JP3709208B2 - Cover mounting structure - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an attachment structure for attaching a cover to a case.
[0002]
[Prior art]
In a configuration in which box-shaped covers and cases are connected to each other to form a housing space for parts and stored items, these covers and cases are made into an engagement structure, and this engagement is inadvertently released. There is a case where it is necessary to provide a sealing function to make it impossible.
[0003]
For example, this box contains secret documents, recitation numbers, or functional parts and electronic circuits that prevent change, and the engagement of this box is broken and these secrets are inadvertently released. When the function is changed, a structure that can be easily determined from the appearance is preferable.
[0004]
For this purpose, a seal such as a low-strength paper is generally affixed to the joining surface of the case and the cover, and when the case and the cover are separated from each other, the seal is broken to change the appearance. There are many that detect this.
[0005]
However, if the case and cover are joined even if the seal is broken, or if another new or counterfeit seal is affixed, it is unclear whether the box was inadvertently opened or not. It may be clear.
[0006]
[Problems to be solved by the invention]
In consideration of the above facts, the present invention has an object to obtain a cover mounting structure that joins a case and a cover, makes it difficult to separate the case and the cover, and disables the joining after the separation.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 of the present application is a cover mounting structure for mounting a cover to a case, and includes a through-hole for insertion formed in one of the case and the cover, and the case and the cover. An arm formed on one of the two and inserted into the through hole, and formed of synthetic resin, positioned on one opening side of the through hole, and formed on the arm by an insertion operation of the arm into the through hole while in contact with blocking withdrawal movement of the case or cover has been protrusion, engaging arm case or cover is broken by the breaking or breaking root portion when moved in the removing direction, the other of the through-hole And, when the arm is inserted, the arm is elastically deformed to block the opening and prevent foreign matter from being inserted from the opening. .
The invention according to claim 2 of the present application is a cover mounting structure for mounting a cover to a case, wherein the insertion through-hole formed in one of the case and the cover, the case and the cover An arm formed on one of the two and inserted into the through hole, and formed of synthetic resin, positioned on one opening side of the through hole, and formed on the arm by an insertion operation of the arm into the through hole An engagement arm that is in contact with the projected protrusion and prevents movement of the case or cover in the detaching direction, and is destroyed when the case or cover moves in the detaching direction, and is located on the other opening side of the through hole, And a blocking means for elastically deforming the arm to close the opening and blocking foreign matter insertion from the opening when the arm is inserted.
[0009]
[Action]
In the invention of the present application, when attaching the cover to the case, when the cover is aligned with the case, one of the case and the cover, for example, an arm formed in the case is inserted into a through hole formed in the cover. . An engaging arm made of synthetic resin is provided on one opening side of the through hole, and is brought into contact with a protrusion formed on the arm by an insertion operation of the arm into the through hole. Accordingly, the movement of the case or the cover in the separation direction is prevented, and when the case or the cover moves in the separation direction, the root portion of the engagement arm is broken or broken to be broken . Further, a blocking means is provided on the other opening side of the through hole, and when the arm is inserted, the arm is elastically deformed to close the opening and prevent foreign matter from being inserted through the opening.
[0011]
【Example】
(overall structure)
1 and 2 show a mounting structure according to a first embodiment of the present invention. A circuit box 12 constituting control means is mounted on a set plate 16 via a display module 14 which is a display. . This set plate 16 is fixed in advance to a game board (gauge board) 18 of a pachinko machine by screwing, fitting or the like. As shown in FIG. 5, the display portion (bottom surface of FIG. 5) of the display module 14 is exposed through the display window 16 </ b> A formed on the set plate 16.
(Configuration of circuit box 12)
As shown in FIG. 3, the circuit box 12 has a box cover 22 which is a cover member and a box case 24 which is a base member, which are box-shaped with openings facing each other, and are integrally formed of synthetic resin. In addition, a control means body (not shown) such as a control circuit is accommodated in the combined interior.
