JPH07320595A - Switch device - Google Patents

Abstract

PURPOSE:To simplify an assembly task by reducing the number of parts on the fitting structure of the operation body for a switching operation to a body. CONSTITUTION:In a state that an operation body 18 is confronted a body 1 making its angle beyond a normal operation range, the spread portions 28a of engaging protrusions 28 formed on the respective confronting faces of the operation body 18 and the body 1 are inserted to spread holes 11, 12. Thereafter, the operation body 18 is turned against the body 1 so that the operation range of the operation body 18 is positioned within the normal range by an angle regulating means 14, 33. In this fitting stage. the spread portions 28a of the plural engaging protrusions 28 are displaced from the positions of the spread holes 11, 12 so as to engage with arc-like holes 9, 10. Further, a fulcrum shaft 27 and a cylindrical portion 6 are formed in the operation body 18 and the body 1 so as to fit in each other, and an engaging pawl formed at the tip of the fulcrum shaft 27 is pushed by a pushing member 32 in a radial direction so as to prevent the falling-out of the fulcrum shaft 27 in an axial direction. The loosening of the operation body 8 from the body 1 is prevented thereby.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention moves an operating body supported on one surface of a body within a certain angle range along the one surface of the body to move a sliding body having a movable contact. The present invention relates to a switch device that switches contacts.

[0002]

2. Description of the Related Art As an example of this type of switch device, there is a turn switch used for changing the course to the left or right in an automobile or the like. Hereinafter, the principle of the conventional turn switch will be described with reference to FIGS. 7 and 8. 10
Reference numeral 0 denotes a synthetic resin body, and an operating body 101 is rotatably held on one surface of the body 100. That is, the fulcrum shaft 102 formed on one surface of the operating body 101 is fitted into the fitting hole 103 formed in the upper surface of the body 100, and the retaining ring 104 is provided at a portion protruding from the fitting hole 103.
Is fastened. Further, a plate 10 for pressing the operating body 101 is provided on the upper ends of two bosses (not shown) which are arranged on both sides of the operating body 101 and are provided upright from the upper surface of the body 100.
Both ends of 6 are fixed by screws 105, and the plate 1
06 and the retaining ring 104 prevent the fulcrum shaft 102 from coming off the fitting hole 103.

Further, as shown in FIG. 7, the operating body 10 is
No. 1 has a cancel plate 107 and a pin 108 that elastically projects at the tip, and a mountain-shaped uneven surface 109 with which the pin 108 engages is formed on the body 100. Further, as shown in FIG. 8, the operating body 101 has an operating lever 111 that rotates about a pin 110 as a fulcrum, and the tip of the operating lever 111 is elastically engaged with an uneven surface 112 formed on the operating body 101. A matching pin 113 is provided.

Such a body 100 is arranged below a steering wheel (not shown) of an automobile, and the operating body 101 is rotated around the fulcrum shaft 102 along the upper surface of the body 100, and this operation causes the body 100 to rotate. A turn switch (not shown) provided inside is operated. Further, the operation lever 111 is rotated in a vertical direction orthogonal to the rotation direction of the operation body 101, and a dimmer switch (not shown) provided in the body 100 is operated by this operation.

[0005]

In the conventional example shown in FIGS. 7 and 8, the retaining ring 104 is fixed to the fulcrum shaft 102 to prevent the operating body 101 from floating from the body 100. When the end of the operating body 101 away from the shaft 102 receives a moment in a direction away from the body 100, the retaining ring 104 is likely to come off. Therefore, since the operating body 101 is pressed by the plate 106, the number of parts is increased. Moreover, a dedicated jig or tool is required to attach the retaining ring 104 and the plate 106, which complicates the assembly work.

[0006]

The invention according to claim 1 is
A switch device for switching a contact by moving a sliding body having a movable contact by rotating an operating body supported on one surface of a body within a certain operating range along the one surface of the body by an angle regulating means. A plurality of locking projections are integrally formed on the operating body or the body so as to face each other with the center of rotation of the operating body in between, and each of the locking projections has a widened portion at the tip thereof. A plurality of arcuate holes arranged on a radius centered on the rotation center of the operating body to slidably hold the intermediate portion of the locking projection, and the position of the operating body with respect to the body is In the switch device, an expansion hole is formed on the arc-shaped hole to allow the locking projection to be taken in and out including the expansion portion at a position outside the operation range.

