JPH10217923A - Parking brake device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow to return only an operation lever to the original position when necessary in the brake operating condition, and make a parking brake device into a small size in the up and down direction of a vehicle. SOLUTION: In this device, an intermediate plate 44 to compose a part of a wire winding member 14 is journalled at the side of a sector plate 12, and a plate form side member 112A to compose the rear part of a lever main body 112 is journalled at the further side part. And a leaf spring 128 is placed between both members in the condition deformed elastically. Consequently, a parking brake device 10 can be made in a small size in the up and down direction of the vehicle, compared with the case to provide a holding means such as a leaf spring at the upper side of the sector plate 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parking brake device capable of returning only an operation lever to an original position as required when a brake is operated.

[0002]

2. Description of the Related Art Conventionally, a center lever type parking brake device has been frequently used. Generally, in this type of center lever type parking brake device, the wire is pulled by pulling up the operating lever to bring the brake into an operating state, and the release button provided at the distal end of the operating lever is pressed down to lock down. The state is released so that the wire is loosened and the brake is not operated.

In the above-described parking brake device, when the operating lever is pulled up to bring the brake into the operating state, the operating lever projects upward from the seat cushion.
When taking out the luggage placed in the passenger seat from the driver's seat side or rotating the front seat for a nap or the like, there occurs a problem that the operation lever interferes with the luggage or the front seat. For this reason, a parking brake device has been proposed that allows the operating lever to be depressed as needed while maintaining the brake operating state (Japanese Utility Model Laid-Open No. 3-110973), and is disclosed in this publication below. The configuration described above will be schematically described.

FIG. 7 shows the parking brake device 150 in a state where the brake is not operated. As shown in this figure, the parking brake device 150 includes a base plate 154 fixed to the floor panel 152 in an upright state. A support shaft 156 is disposed below the base plate 154 in a penetrating state.
An intermediate lever 158 having a U-shaped cross section and a substantially fan-shaped side surface is pivotally supported at 56. Further, an operation lever 160 having a grip portion 160A on the front side and a U-shaped cross section on the rear side is also supported by the support shaft 156.

The top connecting the both sides of the above-mentioned intermediate lever 158 forms a contact surface 162, on which a plurality of recesses 164 are formed at appropriate intervals and a notch 166 is formed on the rear end side. Are formed. Further, a pawl 170 swingable around a support shaft 168 is pivotally supported between both side portions of the intermediate lever 158. Correspondingly, a pawl 170A of the pawl 170 is engaged with an upper end of the base plate 154. A ratchet plate 172 having ratchet teeth 172A to be detached is fixed.

[0006] A terminal 178 of a cable 176 extending from the floor panel 152 toward the intermediate lever 158 is supported by a support shaft 174 disposed on the front side of the intermediate lever 158. . Further, a torsion coil spring 180 is wound around the support shaft 174, and constantly biases the pawl 170A of the pawl 170 in the direction of engaging with the ratchet teeth 172A.

[0007] Between the two sides of the operation lever 160,
When the operation lever 160 is pulled up in the brake operating direction, an engagement pin 184 that engages with the top of the triangular cutout 182 formed on the lower edge side of the intermediate lever 158 to rotate the intermediate lever 158 in the same direction is provided. It is arranged. A projection 154A that projects forward is integrally formed on the front end side of the base plate 154, and functions as a stopper by interfering with the engagement pin 184 when the operation lever 160 is pressed down.

[0008] The grip 160A of the operating lever 160
A release button 186 is provided at the front end of the handle 160A. Further, a compression coil spring 190 is interposed between a rear end of the release button 186 and a projection 188 formed at a predetermined position inside the grip portion 160A. I have. Release button 18
The distal end of the connecting rod 192 is screwed into the rear end of the connector 6. Further, a release lever 196 pivotally supported by a support shaft 194 disposed between both side portions of the operation lever 160 is connected to a rear end of the connection rod 192. The release lever 196 includes a first arm 196A having a hook shape and a second arm 196B having a circular arc surface at the tip.

According to the above configuration, when the grip portion 160A of the operation lever 160 is gripped and pulled upward from the state shown in FIG. Mating pin 184
Engages the top of the notch 182 of the intermediate lever 158 to rotate the intermediate lever 158 in the same direction. As a result, the cable 176 is pulled and the brake is activated, and the pawl 170A of the pawl 170 pivotally supported by the intermediate lever 158 rides over the ratchet teeth 172A one by one and is engaged at the stop position. It is locked.
At this time, the second arm 196 of the release lever 196
The distal end of B is pressed against the contact surface 162 of the intermediate lever 158 by the urging force of the compression coil spring 190, thereby preventing the operation lever 160 from being accidentally rotated downward (falling).

On the other hand, when the operation lever 160 interferes when taking out the luggage placed in the front passenger seat from the driver's seat side, the operation lever 1 is not pressed without pressing the release button 186.
What is necessary is just to push down 60 directly. Thus, the operation lever 160 is pushed down while the second arm 196B of the release lever 196 slides on the contact surface 162. At this time, the pawl 170A of the pole 170 or the ratchet teeth 172
A, the intermediate lever 158
Does not rotate with the operation lever 160, and the locked state is maintained.

