JPS593501Y2 - Terminal board mounting structure - Google Patents

Description

[Detailed description of the invention] The present invention relates to a terminal board mounting structure, in which the terminal board inserted into the groove of the case body is clamped and fixed by elastic deformation of the groove periphery when the case cover is attached, making the installation easy and strong. The purpose is to provide a mounting structure that will

The conventional terminal board mounting structure is applied, for example, to the terminal board of a timer, where one end of the terminal board has contacts for turning the motor on and off, and another elastic board is attached to the terminal part of the other end of the terminal board with one end slightly open. Insert the terminal part into the groove formed on the side plate of the case body with the elastic plate close to the terminal plate side, so that the terminal part and the elastic plate relatively touch the inner side wall of the groove part. The terminal plate was temporarily fixed by being pressed elastically, and a case cover attached to the upper surface of the case body came into contact with the upper end of the terminal plate to prevent the terminal plate from floating and fix the terminal plate.

However, according to the above conventional example, the locking force of the terminal plate itself is relatively small due to only the elastic force of the elastic plate, and furthermore, due to the structure, a gap is formed between the terminal plate and the inner wall on the groove side. Coupled with the fact that the length of the part of the terminal board that is inserted into the groove is shorter than the overall length of the terminal board, this can cause looseness in the operation of the terminal board, or the terminal board may become misaligned due to impact, etc., and the contact switching function may be affected. The disadvantage was that it was damaged.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

Figures 1 to 3 are each one of the terminal board mounting structures of the present invention.
FIG. 2 is a perspective view of the main part of the case top lid, the terminal board, and the main part of the case body of the timer to which the embodiment is applied.

In the figure, the case top lid 1 has a pair of recesses 3a on the lower surface of the side plate 2,
3b, and a - convex portion 4 (width dimension a) is formed in the center thereof.

Convex step portions 5 a are provided at the rear of the recesses 3 a and 3 b, respectively.
, 5b are integrally formed, and the dimension between the opposing surfaces of the stepped portions 5a and 5b is b, and the dimension between the opposing surfaces of the recessed portions 3a and 3b is C.
shall be.

The terminal board 6 has a contact part 7 at one end that turns on and off a timer motor (not shown), and a terminal part 8 at the other end which protrudes rearward in a predetermined position with a semicircular cross section. Convex portion 9a of
, a pair of convex portions 9b, 9C protruding forward in the figure on both sides thereof.
are formed integrally with each other.

Further, on the lower surface of the terminal portion 8, there are a pair of engaging convex portions 10a, 10.
b are formed with a predetermined distance apart.

The case body 11 is provided with a groove 14 extending in a direction orthogonal to the side plate 12 at the upper part of a terminal mounting block 13 formed at a predetermined position of the side plate 12, and has relatively side wall portions 15a and 15b.
is formed.

A pair of thin pressed parts 21a and 21b are integrally formed on the outside of each side wall part 15a and 15b, extending upward in the figure.

The pressed parts 21a and 21b each have a pair of protrusions 22a and 22b facing each other with a distance equal to the width of the groove part 14, a pair of recesses 23a and 23b, and a pair of cross-sections. Shaped portions 24a and 24b are formed, respectively, and a retaining groove portion 25 having a semicircular cross section is formed in the vertical direction on the front surface of the convex portion 22a.

Furthermore, if the dimension between the opposing surfaces of the recesses 23a and 23b is a', the dimension between the outer surfaces of the pressed parts 21 a and 21 b (7) is b', and the dimension between the outer surfaces of the single-shaped parts 24 a and 24 b is C'. ,
There is a relationship of a'>a, b'<b, c'>C.

Next, the procedure for assembling the above-mentioned parts 1, 6 and 11 will be explained.

First, in order to attach the terminal plate 6 to the case body 11, the terminal portion 8 is inserted into the groove portion 14 from above with the convex portion 9a engaged with the engagement groove portion 25.

At this time, as shown in FIG.
4, the terminal part 8 is lightly press-fitted into the groove part 14 while elastically deforming the front inner surface thereof, and the lower surface of the terminal part 8 comes into contact with the bottom surface of the groove part 14, and the pair of engagement protrusions 10 a and 10 b are inserted into the groove part 14 , respectively. Both ends engage the lower part of the outer surface.

In this way, the terminal plate 8 is firmly positioned in the longitudinal direction by the engagement of the protrusion 9a and the engagement groove 25, and by the engagement of the protrusions 10a, 10b and both outer end surfaces of the groove 14. By press-fitting 9b and 9C, it is temporarily fixed even if it comes off upward.

