JP3112840U - Board fixing structure - Google Patents

Abstract

[PROBLEMS] To fix a substrate by using a groove and to have a simple structure, to firmly attach and fix a substrate to a housing without using a screw, to eliminate a screw, to reduce costs, and to perform a simple operation of the substrate. Provided is a mounting and fixing structure for a substrate which can be fixed and can improve productivity.
A housing 1 is made of synthetic resin, a pair of left and right wide bosses 2 are integrally erected on the housing 1, and grooves 3 opposite to each other are formed in the board mounting locations of the bosses. The lower side of the boss 3 is a flat surface, and the upper side is formed in two protruding locking claws 4 respectively. A cavity portion 5 is formed between the outer surface and the protruding latching claw 4 slightly opens outward when the substrate 6 is pushed along the inclined surface 4a. When the substrate 6 enters the groove, the protruding locking claw is formed. 4 returns inward, and the substrate 6 is mounted and fixed in the groove 3 of the pair of left and right bosses 2.
[Selection] Figure 1

Description

  The present invention relates to a substrate mounting and fixing structure in which a substrate is mounted and fixed to a housing.

  Conventionally, a plurality of screws have been used to attach and fix a substrate to a housing. However, since a plurality of screws are used, there is a problem that the cost is high, and it is troublesome to attach with screws, so that workability is poor and productivity is not good.

  The first prior art is shown in FIG. As shown in FIG. 3, this conventional board fixing structure has a hook member 103 on the other side of a plurality of boards 102A and 102B, one side of which is engaged and fixed to the engagement fixing portions 111 and 112 provided on the chassis 101. And a plurality of latching claws 131 and 132, which are fixed to the chassis 101 so as to be detachably latched. The plurality of adjacent substrates 102A and 102B are configured to be locked and fixed. (For example, refer to Patent Document 1).

  However, in this case, the substrates 102A and 102B are locked and fixed by the locking claws 131 and 132 of the hook member 103, and the substrate is not fixed using a groove.

  The second prior art is shown in FIGS. 4 (a) and 4 (b). As shown in FIGS. 4 (a) and 4 (b), the conventional printed circuit board mounting apparatus is configured such that one edge portion of the printed circuit board 204 is rotatably fitted by a fitting portion including ribs 202 and 203, and the other side. Are engaged by the hook portion 205. The ribs 206 of the hook portion 205 later contact the cover 207 attached to the chassis 201 to prevent the hook portion 205 from bending in the direction in which the printed circuit board 204 is detached. The chassis 201 is provided with a positioning boss 211 having a fitting projection 209 that can be fitted into a hole 208 in the vicinity of the other edge of the printed circuit board 204. (For example, refer to Patent Document 2).

  However, in this case, the printed board 204 is engaged and fixed by the hook portion 205, and the board is not attached and fixed by using a groove. There is also a problem that the structure is complicated.

  The third prior art is shown in FIGS. As shown in FIGS. 5 and 6, the fixing member of the conventional electronic circuit board is continuous with the elastically deformable foot 301a formed on the housing case 310 of the electronic circuit board 322, the foot 301a, and The substrate 322 is mounted on the substrate fixing claw portion 301 that includes a protrusion 301b protruding in the direction of the substrate 322 and fixes the substrate 322 to a predetermined mounting surface 324a by engaging the protrusion 301b with the substrate 322. When fixed to the mounting surface 324a, the substrate contact surface 301b1 in contact with the substrate 322 of the protrusion 301b and the substrate 322 form a predetermined angle. (For example, refer to Patent Document 3).

However, in this case, the electronic circuit board 322 is engaged and fixed by the board fixing claw portion 301 and is not fixed by using the groove.
JP 2001-119170 A Japanese Utility Model Publication No. 7-36491 JP 2003-229682 A

  The present invention has been made in view of the above-described conventional problems. The substrate can be fixed using a groove, and the structure is simple. The substrate is firmly attached and fixed to the housing without using screws. An object of the present invention is to provide a board mounting and fixing structure that can eliminate the screws and reduce the cost, and can mount and fix the board by a simple operation to improve productivity. .