When the brake is not operated, the operation lever 160 is pulled up again until the engagement state by the engagement pin 184 is obtained.
Is pressed, the pawl 170 is swung by the first arm 196A of the release lever 196, and the engagement between the pawl 170A and the ratchet teeth 172A is released. Further, at this time, the hook-shaped first arm 196A is connected to the intermediate lever 158.
And the second arm 196 </ b> B is separated from the contact surface 162. By depressing the operation lever 160 while pressing the release button 186, the intermediate lever 158 is
And the first arm 196A, it is pushed down to the original position integrally with the operation lever 160.

[0012]

However, in the case of the above-described structure, the release lever 196 is provided to prevent the operation lever 160 from being inadvertently rotated downward when the parking brake device 150 is in the brake operating state.
The distal end of the second arm 196B is pressed against the contact surface 16 of the intermediate lever 158 by the urging force of the compression coil spring 190.
In order to adopt a configuration in which the operation lever 160 is pressed, the contact surface 162 needs to be secured in a range corresponding to the operation angle (rotation angle) of the operation lever 160. Therefore, the intermediate lever 158 on which the contact surface 162 is formed becomes large in the vertical direction of the vehicle,
As a result, the entire parking brake device 150 becomes larger in the vehicle vertical direction.

According to the above configuration, the release lever 196 for releasing the pawl 170 from the ratchet teeth 174A is provided.
It is necessary to connect the connecting rod 192 for operating the shaft at a position offset upward with respect to the support shaft 194, and this also promotes the above-described problem.

In view of the above facts, the present invention provides a parking brake device which can return only the operation lever to the original position as required when the brake is operated, and can be downsized in the vertical direction of the vehicle. Is the purpose.

[0015]

According to a first aspect of the present invention, there is provided a parking brake device according to the present invention, comprising: a base member fixed in an upright state between a driver seat and a passenger seat on a vehicle body floor; Wire pulling means which is shaped like a plate and is pivotally supported by the base member so as to be substantially parallel to the base member, and which rotates in a predetermined direction to pull a wire for operating a parking brake; A locking means for locking the wire pulling means at the position when the means rotates in the predetermined direction by a predetermined amount or more; a rod-shaped lever front part formed so as to be grippable and a plate-shaped lever rear part; An operation lever pivotally supported by the base member such that the rear portion of the lever is substantially parallel to the wire pulling means; and a lever front side of the operation lever. The release means for releasing the locked state of the wire pulling means by the lock means by a predetermined release operation, the lever rear portion of the operation lever and the wire pulling means are connected, and both the operation lever and the wire pulling means are not rotating. When the operating lever is rotated in the predetermined direction from the brake non-operating position, the lever rear portion of the operating lever and the wire pulling means are integrally rotated, and the wire pulling means is rotated in the predetermined direction by a predetermined amount or more to activate the brake operating position. A connecting means for rotating the lever rear portion of the operating lever relative to the wire pulling means when a rotational force is applied to the operating lever in a direction opposite to the predetermined direction while the operating lever is locked, and a lever rear portion of the operating lever. And the wire pulling means are interposed in an elastically deformed state, and a frictional engagement force due to an elastic restoring force is applied therebetween, When the operating lever is rotated integrally with the wire pulling means and the wire pulling means is locked at the brake operating position, the operating lever is held at the brake operating position by the frictional engagement force, and the operating lever in the holding state is held. And a holding unit that releases the holding state when a rotational force in a direction opposite to the predetermined direction that exceeds the frictional engagement force is applied.

According to a second aspect of the present invention, in the parking brake device according to the first aspect, the ratchet teeth provided on the base member and the rotation of the wire pulling means which are pivotally supported by the wire pulling means. A lock member that moves on the ratchet teeth, and a biasing unit that biases the lock member in a direction in which the lock member is engaged with the ratchet teeth. A release button protruding from the front, a front end connected to the release button, and a rear end disposed close to the lock member, and locked by performing a predetermined release operation including a pressing operation of the release button. And a rod for applying a pressing force to the member in the unlocking direction.

The operation of the present invention described in claim 1 is as follows. When the brake of the parking brake device is not operated, both the operating lever and the wire pulling means are not rotating, and are located at the brake non-operated position. In addition,
In this state, the wire for operating the parking brake is not pulled.

In order to bring the parking brake device into the brake operating state from this state, the following operation is performed. First, the operation lever at the brake non-operation position is rotated in a predetermined direction. In this case, since the rear part of the operation lever and the wire pulling means are integrally rotated by the connecting means, the wire pulling means rotates in a predetermined direction together with the operation lever.
When the rotation of the operation lever is stopped in a state where the wire pulling means has been rotated in the predetermined direction by a predetermined amount or more, the wire pulling means is locked at that position by the locking means. Further, since the wire is pulled by rotating the wire pulling means in a predetermined direction, the parking brake device is brought into a brake operating state.

At this time, if there is no holding means,
When the wire pulling means rotates in the predetermined direction by a predetermined amount or more and is locked at the brake operating position, when a rotational force in a direction opposite to the predetermined direction acts on the operating lever, the connecting means causes the lever rear portion of the operating lever to be pulled by the wire pulling means. (I.e., the operating lever falls from the brake operating position to the brake non-operating position by its own weight or the like).

However, in the present invention, the holding means is interposed between the rear portion of the operating lever and the wire pulling means in an elastically deformed state, and the frictional engagement force due to the elastic restoring force acts between them. For this reason, when the operating lever rotates integrally with the wire pulling means and the wire pulling means is locked at the brake operating position, the operating lever is held at the brake operating position by the frictional engagement force of the holding means. Therefore, the operation lever does not inadvertently rotate in the direction opposite to the predetermined direction.

