JP2876936B2 - Circuit board holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit board holder such as an automatic bread maker having a circuit board in a main body.

[0002]

2. Description of the Related Art Conventionally, this type of circuit board holder is shown in FIG.
Alternatively, the structure was as shown in FIG. That is, in FIG. 1, reference numeral 1 denotes a rectangular pedestal portion on which the circuit board 2 is mounted. Around the pedestal portion 1, a frame portion 3 covering the outer periphery of the circuit board 2 is provided so as to be continuous with the pedestal portion 1. . A side wall 4 is formed upward on one of the long sides 3a of the frame portion 3 to block heat from a heater case (not shown). Also,
On the other long side 3b and one short side 3c of the frame 3, holding claws 5b, 5c for holding the circuit board 2 on the pedestal 1 are provided. Reference numeral 6 denotes a screw for fixing the circuit board 2 and the like to a chassis (not shown).

[0003] Further, in FIG.
A holding claw 5a having the same shape as b and 5c is also provided on the side wall 4.

[0004]

However, in the above-described conventional configuration shown in FIG. 6, the circuit board 2 has two holding claws 5.
Since only three sides of the circuit board 2 are held at b, 5c and the screw 7, there is a problem that the circuit board 2 comes off from the circuit board holder when the impact such as dropping is received, and the circuit board 2 is damaged. Was.

In the configuration shown in FIG.
Since a, 5b, and 5c are provided and four sides of the circuit board 2 are held, the circuit board 2 does not come off from the circuit board holder even if it receives a drop impact. However, when the circuit board 2 is set on the pedestal 1, the circuit board 2
Is inserted, the circuit board 2 rides on the holding claws 5a and 5b. Then, the circuit board 2 is pressed downward to hold the holding claws 5.
The circuit board 2 tilts depending on the place to be pressed when fitting to a and 5b, and a state occurs in which the circuit board 2 is fitted to only one of them. In order to surely set the circuit board 2 on the pedestal portion 1, it is necessary to press two portions close to the holding claws 5a and 5b, resulting in a problem that the setting work is troublesome. .

The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to set a circuit board on a pedestal portion by holding four sides of the circuit board and holding down one place of the circuit board. It is the purpose of 1.

Second, when the circuit board is set on the pedestal, the circuit board is imperfectly fitted with the guide claw so that the circuit board enters under the guide claw before the holding claw. The purpose is to prevent it.

A third object of the present invention is to make it easier to lower the circuit board downward when setting the circuit board on the base.

A fourth object of the present invention is to tilt the circuit board so that the guide pawl side is lowered when setting the circuit board, so that the circuit board can be inserted under the guide pawl with a light force. .

[0010]

In order to achieve the first object, the present invention provides a rectangular pedestal on which a circuit board is mounted and a frame connected to the pedestal and covering the outer periphery of the circuit board. A side wall provided by extending one of the long sides of the frame portion upward, and a holding portion provided on one of the long side and the short side of the frame portion opposite to the side wall to hold the circuit board on the pedestal portion A claw, and a guide claw provided on the side wall for guiding placement of the circuit board on the pedestal portion and holding the circuit board on the pedestal portion, wherein the guide claw has a triangular shape when viewed from a plan view direction. And a vertex of a triangle of the guide claw is arranged on a side far from a short side of the frame portion having the holding claw.

In order to achieve the second object, the guide claw is disposed at a position farther than a position where the holding claw on the longer side of the frame is located with respect to the holding claw on the shorter side of the frame.

In order to achieve the third object, a vertical side extending vertically upward from a lower end of the guide claw is formed on a side including a vertex of a triangle of the guide claw. .

Further, in order to achieve the fourth object, the vertical side of the guide claw is extended to a position higher than the upper end of the holding claw on the longer side of the frame portion, and the inclined surface connected above the vertical side is formed. It is formed on the side wall.

[0014]

According to the present invention, the four sides of the circuit board are held by the above-described structure, and only one position of the circuit board is pressed.
The circuit board can be set on the base.