[0012]
A notch 26 is formed in a part of the side of the box cover 22 so as to extend to the opening of the box cover. A wall 28 erected higher from the side wall of the box case 24 enters the notch 26 to close the notch 26. A sealing seal (not shown) is attached to the notch 26 and the wall 28.
[0013]
The connection structure between the box cover 22 and the box case 24 will be described. Two block portions 29 protrude from two positions on the opposite side of the outer periphery of the box cover 22, and a synthetic resin is inserted between these block portions 29. An anchor plate 32 made of metal is fixed. For this reason, a through-hole 32A is formed between the anchor plate 32 and the box cover 22 so as to communicate with the vertical direction of FIGS. These anchor plates 32 each have a cantilever arm 33 projecting integrally toward the side wall of the box cover 22, and a projecting portion of an arm 36 projecting parallel to the standing portion 34 of the box case 24. Corresponds to 36A. Therefore, when the box cover 22 is aligned with the box case 24, the side wall of the box cover 22 is inserted between the standing portion 34 and the arm 36 as shown by an arrow A in FIGS. As a result, the arm 33 and the projecting portion 36A of the arm 36 come into contact with each other, and one or both of them are elastically deformed away from each other, and when the amount of insertion reaches FIG. Is engaged with the protrusion 36 </ b> A of the arm 36, and the engagement state between the box cover 22 and the box case 24 is maintained. The width dimension (depth dimension in FIG. 4) of the arm 36 is substantially the same as the interval between the pair of block portions 29. Further, as shown in FIG. 3, on both sides of the standing portion 34, the standing portion 34 </ b> A protrudes from the side wall of the box case 24 at a right angle to the standing portion 34. And it inserts into the slit 29A in which the block part 29 was formed, and becomes for reinforcement.
[0014]
On the outer periphery of the box cover 22, a triangular protrusion 38 protrudes between the pair of block portions 29 corresponding to the arm 36 so as to narrow the opening size into the opening 32 </ b> A. The distance between the upper end (left end in FIG. 4) and the surface of the anchor plate 32 (right end in FIG. 4) is narrow and slightly larger than the upper end width of the arm 36. The box cover 22 is elastically deformed in a direction in which the vicinity of the tip end portion of the arm 36 is separated from the standing portion 34 as shown in FIG. This deformation may be plastic deformation, that is, permanent deformation. As a result, the arm 36 approaches or contacts the vicinity of the upper end portion of the anchor plate 32 and is interposed near the upper end portion of the through hole 32A between the anchor plate 32 and the side wall of the box cover 22 to close it. As a result, the space between the anchor plate 32 and the side wall of the box cover 22 is closed, and a jig such as a screwdriver cannot be inserted between them, and the operation of detaching the arm 33 from the protrusion 36A becomes impossible. . When the arm 36 is not elastically deformed or when the tip of the projection 36A is cut away, a driver or the like can be inserted between the anchor plate 32 and the side wall of the cover 22 to deform the anchor plate 32 or the like. Therefore, the engagement is released. In order to detach the box cover 22 from the box case 24 in a state where the box cover 22 and the box case 24 are joined together, the arm 33 must be broken by pulling it strongly upward in FIGS.
(Configuration of display module 14)
As shown in FIG. 5, the display module 14 includes a module cover 42 and a module case 44, which are divided into two parts and house a display main body (not shown) such as a liquid crystal inside when engaged. It is a box shape. The module cover 42 and the module case 44 have a box shape like the box cover 22 and the box case 24, and are integrally formed of synthetic resin.
[0015]
The module cover 42 has a plurality of mutually parallel elongated openings 46 formed on the top surface 42A. One end of each of the engagement openings 46 is a wide portion 46A, and a plurality of L-shaped projections 48 formed on the bottom surface of the box case 24 are inserted in the direction of arrow B, respectively. These L-shaped protrusions 48 are bent portions 48 </ b> B in which the tip of a base portion 48 </ b> A protruding at a right angle from the bottom surface of the box case 24 is bent at a right angle to be substantially parallel to the bottom surface of the box case 24. In this state, when the box case 24 is moved in the longitudinal direction of the L-shaped projection 48 (in the direction of arrow C in FIG. 5) so as to slide onto the surface of the module cover 42, the base portion 48A of the L-shaped projection 48 enters the engagement opening 46. The bent portion 48B at the leading end engages with the peripheral portion of the engagement opening 46 inside the module case 44 to prevent the box case 24 from being detached in the direction opposite to the arrow B direction. The L-shaped protrusion 48 is formed with a right-angle wall 48C that limits the amount of insertion of the box case 24 in the direction of arrow C. A part of the wide portion 46 </ b> A is also formed over the side surface of the module cover 42.