When the operating lever is held at the brake operating position, when the driver's seat is rotated or the like, the operation lever, particularly the front portion of the lever, interferes to rotate the driver's seat. May interfere. In such a case, the following operation may be performed.

In other words, it is sufficient to hold the lever front portion of the operation lever and rotate it in the direction opposite to the predetermined direction as it is (just push it down). When the pressing force exceeds the frictional engagement force acting on the operating lever in the holding state, the holding state of the operating lever by the holding means is released. As a result, the operation lever is smoothly rotated to the brake inoperative position while obtaining an appropriate frictional resistance. When the operating lever is held at the brake operating position, the wire pulling means is also locked at the brake operating position, so that the wire pulling means is kept at the brake operating position unless a predetermined releasing operation is performed by the releasing means. Is held in. Therefore, the brake operation state is maintained as it is. This prevents the front portion of the operation lever from interfering with the driver's seat.

The above is the operation which is the basic premise of the present invention. The present invention is characterized in that the following operation can be further obtained.

That is, in the present invention, the wire pulling means is formed in a plate shape and is supported by the base member so as to be substantially parallel to the base member. The lever rear portion of the operation lever is also formed in a plate shape and is pivotally supported by the base member so as to be substantially parallel to the wire pulling means. From these facts, according to the present invention, the plate-shaped wire pulling means is formed on the base member fixed between the driver's seat and the passenger's seat on the vehicle body floor in an upright state. And the lever rear part of an operation lever will be arrange | positioned in parallel.

After taking this arrangement relationship, in the present invention,
As described above, the holding means is interposed between the rear portion of the operating lever and the wire pulling means in an elastically deformed state, and the operating lever is held at the brake operating position by applying a frictional engagement force due to elastic restoring force therebetween. It is made to let. That is, in the conventional structure, the holding unit is substantially located above the base member, but in the present invention, the holding unit is located on the side of the base member. For this reason, according to the present invention, the parking brake device is downsized in the vehicle vertical direction.

According to a second aspect of the present invention, the parking brake device is reduced in size in the vertical direction of the vehicle from the viewpoint of the locking means and the releasing means. That is, according to the present invention, the wire pulling means is locked by the locking member engaging with the ratchet teeth provided on the base member by the urging force of the urging means. When releasing the locked state, a predetermined release operation including a pressing operation of a release button is performed. When the release button is pressed, the rod connected to the release button is moved in the pressing direction of the release button. Since the rear end of the rod is located close to the lock member, the lock member receives a pressing force in the unlocking direction by the rear end of the rod.

In other words, according to the present invention, since the rod itself is brought into direct contact with the lock member to apply a pressing force to the lock member in the unlocking direction, the lock member required in the conventional structure can be used. A release member such as a release lever for releasing the engagement state with the ratchet teeth is not required.
Therefore, when the release member is provided, it is necessary to set a space in the vehicle vertical direction in advance by that amount. However, according to the present invention, the space is unnecessary, and the vehicle of the parking brake device is not required. Downsizing in the vertical direction is achieved.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is an exploded perspective view of the parking brake device 10, and FIGS. 2 to 4 show respective states of the parking brake device 10, and FIGS. A sectional view of a main part is shown. As shown in these figures, a parking brake device 10 according to the present embodiment schematically includes a sector plate 12 as a strength member and a wire winding portion disposed adjacent to the sector plate 12. 14 and an operation lever 16 fitted on the wire winding section 14. Less than,
Description will be made in this order. [Structure of Sector Plate 12] In particular, as shown in FIG. 1, the parking brake device 10 includes a sector plate 12 fixed to a floor panel (not shown). The sector plate 12 has a base portion 12A formed in a substantially fan shape when viewed from the side, and a pair of leg portions which extend downward from a front end portion and a rear end portion of the base portion 12A and are bent in directions away from each other. 12B. A bolt insertion hole 18 (see FIG. 2) is formed in the leg portion 12B, and a fixing bolt (not shown) is screwed into the bolt insertion hole 18 so that the sector plate 12 is fixed to the floor panel. Has become. Further, a cable fixing portion 12C extending rearward is integrally formed with the front leg portion 12B. A distal end portion of a cable 22 having a wire 20 (see FIG. 2) inserted through an axis portion is fixed to the cable fixing portion 12C with a clip 24. In addition, an annular sealing material 26 formed of sponge or the like is interposed between the back surface of the cable fixing portion 12C and the floor panel.

A through hole having a predetermined diameter is formed in the center of the base portion 12A of the sector plate 12. The cylindrical shaft portion 28A and the outer periphery of the end portion of the shaft portion 28A are formed in the through hole. The support body 28 including the formed flange portion 28B is inserted. The support 28 is welded to the base 12A of the sector plate 12. In addition, base 12A
Are formed with a pair of arc-shaped guide holes 30 and 32 around the outer periphery of the support 28. Further, ratchet teeth 34 are formed in a predetermined range at the upper end of the base 12A.