In addition, the guide claw is located farther from the holding claw on the short side of the frame than the holding claw on the long side of the frame.
When the circuit board is set on the pedestal portion, the circuit board enters below the guide claw before the holding claw, and it is possible to prevent the circuit board from being incompletely fitted with the guide claw.

Since the vertical side extending vertically upward from the lower end of the guide claw is formed on the side including the apex of the triangle of the guide claw, the circuit board can be set on the base when the circuit board is set. It can be easily set downward and easy to set.

Further, the vertical side of the guide claw is extended to a position higher than the upper end of the holding claw on the longer side of the frame portion, and the inclined surface connected to the upper side of the vertical side is formed on the side wall. The guide claw can be tilted so that the guide claw side is lowered, and can be inserted under the guide claw only by pressing the circuit board with a light force.

[0018]

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

1 and 2, reference numeral 11 denotes a rectangular pedestal portion on which a circuit board 12 is placed. It is provided. One of the long sides 13 of the frame portion 13
A has a side wall 14 formed upward, thereby blocking heat from a heater case (not shown).
Also, one of the other long side 13b and short side 13b of the frame portion 13
3c is provided with holding claws 15b and 15c for holding the circuit board 12 on the pedestal portion 11. Reference numeral 16 denotes a screw for fixing the circuit board 12 and the circuit board holder to a chassis (not shown). The side wall 14 is provided with a guide claw 18 for guiding the circuit board 12 to the pedestal portion 11 for holding. The guide claw 18 has a triangular shape when viewed from the plan view direction, and is formed such that the vertex 18a of the guide claw 18 is located far from the short side 13c.

Next, the operation of setting the circuit board 12 on the circuit board holder of the embodiment will be described. First,
When the circuit board 12 is tilted obliquely and placed under the holding claws 15 c and the circuit board 12 is lowered, the circuit board 12 hits the guide claws 18. Here, since the guide claw 18 is formed in a triangular shape and the vertex 18a of the guide claw 18 is located farther from the short side 13c, the circuit board 12 is laterally pushed out to the holding claw 15b side. Ride on the inclination holding claw 15b and the long side 13b. When a force is applied obliquely to the portion a of the circuit board 12 so as to eliminate the horizontal inclination of the circuit board 12 and insert the circuit board 12 under the holding claw 15b, the circuit board 12 slides down on the long side 13b. At the same time circuit board 1
2 tries to get under the guide claw 18. Then, since the guide claw 18 is formed in a triangular shape, the circuit board 12 can be sunk under the guide claw 18 as long as the guide claw 18 is exceeded.
Are pressed and held by the guide claws 18 and the holding claws 15b and 15c. Therefore, the circuit board 12 can be set on the pedestal section 11 only by holding down one place. Further, since the four sides of the circuit board 12 are held, the circuit board 12 becomes strong against a drop impact.

Embodiment 2 Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. The description of the same components as those described above is omitted.

In the second embodiment shown in FIG. 3, the holding claws 15c
The guide claw 18 is arranged at a position farther than the position where the holding claw 15b is located. Thereby, the circuit board 1
When the force is applied to the portion a of FIG. 2, the circuit board 12 moves around the portion contacting the short side 13c as a fulcrum, so that the circuit board 12 enters under the guide claw 18 before it goes under the holding claw 15b, and Fit. The guide claw 18 side is the side wall 14
Is provided, the circuit board 12 rides on the guide claw 18, but it is difficult to understand. However, according to the present embodiment, the circuit board 12 is inserted from the guide claw 18 side, so that the incompletely fitted state is prevented. Can be.

(Embodiment 3) Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.

In the third embodiment shown in FIG. 4, a vertical side portion 18b extends vertically from the lower end of the guide claw 18 upward.
Are provided on the side of the guide claw 18 including the apex 18a of the triangle. As a result, when a force is applied to the portion a of the circuit board 12, the circuit board 12 tends to lower, but the vertical side 1
Since the guide claw 8b is provided, the guide claw 18 side can go under the guide claw 18 simply by going straight down. When the vertical side 18b is not provided and the inclined surface is used, the circuit board 12 is hardly lowered because a force acts on the side opposite to the direction in which the circuit board 12 is pushed, but the vertical side 18b is provided so that the circuit board 12 can be easily lowered. It can be easier to do.

