JPH0534465Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a manual parking brake device that engages and releases the brakes of a vehicle by longitudinally operating a brake handle near the driver's seat in the longitudinal direction.

``Prior Art'' As shown in FIG. 5, a conventional manual parking brake device has a brake lever 2 pivoted near the center of a mounting bracket 1 fixed to the vehicle body.
, a stem 3 connected to the tip of the brake lever 2, a guide tube 4 which is pivotally supported at the rear end of the mounting bracket 1 and guides the stem 3 through it, and a driver seat side end of the stem 3. It consisted of a brake handle 5 provided.

``Problem to be Solved by the Invention'' However, in such a conventional manual parking brake device, the direction in which the brake handle 5 is pulled is guided by the guide tube 4, and the operating force is not wasted, resulting in poor operability. This will be explained with reference to FIG.

In the figure, if the line connecting the connection point 6 of the brake lever 2 and stem 3 and the brake handle 5 is called a brake operation line, then by pulling the brake handle 5 in the direction of this brake operation line, the maximum If an efficient brake operation force is obtained and the brake operation is performed in a direction that makes an angle with this brake operation line, the component force perpendicular to the brake operation line becomes a wasted operation force. Moreover, the relative position between the driver and the brake handle is not always convenient for operation along such a brake operation line, and as shown in the figure, the relationship between the driver and the brake handle is not always convenient for operation along the brake operation line. From the time to the end of the operation (dashed line), the brake operation line changes direction every moment, and even if it is in a good position at the beginning of the operation, it may be in a bad position at the end of the operation.

Further, since the position of the brake handle in the brake release state is fixed, there is a problem in that the brake handle 5 hits the driver's knees and gets in the way.

On the other hand, vehicle manufacturers have been forced to put a lot of effort into the installation layout in order to minimize the above-mentioned problems for drivers.

The present invention was developed by focusing on the problems in the conventional technology.The pulling direction of the brake handle always matches the brake operation line, so there is no wasted operation force, and the brake handle has good operability. The aim is to provide a manual parking brake that does not get in the way and is easy to layout.

``Means for Solving the Problems'' The gist of the present invention for achieving the above purpose is to provide a control cable that is pivotably supported near the front of the mounting bracket near the driver's seat of the vehicle, and that the rear end of the control cable is tied to the rear end of the control cable. a brake lever, a stem whose proximal end is connected to the tip of the brake lever, and a locking concave and convex portion carved on one side; and a stem provided at the near end of the stem, which can be operated longitudinally in the front-rear direction. In the manual parking brake device, the manual parking brake device includes a brake handle mounted on the front side of the mounting bracket, and a guide tube having a locking pawl that inserts the stem and engages with the locking concave portion. The nearer end of the stem is formed into a forked end with guide surfaces facing each other in parallel so that the stem can be inserted therebetween, and each guide surface is provided with a guide groove in the deflection direction of the stem. An uneven part for detent is provided on the edge of the guide groove near the brake lever, and the guide tube is arranged between the guide surfaces of the fork-shaped end, and the guide tube has a cylindrical shape through which the stem is inserted. A guide pin having a main body portion and a pair of flat portions extending from the main body portion and slidingly contacting the guide surface, and a guide pin penetrating the flat portion and inserted into the guide groove of the guide surface; A locking pawl that is fitted into and disengages from the locking concave and convex portion of the stem, and a biasing spring that biases the locking pawl toward the locking concave and convex portion are disposed, and the guide pin is connected to the detent. A manual parking brake device is characterized in that the manual parking brake device is capable of engaging with uneven portions of the parking brake device.

"Operation" The manual parking brake device is arranged so that the brake handle is near the driver's knees.

When you pull the brake handle to apply the parking brake, the stem pulls the brake lever toward you, pulling the rear end of the control cable connected to the brake lever and applying the brake.

During the above operation, the guide pin of the guide tube is freed from the pulling force from the control cable and is therefore able to move along the guide groove drilled in the forked end of the mounting bracket, allowing the brake lever to move. The brake operation line connecting the connection point between the brake handle and the stem is always aligned in the pulling direction of the brake handle, so there is no wastage of brake operation force.

When you pull the brake handle far enough and then let go, the strong braking force transmitted from the control cable pulls the brake lever forward and the stem as well.
Then, the locking pawl provided on the guide tube engages with the locking concave and convex portion of the stem, and the guide tube is strongly pulled forward, so that the guide pin falls into the nearest recess for detending and is locked. .