Further, a pair of small holes 36, 38 are provided side by side on the front side of the base portion 12A.
Using the parking brake switch 4 in the form of a block
0 is attached with a screw 42. It should be noted that a push-type switch 40 is provided at the top of the parking brake switch 40.
A is provided, and a small protrusion 40B formed with a female screw and a columnar small protrusion 40C for positioning and preventing rotation are formed on the side. [Configuration of Wire Winding Unit 14] The above-described sector plate 1
A wire winding portion 14 is provided on the second base portion 12A so as to sandwich it. The wire winding unit 14 includes a pair of intermediate plates 44 and 46 disposed on both sides of the base 12A of the sector plate 12 and a winding plate 48 disposed outside the intermediate plate 46 as main components. Have been. In addition, these intermediate plates 44,
Each of the winding plate 46 and the winding plate 48 is a press-formed product. (Structure of Intermediate Plate 44) The intermediate plate 44 is formed in a relatively thin flat plate shape, and a circular hole 50 is formed in the lower edge portion of the center portion so as to be rotatably fitted to the flange portion 28B of the support 28. Have been. An arc-shaped long hole 52 is formed in the intermediate plate 44 at the rear outer peripheral side of the circular hole 50. Further, a plurality of insertion holes 54, 56, 58, 60 are formed at predetermined positions on the upper edge side of the intermediate plate 44. At a predetermined position on the upper edge side of the intermediate plate 44 (between the insertion hole 58 and the insertion hole 60), a hook-shaped locking portion 62 formed by bending is integrally formed. Further, a predetermined position on the upper edge side of the intermediate plate 44 (the insertion hole 56 and the insertion hole 5).
8), a stopper 64 formed by cutting and raising is integrally formed. (Structure of Intermediate Plate 46) The intermediate plate 46 is disposed to face the intermediate plate 44 with the sector plate 12 interposed therebetween, and has a configuration substantially similar to that of the intermediate plate 44. Therefore, in the intermediate plate 46, the insertion holes 66, 68, 70, and 72 are formed coaxially with the insertion holes 54, 56, 58, and 60 of the intermediate plate 44, and an arc-shaped long hole 74 is formed. ing. A circular hole 76 is formed on the lower edge of the center of the intermediate plate 46 so as to be rotatably fitted to the shaft 28A of the support 28. further,
On the front end side of the intermediate plate 46, a bent hook-shaped switch pressing piece 78 is integrally formed. (Structure of Winding Plate 48) The winding plate 48 is disposed on the opposite side of the sector plate 12 with the intermediate plate 46 interposed therebetween. The take-up plate 48 is formed in a substantially rectangular shape, and a circular hole 80 is formed on the lower edge side of the central portion thereof so as to be rotatably fitted to the shaft portion 28A of the support 28 together with the intermediate plate 46. Also, the winding plate 48
At a predetermined position, an elongated hole 82 of the same shape is formed at the same position as the elongated hole 74 of the intermediate plate 46, and an insertion hole 84 is formed coaxially with the insertion hole 66. Also,
A flange 86 having an L-shaped cross section is formed in a predetermined range on the outer peripheral portion of the winding plate 48. Further, the flange 86
Is folded back so as to have a hat-shaped cross section (hereinafter, this portion is referred to as a "folded portion 86A").
).

The winding plate 48 having the above-described configuration
0, the long hole 82, and the insertion hole 84 are circular holes 7 of the intermediate plate 46.
6. After being positioned so as to be coaxial with the long hole 74 and the insertion hole 66, it is fixed to the intermediate plate 46 by welding. When the winding plate 48 is fixed to the intermediate plate 46, a wire winding groove 88 having a U-shaped cross section is formed by the flange 86 of the winding plate 48 and the intermediate plate 46. Further, the flange 86 of the winding plate 48
A wire housing portion 90 having a rectangular cross section is formed by the folded portion 86A and the intermediate plate 46. Then, after the wire 20 pulled out from the cable 22 is wound around the wire winding groove 88, the wire 20 is inserted into the wire housing portion 90,
A nut 92 (see FIG. 2) is screwed into a screw portion provided at the wire end portion, so that the nut 92 is fixed to the outlet portion of the wire housing portion 90. (Assembling Structure of Intermediate Plates 44 and 46, etc.) The above-described one intermediate plate 44 and the other intermediate plate 46 are connected to each other at a plurality of positions as described below.

That is, the insertion hole 54 of the intermediate plate 44
A cylindrical spacer 94 is interposed between the intermediate pin 46 and the insertion hole 66 of the intermediate plate 46, and in this state, the connecting pin 96
Are inserted into the spacer 94 and the insertion hole 84 of the take-up plate 48, and the leading ends are swaged to connect the two. The spacer 94 and the connecting pin 96
Are inserted into the guide holes 30 of the sector plate 12.

A cylindrical spacer 98 is interposed between the insertion hole 56 of the intermediate plate 44 and the insertion hole 68 of the intermediate plate 46. In this state, the connecting pin 100 is inserted into the spacer 98 and Both are connected by caulking the tip. In this spacer 98,
The pole lever 102 is pivotally supported. Pole lever 1
An engagement claw 102A that can be engaged with the ratchet teeth 34 is formed on the lower end side of 02. Also, the pole lever 10
A step portion 102B is formed at the upper end portion of 2. Further, a contact portion 10 is provided at the upper rear end side of the pole lever 102.
2C is formed.

