JPH02135798A - Method of attaching small component to apparatus - Google Patents

Abstract

PURPOSE:To improve operability by providing parts to be providing a part that makes elastic displacement in a mounting plate face direction and another part in a direction perpendicular to the plate face on the mounting plate, and elastically engaging the with the retainer of a board. CONSTITUTION:Parts 33 to be displaced in a mounting plate face direction and a direction perpendicular to the plate face are provided on a mounting plate 29, and elastically engaged with the retainer 21 of a board 20. Accordingly, when the plate 29 is mounted on the board 20, one elastic displacement part 33 is brought into contact with the mounting seat 21 of the board to apply a separating force from the seat 21 to the plate, and the other elastic displacement part 33 supports the plate 29 in the plate face direction. Thus, the attachment work can be facilitated.

Description

[Detailed description of the invention] <Industrial application field> The present invention is applicable to, for example, a printer device or a copying device.

In the case of a fax machine cap, the method of attaching small parts such as a motor and a power supply unit to the chassis, frame, etc. of the machine is concerned.

<Prior art> When fixing various small parts to a base consisting of the chassis, frame, etc. of the equipment mentioned above, the mounting is done using brackets, such as plates, in accordance with the conditions such as the shape of the equipment base. There is a thing.

In this case, a method is provided that uses elastic engagement to attach the small parts. And because of this elastic engagement,
Many substrates are often made of plastic.

FIG. 5 shows the conventional attachment of small parts to a base using a part of printer equipment as an example.

In the figure, a floor base 21 and a site base 2 of the printer device are integrally formed of plastic. Reference numeral 3 denotes a motor as a small component, which engages a pinion 3a of the motor shaft with a platen gear 4 fitted to a rotating shaft of a platen (not shown), and rotates the platen by an appropriate pitch in response to a predetermined signal. The motor 3 is attached to the site base 2 by means described below. A plate 5 is fixedly attached to the rear surface of the motor 3 as a bracket for attaching it to the site base 2. For installation, the plate 5 is a flat metal plate, and there are engaging pieces 5 on both sides of the lower side of the installation.
a and 5a (in the figure, one side is exposed -C) are made to protrude, and a guide hole 5b is bored in a part of the upper side.

A link-shaped peripheral seat 6 and a central seat 7 are formed on the site base 2 in order to support the motor 3 through a mounting plate 5. A positioning hole 8.8 is formed below the peripheral seat 6 and on the upper surface of the floor base 1 to receive the retaining pieces 5a, 5a of the plate 5 for the above-mentioned installation. 9
is a guide boss projected above the peripheral seat 6 of the side base 2, and the motor 3, that is, the mounting plate 5
Attachment is sometimes done by inserting the guide hole 5b.

] O is a locking pawl, which protrudes above the guide post 9, and is sometimes received by hooking the L side 5C of the plate 5. Reference numeral 11 is a resilient material such as a rubber material or a plate spring material, and the material is interposed between the plate 5 and the central seat 7 of the size 1~); B2.

In such a configuration, when attaching the motor 3 to the base plate 2 to the size 1, attach the plate 5 to the motor 3 in advance.
I'll wear L. Then, install the fixing piece 5 to (play) 5.
a, 5a into the positioning hole 8.8 of the sight base 2, then with the explosive material +1 mounted on the central seat 7, align the kite hole 5b of the plate 5 with the kite post 9 and insert it. . This insertion allows the installation to be done on plate 5.
The h side 5C pushes the locking claw 1t1 of the site base 2 and enters inside, and is received by the locking claw 10 so as not to come off. Therefore, the thickness and other dimensions of the elastic material 11 are adjusted in advance,
The installation is done in such a way that it is always engaged with the 1-side 5c of the plate 5 or the locking claw 1fl.The installation is done in the state where the plate 5 is always engaged with the 1-side 5c or the locking claw 1fl.The installation is done in the play 1-5.When the site base 2 is removed, the separation force against the seat surface is calculated by For installation, the plate 5 can be fixed by supporting the plate surface direction of the plate using the positioning holes 8, 8, which are the receiving parts, and the locking claw 10, and pressing it in the direction perpendicular to the plate surface using the I7i material. Ru.

The above is a case in which the motor 3 is attached to the site base 2, and small parts such as other power supply parts are similarly attached to the floor base 1 etc. via the plate 5.

<Problems to be Solved by the Invention> However, the above-mentioned mounting method has problems with the durability of the base, and the mounting work tends to be complicated.

