JPH0624107Y2 - Cam switch - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] In this invention, flat box-shaped contact blocks each containing a disc cam are stacked in one or more stages, and mounting plates are applied to both end faces of the stacked stages. , The contact block is integrated by using through bolts or studs, and the common shaft for twisting and driving the disc cams is projected to one side of the stack, with the shaft protruding side being the panel side of the panel. The present invention relates to a configuration of a cam switch including a contact unit arranged on one surface side of a panel and a handle or a key mounted on the front surface side of a panel so that the shaft can be twisted.

[Conventional technology]

This type of cam switch is shown in Figs. 14, 15 and 16
A configuration shown in the figure is known. In the structure shown in FIG. 14, a plurality of stacked contact blocks 1a are attached to the mounting plate 2
A mounting plate on a side where a common shaft 3 for driving a disc cam incorporated in each contact block twists a contact unit 1 integrated using a and 2b and a through stud 2c. After fixing the contact unit 1 to the back side of the panel 12 by attaching the packing 5 with the nut 6 to the panel panel 12 side through the 2a, the contact unit 1 is fixed to the rear side of the panel 12 and then the nut 6 is inserted. The handle 7 is attached to the tip of the shaft 3.
The configuration of FIG. 15 uses a key 8 instead of the handle 7 in the configuration of FIG. 1, and since the shaft 3 and the key 8 are engaged with each other inside the nut 6, the spacing member 15 is used. The contact unit 1 is fixed to the back side of the panel 12 of the panel. Further, in the configuration of FIG. 16, the fixing of the contact unit 1 to the rear surface side of the panel 12 uses two or four screws, and the rosette 10 having the symbol name plate 9 and the contact unit 1
It is carried out by sandwiching the panel 12 between the panel and.

[Problems to be solved by the device]

All of the above three configurations are handles 7 or keys for twisting the shaft 3 at the tip of the shaft 3 protruding by a certain length from the surface of the mounting plate 2a when the cam switch is assembled to the panel. 8 is attached to the front side of the panel 12 so as to have a predetermined attachment dimension.
As shown in the figure, the number of packings 5 can be adjusted according to the thickness of the panel, and as in the case of the key operation of FIG. 15, a spacing member 15 is interposed in addition to the packing 5, and FIG. As described above, the nameplate 10 is provided. Assembly is performed by using a modified mounting plate 2a so that the handle 7 is located at a predetermined height from the surface of the panel 12 when the rosette 10 having a height different from that of the nut 6 is used. ing. In this way, the configuration of these contact units differs depending on whether the configuration on the front side of the panel is the nut and handle, the nut and key, or the rosette and handle. Since it is assembled as a simplified cam switch, there is no mutual compatibility between the contact units, and there is a problem in swiftness not only in responding to custom specifications but also in changing specifications.

An object of the present invention is to provide a configuration of a cam switch having mutual compatibility with the contact units regardless of the configuration of the front side of the panel.

[Means for Solving the Problems]

According to the present invention, in order to solve the above-mentioned problems, flat box-shaped contact blocks each incorporating a disc cam are stacked in one or more stages, and mounting plates are applied to both end faces of the stack, and through bolts are attached. Alternatively, the contact blocks are integrated by using studs and a common shaft for driving the disc cams to be twisted is projected to one side of the stack, and the protruding side of the shaft is the panel side of the panel and the rear side of the panel is the panel side. And a handle or key mounted on the front side of the panel so that the shaft can be twisted. An engagement surface having a through hole for a screw formed at one end extending outward and an L-shaped bend at the other end toward the panel panel side in the stacking direction of the contact blocks, the engagement surface being formed. A mounting frame having a projection engaged with the engagement hole and a female screw into which a screw is screwed through the screw through hole of the mounting plate at the time of engagement is fixed to the rear surface side of the panel and the mounting is performed. The end of the shaft of the contact unit is inserted when the plate is engaged with the mounting frame and the mounting plate and the mounting frame are integrated by the screw, and the joint for transmitting the twisting force to the inserted shaft end also handles. The contact unit and the handle or key side should be separable on the back side of the panel.

[Action]

In this way, the joint is interposed between the contact unit and the handle or key, and the mounting plate of the contact unit on the protruding side of the shaft is hinged in relation to the hole and the protrusion in the mounting frame fixed to the panel panel rear side. The shaft and the joint are engaged at a position immediately before the mounting plate when they are combined and overlapped with each other, and this engagement is performed by inserting the shaft into the joint while leaving a dimensional margin at the tip of the shaft, Since the influence of the protruding size of the shaft at the time of engagement is eliminated, it is always 1 regardless of the configuration of the handle or key side.
It is possible to connect to the handle or the key side with different types of contact unit configurations, and it is possible to freely replace the contact unit with a different number of contact blocks.

