JPS6335022Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch that detects whether a parking brake operating lever, that is, a parking lever, is in a specific operating position.

The driver forgets to return the parking lever to the inactive position and drives the vehicle with the parking brake applied, or forgets to return the parking lever to the activated position when parking the vehicle. Sometimes I get tired.

Therefore, in order to especially prevent forgetting to return the parking lever, a switch that is activated when the parking lever is moved to the non-operating position is generally attached to the lever body or a bracket that supports it so that it can be operated, and when the lever is in the operating position. In such a case, a warning lamp provided in the circuit including the above-mentioned switch, for example on an instrumental panel, is turned on to alert the driver.

This type of switch naturally needs to be compact in terms of installation space, but it is also strongly required to have a structure that can be mass-produced at low cost. However, in the conventional switch described above, at least two contact members are indispensable to constitute a contact point, and it is difficult to simplify the structure and reduce costs.

The purpose of this invention is to provide a parking lever switch that can be manufactured at a lower cost with fewer parts than conventional wisdom while still fully performing its functions. Another feature is that a projection is formed by bending and raising a part of the metal parking lever main body or a metal support member that operably supports the main body, and the projection functions as one of the contact portions forming the contact point of the switch. More specifically, a switch body made of an insulating material is fixed to the parking lever or support member in a state covering the protrusion, a metal contact member is provided movably within the switch body, and the contact member is secured by a spring. An actuation member is provided that is biased toward the protrusion and is movable relative to the switch body, so that when the parking lever body is actuated to a specific position, the actuation member comes into contact with the support member or the lever body. and move the contact member away from the protrusion;
Thus, the protrusion and the contact member are configured to function as a contact point.

The above-mentioned specific position of the lever body is not only the non-operating position where the parking brake is released, but also the activated position where the parking brake is in the braking state. It can also be used to confirm whether an operation has been performed or to prevent an operation from being forgotten.

By doing the above, it is possible to eliminate the need for the contact member of the ground side terminal, which was conventionally necessary.
Accordingly, the number of parts can be reduced and assembly can be made easier. As a result, even considering the bending of the protrusions mentioned above, it is possible to manufacture the switch at a lower cost compared to conventional switches, and the switch as a whole is generally mass-produced. Cost reduction is achieved.

Hereinafter, an embodiment in which the present invention is applied to a pull-up type parking lever will be described based on the drawings.

In FIG. 1, reference numeral 2 denotes a parking lever body made of metal, a part of which is bent at a substantially right angle to form a pair of protrusions 4. Lever body 2
As shown in FIGS. 3 and 4, in this part, a part of the lever main body 2 is made to protrude in the shape of a tongue in a direction perpendicular to the longitudinal direction, and a hole 6 for bending is formed in the tongue-like part.
is punched out, and the protruding portions of the hole 6 that are opposed to each other are bent and raised in parallel to form the protrusion 4. The lever main body 2 is rotatably supported by a support bracket (not shown) fixed to the vehicle body side by a pivot, and both of the lever main bodies 2 are made of steel.
A ratchet tooth is provided on one side of the lever body 2, and a ratchet pawl is provided on the other side of the support bracket, and the lever body 2 is held in an appropriate rotational position by their engagement. The formation position of the tongue-shaped portion, that is, the protrusion 4 on the lever body 2 can be freely selected as long as it can face a part of the support bracket, but in terms of appearance, it should be near the pivot portion of the body 2. It is desirable to set the protrusion 4 to a flange portion, which is necessary for the strength of the lever main body 2, and there is no need to provide a tongue-like portion.

As shown in FIG. 1, a switch body 12 is formed by openings of container-like cases 8 and 10 made of insulating material facing each other while covering the pair of protrusions 4.
is fixed to the lever body 2. Case 8,1
0 is preferably made of synthetic resin such as polyacetal or 6-nylon, and the reason why the switch body 12 has a split structure is to facilitate assembly of the switch components.

As shown in FIGS. 5 to 7, the case 8 has a rectangular bottom hole 14 at its bottom, and the hole 14
has a pair of positioning protrusions 16 that protrude outward from opposing edges of the third
The lever body 2 is fitted into the hole 6 of the lever body 2 shown in the figure, while the pair of protrusions 4 protrude from the bottom hole 14 into the case 8 when assembled to the lever body 2. A pair of engaging protrusions 18 are formed on the outer surface of the opposing sides of the case 8, and correspondingly, as shown in FIGS. A hole 20 is provided, and the opening of the case 10 is slightly larger than that of the case 8, so that the case 8 is fitted into the opening of the case 10 as shown in FIG. The cases 8 and 10 are integrated with the engagement protrusion 18 fitted into the engagement hole 20. The fitting between the two is allowed by their respective elastic deformations.

