KR100361814B1 - Apparatus of limited slip differental using a parking brake for automobliles - Google Patents

Abstract

The present invention relates to a differential limiting device for a small vehicle using a parking brake that allows the differential limiting operation of the wheels in conjunction with the parking brake, the branch cable (10) respectively connected to both rear wheels of the parking cable bracket 130 ( A parking brake system which is fastened to a nut by a nut, comprising: a button 110 provided to be movable at one end of the parking lever 100; One end is fixed to the button 110, and the other side of the selection rod 120 is provided with a locking pin (121); Located on one side of the parking lever 100, the first bracket 130 having a first guide portion 131 is formed with a first locking groove 132 is inserted into one side of the locking pin 121 and guided; ; Located on the other side of the first bracket 130, the second bracket 140 having a second guide portion 141 is formed with a second locking groove 142 is inserted into one side of the engaging pin 121 is guided It can be operated by the one button operated in conjunction with the parking lever, and the differential limiting device can be operated.When the differential limiting device is released, the differential limiting device can be automatically returned to the parking brake state to prevent malfunctions that may occur due to the driver's carelessness. It is an invention having an effect that can be prevented.

Description

Differential limiting device for small vehicles using parking brakes {Apparatus of limited slip differental using a parking brake for automobliles}

The present invention relates to a differential limiting device for a small vehicle, and more particularly, to a differential limiting device for a small vehicle using a parking brake to enable the differential limiting operation of the wheel in conjunction with the parking brake.

1 is a side view showing an operating state of a general parking brake.

First, a general parking brake will be described with reference to FIG. 1.

When the parking lever 1 is raised upward while the knob 1a is pressed, the parking lever 1 rotates with the parking cable bracket 3 around the hinge axis 2, and the nut is a fastening means. Tension is applied to the cable 5 fixed by (4) to brake both wheels on the rear wheel side.

Next, in order to release the braking of both wheels, if the parking lever 1 is lowered while the knob 1a is pressed, the cable 5 is restored to its original position and the braking of the rear wheels is released.

In a general parking brake device operating as described above, as a conventional technique, a differential limiting device using a parking brake is disclosed by applying a differential limiting device to operate in conjunction with this.

2 to 4 show a differential limiting device using a conventional parking brake, Figure 2 is a side view showing a parking brake applied with a conventional differential limiting device, Figure 3 is a plan view of Figure 1, Figure 4 is a conventional An enlarged sectional view of the main part of the brake limit selection rod.

Referring to the accompanying drawings, a conventional differential limiting apparatus will be described.

2 to 4, in the conventional differential limiting device, branch cables 10 respectively connected to both rear wheels are guided to the parking cable bracket 11 to the parking lever 13 through the nut 12. In the connected parking brake system, the respective branch cables 10a and 10b are directly connected to the respective parking cable brackets 11a and 11b, and the parking cable brackets 11a and 11b and the parking lever ( 13 is connected to the selection rod 14 via the selection rod 14, the selection rod groove (14) on which the bowl 17 supported by the spring 16 from the support 15 of the parking lever 13 is seated ( 18a, 18b, and 18c are formed.

In addition, the selection rod 14 has the selection rod grooves 18a and 18b between the button 21 or the elastic rubber button 22 supported by the spring 20 correspondingly installed on both sides of the parking lever cover 19. , 18c) are spaced apart by an interval.

The grooves of the selection rod 14 into which the steel bowl 17 supported by the support lever 15 of the parking lever 13 is inserted and placed are formed of neutral grooves 18b and left and right grooves 18a and 18c. Inward inclination angles of the left and right grooves 18a and 18c toward the neutral groove 18b are formed to be gentler than the outward inclination angle.

Referring to the operation of the conventional differential limiting device configured as described above are as follows.

The cable connected to the wheel is fixed to the parking lever 13 in the form of branch cables 10a and 10b, and the parking lever 13 and two parking cable brackets 11a branched to the left and right sides of the parking lever 13 11b) are separated from each other, and the parking lever 13 and the two parking cable brackets 11a and 11b simultaneously hinge only when the selection rod 14 is located in the neutral groove 18b of the parking lever 13. The shaft 23 is pivoted together to a point. When the selection rod 14 is located in the left groove 18a or the right groove 18c, the parking lever 13 and the left parking cable bracket 11a or the right side are rotated. The parking cable bracket 11b is selected and rotated together.

In addition, the selection rod 14, the left and right and the neutral position is determined by the button 21 or the rubber button 22 installed on both sides of the parking lever 13, as an example the button 21 in FIG. When the button is pressed in the direction of arrow A, the button 21 moves the selection rod 14 in the direction of arrow A so that the bowl 17 in the figure is mounted in the right groove 18c, and thus the parking lever Only 13 and the left parking cable bracket 11b rotate, and the right parking cable bracket 11a does not rotate.