Further, a connecting pin 104 is inserted into the insertion hole 58 of the intermediate plate 44 and the insertion hole 70 of the intermediate plate 46, and the two are connected by caulking the tips. The coil portion of the torsion coil spring 106 is wound around the connection pin 104. One end (rear end) of the torsion coil spring 106 is locked by the locking portion 62 of the intermediate plate 44 described above.
The other end (front end) of the torsion coil spring 106 is in contact with the contact portion 102C of the pole lever 102. Accordingly, the torsion coil spring 106 causes the pawl lever 102 to engage the pawl lever 102 with the ratchet teeth 34.
Is constantly biased in the direction in which it meshes.

Further, a cylindrical spacer 108 is interposed between the insertion hole 60 of the intermediate plate 44 and the insertion hole 72 of the intermediate plate 46.
The two are connected by inserting 0 into the spacer 108 and caulking the tip. [Configuration of Operation Lever 16] The operation lever 16 is fitted on the wire winding section 14 so as to sandwich the same. The operation lever 16 is a metal lever body 11.
2 and a cover 114 fitted on the lever body 112
And a rod 116 mounted in the lever main body 112 and its related components are configured as main components. (Structure of Lever Body 112) The lever body 112 includes a pair of side portions 112A and 112B arranged outside the pair of intermediate plates 44 and 46 of the wire winding portion 14, and upper edges of these side portions 112A and 112B. And a lever portion 112C formed in a substantially pipe shape.

An insertion hole 117 having a predetermined diameter is formed on the rear side of the lower end of the pair of side portions 112A and 112B. The insertion holes 117 are provided in the intermediate plates 44 and 4.
6, the long holes 52, 74, and the long holes 8 of the winding plate 48.
2 and the guide holes 32 on the rear side of the sector plate 12.
7, the connecting pin 118 is inserted into the long holes 52, 74, 82 and the guide hole 32, and the distal end portion is caulked, so that the lever body 112 is connected to the wire winding portion 14 and the sector plate 12 mutually. ing.

An insertion hole 119 having the same diameter as the insertion hole 117 is formed in the center of the lower end of the pair of side portions 112A and 112B. The insertion hole 119 is formed coaxially with respect to the support 28 of the sector plate 12. When the cylindrical collar 120 is inserted into the shaft 28 </ b> A of the support 28, the insertion hole 119 and the collar 120 are formed. The lever main body 112 is pivotally supported by the sector plate 12 by inserting the pivot support pin 122 therein and caulking the tip thereof. Therefore, the lever body 112
Rotates about the pivot pin 122 as the center of rotation.

Further, insertion holes 123 are respectively formed on the upper edge sides of the pair of side portions 112A and 112B.
A holding pin 124 having a holding function in relation to a rod 116 described later is inserted into these insertion holes 123, and the tips of the holding pins 124 are swaged to form the insertion holes 123.
A support shaft is formed at the formation position of.

A holding member 126 bent in a U-shape is provided at the rear portion on the upper edge side of the pair of side portions 112A and 112B.
The legs (see FIG. 2) are fixed by welding or the like. When the holding member 126 is fixed, the holding member 126 protrudes upward and rearward.
Plays a role in ensuring the shape retention of

Further, in the present embodiment, one side 11
A leaf spring 128 having a substantially rectangular shape in a side view is disposed at a predetermined position on the inner surface of the 2A. The leaf spring 128 includes a rectangular flat support portion 128A and a lock portion 12 extending from the rear end of the support portion 128A and having a C-shaped cross section.
8B, and a narrow locking portion 128C extending from the front end of the support portion 128A and having a columnar projection at the front end. The leaf spring 128 is connected to one side 1.
Locking portion 128C is inserted into a small hole formed at a predetermined position of 12A.
With the rivet 130 at a predetermined inclination angle.
Is fixed to the side portion 112A. The locking portion 128C functions as a stopper for the leaf spring 128. When the leaf spring 128 is fixed and all the assembly is completed, the support portion 128A is interposed between the one side portion 112A and the intermediate plate 44 in an elastically deformed state, and the lock portion 128B is connected to the intermediate plate 44. The rear end 44A is frictionally engaged with an elastic restoring force by friction (see FIG. 5). (Configuration of the cover 114) The cover 114 is
The cover main body 114A includes a cover main body 114A that covers upper portions of the pair of twelve side portions 112A and 112B, and a tubular grip portion 114B that extends forward from a front upper end portion of the cover main body 114A. The cover 114 is
While being inserted into B, the lever portion 112C of the lever body 112 is fitted onto the upper portion of the lever body 112. When the cover 114 is fitted to the lever body 112, the top of the holding member 126 fixed to the lever body 112 contacts the inside of the rear end of the cover body 114A, and the rear end of the cover body 114A Inadvertent deformation is prevented. (Configuration of Rod 116 and Related Parts) Rod 116
Is formed by bending the rear end of a straight rod-shaped member into an inverted S-shape. A disc-shaped locking end 116 </ b> A is formed at the distal end of the rod 116, and the locking end 116 </ b> A is locked in the inserted state into a release button 132 having a substantially cylindrical shape. ing. A compression coil spring 134 having a relatively low set load is disposed inside the release button 132. Further, a locking claw 138 formed by cutting and raising is formed at an intermediate portion in the axial direction of the lever portion 112C, and a return spring which is a compression coil spring is provided between the locking claw 138 and the rear end of the release button 132. 140 are provided. The return spring 140 constantly urges the release button 132 in a direction in which the release button 132 projects from the distal end of the grip portion 114B.

