JPH03278500A - Instrument mounting device to support rail - Google Patents

Abstract

PURPOSE:To construct the title device as a rigid structure easy to integrally form with an instrument body casing and securely prevent a biassing spring from carelessly coming off from a spring receiver seat by forming the spring receiver seat as a striped wall structure communicating with a guide groove part and further forming a relief groove. CONSTITUTION:A spring receiver seat 9 is integrally molded on a partition casing 6a of an instrument body casing 6 as a striped wall structure 9a protruding to the center of the casing 6 communicating with a guide groove part 7. The receiver seat 9 is formed communicating with a rear portion of a notched groove 7a formed in the groove part 7. On the other hand, in a slider 4 a relief groove 4e for avoiding interference with the striped wall structure 9a of the receiver seat 9 is formed on a surface opposite to the receiver seat 9 in the direction of the stroke of the slider 4. The notched length of the groove 4a in the groove part 7 is selected to be larger than that of a guide protrusion 4a in the slider 4 and the length between the front end of the groove 7a and the rear end of the groove part 7 to be smaller than that of the guide protrusion 4a. Hereby, the device is constructed as a rigid structure easy to be integrally formed with an instrument body and hence a biassing spring is prevented from carelessly coming off from the receiver seat 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to the structure of a device for fixing electrical devices such as electromagnetic contactors and relays to U-channel support rails.

(Prior Art) The above-mentioned instrument is installed using a device, as shown in FIG. 4, a U-channel shaped support rail 5 is sandwiched between the fixing claw 2 and the slider 4, and the instrument body 1 is fixed to the support rail 5.

Here, the slider 4 is guided and supported by a guide groove 7 integrally molded with the case 6 of the instrument main body 1 so as to be slidable in the front-rear direction, and a compression coil inserted between the guide groove 7 and the slider 4 The support rail 5 is urged in the direction of arrow P by the spring force of the urging spring 3, and the support rail 5
and the slider 4 to fix the instrument body 1 to the support rail 5. On the other hand, by pulling the slider 4 in the direction of the arrow Q against the biasing spring 3, the slider 4 and the support rail 5 are disengaged and the instrument body can be removed from the support rail 5.

Next, in FIG. 9 and FIG. 10, which show the conventional structure of the device surrounding the slider of the device, the case 6 of the device body is a split case 6a.

It is a molded product of thermosetting resin with a two-part structure combining the slider 40 and the guide groove 7 on the bottom side.
is integrally molded with the case 6 together with the fixing claw 2 shown in FIG.

On the other hand, the slider 4 has a pair of guide protrusions 4a and 4b that are divided into front and rear parts and protrude laterally from the left and right sides, a loading window 4c for the biasing spring 3 that is open in the center, and a window 4c that is provided at the rear end. A handle portion 4d is formed, and the guide protrusion 4a,
4b is guided and supported from both sides by a guide groove 7 provided on the case side and having an angled cross section. Note that a notch groove 7a is formed in the longitudinally intermediate portion of the guide groove portion 7, into which the guide protrusion 4a is inserted when the slider 4 is assembled. The case 6 is also provided with a spring seat 8 for the biasing spring 3 in the form of a protrusion that protrudes into the window 4C on the slider side. The spring seat 8 is a small square piece made of thermoplastic resin molded separately from the case 6, and is assembled by inserting it into a slot for embedding formed in the case 6.

In order to incorporate the slider 4 into the case 6 with this structure,
First, the guide protrusion 4B is inserted into the notch 78 of the guide groove 7, and the slider 4 is slid forward to lock the guide protrusions 4a and 4b in the guide groove 7, and then the slider 4 is loaded with a spring. The biasing spring 3 is stretched and loaded between the window 4c and the spring seat 8.

Incidentally, the structure of the apparatus for mounting the instrument having the above structure is disclosed as a prior art in, for example, Japanese Utility Model Application Publication No. 1-10954.

[Problem to be solved by the invention]

By the way, the conventional structure described above has the following drawbacks in terms of assembly into the device and mechanical strength, especially regarding the spring seat provided on the case side of the device body.

In other words, in a structure in which the spring catch 8 is made as a separate part from the case 6 and assembled into the case 6, the number of parts and assembly man-hours increases accordingly, which increases manufacturing costs.In addition, the spring catch 8 may accidentally fall off from the case during handling. There is also a risk that it may cause damage, resulting in a lack of reliability.

On the other hand, it is conceivable to integrally mold the spring catch 8 with the guide groove 7 when molding the case 6, but as shown in the figure, the spring catch is a protruding small square piece that is separated from the guide groove 7 and stands up independently. In order to mold 8, it is necessary to combine side cores with different cutting directions in the mold in order to release the molded product, which complicates the structure of the mold. Further, in the structure in which a protrusion that engages with the biasing spring 3 is provided on the end face of the spring seat 8 as shown in the figure, the molding die becomes even more complicated. Moreover, molded products made of thermosetting resin, which are brittle in terms of strength and easily chipped, may be easily damaged when the spring seat, which stands up from the case as a small corner piece, hits an object when the case is handled.