(Embodiment 4) Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings.

In the fourth embodiment shown in FIG.
b is extended to a position higher than the upper end of the holding claw 15b,
An inclined surface 18c connected to the extended vertical side portion 18b is formed on the side wall 14. As a result, the circuit board 12 is inclined and inserted under the holding claws 15c.
When the frame board 13 is lowered, the circuit board 12 is largely inclined in the lateral direction and falls down because the frame 13 and the circuit board 12 hit the inclined surface 18c when the fitting is shallow. Then, the circuit board 12 rides on the long side 18b on the side closer to the holding claw 15c and descends, so that the circuit board 12 is inclined so that the guide claw 18 side is lowered. When a force is applied to the portion a of the circuit board 12 in this state, the circuit board 12 is inclined, so that the circuit board 12 can be inserted under the guide claw 18 with a small force.

[0027]

As apparent from the above description, according to the present invention, a guide claw having a triangular shape as viewed from the plan view is provided on a side wall provided by extending a frame covering the outer periphery of the circuit board upward. By setting the triangular vertices of the guide claw far from the short side of the frame with the holding claw, the circuit board is set on the pedestal by holding the four sides of the circuit board and holding down only one place of the circuit board. It is something that can be done.

Further, since the guide claws are arranged at positions farther than the holding claws on the long side of the frame portion with respect to the holding claws of the short knitting portion of the frame portion, when the circuit board is set on the pedestal portion, the guide claws are positioned ahead of the holding claws. As a result, the circuit board can be inserted under the guide claw, thereby preventing the circuit board from being incompletely fitted with the guide claw.

Since the vertical side extending vertically upward from the lower end of the guide claw is formed on the side including the apex of the triangle of the guide claw, the circuit board is set when the circuit board is set on the base. It can be easily set downward and easy to set.

Further, the vertical side of the guide claw is extended to a position higher than the upper end of the holding claw on the longer side of the frame portion, and the inclined surface connected to the upper side of the vertical side is formed on the side wall. The guide claw can be tilted so that the guide claw side is lowered, and can be inserted under the guide claw only by pressing the circuit board with a light force.

[Brief description of the drawings]

FIG. 1 is a perspective view of a circuit board holder according to a first embodiment of the present invention.

FIG. 2 is a plan view of the circuit board holder.

FIG. 3 is a plan view of a circuit board holder according to a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a circuit board holder according to a third embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a circuit board holder according to a fourth embodiment of the present invention.

FIG. 6 is a perspective view of a circuit board holder showing a first conventional example.

FIG. 7 is a perspective view of a circuit board holder showing a second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Pedestal part 12 Circuit board 13 Frame part 13a, 13b Frame part long side 13c Frame part short side 14 Side wall 15b, 15c Holding claw 18 Guide claw 18a Triangular vertex of guide claw 18b Vertical side part 18c Inclined surface

Claims (4)

(57) [Claims] A rectangular base for mounting a circuit board, a frame connected to the base to cover the outer periphery of the circuit board, and one of long sides of the frame extending upward. A side wall provided, holding claws provided on one of the other long side and short side of the frame section for holding the circuit board on a pedestal section, and placing the circuit board on the pedestal section provided on the side wall And a guide claw for guiding the circuit board on a pedestal portion, and the guide claw has a triangular shape when viewed from a plan view direction,
A circuit board holder having a triangular vertex of the guide claw arranged on a side farther than a short side of a frame portion having the holding claw. 2. The circuit board holder according to claim 1, wherein the guide claw is arranged at a position farther than a position where the holding claw on the long side of the frame is located with respect to the holding claw on the short side of the frame. 3. The circuit board holder according to claim 1, wherein a vertical side portion extending vertically upward from a lower end of the guide claw is formed on a side including a vertex of a triangle of the guide claw. 4. The circuit according to claim 3, wherein a vertical side portion of the guide claw is extended to a position higher than an upper end of the holding claw on the longer side of the frame portion, and an inclined surface extending above the vertical side portion is formed on the side wall. Substrate holder.