  The present invention has been proposed in order to solve the above-mentioned problems, and the device according to claim 1 is a board mounting and fixing structure in which a board is mounted and fixed to the casing. A pair of left and right wide bosses are integrally formed upright on the housing, and grooves facing each other are formed in the board mounting locations of these bosses. The upper side is formed in two protruding locking claws, and the inner side of these protruding locking claws is inclined from the upper part to the lower part, between the groove and the outer surface of these bosses. A cavity is formed, and when the substrate is pushed in from the upper side along the inclined surface, the protruding locking claw opens slightly, and when the substrate enters the groove, the protruding locking claw Returning inward, the board is fixed in the grooves of the left and right bosses It is characterized in that the the As.

  According to a second aspect of the present invention, there is provided a board mounting and fixing structure in which a board is mounted and fixed to a housing, and a pair of left and right wide bosses are erected on the housing, and the board mounting locations of these bosses are mutually attached. Opposing grooves are perforated, and the lower side of these grooves is a flat surface, and the upper side is formed in a total of at least three protruding locking claws. The substrate is inclined from the upper side along the inclined surface and is fixedly mounted in the pair of left and right grooves.

  According to a third aspect of the present invention, in the second aspect of the present invention, the second substrate is attached and fixed to the upper end surfaces of the pair of left and right bosses.

  According to the first aspect of the present invention, the substrate can be attached and fixed by pushing the substrate into the grooves of the pair of left and right wide bosses provided in the housing. Since the upper side of the groove is formed by two protruding locking claws, the board can be firmly attached and fixed by the protruding locking claws. Also, since the boss is formed of synthetic resin and the cavity is formed in the boss, the protruding locking claw can be opened outward when the substrate is pushed in from the inclined surface of the protruding locking claw. When the protrusion enters the groove, the protruding locking claw returns to the inside, and the substrate can be easily and firmly attached and fixed in the groove. Further, since the substrate can be mounted and fixed in a state where the substrate is placed on the lower plane of the groove, the substrate can be mounted and fixed in a stable state. In addition, since the substrate can be attached and fixed to the housing without using screws, the screws can be deleted, the cost can be reduced, and the structure can be simplified. Moreover, since the mounting can be fixed simply by pushing the substrate, the mounting operation can be easily performed, and the productivity can be improved.

  According to the second aspect of the present invention, the substrate can be mounted and fixed by pushing it along the inclined surface of the projecting locking claw, so that the mounting and fixing work is simple and the productivity can be improved. Since the board | substrate inserted in the groove | channel is latched by the protrusion latching claw, a board | substrate can be firmly attached and fixed. Further, since the substrate is mounted in a state of being placed on the lower plane of the groove, the substrate can be held in a stable state. In addition, since the substrate can be attached and fixed to the housing without using screws, the screws can be deleted, the cost can be reduced, and the structure can be simplified.

  According to the third aspect of the invention, the second substrate can be attached and fixed to the upper end surfaces of the pair of left and right bosses, so that the upper and lower two substrates can be attached and fixed to the same housing.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a substrate mounting and fixing structure according to the present invention will be described with reference to the drawings.

  1A and 1B show a first embodiment of a substrate mounting structure according to the present invention, in which FIG. 1A is a front longitudinal sectional view of a state where a substrate is mounted and fixed, and FIG. 1B is a partial plan view of a state where the substrate is mounted and fixed. .

  As shown in FIGS. 1 (a) and 1 (b), the board mounting and fixing structure according to the first embodiment has a pair of left and right wide bosses 2 and 2 erected integrally with a casing 1 made of synthetic resin. In addition, grooves 3 and 3 facing each other are formed in the board mounting positions of these bosses 2 and 2. The lower side of the grooves 3 and 3 is formed in a flat surface, and the upper side is formed in two protruding locking claws 4 and 4 respectively, and the inner sides of these protruding locking claws 4 and 4 are directed from the upper side to the lower side. Are formed on the inclined surfaces 4a and 4a. Two hollow portions 5 are formed between the grooves 3 and 3 of the bosses 2 and 2 and the outer surface.

  When the substrate 6 is pushed in from the upper side between the left and right protruding locking claws 4, 4, the substrate 6 comes into contact with the inclined surfaces 4 a, 4 a of the protruding locking claws 4, 4, and the protruding locking claws 4, 4 are outside. And the substrate 6 enters the grooves 3 and 3 of the pair of left and right bosses 2 and 2. At this time, the projecting and locking claws 4 and 4 return to the inner side, the substrate 6 is locked, and is fixedly mounted in the grooves 3 and 3 of the bosses 2 and 2.