[0016]
When the box case 24 is engaged with the module cover 42 in this way, the substantially triangular engagement claw 52 shown in FIG. 6 is provided on the back surface of the box case 24 so as to prevent the movement in the direction opposite to the arrow C direction. Is formed. That is, an arm 54 in which only the base 54 A is integrally connected to the back surface of the box case 24 is formed by a substantially parallel slit 53 (see FIG. 3) formed from the upper end of the side wall of the box case 24. A claw 52 is formed. Accordingly, the arm 54 has an elastic force, and the box case 24 hits the module cover 42 by being inserted in the direction of the arrow C, is elastically deformed about the base 54A and is pushed into the box case 24, and the insertion amount in the direction of the arrow C When the value reaches a predetermined value, it enters into the recess 55 formed on the top surface of the module cover 42 and elastically returns to prevent the box case 24 from sliding in the direction opposite to the arrow C direction.
[0017]
The module cover 42 has an enlarged diameter portion 57 having an enlarged inner diameter in the vicinity of the opening, which is the lower end portion of FIG. 5, and the upper end portion of the side wall of the module case 44 is accommodated in the enlarged diameter portion 57. The module cover 42 and the module case 44 are adapted to each other. Details of the engaging means for maintaining the engaged state between the module cover 42 and the module case 44 are shown in FIG. That is, the arms 58 formed at three locations on the outer peripheral portion of the side wall of the module case 44 (the remaining two arms 58 are not visible because they are on the back side in FIG. 5) have their base portions integrated with the side wall of the module case 44. The lower end portion of the arm 58 corresponds to the middle portion of the fixed engagement arm 59 that is fixed to the side wall of the module cover 42, as shown in FIG. 7B. The module cover 42 is coupled to the module case 44. That is, as shown in FIG. 7A, when the module cover 42 is pressed in the direction of arrow D, the arm 58 hits the engagement arm 59 and elastically deforms, and when the amount of pressing reaches a predetermined value, the arm 58 returns elastically, and FIG. As shown in B), the lower end of the arm 58 is engaged with the upper surface of the engagement arm 59. Note that both legs of the U-shaped operation unit 60 are integrally connected to the lower end of the arm 58, and the arm 58 and the engaging arm 59 are operated by pushing the operation unit 60 leftward in FIG. And the module cover 42 can be removed from the module case 44.
[0018]
On the bottom surface of the module case 44, a combination of an engagement opening 46 formed on the top surface of the module cover 42 and an engagement opening 62 and a wide portion 62A having the same shape as the wide portion 46A is provided. Therefore, the circuit box 12 can be engaged with the bottom surface of the module case 44 after being removed from the top surface of the module cover 42. When the circuit box 12 is engaged with the bottom surface of the module case 44 using the L-shaped protrusion 48, the display surface of the display module 14 exposed from the opening 44A of the module case 44 is covered to protect the display surface. However, the engagement opening 62 and the wide portion 62A formed on the bottom surface of the module case 44 are opposite to the module cover 42 in the plan view of FIG. 5, and the insertion direction of the circuit box 12 is opposite (arrow F). Direction).