As shown in FIGS. 8 to 10, the case 10 is provided with a pair of fixing arms 22 extending parallel to the lever body 2 from near the opening thereof, and the distal ends of the fixing arms 22 are provided with engagement arms 22 facing inward. Stop protrusions 24 are formed respectively, and as shown in FIG.
The switch body 12 consisting of the cases 8 and 10 is fixed by hooking the tips of the lever bodies 2 to both side edges of the lever body 2. In addition, the third
As shown in Figures 1 to 4, engagement notches 26 are formed on both side edges of the lever body 2, and the arm portion 22 is positioned by engaging therein. Moreover, the reason why the inside tip of the arm portion 22 is largely chamfered is to facilitate elastic deformation when hooking the object.

As shown in FIG. 1, on the inner surface of the case 10, a circular convex portion 28 for spring positioning and a guide portion 30 in the shape of a round bar with a smaller diameter are integrally molded concentrically with the convex portion 28 for spring positioning. extends toward the center position between both protrusions 4 of the lever body 2. A push button 34 having a corresponding guide hole 32 is slidably fitted into the guide portion 30 . This push button 34 functions as an operating member and has a rectangular cross-sectional shape, and is inserted between the pair of projections 4 and the projection 16 of the case 8 shown in FIGS. It is made to protrude to the opposite side of the switch main body 12 with a slight gap therebetween.

A rectangular mounting projection 36 is formed in the axial direction at the inner end of the push button 34, and a contact plate 38 as a metal contact member is attached to each of the tip surfaces 40 of the projections 4 on this mounting projection 36. They are installed so that they can face each other. The contact plate 38 is
It is generally made of copper, and has a mounting hole 42 formed in the center as shown in FIGS. The push button 34 is fixed to the push button 34 by adhesive bonding. Therefore, the contact plate 34 is moved within the switch body 12 in the direction of coming into contact with and separating from the pair of protrusions 4 as the push button 34 slides.
At the same time, the push button 34 is prevented from slipping out from the guide portion 30.

As shown in FIG. 13, a pair of flanges 46 are formed at the inner end of the push button 34 in a direction perpendicular to the direction connecting the pair of protrusions 4 so as to be flush with the shoulder surface 44. and its flange 46 is the seventh
It can be engaged with both edge surfaces 48 of the bottom hole 14 of the case 8 shown in the figure. The meaning of this will be described later, but the flange 46 is designed so that it is slightly spaced apart from the both edge surfaces 48 when the contact plate 38 is in contact with the protrusion 4.

A coil spring 50 to which an appropriate compressive load is applied is interposed between the contact plate 38 and the case 10 constituting the switch body 12, and one end of the coil spring 50 is attached to the inner surface of the case 10 by the circular convex portion 28.
The other end is seated on the plate surface of the contact plate 36 so as to surround the mounting protrusion 36 of the push button 34. This spring 50
Accordingly, the contact plate 38 is connected to the pair of projections 4.
When the push button 34 is not actuated, it is pressed against and in contact with the tip surfaces 40 of both protrusions 4, as shown in FIG.
The contact plate 38 and the protrusion 4 serve as contacts for the switch. Lever body 2
It is common for the protrusion 4 to be painted, but the protrusion 4,
In particular, the tip surface 40 constituting the contact point is left in the same state as the bare surface of the material.

At one end of the contact plate 38, 11th to 12th
As is clear from the figure, in order to connect and fix the wiring cord, two cylindrically curved gripping parts 52 and 54 are formed, and the one formed with a larger diameter has a cord containing a covering material. The ends and the ends of the conductive wires from which the sheathing material has been removed are inserted into the smaller diameter ones, and are crimped and held.

Guide the above cord to the outside of the switch body 12,
In addition, in order to allow the cord to move in accordance with the movement of the contact plate 38, the switch body 12 has a longitudinal opening 58 with a hood 56 in the direction of movement of the contact plate 38, as shown in FIG. formed in parallel directions. That is, as shown in FIGS. 5 to 10, the cases 8 and 10 forming the main body 12 have hood portions 60 and 62 and elongated hole portions that constitute the opening 58 with the hood 56 when both are assembled. 64 and 66 are formed on the side walls near the corresponding corners, respectively. The reason why the hood 56 is provided is to maintain the dustproof function of the switch body 12 which also serves as a cover, and to reduce damage to the cord.