According to a second aspect of the present invention, in the first aspect of the invention, the operating body or the body has a locking claw at its tip end that elastically bends in the radial direction orthogonal to the center of rotation of the operating body. Then, a fulcrum shaft that serves as the center of rotation of the operating body is provided, and a cylindrical portion having both end openings into which the fulcrum shaft is rotatably fitted is provided on the body or the operating body. It is a switch device provided with a pressing member for pressing the protruding locking claws to the outside.

[0008]

According to the first aspect of the present invention, the expanding portion of the locking projection is inserted into the expanding hole with the operating body facing the body at an angle outside the normal operating range. After that, the operating body is rotated with respect to the body so that the locking protrusion is located at a portion apart from the expanding portion on the arcuate hole, and the angle control means determines the normal operating range of the operating body. In this mounted state, the expanding portions of the plurality of locking projections facing each other with the center of rotation of the operating body in between are displaced from the position of the expanding hole and engage with the edge of the arc-shaped hole. The separating operation of the operating body from one surface of the body is reliably regulated at a plurality of positions away from the center of rotation.

According to the second aspect of the present invention, the fulcrum shaft is inserted into the cylindrical portion in order to pivotally support the operating body, and the locking claw formed at the tip of the fulcrum shaft is pressed by the pressing member. By pressing in the radial direction, the separating operation of the operating body from one surface of the body is reliably regulated even on the center of rotation of the operating body.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described by taking the combination switch shown in FIGS. 1 to 6 as an example. First, the plan view shown in FIG. 1 shows the structure of the body, the operating body, and the substrate. As shown in FIG. 1B, a body 1 has a hole 2 at its center for passing a steering shaft (not shown) of an automobile, and a plurality of concave portions adjacent to each other with a mountain-shaped slope therebetween. 3, 4, 5 and a cylindrical part 6 with both ends open
And the openings 7 and 8 and the two arcuate holes 9 and 10 arranged on the radius centered on the cylindrical portion 6, respectively. Vertical wall surfaces 9a and 10a are formed on the outer edges of the arcuate holes 9 and 10, and spread holes 11 and 12 are formed at the ends of the arcuate holes 9 and 10. further,
A small hole 13 and a projecting pillar 14 are formed on an extension of the arc-shaped hole 9. The functions of the small holes 13 and the columns 14 will be described later. Further, the body 1 is provided with a sliding body 16 having a protrusion 15 protruding upward from the opening 7 so as to be slidable along a radius centered on the cylindrical portion 6, and the opening 8 is provided. A sliding body 17 disposed below the is provided slidably in the radial direction from the cylindrical portion 6.

Next, the operating body 18 attached to the upper surface of the body 1 will be described with reference to FIG. This operating body 18 is provided with the concave portions 3, 4, 5 of the body 1.
A cancel plate 2 having a pin 19 urged in a direction of projecting toward and a pair of claws 20 and 21 formed on both sides.
2 and a swing arm 24 rotatably held by a pin 23 in a direction of ups and downs with respect to the upper surface of the body 1.
And the operating lever 2 inserted through the swing arm 24
5, a pin 26 biased in a projecting direction is held at the tip of the operation lever 25 so as to be retractable.
Further, on the body 1 side surface of the operating body 18, a cylindrical fulcrum shaft 27 rotatably fitted to the cylindrical portion 6 of the body 1 and the expansion holes 11 and 12 of the body 1 are provided. The extended portion 28a to be inserted is bent outward from the lower end, and the intermediate portion is retained by the arcuate holes 9 and 10 so as to be slidably held, and the protrusion 15 of the sliding body 16. And a boss 29 which is fitted to and moves the sliding body 16 is formed integrally.

Further, a substrate 30 attached below the body 1 is shown in FIG. 1 (c). This substrate 30 has
A hole 31 for passing a steering shaft and the fulcrum shaft 27
A projection 32 as a pressing member for radially pressing a locking claw (described later) formed at the tip of the upper end, and a small diameter portion 34 at the upper end.
Is a column 3 that protrudes from a small hole 13 of the body 1 and restricts the regular operating range of the operating body 18 together with the column 14.
And 3 are formed. Further, on the upper surface of the substrate 30, the movable contact 16 held by the sliding bodies 16 and 17 is provided.
A circuit including a fixed contact (not shown) whose contacts are switched by a and 17a (see FIG. 6) is formed.

Further, as shown in FIGS. 5 and 6, the operating body 18 is swung around the pin 35 by the pivotal movement of the swing arm 24 so that the sliding body 1 is moved.
A joint 36 for sliding 7 is provided. Further, the operation body 18 has a pin 2 at the tip of the operation lever 25.
A concave-convex surface 37 engaging with 6 is formed. Further, at the lower end of the fulcrum shaft 27, a plurality of locking claws 38 that are elastically bent in the radial direction around the fulcrum shaft 27 are integrally formed.