That is, the bases such as the floor and sides are made of plastic and are susceptible to plastic deformation. Particularly, parts such as the locking pawl lO that apply displacement stress,
There is a problem that it deteriorates over time due to repeated displacement and is easily damaged due to careless handling. The above problem is important in the case of small parts or parts that perform mechanical operations, such as the motor 3, because they tend to be attached and detached more frequently due to maintenance, failure, etc. than other parts.

Also, when installing these small parts, screw +L
It is not always necessary to install it by supporting and fixing it using the repulsion force against the seat surface.
Installation was a labor-intensive process.

The present invention is provided to solve the conventional problems as described above.

One aspect of the present invention is a method for collecting small parts that does not include parts that cause displacement, such as the above-mentioned IF claws, on a base that is not economical to repair or replace when damaged. It's about getting the.

Another object of the present invention is to provide a method for attaching small parts that reduces the number of parts by combining the functions of play 1 and more, and also allows for easy installation of small parts on the board. It's about getting the.

Means for Solving the Problems> In order to achieve the above-mentioned object [1], the present invention provides a method for attaching small parts to the base of equipment by elastic engagement via a plate. The method for installing small parts to be supported and fixed is that the installation is done on the plate, in the direction of the plate surface,
This is a method in which a portion is provided that is displaceable in a direction perpendicular to the plate surface, and is elastically engaged with the receiving portion of the base.

<Operation> When the plate is attached to the base, one elastically displaceable portion of the plate comes into contact with the seat surface of the base and applies a repelling force to the plate against the seat surface.

The other elastically displaceable portion supports the plate in the direction of its surface.

It is the mounting plate that actively elastically displaces to support and fix the small parts, and the plate receiving part that is mounted on the base only receives the above displacement force (#reaction force). Therefore, there is no need to mold it into a shape that takes active displacement into consideration. Furthermore, since the plate is installed in the form of a width piece, it can be installed at a lower cost than the base plate, making it economical to replace it if it is damaged. Furthermore, since the number of parts can be reduced compared to the conventional one, the installation work becomes easier.

<Example> The implementation of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of the main parts of a printer for explaining an example of implementing the method of the present invention, and FIGS. FIG.

In the figure, 20a is a floor base located at the bottom of the printer, 20b is a site base formed integrally upright from the floor base 120a, and both are integrally molded from plastic to serve as a chassis and a frame to which small parts to be described later are attached. etc. constitutes the base 20. Of the base 20, a suitable surface of the site base i 20b is used as a seat surface 21 (hereinafter referred to as "the seat surface") for mounting small parts. For mounting, the seat surface 21 is formed into a double circular shape with a ring-shaped peripheral seat 21a formed to slightly protrude from the surface of the site base fi 20b and a central seat 21b provided at the center thereof. 22
．． 22 is the floor base 20a that is installed below the seat surface 21.
There is a positioning hole integrally formed on the top surface, and the plate has a thin groove shape into which a protruding piece of the plate is inserted for installation, which will be described later.

Further, for attachment, a pin-shaped guide post 23 protrudes from the side base fi 20b surface above the seat surface 21. A locking base 24 is formed above the kite post 23 and integrally protrudes from the side base 20b in the axial direction and in the direction of the axis. The locking base 24 has an opening-shaped locking portion 25 formed at an appropriate position on its board surface, and a guide piece 26 is formed on the tip side to be used when attaching a plate, which will be described later.

Reference numeral 27 denotes a motor as a small component, and a pinion 27a of the motor shaft is engaged with a platen gear 28 fitted to a rotating shaft of a platen (not shown), and the platen is rotated by an appropriate pitch in response to a predetermined signal. A plate 29 is fixed to the rear surface of the motor 27 as a bracket for attaching the site base 20b to the seat surface 21.

For installation, the plate 29, as shown in detail in Figure 2, is formed entirely of a flat metal plate, with projecting pieces 10 and 30 protruding from both sides of the JRT at the bottom, and a locking piece on the top. 31
It is formed by bending. The locking piece 31 is attached by bending it at an obtuse angle to the plate surface of the plate 29 so that it can be elastically displaced in the direction of the plate surface. 632 has a guide hole C, through which the guide post 23 of the site base 20b is inserted. The hole is sized to accommodate the size of the hole.

The above installation is done using the projecting pieces 30, 30 of the plate 29 and the guide hole 3.
2 and the dimension 1 positional relationship of the locking piece 31 is the site base 20
b side positioning holes 22, 22. Guide boss 23. This corresponds to the position of the locking portion 25.