As mentioned above, the protrusion 4 of the parking lever body 2
The relative position of the switch including the lever body 2 with respect to the support bracket that rotatably supports the lever body 2 is such that when the lever body 2 is operated to the non-operating position, the push button 34 comes into contact with a part of the support bracket. position, or when the lever body 2 is pulled up to the operating position, the push button 3
4 may be chosen to contact the bracket. Its location is selected depending on the intended use of the switch, and in some cases there may be pushbutton 3 on the support bracket.
4 contact projections are formed or the bracket itself is conveniently shaped to actuate the push button 34.

In any case, when the lever body 2 is actuated to a specific position, the push button 34 comes into contact with a part of the bracket and moves in the direction of being pushed into the switch body 12, so that the contact plate 38 is moved by the spring. When the push button 34 is moved away from the protrusion 4 against the biasing force 50, and the push button 34 is separated from the bracket by operating the lever body 2, the contact plate 38 is brought into contact with the protrusion 4 as shown in FIG.

The switch is turned on and off in this way, but in normal usage, it is connected to a load connected in series to a circuit including a cord connected to the contact plate 38, the lever body 2, and the vehicle body, such as a parking lever. This is suitable for flashing a lamp to warn people who have forgotten to return the device. Note that depending on the circuit configuration, it is possible to operate the load in the circuit with the contact plate 38 and the protrusion 4 separated, so check whether the lever body 2 has been sufficiently raised to the operating position. It can also be used to blink lamps, etc.

In this switch, the protrusion 4 of the lever body 2
Since contact plate 3 also serves as a contact point,
8 is sufficient, and this embodiment has the advantage that the switch components other than the protrusion 4 of the lever body 2 can be preset as an independent assembly.

That is, after attaching the contact plate 38 to the push button 34 shown in FIG. 13, it is inserted into the bottom hole 14 of the case 8 shown in FIGS.
The spring 50 is positioned so that the push button 34 fits into the guide portion 30 of both cases 8,
10 are integrated into a pre-assembly. At this time, the flanges 46 of the push button 34 shown in FIG. 13 contact both edge surfaces 48 of the bottom hole 14 of the case 8, and the push button 34 is assembled alone
The spring 50 and the like are designed not to fall off from the switch body 12. The third assembly
- Fit the fixing arm portion 22 of the case 10 onto the lever body 2 in the state shown in FIG.
All you have to do is engage and fix it.

Therefore, it is possible to assemble only the above assembly in advance and store it in large quantities, and since it is very easy to assemble it to the lever body 2, it is easy to assemble the individual members to the lever body 2 one after another. Compared to this, the cost reduction effect is further enhanced.

By the way, in the case of this embodiment, push button 3 is pressed as described above.
4 is provided with a flange 46, so from the point of view of preventing the contact plate 3 from coming off, it is not necessarily necessary that the contact plate 3
8 need not be fixed to the push button 34, but it is also possible to fit it into the mounting protrusion 36 so as to be slidable in the direction of movement of the push button 34. In this case, displacement (rotation) of the contact plate 38 relative to the projection 4 is prevented by engagement with the mounting projection 36, and the push button 34 is prevented from coming off by the flange 46 coming into contact with the bottom of the case. When the push button 34 is operated, its shoulder surface 44 moves slightly to abut the contact plate 38 and separate it from the protrusion 4.

Next, another embodiment of the present invention will be described based on FIGS. 14 and 15.

70 is a parking lever main body, a square hole provided in a part thereof is burred to form an annular projection 72, and a resin case 74 is also formed.
A mounting hole 76 is formed. The case 74 has a rectangular tube shape with a bottom and is fitted into the mounting hole 76 so as to protrude toward the protrusion 72 side, and a flange 78 formed at the open end engages with the back surface of the lever body 70.