The bent portion 116B of the rod 116, which is bent in an inverted S-shape, is locked by the holding pin 124 inserted and fixed into the insertion hole 123 of the lever body 112 described above. When the bent portion 116B is locked to the holding pin 124, the rear end portion 116C of the rod 116 is arranged close to the front side of the step portion 102B of the pole lever 102 described above.

Next, the operation and effect of this embodiment will be described. The state shown in FIG. 2 is the inoperative state (released state) of the parking brake device 10. As shown in this figure, when the brake is not operated, the operation lever 16 is positioned substantially parallel to the floor panel.
In the non-operating state of the brake, the intermediate plate 46
Switch pressing piece 78 is the parking brake switch 4
The 0 switch 40A is pressed.

Further, in the brake non-operation state, the other end of the torsion coil spring 106 is connected to the pole lever 1.
02 is in contact with the contact portion 102C of the pole lever 1 and the pole lever 1
02 is pressed against the portion of the sector plate 12 where the ratchet teeth 34 are not formed. In this state, both sides 112A, 112B of the lever main body 112 are in this state.
Are located at the lower ends of the slots 52, 74, 82 of each plate constituting the wire winding section 14 and at the upper ends of the guide holes 32 of the sector plate 12. . Further, in this state, the lock portion 128B of the leaf spring 128 is frictionally engaged with the rear end edge 44A of the intermediate plate 44 (the portion viewed in the direction of the arrow P in FIG. 1).

Next, when the parking brake device 10 is brought into the operating state (normal use state) from the brake non-operating state, the gripping portion 114B of the operating lever 16 is gripped as shown in FIG. What is necessary is just to rotate in the direction of arrow P (this direction is the "predetermined direction" of claim 1) around the pivot support pin 122 (that is, it is sufficient to pull it up upward).

When the operating lever 16 is rotated in the direction of the arrow P, the connecting pins 118 cause the elongated holes 52, 7
Since the lower ends of the wires 4 and 82 are pressed in the same direction, the wire winding portion 14 is also integrally rotated in the same direction by the same amount of rotation.
At this time, the connecting pin 118 moves downward while being guided by the guide hole 32 of the sector plate 12, and
The connecting pin 96 moves upward while being guided by the guide hole 30 of the sector plate 12. Thereby, the wire 20 is pulled and wound up in the wire winding groove 88 formed by the intermediate plate 46 and the winding plate 48. As a result, the parking brake main body connected to the wire 20 is activated.

Further, as the wire take-up part 14 is rotated in the direction of arrow P, the pole lever 102 pivotally supported by the connecting pin 100 moves in the same manner, and the ratchet teeth 3
Go over 4 one tooth at a time. As a result, the engaging claw 10 of the pawl lever 102 is
2A is engaged with the ratchet teeth 34 to be locked. Further, even in this brake operating state, the lock portion 128B of the leaf spring 128 continues to move the intermediate plate 4
4 is frictionally engaged with the rear end edge 44A by urging force.

Next, from this brake operating state, the gripper 1 of the operating lever 16 is rotated by rotating the front seat or the like.
In the case where the lever 14B interferes, as shown in FIG.
What is necessary is just to push it down in the direction (this direction is the "opposite direction to the predetermined direction"). In this case, since the engaging claw 102A of the pawl lever 102 and the ratchet teeth 34 are engaged, the locked state is maintained. Therefore, the wire winding section 14 does not rotate in the arrow Q direction.

On the other hand, when the connection pin 118 is viewed, a stroke (escape) enough to move in the direction of arrow Q is ensured (that is, in the state shown in FIG. 3,
The overlapping margin between the long holes 52, 74, 82 of the wire winding section 14 and the guide holes 32 of the sector plate 12 is
Is secured as a movement stroke in the direction of arrow Q), the operation lever 16 is rotatable around the pivot pin 122 in that direction.

Therefore, the grip portion 114B of the operation lever 16
The pressing force applied to the lock portion 128B of the leaf spring 128
Above the frictional engagement force of the lever body 1
12 is further elastically deformed in a direction approaching one side portion 112A, and the locked state with the rear end edge 44A of the intermediate plate 44 is released (see FIG. 6). Thereby, the leaf spring 128
While the lock portion 128B slides on the inner side surface of the intermediate plate 44, only the operation lever 16 can be pushed down.

From this state, the parking brake device 1
When returning 0 to the non-operation state (release state), the following may be performed. That is, first, the operation lever 1
6 from the position shown in FIG.
Return to the position shown. As a result, the lock portion 128B of the leaf spring 128 again moves the rear end edge 44 of the intermediate plate 44.
A is frictionally engaged to be in a locked state.

Next, while pressing the release button 132,
The grip portion 114B of the operation lever 16 is slightly pulled up as it is. When the pressing operation of the release button 132 is performed, the release button 132 is pressed against the urging force of the return spring 140, but the compression coil spring 134 having a relatively low set load is set separately from the return spring 140. A relatively low pressing force acts on the rod 116 without applying a pressing force corresponding to the movement stroke of the release button 132. The rod 116 is slightly moved rearward by the pressing force while being guided by the holding pin 124, and slightly presses the step portion 102B of the pole lever 102. However, since the pressing load alone does not exceed the engaging load between the engaging claw 102A of the pole lever 102 and the ratchet teeth 34, the locked state is not released. Further, by rotating (pulling up) the operation lever 16 while maintaining this state, the pole lever 102 is rotated.
Is rocked around the connecting pin 100 in the unlocking direction to release the locked state. By the way, such a two-operation release structure is adopted because the release button 13 is inadvertently operated in the parking brake device 10 operating state.
This is to prevent the brake operation state from being released even when the occupant's hand or the like hits 2.