The present invention has been made in consideration of the above points, and has a robust structure that allows the spring catch to be easily integrally molded with the device main body case, and also ensures that the biasing spring does not come off accidentally from the spring catch. The purpose of the present invention is to provide a device that prevents the installation of appliances.

[Means to solve the problem]

In order to solve the above-mentioned problems, in the mounting device of the present invention, the spring seat provided on the case side of the instrument body is integrally molded with the case of the instrument body as a striped wall connected to the guide groove, and the slider is A relief groove is formed to avoid interference with the wall of the spring seat.

In addition, in the above configuration, as a measure to prevent the biasing spring inserted between the spring seat on the instrument main body side and the slider from falling off,
An assembly in which a protruding spring seat provided on the instrument body side has a stepped part for holding the biasing spring that protrudes like an eave from its tip, or a part of the slider is attached to the instrument body. In this state, a spring holding cover part can be formed to cover from the outside the end of the biasing spring supported by the spring seat on the device main body side.

[Effect]

With the above configuration, the molding die for the instrument body case, including the guide groove and spring receiver, does not require any side cores, and is a simple two-way punching die consisting of a combination of an upper die and a lower die. It can be handled by

In addition, since the spring catch is molded as a strip wall connected to the guide groove member, it is more robust than a protruding spring catch made of a single small square piece, and the case is made of thermosetting resin. Even if it is a product, there is no risk of it being easily damaged and falling off when something hits it.Moreover, on the slider side, an escape groove is formed on the surface facing the spring seat to avoid interference with the strip wall. , there is no possibility that the slide movement of the slider will be hindered.

In addition, the eave-like stepped part formed at the tip of the spring catch is designed to hold the biasing spring stretched between the slider in the loaded position and prevent it from accidentally falling off the spring catch. work for,
Moreover, this eave-like stepped portion can be formed using a molding die having a simpler structure than when molding a spring engaging protrusion formed at the center of the spring receiving seat surface. A similar function of preventing the biasing spring from falling off can also be achieved by a spring holding cover formed on a portion of the slider so as to cover from the outside the end of the biasing spring supported by the spring seat.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

In the drawings of the embodiment, the same members corresponding to FIG. 9 and FIG. 1θ are given the same reference numerals.

Embodiment 1: FIGS. 1 to 3 show an embodiment corresponding to claim 1 of the present invention. That is, in one split case 6a of the instrument main body case 6, which has a two-part structure, a spring receiving seat indicated by reference numeral 9 is integrally formed as a striped wall body 9a that extends to the center of the case 6 and continues in the guide groove portion 7. It is molded. Here, the spring seat 9 is formed continuously at a rear position of the notch groove 7a formed in the guide groove portion 7.

On the other hand, the slider 4 has a concave clearance groove 4e on the surface facing the spring seat 9 to avoid interference with the striped wall body 9a of the spring seat.
is formed along the stroke direction of the slider 40. The notch length A of the notch groove 7a in the guide groove part 7 is larger (Aha) than the length dimension a of the guide protrusion 4a at the front part of the slider 4, and the end of the notch groove 71 and the guide groove part 7 The length B between the slider 4 and the rear end is selected to be smaller (Bib) than the length b of the rear guide projection 4b of the slider 4.

In order to incorporate the slider 4 into the case side with this configuration,
First, insert the guide protrusion 4a of the slider 4 into the notch 7 of the guide groove portion 7.
After inserting it into section a, slide it further forward.

As a result, the guide protrusions 4a and 4b of the slider are held and supported by the front and rear portions of the guide groove portion 7, respectively, in a manner that they are wrapped around and held in the front and rear portions. Next, at this position, the biasing spring 3, which is a compression coil spring, is inserted between the tip end surface of the window 4C opened in the slider 4 and the spring seat 9. Note that when the slider 4 is fitted into the guide groove portion 7, the strip wall body 9a of the spring seat 9 enters into the clearance groove 48 of the slider 4 as shown in FIG. body 9a
not be hindered by.

Embodiment 2: FIGS. 3 and 4 show an embodiment corresponding to claim 2 of the present invention. That is, a protruding spring seat 9 integrally formed with the case 6 of the instrument main body has a stepped portion 9b that protrudes like an eave toward the biasing spring 3 at its tip.

This stepped portion 9b serves to hold the biasing spring 3 in the loaded position and prevent it from accidentally coming off the spring seat 9. Moreover, this stepped portion 9b can be formed using a simpler molding die than the structure in which a retaining protrusion is formed in the center of the seat surface of the spring catch 9 (see Fig. 1 or Fig. 6). can.

