JPH0547376Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a case mounting device, in particular, a case in which a front case and a rear case are used to store internal equipment, and the case is fixed in a mounting hole. This invention relates to a case mounting device.

[Conventional technology]

Generally, in this type of mounting device, as disclosed in Japanese Utility Model Application Publication No. 63-7655, for example, the case housing the internal equipment is divided into a front case and a rear case, and one of these cases is divided into two parts. A locking pawl is provided on one side, an elastic piece having a locking hole is provided on the other of the cases, the elastic piece is elastically deformed along the locking pawl, and then the elastic piece is deformed elastically. The locking pawl is returned to engage with the locking hole, and the front case and the rear case are integrally assembled and fixed.

[The problem that the idea aims to solve]

In the conventional example, when the locking hole is elastically engaged with the locking pawl, the elastic piece is deformed and engaged so as to ride on the locking pawl, so the elastic piece is easily damaged. In this case, there is a problem that the mounting force between the front case and the rear case is significantly reduced, and when a case that has been assembled and fixed as an integral part is mounted and fixed in a mounting hole, for example, screws etc. It is necessary to use dedicated separate parts for fixing, and there is a problem that workability is poor due to the increase in the number of parts.

SUMMARY OF THE INVENTION An object of the present invention is to provide a case mounting device that can reduce the number of parts, facilitate the case assembly work, and strengthen the mounting between the front case and the rear case.

[Means to solve the problem]

A case formed of a front case and a rear case that house internal devices, a locking portion formed on the opposing wall surface of the front case or the rear case, and a locking portion that engages with the locking portion to connect the front case and the rear case. In a case mounting device comprising a stopper member for fixing the case to the case and a mounting hole formed at a mounting location of the case, the stopper member has a fulcrum portion supported by the case and a mounting hole for fixing the case to the mounting hole. A force point part that is elastically deformed when pressed against the inner circumferential surface of the mounting hole, and the locking part for pressing one case in which the locking part is formed to the other case when the force point part is elastically deformed. It is characterized by being composed of three parts, including an action point part that engages with the part.

[Effect]

When the action point of the stopper member is locked to the locking part formed on either the front case or the rear case, the front case and the rear case are assembled and fixed, and the fixed case is inserted into the mounting hole. As a result, the force point portion of the stopper member is elastically deformed along the inner circumferential surface of the mounting hole, and the force point portion is elastically pressed against the inner circumferential surface of the mounting hole and can be fixed to the case mounting hole. As the force point portion deforms, one case provided with a locking portion that engages with the force point portion is pressed toward the other case, thereby making it possible to firmly attach the front case and the rear case.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

1 to 3 show a first embodiment of the present invention, in which 1 indicates a front case 2 and a rear case 3.
This case 1 is made of synthetic resin and is divided into parts. Inside this case 1, an internal device 4 such as a circuit for driving a clock installed in a vehicle such as an automobile is housed and fixed. Case 2
A locking portion 5 is formed on both sides of the opposing wall surface 2A, and groove portions 6 with different depths are provided with the locking portion 5 as a boundary, with the one closer to the rear case 3 having a shallower structure. There is. Moreover, a groove 6 with no shallowness or depth is also formed in an extension of the groove 6 on the wall surface 3A of the rear case 3 adjacent to the wall surface 2A on which the groove 6 is formed. Reference numeral 7 denotes a stopper member made of a metal material that is not easily deformed by heat and can be elastically deformed, such as iron or aluminum. This stopper member 7 includes a fulcrum portion 8 that is supported in contact with the bottom wall 3C of the rear case 3, a wall surface 2B where the groove portion 6 is not formed,
3B, but is bent from one side of the fulcrum 8 so that the distance from the wall 3B gradually increases as the distance from the fulcrum 8 increases; 8 and a pair of action point portions 10 located on both sides of the proximal end of the force point portion 9.

The claw portions 10A bent into an L-shape at the tips of the pair of action point portions 10 are engaged from the bottom wall 3C side of the rear case 3 along the shallow part of the groove portion 6 which also serves to position the action point portions 10. When elastically engaged with part 5,
The rear case 3 held by the stopper member 7 can be fixed to the front case 2 by being sandwiched between the stopper member 7 and the front case 2.

The case 1, which is assembled and fixed by the stopper member 7 in this way, is attached to the mounting hole 11 formed in the dash board of the vehicle.
Since the force point portion 9 elastically presses against the inner circumferential surface of the mounting hole 11, the case 1 can be fixed without coming off from the mounting hole 11.

Reference numeral 12 denotes a connector for electrically connecting the internal device 4 in the case 1 to an external device (not shown) provided on the vehicle side. By inserting into the portion 9A and protruding from the wall surface 3B of the case 1, the case 1 can be made thinner.

Next, the operation of the present invention in the above configuration will be explained.

When the case 1 assembled and fixed by the stopper member 7 is inserted into the mounting hole 11 of the dash board, the force point 9 of the stopper member 7 is inserted into the mounting hole 1.
By being held in a state of being bent inward along the inner peripheral surface of 1, an elastic restoring force is generated in the force point part 9,
As mentioned above, the case is attached and fixed to the mounting hole 11 by this force.
In other words, the ridgeline portion l where the fulcrum portion 8 and the force point portion 9 are bent becomes more strongly pressed against the corner portion L where the wall surface 3B and bottom wall 3C of the rear case 3 are in contact as the deflection increases. However, at the same time, the stopper member 7
uses the point of contact between the ridgeline portion l and the corner portion L as a fulcrum to pull the action point portion 10 in the direction of the arrow a shown in FIG. 3 to generate a tensile force. That is, the front case 2 provided with the locking part 5 is pressed against the rear case 3 by this tensile force, and as a result, the front case 2 and the rear case 3 are
The installation can be strengthened.