〔Example〕

FIG. 1 shows an embodiment of the present invention. As shown in FIG. 2, the mounting plate 22 on the shaft projecting side of the contact unit 1 has a through hole for passing the screw 13 on the surface extending downward in the same plane.
22d is formed and the upper part is bent into an L shape, and a hole 22a is formed in this bent surface. The mounting plate 22 is further provided with a positioning claw 22c for abutting against the contact block and a screw hole 22b for integrating the contact block with a through bolt or stud. On the other hand, as shown in FIG. 3, the mounting frame 24 to which the mounting plate 22 is engaged has a rectangular frame-shaped side wall 24b along the peripheral edge of the rectangular bottom surface, and from the bottom surface to the right side in FIG. It is formed as a case-shaped frame in which a cylindrical portion 24c protruding inward is formed, and a protrusion 24a is formed on the upper outer peripheral surface of the side wall 24b. The fixing of the mounting frame 24 to the board panel 12 is performed as follows. That is, the shaft 23 of the contact unit 1 is inserted into the inner side thereof, and the outer peripheral surface of the shaft 23 has a hole 32a formed in a shape capable of being twisted and transmitted to the shaft 23. A fitting 32 made of a flexible synthetic resin having a flange (not shown) formed at the right end, in which 32b is formed in the circumferential direction, is inserted from the right side of the handle holding member 26 and the mounting frame 24
Of the mounting frame while bending the engaging claw 32b inward through the tapered surface of the tip portion of the mounting frame.
The inner peripheral edge of the ring. In this way, the mounting plate 22 is engaged with the mounting frame 24 fixed to the panel panel 12 by using the holes 22a and the protrusions 24a whose positional relationship is set as shown in FIGS. 4 and 5. The hole 22a is hooked on the protrusion 24a as shown in FIG. After that, the mounting plate 22 and the female screw 24d of the mounting frame 24 are screwed into each other to integrally couple the contact unit and the handle side. Here, on the outer peripheral surface of the end portion of the shaft 23 to which the twisting force is transmitted via the handle 27, two parallel surfaces are formed to receive the twisting force, and the joint 32 for transmitting the twisting force to the two parallel surfaces. In the hole 32a, two wall surfaces are formed in which the two parallel surfaces of the shaft are inserted almost densely. These two wall surfaces have a joint hole 32a, as shown in FIGS. 6 and 7, in which vertical grooves 32aa are formed on both sides, and the vertical grooves have side plates 14, 15 or 8 The side plate 16 formed as shown is press-fitted to form. In the case of the side plate 14, this press-fitting is performed through the saw-toothed retaining projections on the parallel two sides of the square plate, and in the case of the side plate 15, the projections formed on the parallel two sides and the extrusion protrusions formed on the surface. I am trying to do it. Further, in the case of the side plate 16, one plate is bent into a U-shape so that two side plates are integrated with each other.

FIG. 9 shows an assembling state of the cam switch thus assembled to the panel panel 12. When replacing the contact unit 1 with a contact unit having a different number of poles, loosen the screw 13, lift the contact unit 1 as shown in FIG. 10, remove the mounting plate 22 from the protrusion 24a of the mounting frame, and FIG. To separate. Fig. 12 shows the case of key operation,
The state after the contact unit 1 is separated is shown. FIG. 13 is a view of the contact unit 1 shown in FIG. 11 as seen from the back side.

[Effect of device]