If you want to change the position of the brake handle while the brake is still on, pull the brake handle strongly toward you, and the guide pin will be unlocked from the detent recess, allowing it to move freely along the guide groove. When the brake handle reaches the desired position, the guide pin engages with the nearest detent recess and continues braking.

To release the brake, twist the brake handle to disengage the locking pawl and the locking groove,
The brake state is released.

If you want to correct the position of the brake handle when the brake is released, pull the brake handle with a slight pulling force corresponding to the initial tension of the control cable, the guide pin will be unlocked, and it will move along the guide groove. Since it can be moved freely, all you have to do is release the brake handle at the desired position. In the released position, the guide pin engages the nearest detent recess.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

1 to 4 show an embodiment of the present invention.

As shown in FIGS. 1 and 2, the manual parking brake device 10 includes a brake lever 15 that is pivoted slightly forward of the center of a mounting bracket 11 that is deeply curved upward, and is attached to hang downward. A stem 20 whose base end is pivotally connected to the lower end of the brake lever 15, and a brake handle 24 fixed to the nearer end of the stem 20.
, a guide tube 25 that guides the stem 20 and is provided with a locking pawl 35, and a brake lever 1.
5 and a control cable 40 whose rear end is fixed between the pivot points of the stem 20 and transmits the braking force.

As shown in each figure, the front end of the mounting bracket 11 is formed into a forked end 12 with guide surfaces 12a facing parallel to each other so that the stem 20 can be inserted therebetween. A guide groove 13 is bored in each guide surface 12a in the swinging direction of the stem 20. An uneven portion 14 for a detent is carved on the edge of the guide groove 13 closer to the brake lever 15. Among the concavo-convex portions 14 for the detent, the concave portions are designated by reference numeral 14a, and the convex portions are designated by reference numeral 14b.

The brake lever 15 has a slightly curved shape toward the front, and is attached to the mounting bracket 11.
is pivotally supported at a pivot point 16, and the stem 20 is pivotally supported at a pivot point 17.

The end of the control cable 40 is tied at a fixing point 18 located slightly upwardly between the pivot points 16 and 17.

The stem 20 consists of a stem connecting member 22 that is pivotally connected to the brake lever 15 at the pivot point 17, and a stem body 21 whose base end is inserted into the stem connecting member 22. , urged into position by spring 23;
It has a well-known mechanism that can rotate within a predetermined angular range.

The stem body 21 is also provided with a large number of locking concave and convex portions 21a for maintaining the brake state on the side surface corresponding to the fixed position.

The brake handle 24 is attached to the stem body 21
It has a well-known shape such as a T-shape or an L-shape, and is suitable for pulling and twisting.

As shown in FIGS. 3 and 4, the guide tube 25 has cylindrical ends at both ends, a semi-cylindrical body section 25a in the middle, and a main body section 25a parallel to the semi-cylindrical section. The flat portion 25b has a width corresponding to the inside of both guide surfaces 12a of the forked end portion 12 of the mounting bracket 11. Further, a guide bush 26 made of an appropriately selected material is inserted into the cylindrical portion so as to fit around the outer periphery of the stem body 21 and guide it smoothly.

A guide pin 30 passes through the flat portion 25b of the guide tube 25, and as shown in FIG. The flange portion 30b and the washer 31 are made larger than the width of the opening in the recessed portion 14a of the guide groove 13.

A locking pawl 35 is rotatably attached to the guide pin 30 and engages with a locking concavo-convex portion 21a carved in the stem body 21, and the stem 20 is pulled forward by a biasing spring 36. When the stem body 21 is pulled forward by the braking force, the stem body 21 always engages with the locking concave and convex portion 21a.
is biased toward the locking concavo-convex portion 21a side.

Next, the effect will be explained.

When the brake handle 24 is pulled in order to apply braking with the manual parking brake device 10, the brake 15 is pulled to the manual side by the stem 20, and the rear end of the control cable 40 connected to the brake handle 15 is pulled. is pulled in and the brakes are applied.

During the above operation, the guide pin 30 of the guide tube 25 is freed from the pulling force from the control cable 40, so in FIG. The brake operation line connecting the pivot point 17 of the brake lever 15 and stem 20 and the brake handle 24 is oriented in the pulling direction of the brake handle 24, as illustrated by the chain line in FIG. The brakes are always in agreement, and there is no wasted brake operation force.

When the brake handle 24 is sufficiently pulled and the operator releases the hand, the brake lever 15 is pulled forward by the strong braking force transmitted from the control cable 40, and the stem 20 is also pulled forward.