The right side of the body 1 and the substrate 30
As shown in FIG. 5, a sliding body 39 is rotatably held between the right side of the sliding body 39 and the right side of the sliding body 39 via the fulcrum shaft 40.
An operating lever 41 is rotatably held by a pin 42. Since the sliding body 39 and the operating lever 41 are not directly related to the present invention, they will be briefly described. The sliding body 39 rotates about the fulcrum shaft 40 as a fulcrum by operating the operation lever 41 in the horizontal direction, thereby operating the wiper switch and operating the fulcrum shaft 40 in the vertical direction to slide the sliding body 39. The moving body 43 is slid to operate the window washer switch.

When the operating body 18 and the substrate 30 are assembled to the body 1 with such a configuration, the operating body 18 is maintained in a posture slightly lower to the left than the normal operating range, as shown in FIG. To do. In this state, one small hole 13 of the body 1 is partially covered with the operating body 18,
The operation of inserting the small diameter portion 34 of the support column 33 of the substrate 30 into the small hole 13 is prohibited. Further, the pin 19 of the operating body 18 engages with the recess 4 of the body 1, but the pin 19 does not reach the recess 4 in the normal operating range. In this state, the fulcrum shaft 27
Is inserted into the cylindrical portion 6 of the body 1, and the locking projection 2
8 is used as the expansion hole 28a at the end of the arc-shaped holes 9 and 10.
Insert into Nos. 1 and 12. FIG. 3 shows the insertion process. In this process, the locking claw 38 at the lower end of the fulcrum shaft 27 elastically bends in the diameter reducing direction by the pressure from the inner peripheral surface of the cylindrical portion 6.

Then, with the fulcrum shaft 27 sufficiently inserted in the cylindrical portion 6 and the locking claw 38 protruding from the lower end of the cylindrical portion 6, the operating body 18 is centered around the fulcrum shaft 27 within the normal operating range. For example, return to the neutral position. In this state, as shown in FIG. 4, since the pin 19 engages with the recessed portion 3 at the center, the operating body 18
Can be stabilized. At this position, the small hole 13 of the body 1 is opened. When the substrate 30 is attached to the lower portion of the body 1 in this state, the small-diameter portion 34 of the column 33 of the substrate 30 is attached.
Is projected from the small hole 13, and the projection 32 of the substrate 30 is formed.
Is inserted into the lower end of the cylindrical portion 6 of the body 1. As a result, the locking claws 38 protruding from the lower end of the cylindrical portion 6 are engaged with the protrusion 32.
It is pressed by and fixed in a state of engaging with the opening edge of the cylindrical portion 6.

Next, the switching operation will be described. When the operating lever 25 is operated along the upper surface of the body 1, the operating body 18 rotates about the fulcrum shaft 27 as a fulcrum. By this operation, the sliding body 16 and the movable contact 1 held by the sliding body 16
6a (see FIG. 6) slides on the substrate 30 to switch the contact of the turn switch. In this case, the regular operating range of the operating body 18 with the fulcrum shaft 27 as a fulcrum is determined by the columns 14 and 33 which are disposed on both sides of the operating body 18 and function as angle restricting means for restricting the operation 18th operating range. Determined. Even if the small holes 13 similar to the small holes 13 are formed in place of the pillars 14 of the body 1 and the two pillars 33 protruding from these small holes 13 are formed on the substrate 30, the operation body 18 is rotated. The moving angle can be set. Further, when the operation lever 25 is rotated in the vertical direction, the swing arm 24 is rotated, so that the joint 36 swings so that the sliding body 17 and the movable contact 17a held by the sliding body 17 (see FIG. 6) are moved to the substrate 30. Slide up to switch the contact of the Dimmer switch.

During such an operation, the inward movement of the locking claw 38 projecting from the end of the cylindrical portion 6 is restricted by the projection 32, and further, it opposes with the fulcrum shaft 27 of the operating body 18 in between. The expanded portions 28a of the plurality of locking projections 28 that are engaged with each other are displaced from the positions of the expanded holes 11 and 12 and engage with the edges of the arcuate holes 9 and 10 (lower edges of the wall surfaces 9a and 10a). 1
It is possible to reliably restrict the operation of separating the operating body 18 from the upper surface of the body 1 on the fulcrum shaft 27 of 8 and at a plurality of positions (positions of the locking projections 28) away from the fulcrum shaft 27. Such an effect is obtained by providing the body 1 with the cylindrical portion 6 and the expansion hole 1
And the arc-shaped holes 9 and 10 having the numbers 1 and 12, and the operating body 1
Since the fulcrum shaft 27 and the locking projection 28 are formed in 8 and the projection 32 and the support column 33 are formed in the substrate 30, the structure can be obtained.
The number of parts and the number of assembly steps can be reduced.

