JP3518297B2 - Instrument case mounting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a device for mounting an instrument case, for example, in a case where an instrument case such as a controller (instrument case) is attached to an instrument mounting panel. The present invention relates to an improvement in a mounting device used for a vehicle. 2. Description of the Related Art Conventionally, as a mounting device of this kind, for example, a configuration as shown in FIGS. 6 and 7 has been known. That is, the flange 3 is projected from the outer periphery of the instrument case 1 on the side of the front operation unit (hidden in the figure), and the elastic pressing piece 7 is cantilevered on the opposite side of the mounting frame 5 fitted into the body 1a of the instrument case 1. A configuration is known in which a screw 11 is screwed into the base 9 of the elastic pressing piece 7 in the direction of the flange 3, and an engaging protruding piece 13 protrudes from the opposite side to the rear side. In this instrument case mounting device, the instrument case 1 is fitted into a mounting hole (not shown) of a panel (not shown in FIG. 6) 15 from the rear side, and the flange 3 is attached to the panel 15.
The mounting frame 5 is fitted into the body 1a of the instrument case 1 from the rear side to press the elastic pressing piece 7 against the back surface of the panel 15, and the engaging projection 13 of the mounting frame 5 is attached to the instrument case 1 The instrument case 1 is fixed to the panel 15 in such a manner that the panel 15 is elastically held between the elastic pressing piece 7 and the flange 3 by engaging with the engaging groove 1b formed in the body 1a. Further, when it is necessary to increase the fixing strength of the instrument case 1 to the panel 15, the screw 11 is screwed into the base 9 of the mounting frame 5 to press the panel 15. Reference numeral 17 in the figure denotes an external connection terminal protruding from the rear part of the instrument case 1. [0004] However, the mounting device having the above-described configuration has a configuration in which the elastic pressing piece 7 that is supported by the mounting frame 5 in a cantilever manner is pressed against the back surface of the panel 15. It is difficult to maintain both the mechanical strength and elasticity of the piece 7 satisfactorily, and there is room for improvement from the viewpoint of increasing the fixing strength of the instrument case 1 to the panel 15. SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional drawback. The mounting frame for fixing the instrument case to the panel has good mechanical strength and elasticity, and can be appropriately pressed and fixed. An object of the present invention is to provide a mounting device which is easy to mount and remove. [0006] In order to solve such a problem, a mounting device of the present invention has a flange that is inserted into a mounting hole of a panel from the rear side and is locked to the panel. An instrument case, and a mounting frame which is fitted to the outer periphery of the instrument case from the rear side and is engaged with the instrument case. The mounting frame has both ends integrally supported on the outer periphery.
And a central bulge.
Directly against the panel facing the instrument case flange.
The panel holding piece has a large curved projection . According to the present invention, the panel holding pieces formed on the mounting frame are formed in pairs at diagonal positions, and are formed in pairs.
For pressing down the panel on the outer periphery of the mounting frame
There is provided a holding portion for holding the frame so that it can move forward and backward. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a main part showing an embodiment of an instrument case mounting device according to the present invention. In FIG. 1, a prismatic instrument case 19 is a conventionally known instrument having a front operation portion 21 forming a part thereof or a flange 23 integrally projecting from an outer periphery in the vicinity thereof. When the instrument case 19 is inserted into the mounting hole 25a of the panel 25 (not shown in FIG. 1) from the rear (rear) side body portion 19a, the flange 23 comes into contact with the front side of the panel 25. . On the outer periphery of the instrument case 19 near the flange 23 on the body portion 19a, a continuous engagement groove portion 19b having a saw-tooth shape is formed at a diagonal position (the lower surface side is hidden and cannot be seen in FIG. 1). (See FIG. 4 described later). The front operation unit 21 constitutes an inner unit of an instrument in which a plurality of circuit boards are arranged on the back side and can be taken out of the instrument case 19, but the explanation is omitted because it is not the gist of the present invention. Reference numeral 27 designates the front operation unit 21 as the instrument case 19
It is a locking portion that locks to the. The mounting frame 29 is provided on the body 19 of the instrument case 19.
a is formed from a synthetic resin into a rectangular frame having substantially the same outer peripheral shape as the outer peripheral shape of the flange 23, and has an inner diameter slightly larger than the outer diameter of the body portion 19a and an outer periphery substantially the same or smaller than the flange 23. And can be fitted into the trunk 19a of the instrument case 19 from the rear side. As shown in FIG. 2, the opposite sides 29a and 29b of the mounting frame 29 are formed at diagonal positions so that the panel holding pieces 31 and the holding portions 33 protrude. For example, the panel holding piece 31 on the opposite side 29a side
As shown in FIG. 3, as shown in FIG. It has an arcuate band-like body having a central bulging portion 31c at both ends (both ends curved portions 31c).
a, 31b) are the opposing sides in FIG.