33 is an elastic piece that is installed by cutting and raising a part of the plate surface of the plate 1-2g and bending it so that it is elastically displaced in a direction perpendicular to the plate surface. There are three locations around the area. This Taya spring piece 33 is sometimes attached to the site base 20b, but sometimes it is attached to the center seat 21b of the seat surface 21.
It is arranged so that it comes into contact with the

Side base z of the motor 27 in such a configuration
Attach to ob using the following procedure.

First, the plate 29 is attached to the rear surface of the motor 27 using appropriate means such as screws.

Then, for installation, the protruding piece 30 of the plate 29 is attached to the site η2.
Insert into the positioning hole 22 on the z++b side.

Next, the locking piece 31 side is pushed along the guide piece 26 of the locking base 24, and the guide post 23 is inserted into the guide hole 32. When this is pushed in, the locking piece 31 is bent at an obtuse angle with respect to the surface of the plate 29, so the tip 31a of the locking piece comes into contact with the inner surface of the locking base 24 and is slightly displaced. Sliding contact. As the locking piece is pushed in, the locking piece tip 31a moves toward the inner edge 25 of the opened locking part 25.
When it reaches point a, it will rise up due to its elasticity. If the degree of bending of the locking piece 31 is set so that the locking piece tip 31a protrudes above the opening surface of the locking portion 25, the locking piece tip 31a will not be engaged when the raised portion is engaged. It protrudes from the stop part 25. Also, if it is set at the same level as the opening surface above,
The locking piece tip 31a comes into contact with the inner edge 25a of the locking portion. This is attached to the elastic piece 33 of the plate 29.
It may be set in relation to the amount of elastic displacement.

That is, due to the above-mentioned pushing, the resilient piece 33 of the plate 29 comes into contact with the center seat 21b of the site base 20b, and
gradually displaced. This displacement acts on the projecting piece 30 and the locking piece 31 as a repulsion force against the seat surface 21 when the plate 29 is attached. Therefore, when the locking piece 3I reaches the inner edge 25a of the locking part 25, - the above-mentioned separation force causes the locking part 2
11- in relation to 5. So, it's the month of the month 3'
If the elastic displacement amount of l is set to be large and the degree of bending of the locking piece is small, 1 - engagement 1h is engagement + FJ
The contact engagement between the inclined plate surface of [i-3] and the inner edge 25a of the locking portion 25 becomes [I-]. Also, if the bending degree is set to the same level as the opening p+ + fij of the 1F section 25,
As mentioned above, it will be the contact person +L. If a groove ([A not shown) corresponding to the plate thickness of the locking piece 31 is formed in the inner end edge 25a at the time of this push*+grip+L, the locking piece tip 31a
is engaged with the groove, and a reliable locking can be achieved. In this way, the inner edge 25 of the engagement 1E portion 25
The positioning hole 22.22 functions as a stopper part.
In cooperation with this, the plate 29 is supported and fixed.

If this method is used, the motor 27 can be mounted on the base 21 via the plate 29.
), if the installation number is specified, there is no need to install separate parts.
This means that the work can be done simply by performing mounting operations such as pushing. Further, during the installation described in 1-1, the only parts that are displaced are the engaging piece 1F piece 31 of the plate 29 and the resilient piece 33. Since there is no displaced part on the base 20 side, the above-mentioned installation will not cause any damage due to the work.

Figures 3 and 4 (A) and (B) show the case where the method of the present invention is applied to a floor base, and are a perspective view of the main part, a partially enlarged perspective view of 9, and an installation state. FIG.

In the figure, 40 indicates a power supply unit as a small part, and 41 indicates a plate on which the power supply unit 40 is attached. In this installation, the plate 41 is formed of a metal plate having a rectangular shape when viewed from the f side, and its two sides in seven rows are bent at approximately right angles in the same direction, and one side end of the bent piece is protruded. piece 42, 42
(One side of the country is represented).

Furthermore, a locking piece 43 is formed on one side of the non-bent side and located on the opposite side of the projecting piece 42, which is folded back into a substantially U-shape in side section. As shown in FIG. 4(a), the U-shaped bottom of the locking piece 43 has a spring action formed by cutting and raising a part of the plate surface and bending it to the outside of the U-shape. A spring piece 44 is provided to play the ball.

16.46 is a support formed protruding from the floor base 45 of the equipment, and positioning holes 46a, 45a into which the protrusions 42, 42 are inserted are formed on the side surfaces thereof.

