JPS61218460A - Operating lever device for parking brake - Google Patents

Abstract

PURPOSE:To make accurate coupling and separation between an operating lever and a lock lever with engagement and disengagement between the set part installed in one end of a push rod and an engaging step part of the lock lever, by making the operating lever and the lock lever coupled with a brake cable into a separate member each. CONSTITUTION:In an illustrated state making a parking brake a nonoperation, when this parking brake is operated, an operating level 3 is pulled up. Id so, a lift pin 18 pushes a lock lever 2 upward, making it rotate as one body, and a brake cable 9 is pulled up whereby the brake operates, and a lock claw 14 is engaged with a ratchet tooth 7 whereby its turning state is kept up. When the operating lever 3 alone is made to go down from this state, a slider 25 is pushed forward, while such operation as pressing the operating lever 3 downward is carried out, and a set member 22 is separated from an engaging step part 12, making it come into a state of being stuck on a guide part 11. With this constitution, the lock lever 2 and the operating lever are separated from each other, thus the operating lever 3 alone is made rotable.

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD This invention relates to a parking brake for an automobile, and more particularly to an improvement in an operating lever device that is normally provided on the side of the driver's seat. Conventional parking brake operating lever devices generally consist of a ratchet plate attached to the vehicle body and a sweeping lever that is pivoted on the ratchet plate and connected to a brake cable. When you pull the hardware upwards, the brake cable is pulled, and the lock pawl engages with the ratchet teeth on the ratchet plate to maintain the brake operating state.If you press the push button at the end of the operating lever, the internal push The rod is good
Suppresses the lock claw in the disengagement direction