As described above, according to the present invention, flat box-shaped contact blocks each having a built-in disc cam are stacked in one or a plurality of stages, and the mounting plates are applied to both end faces of the stack, and through bolts or The contact block is integrated using studs, and a common shaft that drives the disc cams to twist is projected on one side of the stack, with the shaft protruding side facing the panel side to the rear side of the panel. A cam switch having a contact unit arranged on the front side of the panel and a handle or a key attached to the front side of the panel so that the shaft can be twisted, and the mounting plate on the protruding side of the shaft is located outside in the same plane. Has a through hole for a screw formed at one end and an L-shaped engagement surface provided at the other end toward the panel panel side in the stacking direction of the contact blocks. Then A mounting frame having a projection engaging with the engaging hole of the mounting plate and a female screw into which the screw is screwed through the screw through hole of the mounting plate when the mounting frame is fixed to the back side of the panel and the mounting plate is mounted. The end of the shaft of the contact unit is inserted when the mounting plate and the mounting frame are integrated with each other by engaging with the frame and the screw, and a joint for transmitting a twisting force to the inserted shaft end has a handle or a key. The contact point unit and the handle or key side can be divided on the back side of the panel, and the cam switch can be integrated with one screw using the screw through hole of the mounting plate. Since the contact unit is integrated with the handle or the key side, the contact unit can be integrated through the joint and leaving a margin of insertion depth at the tip of the shaft of the contact unit. Because, allows coupling of the handle or key-side in the configuration of one of the contact units irrespective to the configuration of the handle or the key side, it becomes freely exchanged to different contact unit of the number of contact blocks. Further, since the engaging portion for transmitting the twisting force between the contact unit and the handle or the key side is formed in the position immediately before the shaft protruding side mounting plate of the contact unit, the engaging portion between the mounting plate and the mounting frame is formed. It is possible to separate or combine the contact unit and the handle or key side by the hinge operation with the fulcrum as the fulcrum, and this separation and the start and end of the connecting work can be done by attaching and detaching one screw, so that it is possible to meet order specifications. It is possible to respond quickly to changes in specifications, and at the same time, gain the advantages of inventory management. Moreover, since the two wall surfaces of the joint hole that transmits the twisting force to the shaft of the contact unit are formed by using a material having a proof stress such as metal, an inexpensive joint made of a flexible synthetic resin can be used. The mechanical life can be provided without increasing the cost so much and the deformation of the holes during operation can be prevented. Also, the steering wheel pointing error at the time of notch switching can be kept small.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing a connecting structure of a contact unit and a handle side according to an embodiment of the present invention, FIG. 2 and FIG.
1 is a perspective view and a rear view showing the structure of the mounting plate and the mounting frame in FIG. 1, respectively, and FIGS. 4 and 5 show the positions of the holes of the mounting plate and the positions of the protrusions of the mounting frame in FIG. 1, respectively. 6A and 6B are explanatory views showing a shape example of the hole of the joint shown in FIG. 1 and a structural example of a side wall press-fitted into the hole, respectively.
FIG. 8 is a perspective view showing another example of the structure of the side wall, FIG. 9 is a side view showing the mounting state of the cam switch according to the present invention to the panel panel, and FIG. 10 is a contact unit in the cam switch according to the present invention. FIG. 11 is an explanatory view showing a method of separating from the handle side, FIG. 11 is a side view showing a state after separating the contact unit and the handle side in the cam switch of the present invention, and FIG. 12 is a key operation of the cam switch of the present invention. Fig. 13 is a side view showing the state of the key side after the contact unit is separated, Fig. 13 is a rear view of the contact unit in the cam switch of the present invention, and Figs. 14, 15 and 16 are respectively the conventional cam switch. It is a side view which shows a different structural example. 1: Contact unit, 2a, 22: Mounting plate, 2c: Stud,
3,23: Shaft, 4,24: Mounting frame, 7,27: Handle, 8,28: Key, 12: Panel, 13: Screw, 14,15, 16:
Side plate, 22a: hole, 22d: through hole (through hole for screw), 24a:
Protrusion, 24d: Female thread, 32: Fitting, 32a: Hole (insertion port), 32
aa: Vertical groove.

Claims (2)

[Scope of utility model registration request] 1. Flat box-shaped contact blocks each having a disc cam built therein are stacked in one or more stages, mounting plates are applied to both end faces of the stack, and the contact blocks are integrated by using through bolts or studs. And a contact unit arranged on the back side of the panel, with a common shaft for twisting and driving the disc cams protruding toward one side of the stack, with the shaft protruding side being the panel side. In a cam switch comprising a handle or a key mounted on the front side of the panel so that the shaft can be twisted,
A threaded through hole is formed at one end of the mounting plate on the protruding side of the shaft that extends outward in the same plane, and the other end is bent into an L shape toward the panel panel side in the stacking direction of the contact blocks. And an engagement surface having an engagement hole formed therein, and a projection engaging with the engagement hole and a female screw into which a screw is screwed through the screw through hole of the mounting plate when engaged. The frame is fixed to the back side of the panel and the end of the shaft of the contact unit is inserted when the mounting plate is engaged with the mounting frame and the mounting plate and the mounting frame are integrated by the screw. A joint that transmits the twisting force to the shaft end is connected to the handle or key, so that the contact unit and the handle or key side can be separated on the back side of the panel, and the through hole for screws in the mounting plate is used. Cam switch characterized in that it is integrated can be formed by one screw Te. 2. The cam switch according to claim 1, wherein the end of the shaft of the contact unit has two parallel surfaces for receiving a twisting force, and the shaft end of the joint for transmitting the twisting force to the shaft. A cam switch characterized in that the two wall surfaces of the part insertion port are formed by using side plates made of a material having a proof stress such as metal.