As described above, in the present embodiment, the intermediate plates 44 and 46 and the winding plate 48, which are the main components of the wire winding section 14, are formed in a flat plate shape and arranged in parallel with the sector plate 12. On the side of the sector plate 12, and on both sides 1 of the lever body 112.
12A is also formed in the shape of a flat plate and arranged in parallel with the wire winding portion 14, and is pivotally supported by the sector plate 12, so that the floor panel is provided between the driver's seat and the passenger's seat. These members are arranged in parallel with the sector plate 12 fixed in the upright state. In the present embodiment, after taking this arrangement relationship, the leaf spring 128 is interposed between the one side portion 112A of the lever main body 112 and the intermediate plate 44 in an elastically deformed state, and its elastic restoring force is obtained. By applying a frictional engagement force between the two, the operation lever 16
Is held at the brake operating position, the holding means (that is, the leaf spring 128) can be installed on the side of the sector plate 12. Therefore, according to the present embodiment, the parking brake device 10 is downsized in the vertical direction of the vehicle as compared with the case where the holding means is substantially located above the base member (in the case of the conventional structure). be able to.

Further, in this embodiment, the release button 13
Since the rear end portion 116C of the rod 116 is directly brought into contact with the step portion 102B of the pole lever 102 by the pressing operation of 2, the pressing force in the unlocking direction is applied to the pole lever 120. A release member such as a release lever for releasing the engaged state between the lock member and the ratchet teeth can be eliminated. For this reason, when a release member is separately provided, it is necessary to set a space in the vehicle vertical direction in advance by that amount,
According to the present embodiment, the space becomes unnecessary. Therefore, it is possible to further reduce the size of the parking brake device 10 in the vertical direction of the vehicle.

The above is the basic effect of the present embodiment. According to the present embodiment, the following effects can be obtained.

First, in the case of the conventional structure, since the intermediate lever is formed in a U-shape and arranged so as to straddle the base plate, in addition to the press punching,
Bending and drawing are required, and there is a disadvantage that the manufacturing process is complicated. However, according to the present embodiment, since the intermediate plates 44 and 46 and the winding plate 48 that constitute the main components of the wire winding section 14 are all formed in a flat plate shape, only press punching is required. . Therefore, the manufacturing process can be simplified, and the productivity of the parking brake device 10 can be improved.

Secondly, in the case of the conventional structure, when tuning the depression load of the operation lever,
Since it is necessary to change the set load of the compression coil spring, there is a disadvantage that the release load by the release button fluctuates, which greatly affects the operation feeling. In addition, when increasing the pushing load of the operation lever, it is necessary to consider the strength of the release button. However, according to the present embodiment, it is possible to easily and independently tune the load for pushing down the operation lever 16 by appropriately changing the thickness of the leaf spring 128 and the margin of the leaf spring 128 catching on the intermediate plate 44. Can be. Therefore, there is an advantage that the operation feeling of the release button 132 is not affected at all.

In the present embodiment, one end of the leaf spring 128 (the locking portion 128C side of the support portion 128A) is fixed to one side 112A of the lever body 112, and the other end (the lock) of the leaf spring 128 is locked. Part 128B) to the intermediate plate 4
4, but is not limited to this, one end of a leaf spring is fixed to the intermediate plate 44,
The other end of the leaf spring is connected to one side 1 of the lever body 112.
A configuration for locking to 12A may be adopted. For example, a portion corresponding to a leaf spring is punched out in advance on the rear end edge 44A side of the intermediate plate 44 by a press, and is folded back, and the other end of the leaf spring is locked at a predetermined position on one side portion 112A. A concave portion, an opening, or the like that can be formed may be formed.

In this embodiment, the leaf spring 128 is used. However, the present invention is not limited to this, and a function corresponding to the leaf spring 128 can be exerted by a biasing means such as a disc spring. In short, taking into account the relative rotational trajectory between the intermediate plate 44 and one side portion 112A of the lever body 112, it is possible to apply a frictional resistance force caused by an urging force (elastic restoring force) between the two. If possible, all the holding means of the present invention can be applied.

Further, in this embodiment, the intermediate plates 44 and 46 are arranged on both sides of the sector plate 12 from the viewpoints of ensuring the structural stability based on the sector plate 12 and the strength of the sector plate 12. A configuration in which the pair of side portions 112A and 112B of the lever main body 112 are arranged on both sides is adopted, but the present invention is not limited to this, and a wire winding portion is arranged on one side of the sector plate 12 and further adjacent to the wire winding portion. Alternatively, the side portion of the unified lever body may be arranged.

Further, in the present embodiment, from the viewpoint of miniaturization of the entire apparatus, a configuration is adopted in which the wire 20 is pulled and wound around the wire winding section 14. However, the present invention is not limited to this.
A configuration in which only 0 is pulled but not wound up may be adopted.

Further, in this embodiment, the release button 13
The parking brake device 10 is changed from the brake operating state to the brake non-operating state (released state) by a two-operation method of pressing operation 2 and rotating the operation lever 16. However, the present invention is not limited to this. A configuration may be adopted in which the locked state is released directly by the pressing operation of.

