JPH0336025Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] The present invention relates to a recessed circuit protector.

Conventionally, circuit protectors have simplified assembly, such as by inserting and fitting the mechanism into a case that is divided into left and right or top and bottom cases. Usually, two cases are fitted together, or two cases are combined and then fixed together with screws or rivets.

At this time, if the mechanical part is inserted into one case and assembled by fitting, the other case also has a holding part such as a shaft part and an engaging part, so visual inspection of the mechanical part and time adjustment of bimetal etc. are required. is extremely difficult.

Therefore, when inspecting or adjusting one case by preparing a special jig with dimensions that match the holding and engaging parts of the other case, or by installing a window on the side of the case, It is broadly divided into cases where inspection and adjustment are performed in combination.

In the former case, a special jig is required, and the attachment and detachment of the jig increases costs and work steps. In the latter case, it was necessary to cover the window after inspection and adjustment, which was inconvenient as it increased the number of parts and the work process.

Furthermore, a separate mounting tool to the panel is also required.

This invention was developed in view of the following points, and belongs to the latter category. After inspecting and adjusting the mechanical part through the window provided on the side of the case, the panel is inserted into the engagement groove provided in the case. By inserting the mounting band with one touch,
By attempting to fix both cases and cover the window at the same time, the number of parts can be reduced and the work process can be labor-saving, and this type of circuit protector can be provided at a low cost.

[Structure of the idea]

A case is provided with a flange at one end, a window in the center, and engagement grooves on both sides, and a mounting band formed in a substantially U-shape is inserted and fitted into the case. It will become.

An embodiment will be shown below with reference to the drawings.

FIG. 1 is an exploded view, in which 1 is a left case, 2 is a right case, and one end is provided with a collar 17 located on the front side of the panel 25. It has a window 5 for both mechanism inspection and time adjustment, an engagement groove 6 for the mounting band 3, and a fitting part 1.
5. Provide a fixing surface 16.

Note that the right case is also provided with a window, an engagement groove, a fitting part, and a fixing surface.

The mounting band 3, which has an elastic force and is formed in a substantially U-shape, has a surface 7 that contacts the fixed surface 16 of the left case 1 to prevent the case from splitting, and a surface 7 that is inserted into the case window and is fitted into the fitting portion 15. It has a protrusion 9 for the purpose of fixing it to the case, and claws 13 and 14 that press into engagement with the surface 11 covering the window 5 and the back surface of the panel.

In addition, it corresponds to the right case 2 and has a surface 8 for preventing division, a protrusion 10 for the purpose of fitting and fixing with the case, and a surface 12 for covering the window.

Fig. 2 is a side view of the inspection and adjustment parts of the main mechanical parts visually viewed from the window, 18 is a movable contact, 19 is a bimetal, 20 is a link support, 21 is a link, 22
is a link spring. By turning on/off the handle 4 through the window, the movable state of the main mechanism parts can be changed, and by pushing up the suspension part between the link 21 and the link spring 22 upward in the figure with a screwdriver or the like, the automatic shut-off state can be changed. 4, and by energizing the terminals 23 and 24, it is possible to visually inspect the bending state of the bimetal and the movement of the mechanism.

Note that timed adjustment is also possible by inserting a mechanical bending jig through the window 5 and bending the bimetal 19.

After inserting, fitting and assembling the mechanism into one of the cases formed as described above, the mechanism inspection and time adjustment are completed with the other case assembled.

After that, insert the claws 13 and 14 of the mounting band 3 into the engagement groove 6 from the rear end of the case, that is, from the direction of the terminals 23 and 24.
If the protrusions 9 and 10 are inserted along the same direction, the protrusions 9 and 10 will come into contact with the side surfaces of the case, but since the protrusions 9 and 10 have sloped surfaces in the direction of insertion, both sides of the U-shape are wide open. inserted. When fully inserted, the protrusions 9 and 10 will be located in the windows on both sides of the case.

At this time, the mounting band 3 having elastic force is fitted into the fitting part 15 at the same time as the projections 9 and 10 are inserted into the window part due to the restoring force, and the assembly is completed.

Note that FIG. 3 shows a state in which the panel 25 is attached to a sectioned panel 25.

If the terminals 23 and 24 are inserted from the surface direction of the panel 25 where the flange holes have been processed, the claws of the mounting band 3 will temporarily close due to the mounting holes of the panel 25 and the convex parts near the claws of the mounting band 3. The panel 25 is compressed toward the side surface of the case, but when the panel 25 passes through the convex portion, a force is applied in the direction of separating from the side surface of the case due to the restoring force, and the claws 13, 14 are pressed into engagement with the back surface of the panel 25. . Therefore, attachment to the panel 25 is completed by inserting it until the collar 17 located on the front side of the panel 25 comes into pressure contact with the surface of the panel 25.

[Effect of idea]

With the above configuration, according to the present invention, the circuit protector is fixed to the panel by elastically holding the panel using the flange provided at one end of the case and the engaging pressure contact claws provided at both ends of the mounting band. I can,
Also, due to the engagement groove, fitting part, fixing surface of the case, the protrusion of the mounting band, and the surface that prevents the case from splitting,
In addition to being able to fix the two divided cases, a window is provided on the side of the mechanism inspection and adjustment part in the case, and the window is covered with the mounting band when the case is fixed by attaching the mounting band after the inspection and adjustment work is completed. Because of this, there is no need to separately prepare and attach a window covering, the number of parts and work efficiency can be reduced, and an embedded type circuit protector can be provided at a low cost.

[Brief explanation of the drawing]

FIG. 1 is an exploded actual view, FIG. 2 is a side view of the mechanism section, and FIG. 3 is a top side view showing how it is attached to the panel. 1, 2...Case, 3...Mounting band, 4...
Handle, 25...panel.

Claims (1)

[Scope of utility model registration request] A panel having a mounting hole is elastically held between a flange provided at one end of the case and an engaging pressure contact claw provided at both ends of a U-shaped mounting band, and is embedded into the case. is divided, and the case to be divided is fixed and held integrally by the mounting band,
A circuit protector having an opening/closing mechanism inside the case, characterized in that a window is provided on the side of the case in the vicinity of the area where inspection and adjustment of the opening/closing mechanism is required and at a position covered by the mounting band.
circuit protector.