Next, in order to attach the case cover 1 to the case body 11, the side plate 2 is placed opposite to the side plate 12 as shown in FIG. b are L-shaped portions 24 a and 24 , respectively.
b and press downward while fitting the stepped portions 5 a and 5 b correspondingly to the outer surfaces of the pressed portions 21 a and 21 b, respectively, to bring the lower surface of the side plate 2 into contact with the upper surface of the side plate 12.

Then, from the relationship of the dimensions b'<b, c'>c, the pressed parts 21a and 21b are not in contact with the step parts 5a and 5b and do not receive any restraining force, but the single-shaped parts 24a and 24b are recessed parts. 3
a and 3b, and are pressed and elastically deformed inward.

Therefore, the pressed parts 21 a and 21 b integrally connected to the single-shaped parts 24 a and 24 b are also elastically deformed inward by a predetermined amount.

Therefore, both side wall portions 15 a and 15 b of the groove portion 14 are also elastically deformed by a predetermined amount toward each other.

As a result, the terminal portion 8 of the terminal board 6 has grooves 14 on both sides thereof.
It is firmly pressed and clamped by both side walls 15a and 15b, and the convex part 4 is brought into contact with the upper surface of the terminal part 8 to prevent it from coming off upward and to be firmly fixed.

In addition, if a negative convex portion is further provided behind the convex portion 4 of the side plate 2 of the case cover 1 so as to come into contact with the upper surface of the terminal portion 8, the terminal portion 8 can be pulled out upward at two locations on both ends of the groove portion 14. This makes the installation of the terminal board 6 even more stable.

When installing the side plate 2, the convex portion 4 is connected to the concave portions 23a and 23b.
Since the width dimension is sufficiently small (a (a')), there is no need for contact between the inner surfaces of the convex part 4 and the concave parts 23 a and 23 b, and there is no interference despite the elastic deformation of the pressed parts 21 a and 21 b. Does not occur.

Further, in the above embodiment, when the side plate 2 is attached, the single-shaped portion 24
a, 24 b and the recesses 3a, 3b are in contact c')c
) and the pressed parts 21a, 21b and the stepped parts 5a, 5
b has a non-contact configuration (b'<b), but on the contrary, the dimensional relationship is set to b'>b and c'<c, and the pressed part 21a,
21b is elastically deformed inward due to contact restriction by the stepped portions 5a and 5b, and the single-shaped portions 24a, 24b and the recessed portion 3
Similar results can be obtained with a and 3b in a non-contact configuration.

It goes without saying that the terminal plate mounting structure described above can be applied to various electrical devices having terminal plates other than timers.

As described above, according to the terminal plate mounting structure of the present invention, the terminal plate is inserted into the groove formed on the side of the case body and extends approximately orthogonally to the side plate, and the case cover is formed on the bottom surface of the groove. It is attached to the case body so that the inner side surfaces of the recess are press-fitted to the outer surfaces of a pair of protrusions integrally formed on both side walls of the groove, and the pair of protrusions and both side walls are relatively connected to each other. Since the terminal board is elastically deformed so as to be close to each other and the terminal board is clamped and fixed, both sides of the terminal board are pressed and clamped over substantially the entire surface of the inner side walls of the groove within the groove. The plate is extremely stably and firmly attached, and the contact switching function can be improved without any movement of the terminal plate due to looseness or impact, and it has the advantage of being extremely easy to assemble.

[Brief explanation of the drawing]

Figures 1 to 3 are each one of the terminal board mounting structures of the present invention.
FIG. 4 is a perspective view of the main parts of the case cover, the terminal board, and the main part of the case body of the timer to which the embodiment is applied. FIG. 1...Case cover, 3a, 3b, 2
3 a, 23 b ・-・・・Concave portion, 4.9 a
~9C, 22a, 22b--convex portion, 5a
, 5 b...Step part, 6...Terminal board, 8
...Terminal section, 10a, 10b...
・Engagement convex portion, 11...Case body, 14...
...Groove portion, 15a, 15b...Both side wall portions, 2
1 a, 21 b...Pressed part, 24 a
, 24 b... L-shaped portion, 25... Engagement groove portion.

Claims (1)

[Scope of utility model registration request] A terminal plate is inserted into a groove formed in a side plate of a case body extending substantially orthogonally to the side plate, and the inner side surfaces of a recess formed on the lower surface of the case cover are integrally formed with both side walls of the groove. It is attached to the case body so as to be press-fitted to each outer surface of the pair of protrusions, and the terminal plate is clamped and fixed by elastically deforming the pair of protrusions and both side walls so that they approach each other relatively. Terminal board mounting structure as a configuration.