The brake is released by pressing [-. However, in such a control lever device, the imitation lever is in a largely erect state when the brake is applied, so there is a problem in that it becomes a huge hindrance when a person moves in or out of the vehicle interior. Therefore, the operating lever with the handle and the lever part to which the brake cable is connected are made into separate parts, and once the operating lever is pulled up to operate the brake, only the lever part is left and the operating lever itself is removed. The ViI-operated lever device, which can be bent downward, was published in 1976-51.
No. 619 and Japanese Utility Model Application Publication No. 52-144530. Problems to be Solved by the Invention However, in the conventional operating lever device with an upper platform, the operating lever having a handle portion and the brake cable are connected to each other.
Since the state of connection with the Jfl lever member is held simply by spring force, the connection/separation between the two is not clear, and for example, if the operating lever is pushed down without pressing the push button sufficiently. , the control lever is bent before the brake is released, resulting in poor operability and reliability. Also, since there is no special operation required when separating the two, there is a case where the driver's body touches the driver and they are involuntarily separated, causing the driver to release the brakes. There is a risk that they may misunderstand that there is one and take off as is. Means to solve the problem Is this invention a problem with the above-mentioned problem? In order to solve this problem, the set member provided at one end of the push rod and the engagement stepped portion of the lock lever are engaged and disengaged to perform clear coupling and separation. That is, a ratchet plate is fixed to the vehicle body and has ratchet teeth formed on one side, and the ratchet plate is rotatably supported by the ratchet plate.
And a brake cable is connected to the lower end,
A lock lever is provided with an arcuate guide portion and an engagement stepped portion connected to the upper end of the guide portion on its front edge, and is pivotally supported by the lock lever and has a pressed portion at one end and a pressed portion at the other end. a lock pawl that engages with the ratchet teeth; a lock pawl that is rotatably supported on the ratchet plate coaxially with the lock lever; and a handle portion at the tip;
When the lock lever is connected to the lock lever, the lock lever
an operating lever provided with a linking portion for following the brake in the direction of brake activation; an operating lever that is inserted into the operating lever and has a push button at its tip; and a proximal end that connects the lock lever and the operating lever; a push rod that faces the pressed portion of the lock pawl; a return spring that biases the push rod in the direction of protrusion of the push button; and a return spring that is slidably attached to the operating lever and that engages the lock lever. By engaging with the connecting step, the lock lever and the operating lever are kept in a connected state, and when they are not connected, a set member that comes into contact with the guide portion of the lock lever and a set member that is in contact with the above-mentioned engagement lever are engaged. The set member includes an engagement holding spring that urges in the direction of engagement with the joint part, and an operation part provided for slidingly operating the set member against the urging force of the engagement holding spring. It is composed of Operation When the set member is engaged with the engagement stepped portion of the lock lever, the lock lever and the operating lever will be in a connected state.If the operating lever is pulled upward in this state, the lock lever and the operating lever will be engaged through the linking portion. The lock lever rotates into one body, the brake is activated, and the brake state is maintained by the engagement of the lock pawl and ratchet teeth. Even if an external force is applied to the operating lever, the lock lever is not connected to the lock lever. The state is maintained by the engagement of the set member, and only the operating lever does not rotate. When the driver consciously operates the operating portion with his or her fingers or the like and slides the set member, the engagement with the engagement step portion is released and only the operating lever can be bent downward. In this bent and separated state, the set member abuts against the guide portion of the lock lever. 10,000 To release the brake, pull the operating lever up to the 1st position and it will slide along the guide part.
Where is the U material? Since it engages with the engagement stepped portion at this position, it is firmly connected to the lock lever again. In this connected state, when the push button is pressed, the push rod presses the lock pawl and the locked state is released. □ Embodiment FIGS. 11 to 3 show one embodiment of the operating lever device according to the present invention. In Figure 9 showing an example, 1 is a ratchet plate, 2 is a lock lever 53 is an operating lever, 4 is a push rod, and the upper ratchet plate 1 has legs 1a and lb attached to the vehicle body floor panel 5. It is fixed, has a rotation shaft 6 in the center, and has ratchet teeth 7 in an arc shape around the rotation shaft 6 at the front edge.
is formed. The lock lever 2 is connected to a pair of 11411 wall plates 2a sandwiching both sides of the ratchet plate 1.
are joined via a connecting member 2b (see FIG. 2) having a substantially U-shaped cross section, and is rotatably supported by the ratchet plate 1 by the rotating shaft 6, and
It has an abbreviated cutout 8 which is open at the bottom at the front of the lower edge, and a brake cable 9 is connected to the rear of the lower edge via a cable attachment pin 10. Further, a guide portion 11 having an arc shape centered on the rotating shaft 6 is formed on the front edge portion of the connecting member 2b, and an engagement step portion concave inwardly continues to the upper end of the guide portion 11. 1
2 is formed, and a push rod insertion hole 13 is opened slightly downwardly from the engagement step portion 12. Furthermore, the front edge of the lock lever 2 and the front edge of the ratchet plate 1 are In the receiving amount, there is a dogleg shaped i7 lock claw 1.
4 are stored. This lock pawl 14 is pivotally supported by a lock pawl rotating shaft 15, and the pawl g1.4a at one end is constantly engaged with the ratchet teeth 7 under the biasing force of a torsion coil spring 16, and the pressed portion at the other end of 3 1,4b is written inside the push rod insertion hole ]3. The operating lever 3 is formed by press-molding a metal plate into a shape having a cylindrical portion 3a at the tip, a back portion 3b, and a pair of leg portions 3c, and a synthetic resin handle portion 17 is attached to the cylindrical portion 3a. As shown in the above-mentioned leg 3c75Km2 figure, the lock lever 2' (il-1) is inserted into the lock lever 2' and is rotatably supported by the ratchet plate 1 via the rotating shaft 6 like the lock lever 2. A pull-up pin 18 is fixed to the front lower edge of the leg portion 3C as a linking portion with the lock lever 2, and when the lock lever 2 and the eight-operation lever 3 are connected as shown in FIG. The push rod 4, which comes into contact with the notch 8 of -2, is inserted along the longitudinal direction of the operating lever 3, and has a synthetic resin push button 1-9 at its tip.