A pair of guide holes 80 are formed in the opposite sides of the case 74 in parallel with the center line from near the tip to the mounting hole 76.
0, a contact plate 82 is inserted with its movement in the width direction restricted. A coil spring 83 is installed with a preload between the contact plate 82 and the inner surface of the tip of the case 74, and its biasing force causes the contact plate 82 to come into contact with the protrusion 72 while being stretched across it. It is being

A push button 84 is slidably inserted into the opening side of the case 74, and its outer end protrudes outward from the flange 78, while a protrusion 86 protrudes from the center of the inner end surface. It is fitted into a mounting hole 88 formed in the contact plate 82 and fixed to the contact plate 82 with adhesive or the like. In addition, when fixing both, the mounting hole 8 of the contact plate 82
It is also possible to prevent the push button 84 from slipping out by bending the edge of the button 8 so as to be inclined toward the rising surface of the projection 86 and forcibly fitting it into the projection 86. .

The protrusion 72, contact plate 82, etc. are covered by a resin cover 9 placed over the outside of the case 74.
The cover 90 has an opening end surface seated on the plate surface of the lever body 70, and a mounting hole 92 from which the tip of the case 74 protrudes in the opposite end wall. A pair of engaging protrusions 94 formed on mutually opposing edge surfaces of the hole 92 are respectively engaged with the ends of the guide hole 80 of the case 74, and together with the case 74 constitute a switch body.

The contact plate 82 has a gripping portion 96 similar to the previous example,
98 and a corresponding elongated hooded opening 100 formed in the cover 90.

In the switch configured in this manner, the contact plate 82 and the protrusion 72 function as a point of contact by substantially the same function as in the previous embodiment.
If this example is adopted, the structure will be further simplified.

In addition, in the two embodiments detailed above,
The protrusions constituting the contact point were formed in a pair or in a ring shape, and the contact member came into contact with the protrusions while being supported at both ends. There is no problem.

Further, the projection is not limited to the parking lever main body, but can also be formed by bending and raising a part of the support member (the bracket in the previous example) that operably supports the parking lever main body. That is, the switch itself can be provided on the support member, and when the lever body is operated to a specific position, the lever body can be configured to come into contact with an operating member such as a push button of the switch. In some cases, the support member may be easier to form protrusions on and may be manufactured at a lower cost.

Further, in the previous example, only a pull-type parking lever was described, but the present invention is not limited thereto, and can also be applied to a so-called stake-type lever. In that case, if it is difficult to bend and raise a part of the stake-shaped lever body to form a protrusion, the protrusion may be formed on a support member that slidably supports the lever body.

It goes without saying that the present invention can be implemented in various combinations of the aspects described in detail above, and various other changes can be made based on the knowledge of those skilled in the art without departing from the scope of the claims for utility model registration. It can be carried out in an embodiment in which the following is added.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a switch which is an embodiment of the present invention, and FIG. 2 is a side view thereof. Third
FIG. 4 is a plan view and a front view showing a part of the lever main body in which a protrusion is formed. Figures 5 to 7 are a plan view, front view, and side view of the case that constitutes the switch body in Figures 1 and 2, and Figures 8 to 11 are the cases that constitute the switch body in the same way. FIG. 8 is a plan view, a front view, and a side sectional view (-cross-sectional view of FIG. 8). 1st
1 to 12 are a plan view and a front view of the contact plate in FIG. 1, etc., and FIG. 13 is a front view of the push button. Figure 14 and 1
5 is a cross-sectional view (-cross-sectional view in FIG. 15) and a longitudinal cross-sectional view (-cross-sectional view in FIG. 14) of a switch which is another embodiment of the present invention. 2, 7: Parking lever body, 4, 72: Protrusion, 8, 10: Case (switch body), 18:
Engagement projection, 20: Engagement hole, 22: Fixing arm section, 28: Circular convex section, 30: Guide section, 32: Guide hole, 34, 84: Push button (operating member), 38,
82: Contact plate (contact member), 46:
Flange, 50, 83: Coil spring, 7
4: Case (switch body), 90: Cover (switch body), 80: Guide hole, 94: Engagement protrusion.

Claims (1)

[Claims for Utility Model Registration] A protrusion formed by bending a part of a metal parking lever body or a metal support member that operably supports the body, and the parking lever in a state covering the protrusion. a switch body made of an insulating material fixed to the main body or a support member; a metal contact member movably provided within the switch body and biased toward the protrusion by a spring; It is movable,
an actuating member that moves in contact with the support member or the parking lever body to move the contact member away from the protrusion when the parking lever body is operated to a specific position, the protrusion and the contact member being a contact point; A parking lever switch characterized in that it is configured to fulfill the role of.