(Configuration of set plate 16)
As shown in FIG. 9, a pair of claws 64 protrude on the outer periphery of the side wall of the module cover 42 (the back side in FIG. 5), and the front end claw portion 65 </ b> A of the gate-type engagement arm 65 erected from the set plate 16. Is engaged. These engagement arms 65 are elastically deformed by hitting the claws 64 as the module cover 42 in FIG. 9A is pushed down in the direction of arrow E, and are elastically restored as shown in FIG. 9B with a predetermined insertion amount. And engages with the claw 65A. FIG. 9 illustrates only one of the pair of claws 64, and the other is disposed in the same vertical position and in the same shape in front of the paper surface of FIG. An engaging arm 66 projects from the module cover 42 to the outer periphery of the side wall opposite to the claws 64. The engaging arm 66 is fixed to the module cover 42 through the parallel wall 70 projecting to the outer periphery of the module cover 42, and the claw 66B at the upper end connects the lower end 66A. The center is elastically deformable to the left and right in FIG. The engagement arm 66 is engaged with the distal end claw 67A of the gate-type engagement arm 67 standing from the set plate 16 as shown in FIG. A combination of the 65 and the claw 64 constitutes a means for engaging the display module 14 with the set plate 16.
[0019]
A gate-shaped extension 68 is erected on the upper end of the engagement arm 66, and when the extension 68 is moved in a direction to approach the side wall of the module cover 42 by manual operation, the engagement arm 66 is engaged with the engagement arm 67. And the display module 14 can be detached from the set plate 16 while turning the display module 14 around the claw 64.
[0020]
The control device provided in the circuit box 12 is connected to a display body which is a display module including a liquid crystal display unit provided in the display module 14 by wiring (not shown).
[0021]
Next, the operation of this embodiment will be described.
The box cover 22 and the box case 24 accommodate the control means main body such as a circuit board in the interior thereof, and they are matched with each other, and the arm 36 is inserted into the opening 32A from below as shown in FIG. As a result of this insertion, the arms 33 and 36 come into contact with each other and are elastically deformed. When the amount of insertion increases, the arm 33 passes through the protrusion 36A, so that the elastic deformation moves in the releasing direction, as shown in FIG. Engage.
[0022]
At the same time, the triangular projection 38 deforms the vicinity of the tip of the arm 36 and presses it against the anchor plate 32, and is interposed in the upper end opening of the through hole 32A to close it. For this reason, foreign objects such as a screwdriver and other jigs can no longer be inserted into the through-hole 32A, and engagement becomes impossible. In general, the screw 32B for attaching the anchor plate 32 to the box cover 22 is covered with other adjacent parts and cannot be removed. However, if necessary, the anchor plate 32 is used for the box cover. It can be fixed to or integrally formed with 22 by means such as welding.
[0023]
As described above, since the box cover 22 is fixed to the box case 24, if the box cover 22 is forcibly removed from the box case 24, the arm 33 and the like will be destroyed, and the subsequent engagement will occur. Since it becomes impossible, it can be judged by appearance that it has been destroyed and the inside has been illegally changed. The box cover 22 and the box case 24 may be urged away from each other in order to further clarify the state in which re-bonding after destruction is impossible.
[0024]
Similarly, in the display module 14, the module cover 42 and the module case 44 are overlapped with each other and the arm 58 is engaged with the engagement arm 59 as shown in FIG. Thus, after the circuit box 12 and the display module 14 are unitized in a state in which the control means main body and the display main body are accommodated therein, the circuit box 12 is engaged with the display module 14.
[0025]
In this engagement, the circuit box 12 is overlapped in the direction of arrow B in FIG. 5 and the L-shaped projection 48 is inserted into the wide portion 46A and then moved in the direction of arrow C to move the engagement claw 52 of the arm 54 to the module cover 42. Fit into the recess 55. As a result, the circuit box 12 is easily and easily engaged with the display module 14. If the display module 14 is pressed toward the set plate 16 in the direction of arrow E in this state, the engagement arm 65 is engaged with the claw 64 as shown in FIG. 9, and the engagement arm 66 is engaged with the engagement arm 67 as shown in FIG. Engage. As a result, the liquid crystal display means in the display module 14 is exposed to the surface of the game board 18 through the opening 44A and the display window 16A, and the assembly is completed.