Embodiment 3: FIGS. 6 and 7 show an embodiment corresponding to claim 3 of the present invention. In other words, part of the slider 4 is marked with the code 4.
It is provided with a cover portion for holding a biasing spring indicated by f. In the assembled state where the slider 4 is attached to the case 6, this cover part 4f detours around the outside of the protruding spring catch 9 on the case side and removes the end of the biasing spring 3 supported by the spring catch 9. The slider 4 is integrally formed with the slider 4 so as to extend into the window 4c so as to cover the window 4c.

With this configuration, similarly to the spring retaining stepped portion of the spring seat described in Example 2, the biasing spring 3 supported by the spring seat 9 is reliably held in the loading position, and the spring seat surface This prevents it from accidentally coming off.

Moreover, this cover portion 4f can be easily accommodated by partially changing the molding die for the slider 4.

[Effects of the Invention] Since the apparatus for attaching instruments according to the present invention is constructed as described above, it exhibits significant effects.

(1) By configuring the spring seat provided in the case of the instrument body with a striped wall connected to the guide groove of the slider, which is also provided on the case side, the case of the instrument body is divided, including the guide groove and the spring seat. can be integrally molded using a simple two-way punching mold consisting of a combination of an upper mold and a lower mold. In addition, this spring catch is mechanically more robust than the conventional structure, which is a small angular protrusion separated from the guide groove, and the case of the device body is molded from thermosetting resin. Even if an object unexpectedly bumps into the spring catch when handling the case, there is no risk of it being easily damaged and the chips falling off.Moreover, the slider side is connected to the strip wall of the spring catch provided on the case side. Since the escape groove is formed to avoid interference with the slider, there is no risk that the movement of the slider will be inhibited by the spring seat.

(2) A structure in which a stepped part for holding the spring that protrudes like an eave is formed at the tip of the spring catch provided on the side of the main body case of the instrument, or a cover part for holding the biasing spring is formed in a part of the slider. Accordingly, the biasing spring inserted between the spring seat and the slider can be reliably held in the loading position and can be prevented from accidentally coming off from the spring seat. Moreover, the molding die for molding these stepped portions and cover portions does not need to be particularly complicated, and can be easily handled using a simple molding die.

[Brief explanation of drawings]

Figures 1 to 3, Figures 4, 5, and 6. 7 shows the main structure of different embodiments of the present invention, FIG. 1 is an exploded perspective view of the instrument main body case and the slider, FIG. 2 is a bottom view of the device showing the assembled state of the slider, Figure 3 is a sectional view taken along the arrow ■-■ in Figure 2.
The figure is an assembled sectional view with the biasing spring loaded, Figure 5 is a perspective bottom view of the case side in Figure 4, Figure 6 is an assembled sectional view with the biasing spring loaded, and Figure 7 is the slider in Figure 6. Figure 8 is a perspective view of the equipment installation, Figure 9 is a schematic diagram of the entire device,
Fig. 10 is a back view showing the conventional main structure, and Fig. 0 is an exploded perspective view, respectively.
Fixed claw, 3: Biasing spring, 4 varnish slider, 4a, 4b: Guide protrusion, 4c: Biasing spring loading ready, 4e: Relief groove, 4f
: Spring holding cover part, 5: Support rail, 6: Instrument body case, 7: Guide groove part, 9: Spring seat, 9a: Striped wall body,
9b: 1 person to spring holding step JfR Shiyamaguchi Otori m-・2: ゛, Mimi 5 4Q 7th rI! J 119 figure

Claims (1)

[Claims] 1) Fixing claws and a spring-loaded slider are provided on the bottom surface of the case of the instrument body, and a U-channel support rail is sandwiched between the fixing claws and the slider, so that the instrument body can be fixed. is an instrument mounting device that fixes the
The slider is provided with a pair of front and rear guide protrusions that protrude on both the left and right sides, and a window opened in the center for loading the biasing spring, and the case of the instrument body has a cross section L that accommodates the protrusions on the slider side.
In a device in which a protruding spring receiver is provided that protrudes into a window for loading a spring, and a biasing spring is inserted between the spring receiver and the slider, the spring receiver is inserted into the guide groove. The device is mounted on a support rail, characterized in that the slider is formed integrally with the case of the device main body as a striped wall connected to the wall, and the slider is formed with an escape groove to avoid interference with the wall of the spring seat. Device. 2) The instrument mounting device according to claim 1, characterized in that the protruding spring seat provided on the instrument body side is provided with a stepped portion for holding the biasing spring that protrudes like an eave from its tip. A device for attaching equipment to a support rail. 3) In the instrument mounting device according to claim 1, when the slider is attached to the instrument body in an assembled state, the end of the biasing spring supported by the spring seat on the instrument body side is attached outwardly to a part of the slider. A device for attaching an instrument to a support rail, characterized in that a cover portion for holding a spring is formed to cover the support rail.