[0063]

As described above, in the parking brake device according to the first aspect of the present invention, the wire pulling means for pulling the wire for operating the parking brake is formed in a plate shape and is substantially parallel to the base member. The base member is rotatably supported by the base member, and the lever rear portion of the operation lever is formed in a plate shape, and is rotatably supported by the base member so as to be substantially parallel to the wire pulling means. After taking the relationship, the operating lever is held at the brake operating position by the frictional engagement force by the elastic restoring force, and the holding state is changed when the operating lever in the holding state is applied with a rotational force exceeding the frictional engagement force. Since the holding means to be released is interposed between the rear part of the operating lever and the wire pulling means while being elastically deformed,
When the brake is actuated, only the operation lever can be returned to the original position if necessary, and the size of the vehicle can be reduced in the vertical direction.

According to a second aspect of the present invention, in the parking brake device according to the first aspect, the ratchet teeth provided on the base member and the rotation of the wire pulling means which are pivotally supported by the wire pulling means. And a biasing means for biasing the lock member in a direction in which the lock member is engaged with the ratchet teeth. A release button protruding from the portion, a front end portion connected to the release button, a rear end portion disposed close to the lock member, and a predetermined release operation including a pressing operation of the release button performed. And a rod for applying a pressing force in the unlocking direction to the vehicle, so that the size of the vehicle in the vertical direction can be further reduced. It has an excellent effect say.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a parking brake device according to an embodiment.

FIG. 2 is a side view showing a non-operating state of the brake of the parking brake device shown in FIG. 1;

FIG. 3 is a side view showing a brake operation state of the parking brake device shown in FIG. 1;

FIG. 4 is a side view showing a state where only the operation lever is pushed down to an original position from the state shown in FIG. 3;

FIG. 5 is a cross-sectional view showing a state of a leaf spring when the brake shown in FIG. 3 is operated.

FIG. 6 is a cross-sectional view showing a state of a leaf spring when the operation lever shown in FIG. 4 is pressed down.

FIG. 7 is a side view showing a parking brake device according to a conventional example in a brake non-operation state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Parking brake device 12 Sector plate (base member) 14 Wire winding part (wire pulling means) 16 Operation lever 20 Wire 30 Guide hole (connection means) 32 Guide hole (connection means) 34 Ratchet teeth (lock means) 52 Slot (Connecting means) 74 Slot (connecting means) 82 Slot (connecting means) 96 Connecting pin (connecting means) 100 Connecting pin (connecting means) 102 Pole lever (lock member, locking means) 104 Connecting pin (connecting means) 106 Torsion coil spring (biasing means, locking means) 110 Connecting pin (connecting means) 112A One side (lever rear) 112B One side (lever rear) 112C Lever (front lever) 116 Rod (release) Means) 118 connecting pin (connecting means) 128 leaf spring (holding means) 132 release button (Releasing means)

Claims (2)

[Claims] 1. A base member fixed in an upright state between a driver seat and a passenger seat on a vehicle body floor, a base member being formed in a plate shape and being substantially parallel to the base member. A wire pulling means that is pivotally supported by the base member and pulls a wire for operating a parking brake by rotating in a predetermined direction; and when the wire pulling means rotates in the predetermined direction by a predetermined amount or more, the wire pulling means includes: A locking means for locking at that position; a rod-shaped lever front part formed so as to be grippable and a plate-shaped lever rear part, and a base such that the lever rear part is substantially parallel to the wire pulling means. An operating lever pivotally supported by a member, and a lever provided on a lever front side of the operating lever, the locking means for locking the wire pulling means by a predetermined releasing operation. And release means for releasing the click state, the lever rear and the wire pulling means of the operating lever is connected,
When rotating the operating lever in the predetermined direction from the brake inoperative position where both the operating lever and the wire pulling means are not rotating, the lever rear portion of the operating lever and the wire pulling means are integrally rotated, and the wire pulling means is When a rotational force in a direction opposite to the predetermined direction is applied to the operation lever in a state where the operation lever is rotated in the predetermined direction by a predetermined amount or more and locked at the brake operation position, the lever rear portion of the operation lever is moved to the wire pulling means. The coupling means for relative rotation, and the elastically deformed state interposed between the lever rear portion of the operation lever and the wire pulling means, and the frictional engagement force due to the elastic restoring force acts between them, and the operation lever is connected to the wire pulling means. When the wire pulling means is locked in the brake operating position by integrally rotating, the operating lever is moved by the frictional engagement force to the brake. Holding means for holding in the key operating position and releasing the holding state when a rotational force in the opposite direction to the predetermined direction exceeding the frictional engagement force is applied to the operating lever in the holding state. A parking brake device characterized by the above-mentioned. 2. A ratchet tooth provided on a base member, a lock member pivotally supported by the wire pulling means and moving on the ratchet tooth with rotation of the wire pulling means, and engaging the lock member with the ratchet tooth. And a biasing means for biasing the lock member in the direction, the release means protruding from a lever front portion of the operation lever, and a front end portion connected to the release button, and A rod whose end portion is disposed close to the lock member and which applies a pressing force in the unlocking direction to the lock member by performing a predetermined releasing operation including a pressing operation of a release button. The parking brake device according to claim 1, wherein: