JPH0520229U - Lever switch - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a lever switch that has excellent durability and that allows easy operation confirmation in the assembly process. [Structure] The lever shaft 2J of the lever 2 is supported by a fitting portion 40 formed in the switch body 4. Therefore,
The switches can be switched without being affected by the looseness or detachment of the switch lid 6. In addition, it is possible to confirm the operation before fixing the switch lid 6. Further, the packing 3 is a lever shaft
Since it is attached between 2J and the curved guide surface 22, the lever shaft
Waterproof and dustproof for 2J.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a lever switch structure, and more particularly to a structure for improving the durability of a lever switch by improving a lever shaft holding mechanism.

[0002]

[Prior Art]

 An outline of a conventional lever switch is shown in FIG. The operation bar 20 of the lever 2 penetrates the through hole 60 of the switch lid 6. Further, the lever 2 has a lever shaft 2J, and this lever shaft 2J is positioned in contact with a holding recess 6H of a holding arm 62 formed in the switch lid 6. In this state, the switch lid 6 is fixed to the switch body 4.

The switch body 4 has a built-in switching mechanism (not shown) that operates in accordance with notch switching, and a spring for notch structure (not shown) is attached to press the lever 2 in the direction of arrow 90. Due to this pressing force, the lever shaft 2J of the lever 2 is held in the holding recess 6H of the switch lid 6. That is, since the lever shaft 2J is constantly pressed against the holding recess 6H, the lever 2 can freely rotate about the lever shaft 2J in the directions of arrows 91 and 93.

A switching transmission unit 26 is provided at the end of the lever 2 located inside the switch body 4. The switching transmission unit 26 contacts the switching mechanism inside the switch body 4 to switch the notch of the lever 2. To the switching mechanism. A packing (not shown) is attached to the attachment position 25 in order to protect the switching mechanism in the switch body 4 and the switching transmission portion 26 from dust and water.

[0005]

[Problems to be solved by the device]

 However, the conventional lever switch has the following problems. The lever shaft 2J of the lever 2 is pressed and held by a holding recess 6H formed in the switch lid 6. Therefore, the switch lid 6 is constantly subjected to pressure in the direction of arrow 90, and there is a problem that the switch lid 6 is easily removed from the switch body 4. When the switch lid 6 becomes loose, the fulcrum position of the lever shaft 2J is also displaced in the arrow 90 direction. This impairs the state of connection between the switching transmission unit 26 and the switching mechanism in the switch body 4, causing a problem that the notch switching is not accurately transmitted and a malfunction occurs.

Further, in the structure shown in FIG. 3, it is not possible to easily confirm the operation of the product in the process of assembling the lever switch. That is, unless the switch lid 6 is fixed to the switch body 4 by finally incorporating the respective parts, the operation bar 20 cannot be rotated in the directions of arrows 91 and 93. Therefore, for a product in which a malfunction is found, the once fixed switch lid 6 has to be removed from the switch body 4, which causes a problem that the work efficiency of the assembling work is reduced.

[0007] Therefore, an object of the present invention is to provide a lever switch which has excellent durability and whose operation can be easily confirmed in the assembly process.

[0008]

[Means for Solving the Problems]

 A lever switch according to the present invention includes a lever having a lever shaft and a lever shaft holding portion that holds the lever shaft so that the lever rotates about the lever shaft, and a switching operation is performed according to the rotation of the lever. It features a switch body with a switching mechanism for performing the operation, and a switch lid that is fixed to the switch body by exposing the lever so that it can be operated from the outside.

[0009]

[Action]

 In the lever switch according to the present invention, the lever shaft is held by the lever shaft holding portion provided in the switch body, and the lever rotates about this lever shaft. The switch lid is fixed to the switch body with the lever exposed. As described above, the lever shaft is held in the lever shaft holding portion of the switch body independently of the switch lid.

Therefore, even if the switch lid comes off or is loosened from the switch body, the lever can operate properly without being affected. Further, since the pressing force of the spring or the like due to the switch switching structure is not applied to the switch lid, the switch lid can be prevented from coming off. Further, in the lever switch assembling process, it is possible to confirm the operation before fixing the switch lid.

[0011]

【Example】

 An embodiment of a lever switch according to the present invention will be described with reference to the drawings. Fig. 1 shows an exploded perspective view of the lever switch, and Fig. 2 shows an assembled sectional view. In FIG. 2, A and B are cross-sectional views of portions that differ by 90 degrees. As shown in FIGS. 1 and 2B, the lever 2 has a lever shaft 2J, and the operation bar 20 rotates in the directions of arrows 91 and 93 about the lever shaft 2J.

A spring 32 and a notch bar 33 are housed in the lever 2 (see FIG. 2). The spring 32 and the notch bar 33 are a mechanism for switching notches. On the other hand, a notch cam 7 is fitted and fixed in the switch body 4. As shown in FIG. 2B, the notch cam 7 is provided with a stop portion N1 and notch inclinations K1 and K2 by cutting, and a stop portion N2 is further formed on the side of the short inclination K1. Then, the lever 2 accommodating the spring 32 and the notch bar 33 is inserted into the switch main body 4 (arrow 92 direction in FIG. 1), and the lever shaft 2J is fitted into the fitting portion 40 formed in the main body 4. (See FIG. 2A).

By incorporating the lever 2 into the switch body 4, the tip end portion of the notch bar 33 comes into contact with the stop portion N1 of the notch cam 7 (FIG. 2B). When the operation bar 20 is rotated and operated in the direction of the arrow 91, the tip of the notch bar 33 slides the inclination K2 of the notch cam 7 accordingly, and the notch switching is performed. At this time, the spring 32 in the operation bar 20 is in a compressed state, and if the operation of the operation bar 20 in the direction of the arrow 91 is released, the spring 32 returns to the state shown in FIG. 2B. In other words, the operation in the direction of arrow 91 is a return type notch switch.

On the other hand, when the notch bar 33 is operated in the direction of arrow 93 from the state shown in FIG. 2B, the tip portion of the notch bar 33 slides on the inclination K1 of the notch cam 7. Since this inclination K1 is shorter than the inclination K2, the tip of the notch bar 33 fits into the stop portion N2 and stops at this position. When returning the notch to the stop portion N1, the operation bar 20 is rotated in the opposite direction of arrow 91. This lever switch is configured as a three-notch, one-return type switch in which notch switching is performed as described above.

As shown in FIGS. 1 and 2A, a switching transmission portion 26 is formed at the other end of the lever 2. The switching transmission portion 26 transmits the notch switching by the operation of the operation bar 20 to the operation plates 51, 52 as a switching mechanism housed in the switch body 4. That is, in response to the notch switching, the switching transmission portion 26 selects the protruding portion 53 or 54 formed on the operation plates 51 and 52 and presses it in the arrow 92 direction. This causes the plate arms 55 and 56 of the operation plates 51 and 52 to project from the switch body 4 in the direction of arrow 92, and the predetermined switch switching operation is performed based on this. The main body spring 31 presses the operation plates 51 and 52 in the direction of arrow 94, and the spring base 53 is fixed to the switch main body 4 to support the main body spring 31.

A packing 3 is attached to the lever 2 as shown in FIGS. The packing 3 has a packing hole 30 through which the lever 2 penetrates. The packing 3 is located between the guide curved surface 22 of the lever 2 and the lever shaft 2J, and has a waterproof and dustproof function. As described above, in this embodiment, the lever shaft 2J is located inside the switch body 4 with respect to the packing 3 (see FIG. 2A), and the lever shaft 2J can be waterproofed and dustproofed.

That is, in the conventional lever switch shown in FIG. 3, since the lever shaft 2J is supported by the holding arm 62 on the side of the switch lid 6, the lever shaft 2J cannot be covered with packing. Therefore, the packing is provided at the mounting position 25. On the other hand, in the present embodiment, the lever shaft 2J is waterproof and dustproof, so that the lever switch can be prevented from malfunctioning and the durability can be improved.

After the above-described assembling of the respective parts is completed, the switch lid 6 is fixed to the switch body. The switch lid 6 is provided with a through hole 60, through which the operating bar 20 of the lever 2 penetrates and is exposed and attached so as to be operable from the outside. Since the lever shaft 2J is fitted and held in the fitting portion 40 in the switch body 4, the operation of the lever 2 can be confirmed even before the switch lid 6 is fixed. Therefore, a malfunction can be detected before the switch lid 6 is fixed, and the work efficiency in the assembly process can be improved.

Further, the lever 2 can be operated even when the switch lid 6 is loosened or comes off, and the switch switching operation is ensured even in such a case. Further, the pressing force of the spring or the like due to the switch switching structure, for example, the pressing force of the spring 32 in the direction of arrow 94 is not applied to the switch lid 6. Therefore, the switch lid 6 can be prevented from coming off, and the durability of the product can be improved.

[0020]

[Effect of the device]

 In the lever switch according to the present invention, the lever operates properly without being affected even when the switch cover is removed or loosened from the switch body. Therefore, malfunction can be prevented. Further, since the pressing force of the spring or the like due to the switch switching structure is not applied to the switch lid, the detachment of the switch lid can be avoided. Therefore, a lever switch having excellent durability can be obtained.

Furthermore, in the lever switch assembling process, it is possible to confirm the operation before fixing the switch lid. Therefore, it is possible to easily confirm the operation and improve the work efficiency.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a lever switch according to the present invention.

2 is an assembled cross-sectional view of the lever switch shown in FIG. 1, and A and B are cross-sectional views of portions different by 90 degrees.

FIG. 3 is an exploded side view showing a conventional lever switch.

[Explanation of symbols]

 2 Lever 2J Lever shaft 4 Switch body 6 Switch lid 20 Operating lever 40 Fitting part

Claims (1)

[Scope of utility model registration request] 1. A lever having a lever shaft, a lever shaft holding portion for holding the lever shaft so that the lever rotates about the lever shaft, and a switching mechanism for performing a switching operation according to the rotation of the lever. A lever switch comprising: a switch body provided with a switch lid, and a switch lid that is fixed to the switch body by exposing the lever so that it can be operated from the outside.