JPH0718111Y2 - Push button device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a push button device which is used in a handy type electronic device or the like and which pushes an operated member such as a built-in push button switch with an operating button.

[Conventional technology]

A pen-type barcode scanner is an example of an electronic device that pushes an operation button to turn on a built-in push-button switch. With this pen-type barcode scanner, the light-emitting element and light-receiving element function while the pushbutton switch is turned on by pushing the operation button with your finger, and the barcode of the optical medium can be read. It is configured so that it becomes unreadable when released.

FIG. 3 is an exploded perspective view for explaining the basic structure of such a pen type barcode scanner.

In the figure, a substantially cylindrical casing 11 is formed by combining a pair of detachable split cases 11a and 11b. Inside the casing 11, a light emitting element (not shown),
A sensor unit 12 provided with a light receiving element, an optical fiber, and the like, and a processing circuit unit 13 on which electronic parts are mounted based on a printed wiring board electrically connected to the light receiving and emitting elements of the sensor unit 12 and the like. A cable 14 that is housed and extends to the outside of the casing 11 that is wired in the processing circuit 13 is adapted to transmit an electric signal with a main body device (not shown). Further, at the end portion of the casing 11 on the sensor unit 12 side, extending portions 15 and 15 are formed to project in each of the split cases 11a and 11b,
By inserting the intermediate cap 16 into these extending portions 15 and 15 and screwing the tip cap 17 into the male screw portion 16a of the intermediate cap 16, the optical position between the translucent window 17a of the tip cap 17 and the sensor portion 12 can be obtained. Relationships are becoming regulated.

Then, when a not-shown operation button that is exposed in the opening of the peripheral body portion of the casing 11 is pressed for a predetermined stroke, the tact switch 13a mounted on the processing circuit unit 13 is switched to the on state, and as a result, the sensor unit 12 The light emitting element of (1) emits light, and the amount of light received by the light receiving element is processed by the processing circuit unit 13. That is, when the tact switch 13a is pushed through the operation button and the light beam emitted from the light receiving element is applied to the barcode area of the optical medium, the light reflected according to the reflectance of the barcode is detected by the light receiving element. The electric signal from the light receiving element is processed by the processing circuit unit 13 and then transmitted to the main device.

[Problems to be solved by the device]

By the way, in such an electronic device having a push button structure, the operation button is often exposed to the top surface of the casing 11 (the top surface of the split case 11a). At that time, the operation button is held in the split case 11a, After the sensor section 12, the processing circuit section 13 and the like are installed inside the other split case 11b, the pair of split cases 11a and 11b are combined, so that both split cases 11a and 1b are combined.
1b had to be used as a standard for assembling work, which was an obstacle to the assembling process such as automation.

In addition, recently, in order to improve operability and obtain design features, various modifications have been proposed in which the shape of the casing 11 is devised and the operation button is exposed at the mating portion of the split cases 11a and 11b. At that time, the assembling direction of the operation button is greatly different from the assembling direction of other members, which is also an obstacle in the assembling process such as automation.

Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art, to allow the operation button to be exposed at the mating portion of the pair of split cases, and thus to have a wide degree of design freedom and good assemblability. It is to provide a push button device.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a push button operation for accommodating an operated member inside a casing formed by combining a pair of split cases, and straddles each split case at the mating portion of the pair of split cases. An opening that is opened, an operating member that is exposed from within the opening for pressing the operated member, and a support that supports the operating member and has flexibility in the operating direction of the operating member. The body and the supporting body are provided so as to project outward from the corresponding positions of the supporting body in the assembling direction of the split case, and one extends along the circumferential direction of the inner wall surface of the one split case, and the other extends from the other side. A pair of locking pieces extending along the circumferential direction of the inner wall surface of the split case, slits provided on the operation member in a direction orthogonal to the locking pieces, and projectingly provided on the inner wall of the one split case. A pair of First engaging protrusion and, the second, which are projected on the inner wall of the other split case positioning and fixing the other of said pair of locking pieces for positioning and fixing one of the locking pieces
And a pair of locking pieces of the operating member are fitted by the first engaging protrusion and the second engaging protrusion of the pair of split cases to sandwich the operating member. is there.

[Action]

According to the above means, the inner wall surfaces of the pair of split cases are used as the receiving surfaces, and one of the locking pieces is locked to the engaging projection that is provided on the split case. Since the supporting body can be made to stand on one split case and the assembling direction of this supporting body is the same as the assembling direction of other members, one-way assembly can be performed.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a main part of a pen-type barcode scanner according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a process of assembling the operation button of the barcode scanner into a split case. , Reference numeral 1 in the drawing is a casing formed by combining a pair of split cases 1a and 1b, 2 is an opening opened across the split cases 1a and 1b, and 3 and 4 are inside walls of the split cases 1a and 1b, respectively. It shows the protruding protrusions, and the split case 1a
The tip end surface of the engaging projection 3 on the side is a tapered surface 3a for guiding. Reference numeral 5 is a tact switch of the processing circuit unit 13.
An operation button for pressing 13a, 6 is a substantially rectangular support body formed integrally with the operation button 5 and having flexibility in the operation direction of the operation button 5 (left-right direction in FIG. 1), Denoted at 8 are locking pieces projecting outward from the central portion of each long side of the support body 6, and the groove portion 7a of one locking piece 7 is larger than the groove portion 8a of the other engaging piece 8. And it is getting shallower.