[0026]
If a failure occurs in the circuit box 12 or the display module 14, if the extension portion 68 of the module cover 42 is operated to approach the side surface of the module cover 42, the tip claw portion 66 </ b> A of the engagement arm 66 is moved. The display module 14 can be detached from the set plate 16 by releasing the engagement of the engagement arm 67 with the claw portion 67A. In this removed state, the arm 54 of the circuit box 12 can be pushed up to remove the engaging claw 52 from the recess 55, and the circuit box 12 can be detached from the display module 14. If the circuit box 12 is further engaged with the bottom surface of the module case 44 using the L-shaped projection 48, the display surface of the display module 14 is closed by the circuit box 12, so that the display surface during transportation is displayed. Will not be damaged. In order to prevent the L-shaped protrusion 48 from being detached from the engagement opening 62 in a state where the circuit box 12 is engaged with the bottom surface of the module case 44, a concave portion having the same shape as the concave portion 55 is formed on the bottom surface of the module case 44. ing.
[0027]
In the above embodiment, the combination of the L-shaped projection 48 and the engagement opening 46 and the combination of the engagement claw 52 and the recess 55 of the arm 54 are used as means for coupling the circuit box 12 to the display module 14. A structure similar to that for coupling the module 14 to the set plate 16 may be applied, and all other structures such as rails and hooks may be applied as long as the circuit box 12 is detachably attached to the display module.
[0028]
The circuit box and the display module can be engaged with each other in the direction perpendicular to the circuit box and the display module in the first embodiment (in the direction of arrow C). In addition, the present invention is not limited to pachinko gaming machines, and is not limited to housing electronic circuits and control means, but can be widely applied when a case and a cover are coupled.
[0029]
【The invention's effect】
Since the present invention has the above-described configuration, it is possible to obtain a cover mounting structure in which the case and the cover are coupled, the case and the cover are difficult to separate, and the coupling is impossible after the separation.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention.
FIG. 2 is a right side view of FIG.
3 is an exploded perspective view of the circuit box of FIG. 1. FIG.
4 is a cross-sectional view showing an engagement relationship between a box cover and a box case in FIG. 1. FIG.
FIG. 5 is an exploded perspective view showing the display module and set plate of FIG. 1;
6 is a cross-sectional view taken along line 6-6 of FIG. 1 showing an engagement portion of the circuit box to the display module.
7 is a cross-sectional view taken along the line 7-7 in FIG. 1, showing a mounting portion of the module cover to the module case.
8 is a cross-sectional view taken along line 8-8 of FIG. 1 showing a mounting portion of the module case to the set plate.
9 is a cross-sectional view taken along line 9-9 of FIG. 5 showing another attachment portion of the module case to the set plate.
[Explanation of symbols]
12 circuit box 14 display module 16 set board 18 game board 22 box cover (cover)
24 Box case
32A Through hole 33 Arm (engaging arm)
36 arms
38 Protrusion (blocking means)

Claims (2)

A cover mounting structure for mounting a cover to a case,
A through-hole for insertion formed in one of the case and the cover;
An arm formed on one of the case and the cover and inserted into the through hole;
Is molded of synthetic resin, together with the located one opening side of the through hole, abuts the protrusion formed on the arm insertion operation into the through hole of the arm to prevent disengagement movement of the case or cover An engagement arm whose root portion is broken or broken when the case or cover moves in the disengagement direction; and
A blocking means located on the other opening side of the through hole, and when the arm is inserted, the arm is elastically deformed to block the opening and prevent foreign matter from being inserted from the opening;
A cover mounting structure characterized by comprising: A cover mounting structure for mounting a cover to a case,
  A through-hole for insertion formed in one of the case and the cover;
  An arm formed on one of the case and the cover and inserted into the through hole;
  Molded with synthetic resin, located on one opening side of the through hole, abuts against the protrusion formed on the arm by the insertion operation into the through hole of the arm to prevent the case or cover from moving in the removal direction, An engagement arm that is destroyed when the case or cover moves in the disengagement direction;
  A blocking means located on the other opening side of the through hole, and when the arm is inserted, the arm is elastically deformed to block the opening and prevent foreign matter from being inserted from the opening;
A cover mounting structure characterized by comprising:

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