As described above, in the case mounting device of the present invention, the mounting in the mounting hole 11 is performed using the stopper member 7 that fixes the front case 2 and the rear case 3, without using separate dedicated parts as in the conventional example. This allows the number of parts to be reduced and the installation work to be facilitated, and the stopper member 7 can firmly fix the front case 2 and the rear case 3.

4 and 5 show a second embodiment of the present invention, in which the same parts as those in the first embodiment are designated by the same reference numerals and their details will be omitted.

In this embodiment, a locking part 13 in the shape of a notch hole is formed in the wall surface 2B of the front case 2 at an angle, and a force point is bent at an angle from one end of the fulcrum part 15 of the stopper member 14. An action point portion 17 is cut and raised approximately at the center of the portion 16, and the fulcrum portion 1
5 has a positioning hole 1 drilled in the rear case 3 at the other end.
A locking piece 15A that locks with 8 is formed by bending.
In this embodiment, by locking the locking piece 15A formed at the other end of the fulcrum part 15 in the positioning hole 18 and inserting the action point part 17 into the locking part 13, the front case 2 and the rear After assembling and fixing the case 3, the case 1 is inserted into the mounting hole 11, and the force point portion 16 of the stopper member 14 is inserted into the mounting hole 11.
The force point part 16 is bent inward along the inner peripheral surface of the
By elastically pressing the inner peripheral surface of the mounting hole 11, the case 1 is fixed to the mounting hole 11, and as the force point part 16 deforms, the force point part 16
The point of action 17 formed at the front presses the locking portion 13, and as a result, the front case 2 provided with the locking portion 13 presses the rear case 3, which prevents the front case 2 and rear case 3 from being attached. In order to strengthen the
The same functions and effects as in the embodiment can be obtained.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, in the first embodiment, the step-shaped locking portion is provided with an action point Although the front case and the rear case are assembled and fixed by engaging the claws that are bent in the direction shown in FIG. 7, as shown in FIG. The stop part 19 is connected to the application point part 1.
The front case 2 is engaged with the locking hole 20 drilled in the
and the rear case 3 may be assembled and fixed. Also,
In each of the above embodiments, a locking portion that engages with the action point of the stopper member is formed on the front case, but the locking portion may also be formed on the rear case, and the location where the locking portion is formed can be selected as appropriate. good. Furthermore, although the internal equipment built into the case is shown as that of a vehicle clock, a switch or various household electrical equipment may also be built in, and it goes without saying that the case mounting device of the present invention can be widely used for various electrical equipment. It is.

[Effect of idea]

A case formed of a front case and a rear case that house internal devices, a locking portion formed on the opposing wall surface of the front case or the rear case, and a locking portion that engages with the locking portion to connect the front case and the rear case. In a case mounting device comprising a stopper member for fixing the case to the case and a mounting hole formed at a mounting location of the case, the stopper member has a fulcrum portion supported by the case and a mounting hole for fixing the case to the mounting hole. A force point part that is elastically deformed when pressed against the inner circumferential surface of the mounting hole, and the locking part for pressing one case in which the locking part is formed to the other case when the force point part is elastically deformed. and a force point part that engages with the mounting hole, the force point part being elastically deformed along the inner circumferential surface of the mounting hole to fix the case to the mounting hole, and As the force point part deforms, the one case forming the engagement part is pressed against the other case by the force point part, thereby reducing the number of parts and making it possible to easily attach the parts to the front case. It is possible to provide a case mounting device that can firmly attach the case and the rear case.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention, in which FIG. 1 is an exploded perspective view, FIG. 2 is a sectional view, and FIG.
The figure is an enlarged sectional view taken along the line A-A in FIG. 2, FIGS. 4 and 5 show a second embodiment of the present invention, FIG. 4 is a perspective view, and FIG. FIG. 6 is an exploded perspective view of essential parts showing a modification of the present invention. 1... Case, 2... Front case, 3... Rear case, 4... Internal equipment, 5, 13, 19... Locking part, 7, 14... Stopper member, 8, 15... Fulcrum part, 9, 16... Force point part, 10, 17... Action point part, 11... Mounting hole.

Claims (1)

[Scope of utility model registration request] A case formed of a front case and a rear case that house internal devices, a locking portion formed on the opposing wall surface of the front case or the rear case, and a locking portion that engages with the locking portion to connect the front case and the rear case. In a case mounting device comprising a stopper member for fixing the case to the case and a mounting hole formed at a mounting location of the case, the stopper member has a fulcrum portion supported by the case and a mounting hole for fixing the case to the mounting hole. A force point part that is elastically deformed when pressed against the inner circumferential surface of the mounting hole, and the locking part for pressing one case in which the locking part is formed to the other case when the force point part is elastically deformed. A mounting device for a case, characterized in that it is composed of three parts, and an action point part that engages with the part.