47 extends from the support 46 at an appropriate distance to form the floor base 4.
There is a +L portion formed protruding from the support body 4.
As shown in FIG. 4(B), the side facing 6 is slightly recessed to form a locking inner edge 48. This locking part 4
The surface of the floor base 45 between 7 and the support body 46 serves as a seating surface for attaching small parts. Therefore, the distance between the part 1 and the support 46, 46 is
The distance between the projecting pieces 42, 42 and the locking piece 43 and the distance between them are -.

In the method, several phrases for such floor foundation 45 are as follows.
When contacting power supply unit 4 (), press plate 41 with hiss A.
9. [After the step 1F is installed, the protrusions 42, 42 of the plate 41 are inserted into the positioning holes 46a, lja of the support body 46 of the floor base 45. Next, place the locking piece 43 side on the floor, l! When it is inserted so as to be pushed into the latch +lx portion 47 side of the board 45, the tip 43a of the latch 1L piece engages with the inner edge 48 of the latch +F portion 47. During this engagement, the locking piece 4
3 is bent to the extent that the locking piece tip 43a comes into pressure contact with the wall surface of the locking part as shown in FIG. I will support you by eliminating the gap in between.

In the above engagement, the installation is performed on the floor base 4 of the plate 41.
Since a resilient piece 44 is provided on the surface in contact with 5, the reaction force of the resilient piece 44 allows the locking piece 43 to lock into the locking part 47, and the projecting piece 42 to securely lock into the positioning holes 46a, 46a of the support body 46.46. This results in stable engagement. in this way.

The locking inner edge 48 of the locking iF portion 47 functions as a stopper member, and supports and fixes the plate 41 in cooperation with the positioning holes 46a, 46a.

According to such a means, in addition to the mounting operation such as pushing the plate 41, in addition to the mounting operation such as pushing the plate 41, as in the above-mentioned embodiment,
This means that the work can be done without preparing any jigs or the like.

In this installation to the floor base 45, the displaceable portion of the member is attached to the locking piece 43 of the plate 41 and the resilient piece 4.
That's 4 pieces. Therefore, as in the previous embodiments, there is no damage to the floor base 45. In each of the above embodiments, the plate is mounted on a base base (floor base, site base) or made of plastic. This is not limited to the case in which this is the case. The plate used in carrying out the present invention is fixed to the base by hooking it to the base by elastic displacement, so it is possible that the base or metal may be used as long as it has a shape that allows this support and fixation. Of course.

<Effects of the Invention> As described in detail below, according to the present invention, the mounting used when attaching small parts to the base of equipment is performed by attaching the small parts to the plate in the direction of the plate surface and in the direction orthogonal to the plate surface. To eliminate the anxiety of the above-mentioned damage of the base, which is not economical to repair or replace when it is damaged, by forming a part that can be elastically displaced and attaching it to the base by the effect of the above-mentioned elastic displacement. I can do it.

In addition, since the mounting can be supported and fixed to the base by the above-mentioned elastic displacement of the plate, there is no need to separately prepare auxiliary members for fixation as in the past, and the number of parts has been simplified.
This allows for easy installation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of a printer illustrating an example of implementing the method of the present invention. FIGS. 2 (A) and (B) are perspective views of a mounting plate used in the embodiment of FIG. and side view. Fig. 3 is a perspective view of a main part explaining another embodiment of the method of the present invention, and Figs. The drawings and installation are partial cross-sectional views showing the state of the installation, and FIG. 5 is a perspective view of the main parts of a printer illustrating an example of a conventional method. 2()...Base, 20a, 45...
floor foundation. 20b...Site base, 21...Seat surface for attaching small parts. 22.46a...Positioning hole, 25.47...
Locking part. 27... Sweater, 29.41... Mounting plate. :10,42... protrusion, 31.43...
Locking piece. :+3.44... Bullet fragment. 4()...Power supply unit

Claims (1)

[Claims] In a method for attaching a small part to a base of a device, the small part is supported and fixed by elastic engagement via a mounting plate fixed to the small part.
A method for attaching small parts to equipment, characterized in that a portion is provided that is elastically displaced in the direction of the plate surface and in a direction perpendicular to the plate surface, and is elastically engaged with a receiving portion of the base. (2) The method for attaching small parts to a device according to claim 1, wherein the device is a printer and the small part is a motor. (3) The method for attaching small parts to a device according to claim 1, wherein the device is a printer and the small part is a power supply unit.