29a is integrally supported. Then, the panel holding piece 31 is provided between the curved portions 31a and 31b at the opposite sides 29.
The gap S (see FIGS. 2 and 4) is formed close to the opposing side 29c orthogonal to the opposing side 29a. As described above, since both ends of the panel holding piece 31 are integrally supported by the opposing sides 29a , when the center bulging portion 31c is pressed against the rear side against the urging force, the panel holding piece 31 shown in FIG.
As shown by the broken line in the middle, while the central bulge 31c and the curved portions 31a, 31b at both ends are deformed, the central bulge 31c can be elastically largely displaced to the rear side. The holding unit 33
It has a screw hole 33a penetrating in the direction of the rear side and the flange 23, and is formed close to an opposing side 29d orthogonal to the opposing side 29a, and has a split groove 33b for elastically holding a screw 35 for holding down a panel. It is formed along the hole 33a. The opposite side 29b is also
Panel holding piece 3 similar to the opposite side 29d orthogonal to
1 is formed, and the similar holding portion 33 is moved toward the opposite side 29c.
Are formed, and have a diagonal positional relationship with the opposite side 29a. Opposite sides 29a, 29b of the mounting frame 29 which are opposed to each other
As shown in FIG. 1, an engagement projection 3 protruding rearward
7 is formed, and the engagement projection 37 is provided with the instrument case 19.
An engagement protrusion 37a is formed to engage with the engagement groove 19b provided in the body 19a. Therefore, when the mounting frame 29 is fitted into the body portion 19 a of the instrument case 19, the engaging protrusion 37 a of the engaging protrusion 37 is engaged with the engaging groove 19 of the instrument case 19.
b, the mounting frame 29 is easily moved forward in the direction of the flange 23, but is prevented from retreating to the rear side. In such an instrument case mounting apparatus, for example, in FIG. 1, a panel 25 is arranged between the instrument case 19 and the mounting frame 29 and inserted into the mounting hole 25a from the rear side.
As shown in FIG. 5, the flange 23 is brought into contact with the front side of the panel 25, and the mounting frame 29 is attached to the body 19 a of the instrument case 19.
When the mounting frame 29 is further moved in the direction of the flange 23 in a state where the engaging projections 37 of the mounting frame 29 are engaged with the engaging groove portions 19b of the body portion 19a as shown in FIG. The central bulging portion 31c of the holding piece 31 is the panel 2
5 and is elastically displaced to the rear side, and a biasing force is applied to the panel 25, so that the flange 23 and the mounting frame 2
The panel 25 is elastically held between the instrument case 19 and the instrument case 19.
Are fixed to the panel 25. Panel 2 for instrument case 19
In order to remove the mounting frame 29 from the mounting frame 29, the tip of the engaging projection 37 of the mounting frame 29 is lifted to release the engagement between the engaging ridge 37a and the engaging groove 19b. Can be removed. In the instrument case mounting apparatus, the instrument case 19 is inserted into the mounting hole 25a of the panel 25 from the rear side, and the flange 23 is brought into contact with the panel 25. In the configuration in which the instrument case 19 is fixed so as to be sandwiched between the attachment frame 29 and the flange 23 by the panel 25, the both ends curved portions 31a and 31b and the flange 2
3. A panel restraining piece 31 having a central bulge 31c which is greatly curved and bulged so as to directly contact the panel toward 3.