The locking pawl 35 attached to the guide pin 30 of the guide tube 25 is attached to a locking concave and convex portion carved on the stem body 21 of the stem 20 by a biasing spring 36, as shown in FIG. 21a, so that it escapes toward the pulling side of the stem body 21 and locks against the opposite front side, so when you release your hand from the brake handle 24, the locking pawl 35 The guide tube 25 is strongly pulled forward by engaging with the locking uneven portion 21a, and the guide pin 30 falls into the nearest detent recess 14a and is locked.

If you want to change the position of the brake handle 24 while the brake is still on, press the brake handle 24.
When the brake handle 24 is strongly pulled toward the user, the brake force applied to the guide pin 30 is released and the brake handle 24 is disengaged from the detent recess 14a, allowing the brake handle 24 to freely move along the guide groove 13. . Therefore, as shown in FIG. 2, when the brake handle 24 is moved to a desired position and released, the guide pin 30 is locked in the nearest detent recess 14a and the braking state is continued.

To release the brake, press the brake handle 2
4, the stem body 21 rotates at a certain angle with respect to the stem connecting member 22, so the locking pawl 35
The engagement between the locking concave and convex portion 21a is released, and the brake state is released. When the brake handle 24 is released, the stem body 21 is rotated back to its original position by the spring 23.

To correct the position of the brake handle 24 with the brake released, pull the brake handle 24 with a slight pulling force corresponding to the initial tension of the control cable 40, and the guide pin 30 will be unlocked and the guide pin 30 will be released. Groove 13
Since the brake handle 24 can be moved freely along the
Just release your hand at the desired position as shown in the figure. At the released position, the guide pin 30 is locked in the nearest detent recess 14a.

"Effect of the invention" According to the manual parking brake device according to the invention, the guide tube that guides the stem can be moved up and down by being sandwiched between the guide surfaces of the fork-shaped end provided at the front end of the mounting bracket. This allows the line connecting the pivot point that connects the brake lever and stem to the brake handle to always line up with the brake operation line, ensuring no wasted brake operation force, improving operability, and preventing the brake handle from getting in the way. Moreover, the layout does not take much time during production.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, where Figure 1 is a perspective view of the manual parking brake device, Figure 2 is a side view, and Figure 3 is an explanatory diagram of the operation near the guide tube. , FIG. 4 is a sectional view taken along the line - in FIG. 3, and FIGS. 5 and 6 show a conventional manual parking brake device.
The figure is a perspective view of the manual parking brake device.
The figure is also a side view. 10...Manual parking brake device, 11...
...Mounting bracket, 12...Forked end, 12a
... Guide surface, 13 ... Guide groove, 14 ... Uneven part for detent, 15 ... Brake lever, 20
... Stem, 21a ... Locking uneven part, 24 ... Brake handle, 25 ... Guide tube, 25
a...Main body portion, 25b...Flat portion, 30...Guide pin, 35...Latching claw, 36...Biasing spring.

Claims (1)

[Scope of Claim for Utility Model Registration] A brake lever that is pivotally supported near the front of a mounting bracket near the driver's seat of a vehicle and has the rear end of a control cable tied to it, and a base end that is connected to the tip of the brake lever. , a stem having a locking concave and convex portion carved on one side thereof, a brake handle provided at the near end of the stem and operated vertically in the front and back direction, and a brake handle attached to the near side of the mounting bracket, A manual parking brake device comprising a guide tube through which a stem is inserted, and a guide tube having a locking pawl that engages with the locking concave and convex portion, the guide tube having a front end of the mounting bracket guided so that the stem is inserted therebetween. A fork-shaped end portion having parallel surfaces facing each other, a guide groove is formed in each guide surface in the swinging direction of the stem, and an uneven portion for detent is provided on the edge of the guide groove closer to the brake lever. Also, the guide tube is disposed between the guide surfaces of the forked end, and the guide tube includes a cylindrical main body through which the stem is inserted, and a pair extending from the main body and in sliding contact with the guide surfaces. a flat part, and a guide pin that penetrates the flat part and is inserted into a guide groove of the guide surface, and a lock that is fitted onto the guide pin and engaged with and disengaged from the locking concave and convex portion of the stem. A manual parking brake characterized in that a pawl and a biasing spring that biases the locking pawl toward the locking concave and convex portion are provided, so that the guide pin can be engaged with the detent concave and convex portion. Device.