  Therefore, according to the first embodiment, when the substrate 6 is pushed into the grooves 3 and 3 of the pair of left and right wide bosses 2 and 2 provided in the housing 1, the upper side of the grooves 3 and 3 is two each. Therefore, the board 6 can be firmly attached and fixed by the protruding locking claws 4 and 4. Further, since the bosses 2 and 2 are formed of synthetic resin and the bosses 2 and 2 are formed with the hollow portions 5, when the substrate 6 is pushed in from the inclined surfaces 4a and 4a of the protruding locking claws 4 and 4, When the projecting latching claws 4 and 4 are opened to the outside and the substrate 6 enters the grooves 3 and 3, the projecting latching claws 4 and 4 return to the inside so that the substrate 6 can be easily placed in the grooves 3 and 3. In addition, it can be firmly attached and fixed. Further, since the substrate 6 can be mounted and fixed on the lower plane of the grooves 3 and 3, the substrate 6 can be mounted and fixed in a stable state. Moreover, since the board | substrate 6 can be attached and fixed to the housing | casing 1 without using a screw, a screw can be deleted and a cost reduction can be aimed at, and the structure can be simplified. In addition, since the substrate 6 can be attached and fixed simply by being pushed in, the attaching operation can be easily performed, and the productivity can be improved.

  FIG. 2 is a front longitudinal sectional view showing the mounting and fixing structure of the substrate according to the second embodiment. In addition, the same code | symbol is attached | subjected to the same member and the same location as above-mentioned 1st Embodiment, and the description is abbreviate | omitted.

  As shown in FIG. 2, the board mounting and fixing structure of the second embodiment has a structure in which the board 6 is mounted and fixed in the grooves 3 and 3 of the pair of left and right bosses 2 and 2. A second substrate 6A is attached and fixed to the upper end surfaces 2a and 2a with screws 7.

  According to the second embodiment, according to the second embodiment, the second substrate 6A can be attached and fixed to the upper end surfaces 2a, 2a of the pair of left and right bosses 2, 2. The two substrates 6 and 6A can be attached and fixed.

1A and 1B show a first embodiment of a substrate mounting structure according to the present invention, in which FIG. 1A is a front longitudinal sectional view of a state in which a substrate is mounted and fixed, and FIG. It is a front longitudinal cross-sectional view which shows the attachment fixing structure of the board | substrate of 2nd Embodiment. It is a longitudinal cross-sectional view which shows the fixing structure of the conventional board | substrate. A conventional printed circuit board mounting apparatus is shown, (a) is a longitudinal sectional view showing a state where a substrate is attached, and (b) is a longitudinal sectional view showing a state in the middle of attaching the substrate. It is a longitudinal cross-sectional view which shows the fixing member of the conventional electronic circuit board. It is a longitudinal cross-sectional view which shows the state which attached the board | substrate using the fixing member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Boss 2a Upper end surface 3 Groove 4 Projection latching claw 4a Inclined surface 5 Cavity part 6 Substrate 6A Second substrate 7 Screw

Claims (3)

  In the substrate mounting and fixing structure in which the substrate is mounted and fixed to the housing, the housing is formed of a synthetic resin, and a pair of left and right wide bosses are erected integrally with the housing. Grooves facing each other are drilled in places, the lower side of these grooves is a flat surface, and the upper side is formed in two protruding locking claws, and the inner side of these protruding locking claws is from top to bottom The cavity is formed between the groove and the outer surface of these bosses, and when the substrate is pushed in from the upper side along the inclined surface, the protruding locking claw is outside. When the substrate enters the groove, the protruding locking claw returns inward so that the substrate is fixedly mounted in the groove of the pair of left and right bosses. A feature of mounting and fixing the board.   In the board mounting and fixing structure in which the board is mounted and fixed to the housing, a pair of left and right wide bosses are erected on the housing, and grooves facing each other are formed in the board mounting locations of these bosses. The lower side of these grooves is a flat surface, and the upper side is formed in at least three protruding locking claws, and the inner side of these protruding locking claws is inclined from the top to the bottom. A mounting and fixing structure for a substrate, wherein the substrate is pushed in from the upper side along the inclined surface to be fixed in the pair of left and right grooves.   The board mounting and fixing structure according to claim 2, wherein the second board is mounted and fixed to upper end surfaces of the pair of left and right bosses.