is fixed, and the brake release suppressing portion 4a at the base end faces the pressed portion 14b of the lock pawl 14 with the push rod insertion hole 13 of the lock lever 2 narrowed. As shown in FIG. 2, the push rod 4 is biased in the direction in which the push button 9 protrudes by a return spring 21 compressed and disposed between it and a spring stopper piece 20. Reference numeral 22 denotes a set member made of synthetic resin that maintains the connected state of the lock lever 2 and the operating lever 3, and as shown in FIG. and a spring guide rod 23 is fixed. This set member 22 is attached to the leg portion 3 of the operating lever 3.
It is slidably fitted into a guide groove 24 drilled in C, and is fixed to a synthetic resin slider 25 serving as an operating section by fitting the flange section 22& and screws 26, and Together with the slider 25, it is constantly biased toward the lock lever 2 by an engagement-holding spring 28 that is compressed and disposed between the spring stopper piece 27 (see FIG. 2). The slider 25 has a U-shaped cross section and is slidably fitted to the back portion 3b of the operating lever 3.Next, the entire operating procedure of the operating lever device constructed as described above will be explained. First of all, the state shown in Figure 1! As mentioned above, the IA is in a state where the lock lever 2 and the operating lever 3 are connected and the brake is not activated. To operate the brake, simply pull up the operating lever 3. good. That is, when the operating lever 3 is pulled up, the pull-up pin 1
8 pushes up the lock lever 2 and makes it follow integrally, so the brake cable 9 is pulled and the brake is activated.
In addition, when the lock pawl 14 is engaged with the ratchet teeth 7 and its rotational state is maintained, even if the operating lever 3 is pressed from above, the set member 22 will not move into the engagement step 1.
2, the sweeping lever 3 is prevented from rotating by itself. However, when pulling up the operating lever 3, the push button 19 may be pressed and pulled up. If you do this, push the lock M14”r with the push rod 4,
The coil spring 16 is staked and the locking gap 14 is rotated to separate the claw portion 14a from the ratchet tooth 7, and the locking claw 14 is rotated.
There is no sound when the ratchet teeth 7 hit. In this case, if the push button 19 is released when the lifting is completed, the lock pawl 14 is engaged with the ratchet teeth 7 and held. In addition, the diagram indicated by the two-dot chain line in FIG.
t, shown. In order to lower only the operating lever 3 from this state, the slider 25 is pushed forward and the operating lever 3 is pushed down a tenth of an inch. As a result, the set member 22
The lock lever 2 separates from the engagement step 12 and rides on the guide Wll, so the lock lever 2 and the operating lever 3 are separated, leaving only the lock lever 2 and the operating lever 3 rotating downward. As such, manual operation is required to separate and rotate only the control lever 3, so there is no risk of it turning inadvertently. In this state, the slider 25 is in the forward position, so it can be easily distinguished from the case where it is rotated while connected to the lock lever 2, and the driver's misunderstanding can be prevented. Next, to release the brake from this state, first pull up the operating lever 3, check that both levers 2.3 are connected, and then press the push button 19f. That is,
When the operating lever 3 is pulled up, the set member 22 gradually slides on the guide portion 11, and when it reaches the engagement step 12, it is automatically moved to the engagement step by the biasing force of the engagement holding spring 28. When the push button 19 is pressed in the state where it is engaged with the lock pawl 1.2, the brake release pressing portion 4a of the push rod 4 presses the lock pawl 1.4 and releases the engagement with the ratchet teeth 7. As a result, the operating lever 3 and the lock lever 2 can be rotated downward while remaining in the coupled state, and the brake is released. As described above, the brake can be activated and released in exactly the same way as when using a normal integrated control lever.
In addition, the effect of the invention is that positive operation is required only when separating the operation lever 3 from the lock lever 2.As is clear from the above explanation, according to the operation lever device of the parking brake according to the present invention, the crew member Since the lock lever is separated from the lock lever only after a conscious operation, there is no risk of erroneous operation or misperception that the brake is released. In addition, the separation and connection of both levers becomes clear 1, and it can be easily confirmed that both levers are connected by the feeling when the set member engages with the engagement step. The can be used in exactly the same way as a normal integrated control lever, and the operation will not be complicated or uncomfortable.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line 1--2, and FIG. 3 is an exploded view of this embodiment. 1...Ratchet plate, 2...Lock lever-1
3... Operating lever, 4... Push rod, 7...
・Ratchet tooth, 9... Brake cable, 11...
- Guide part, 12... Engagement stepped part, 14... Lock claw, 14 b... Pressed part, 17... Handle part, 18...
...Pull-up bottle, 19...Push button, 2191.
Return spring, 22... Set member, 24...
- Guide groove, 25...Slider, 28... Spring for engagement and retention. Ward method f'= ,/゛

Claims (1)

[Claims] (1) A ratchet plate fixed to the vehicle body and having ratchet teeth formed on one side, rotatably supported by the ratchet plate, a brake cable connected to the lower end, and a front edge A lock lever is provided with an arcuate guide portion and an engaging stepped portion connected to the upper end of the guide portion; the lock lever is pivotally supported by the lock lever and has a pressed portion at one end, and the other end is the ratchet. A lock pawl that engages with the teeth, is rotatably supported on the ratchet plate coaxially with the lock lever, and has a handle portion at the tip, and when coupled to the lock lever, brakes the lock lever. an operating lever provided with a linking portion for following the direction; the operating lever is inserted into the operating lever and has a push button at its distal end; a push rod facing the pressed portion of the pawl; a return spring that biases the push rod in the direction in which the push button protrudes;
It is slidably attached to the operating lever and maintains the coupled state of the lock lever and the operating lever by engaging with the engagement stepped portion of the lock lever, and when the two are not coupled, the locking a set member that comes into contact with the guide portion of the lever; an engagement holding spring that urges the set member in the direction of engagement with the engagement stepped portion; A parking brake operating lever device comprising an operating section provided for slidingly operating a set member.