Is formed so that both ends thereof are integrally supported by the mounting frame 29, and the engaging projections 37 formed on the mounting frame 29 are engaged with the engaging grooves 19 b of the instrument case 19. Is held by the mounting frame 29 at two locations near the curved portions 31a and 31b at both ends thereof, while the panel 25 is held down by the central bulging portion 31c. The panel holding piece 31 has good mechanical strength and good elasticity, and the instrument case 19 can be securely fixed. If the screw 35 is screwed into the screw hole 33a of the holder 33 and the panel 25 is pressed, the instrument case 19 can be more securely and firmly fixed to the panel 25. If it is not necessary to fix firmly, the screw 35 may not be necessary. Moreover, if at least one pair of the panel holding pieces 31 and the holding portions 33 are formed in pairs at diagonal positions of the mounting frame 29, the instrument case 19 can be fixed more planarly and more stably. Opposite side 29 of mounting frame 29
It is also possible to form the panel holding pieces 31 and the holding portions 33 at diagonal positions on c and 29d. In the above-described embodiment, the engagement groove 19b is formed in the body 19a of the instrument case 19, and the engagement protrusion 37 is provided on the mounting frame 29 to be fitted in the engagement groove 19b. Is formed to engage the fixing frame 29 with the instrument case 19, but the present invention is not limited to this, and various engaging and fixing configurations are possible. In short, it is preferable that the instrument frame 19 and the mounting frame 29 be engaged so as to prevent the mounting frame 29 from moving backward while the mounting frame 29 is easily moved forward. As described above, according to the mounting device of the present invention, the instrument case is provided with a flange for locking to the panel, and a mounting frame is mounted on the outer periphery of the instrument case from the rear side. At the same time, the both ends were integrally supported on the outer periphery of the mounting frame with respect to the arc- shaped band-shaped panel restraining piece which was largely curved and projected so that the central bulging portion was directed toward the instrument case flange and directly contacted the panel. Therefore, when the instrument case is inserted into the panel from the back side, the mounting frame is fitted to the instrument case and the instrument case is engaged, so that the panel can be appropriately elastically sandwiched between the flange and the panel holding piece. Since both ends of this panel holding piece are supported by the mounting frame,
The mechanical strength is good, and the mounting and dismounting operation of the mounting frame is easy. Also, since to form in pairs at positions diagonal panels pressing piece formed in said mounting frame, can advantageously be planarly more stably fix the instrument case.
Further, whether a holding portion for holding a panel holding screw for pressing the panel so as to advance and retreat is provided on the outer periphery of the mounting frame .
In addition , the instrument case can be more securely and firmly fixed in combination with the function of the panel holding piece.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic exploded perspective view showing an embodiment of a mounting device according to the present invention. FIG. 2 is a rear view showing a mounting frame in FIG. 1; FIG. 3 is a diagram illustrating a panel holding piece formed on a mounting frame in FIG. 1 and its operation. FIG. 4 is a cross-sectional view of a main part (a cross section taken along line IIV-IIV in FIG. 2) for explaining the relationship between the instrument case and the mounting frame in FIG. 1; FIG. 5 is a plan view illustrating an example of use of the mounting device of FIG. 1; FIG. 6 is a schematic perspective view illustrating a conventional mounting device. FIG. 7 is a plan view of the mounting device of FIG. 6; [Description of Signs] 1, 19 Instrument case 1a, 19a Body 1b, 19b Engagement groove 3, 23 Flange 5, 29 Mounting frame 7 Elastic pressing piece 9 Base 11, 35 Screw 13, 37 Engagement projection 15, 25 Panel 17 External connection terminal 21 Front operation section 25a Mounting hole 27 Locking section 29a, 29b, 29c, 29d Opposing side 31 Panel suppressing piece 31a, 31b Curved section 31c at both ends Central bulging section 33 Holding section 33a Screw hole 33b Split groove 37 Engaging projection 37a Engaging projection

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Masahiro Kokuda 5-16-6 Kugahara, Ota-ku, Tokyo Inside Rika Kogyo Co., Ltd. (56) References JP-A-8-14949 (JP, A) Sho Akai 48-10462 (JP, U) Real opening 58-130217 (JP, U) Real opening 62-4022 (JP, U) Actual opening 49-1445651 (JP, U) Real opening 63-60919 (JP, U U) Japanese Utility Model Hei 2-6219 (JP, U) Japanese Utility Model Publication No. 34-11825 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) G01D 11/30 G01R 1/04 H05K 5 / 02

Claims (1)

(57) [Claim 1] An instrument case having a flange which is inserted from the back side into a mounting hole of a panel for mounting instruments and has a flange which is locked to the panel, and an outer periphery of the instrument case. A mounting frame fitted from the back side and engaged with the outer periphery, both ends of which are integrally supported, and a central bulging portion facing forward with the flange of the instrument case facing forward.
It consists of an arcuate band that is greatly curved and projected so as to directly contact the panel, and is formed in pairs at diagonal positions.
Panel holding piece and panel holding to press the panel
Frame having a holding portion for holding a screw for reciprocation
Mounting apparatus instrument case, characterized in that the, the equipped.