frame, and for opening and closing a flam switch in response to the seesaw operation. A key top, in a direction orthogonal to the axial direction of the seesaw operation, and facing the center of the seesaw operation point, having an elastic force for coupling between the main body frame and the key top; At least a support arm integrally formed with the key top is provided, and the support arm is bent and accumulates in accordance with the seesaw operation, and the repulsive force of the accumulation balances and restores the seesaw operation. A seesaw button switch device characterized in that the button switch device is configured to obtain a button.