A fulcrum shaft corresponding to the fulcrum shaft 27 and a locking projection corresponding to the locking projection 28 are formed on the body 1, and a cylindrical portion corresponding to the cylindrical portion 6 and arc-shaped holes 9 and 10 are formed. Even if an arcuate hole is formed in the operating body 18, the same effect can be obtained. In such a case, the pressing member that presses the locking claw at the tip of the fulcrum shaft in the radial direction may be formed as an independent member and press-fitted into one end of the cylindrical portion.

[0020]

According to the invention of claim 1, the operating body supported on one surface of the body is rotated within a certain operating range along the one surface of the body to provide a sliding body having a movable contact. In the switch device for moving the contacts to switch the contacts, the expansion part of the locking projection is inserted into the expansion hole with the operating body facing the body at an angle outside the normal operation range. After that, the operating body is rotated with respect to the body so that the locking projection is located at a portion apart from the expanding portion on the arcuate hole, and the angle control means determines the normal operating range of the operating body. In the attached state, the expanding portions of the plurality of locking projections facing each other with the center of rotation of the operating body in between are displaced from the positions of the expanding holes and engage with the edge of the arc-shaped hole, so that the operating body is not rotated. Separation of the operating body from one surface of the body at multiple locations away from the center of motion Since it is possible to reliably control the operation, and further, such an effect can be obtained only by forming the arcuate hole having the expansion hole and the locking projection on the facing surfaces of the operating body and the body, The number of parts and the number of assembly steps can be reduced.

According to the second aspect of the present invention, the fulcrum shaft is inserted into the cylindrical portion in order to rotatably support the operating body, and the locking claw formed at the tip of the fulcrum shaft is pressed by the pressing member. By pressing in the radial direction, the separating operation of the operating body from one surface of the body can be reliably regulated even on the center of rotation of the operating body.

[Brief description of drawings]

1A is a plan view of an operating body, FIG. 1B is a plan view of a body, and FIG. 1C is a plan view of a part of a substrate.

FIG. 2 is a plan view showing a relative positional relationship between a body and an operating body during assembly.

FIG. 3 is a partial vertical sectional side view showing a relative positional relationship among a body, an operating body, and a board during assembly.

FIG. 4 is a plan view showing a relative positional relationship between a body and an operating body after assembly.

FIG. 5 is a vertical cross-sectional side view showing the relative positional relationship among the body, the operating body, and the board after assembly.

FIG. 6 is an exploded perspective view of a main part.

FIG. 7 is a plan view showing a conventional example.

FIG. 8 is a vertical sectional side view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 body 6 cylindrical part 9 and 10 arcuate hole 11 and 12 expansion hole 14 angle regulation means 16 and 17 sliding body 18 operation body 27 fulcrum shaft 28 locking protrusion 28a expansion portion 32 pressing member 33 angle regulation means 38 locking nail

Claims (2)

[Claims] 1. A sliding body having a movable contact is moved to switch contacts by rotating an operating body supported on one surface of a body along a surface of the body within a certain operating range by an angle regulating means. In the switch device for
A plurality of locking projections are integrally formed on the operating body or the body so as to face each other with the center of rotation of the operating body in between, and each of the locking projections has an expanding portion at the tip thereof. A plurality of arcuate holes that are arranged on a radius centered on the center of rotation of the operating body and slidably hold the intermediate portion of the locking projection are formed, and the position of the operating body with respect to the body is the above-mentioned. A switch device, wherein an expanding hole is formed on the arc-shaped hole to allow the locking projection to be taken in and out including the expanding portion at a position outside the operation range. 2. A fulcrum shaft having a locking claw that is elastically bent in a radial direction orthogonal to a rotation center of the operation body at the tip of the operation body or the body and serving as a rotation center of the operation body. A cylindrical member having openings at both ends to which the fulcrum shaft is rotatably fitted is provided on the body or the operating body, and a pressing member for pressing the locking claw protruding in the radial direction from the cylindrical portion to the outside is provided. The switch device according to claim 1, wherein the switch device is provided.