As is apparent from FIG. 1, one of the locking pieces 7 of the supporting body 6 extends along the circumferential direction of the inner wall surface of the split case 1a and is positioned and fixed to the engaging projection 3, Since the other locking piece 8 of 6 extends along the circumferential direction of the inner wall surface of the split case 1b and is positioned and fixed to the engaging projection 4, the support 6 is provided with the opening 2 of each split case 1a, 1b. The inner wall surface in the vicinity is held by the casing 1 as a receiving surface, and therefore, the operating body 5 located inside the support body 6 always comes out into the opening 2 through the pair of connecting portions 6a and 6b, and The flexibility of the support 6 allows the operation button 5 to move in the left-right direction in FIG. 6c is an L-shaped slit that includes a direction directly extending in the extending direction of the locking pieces 7 and 8, and the slit 6c
A pair of connecting parts 6a is constituted by this.

That is, when assembling the support body 6, as shown in FIG. 2, one long side of the support body 6 is inserted between the inner wall surface near the opening 2 of the split case 1b and the engagement projection 4. Then, if the engaging projection 4 is fitted into the groove 8a of the locking piece 8, the support 6 can be made to stand on the split case 1b. When the split case 1a is assembled on the split case 1b while inserting the split case 1a into the groove 7a of the locking piece 7 using the guide surface as a guide surface, the support body 6 is naturally fixed and the operation button 5 is exposed in the opening 2.

As described above, in the above-described embodiment, the support 6 that supports the operation button 5 is the same as the sensor unit (not shown), the processing circuit unit 13, the split case 1a, etc. As it can be assembled upward or downward in the drawing, a one-way assembly suitable for automation can be realized and mass production can be achieved.

Further, in the above-mentioned embodiment, since the connecting portions 6a and 6b are provided at the two positions on the short side of the supporting body 6 which are most distant from each other, the bending amount of the supporting body 6 is set to be large. A desired stroke can be ensured in the operation button 5 without increasing the outer dimensions of the control button 6, and therefore the space factor is improved. However, the shape of the support 6 and the connecting portions 6a and 6b
The position of is not limited to the above-mentioned embodiment, and it is possible to increase the amount of bending of the support body by, for example, providing a connecting portion near the locking piece to cut between the two.

Furthermore, in the above-mentioned embodiment, since the depths of the groove portions 7a, 8a of the pair of locking pieces 7, 8 of the support body 6 are different from each other, an error may occur when the support body 6 is assembled to the split case 1b. Therefore, there is no need to worry that the top and bottom will be inserted upside down, and workability and yield can be expected to improve. The diameter of the groove portions 7a and 8a may be changed so as to prevent the erroneous insertion of the support 6.

Furthermore, in the above-described embodiment, since the opening 2 extends over the split cases 1a and 1b, the area of the notch for the opening 2 of each split case 1a and 1b is small, and the casing 1 has a sufficient mechanical strength. The strength is secured. However, it is also possible to provide a large opening in the peripheral body portion of one of the split cases and allow the operation button to be exposed there.

Although the operation button 5 and the support 6 are integrally molded in the above embodiment, the separate operation button and support may be integrated by means such as bonding.

Further, the present invention relates to a push button structure, and is not limited to a pen type barcode scanner.

[Effect of device]

As described above, according to the present invention, the support member that supports the operation member and has flexibility in the operation direction can be made to stand on one split case of the casing.
A push button device can be realized in which the operating member is exposed at the mating part of both split cases of the casing and one-way assembly can be realized, and even if there is some dimensional error when assembled, it can be absorbed by the slit case. Without damaging the
The automation at the time of assembly becomes easy and mass production can be achieved, and the degree of freedom in design is widened, and operability and designability can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a pen-type barcode scanner according to an embodiment of the present invention, and FIG. 2 is an explanatory view showing a process of assembling the operation button of the barcode scanner into a split case. The figure is an exploded perspective view for explaining the basic structure of the pen-type barcode scanner. 1 ... Casing, 1a, 1b ... Split case, 2 ... Opening, 3,4 ... Engaging protrusion, 3a ... Tapered surface, 5 ... Operation button, 6 ... Support, 6a, 6b. Connection part, 7,8 ... Locking piece,
7a, 8a ... Groove part, 13a ... Tact switch.

Claims (1)

[Scope of utility model registration request] 1. A push button operation for accommodating a member to be operated inside a casing constituted by combining a pair of split cases, wherein an opening portion is formed at a mating portion of the pair of split cases so as to extend over each split case. An operating member exposed from the opening for pressing the operated member, a support supporting the operating member and having flexibility in an operating direction of the operating member, The split case is projected outward from the corresponding positions in the assembling direction of the split case, one extends along the circumferential direction of the inner wall surface of the one split case, and the other of the inner wall surface of the other split case. A pair of locking pieces extending along the circumferential direction, a slit provided in the operation member in a direction orthogonal to the locking pieces, and a pair of locking pieces projectingly provided on the inner wall of the one split case. Position one And a second engaging protrusion that fixes the first engaging protrusion and a second engaging protrusion that projects from the inner wall of the other split case to position and fix the other of the pair of locking pieces. A push button device, wherein a pair of locking pieces of the operating member are fitted by the first engaging protrusion and the second engaging protrusion of the case to hold the operating member.