On the contrary, when the rubber button 22 is pressed in the direction opposite to the arrow A, the selection rod 14 is moved to the right in the drawing so that the desired selection rod groove can be freely selected.

As an example, when the left wheel of the rear wheel is idle in the lane, driving is impossible, first, when the button 21 is pushed in the direction of the arrow A in FIG. 3, the selection rod 14 moves to the left, and the bowl 17 of the support 15 is moved. The parking lever 13 and the left parking cable bracket 11b are selected as the right groove 18c is inserted into the right groove 18c.

Next, when the parking lever 13 is lifted in this state, the branch cable 10b on the left side is braked on the left wheel while the branch cable 10a on the right side remains intact. Therefore, as the differential limit is generated in which the driving force is transmitted only to the right wheel, the vehicle can be easily exited from the bad road.

However, the differential limiting device using the conventional parking brake configured and operated as described above has to be operated by pulling the parking lever upwards after selecting the parking bracket by pressing the selection rod with a button or a rubber button. If the driver uses the parking brake without accidentally adjusting the parking lever during operation, only one of the wheels may be braked, causing an accident.

The present invention is to solve the above drawbacks, an object of the present invention is to provide a differential limiting device that can provide the convenience of operation in conjunction with the parking lever.

1 is a side view showing an operating state of a general parking brake,

Figure 2 is a side view showing a parking brake applied with a conventional differential limiting device,

3 is a plan view of FIG.

4 is an enlarged cross-sectional view of a main portion of a conventional differential limit selection rod;

5 shows a parking brake to which the differential limiting device according to the present invention is applied.

Side View,

Figure 6 is an enlarged cross-sectional view of the main part of the parking lever button of the present invention,

7A and 7B illustrate the first and second brackets of the differential limiting device according to the present invention.

Showing drawings,

8 is a perspective view showing a locking pin of the selection rod of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: parking lever 110: button

120: selection rod 121: locking pin

130: first bracket 131: first guide portion

132: first locking groove 140: the second bracket

141: second guide portion 142: second locking groove

In the differential limiting device for a small vehicle using the parking brake of the present invention, the branch cables respectively connected to the rear wheels are fastened to the parking cable bracket with a nut, and the button is provided to selectively operate the brake wheel in conjunction with the parking cable bracket. Is achieved with an integrated parking lever.

5 to 8 is a view showing a parking brake applied with a differential limiting device of the present invention, Figure 5 is a side view showing a parking brake applied with a differential limiting device according to the present invention, Figure 6 is a parking lever button of the present invention 7A and 7B are views showing first and second brackets of the differential limiting device according to the present invention, and FIG. 8 is a perspective view showing a locking pin of the selection rod of the present invention.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 5, the parking brake to which the differential limiting device of the present invention is applied is a parking brake system in which branch cables 10 connected to both rear wheels are fastened with nuts to the parking cable brackets 130 and 140, respectively. In the parking lever 100, one side of the button 110 is provided to be flowable; One end is fixed to the button 110, and the other side of the selection rod 120 is provided with a locking pin (121); Located on one side of the parking lever 100, the first bracket 130 having a first guide portion 131 is formed with a first locking groove 132 is inserted into one side of the locking pin 121 and guided; ; Located on the other side of the first bracket 130, the second bracket 140 having a second guide portion 141 is formed with a second locking groove 142 is inserted into one side of the engaging pin 121 is guided Characterized in that consists of.

Referring to FIG. 6, a plurality of selection grooves 111, 112, and 113 are formed in the button 110, and the parking lever 100 is burnt in the selection grooves 111, 112, and 113. A stopper 101 which is sexually touched may be provided, and the selection groove is characterized by a gentle inclined surface along the direction of operation of the button.

As shown in Figure 7a and 7b, the first bracket 130 and the second bracket 140 is installed on both sides of the parking lever 100, the button 110 of the parking lever 100 The first and second guide parts 131 and 131 formed on the first bracket 130 and the second bracket 140 are symmetrically formed at the ends of the selection rod 120 operating in the straight direction. The operation is performed along the two guide part 141. Each of the first guide part 131 and the second guide part 141 has a first locking groove 132 and a second locking groove 142 along circular arcs of different radii around the hinge axis 107. Is formed, the first bracket 130 and / or the second bracket 140 by the operation of the button 110 of the parking lever 110 to operate in conjunction with the parking lever 100.

The selection rod 120 is provided with a ratchet rod 106 so as to be rotated by the spring 105 to rotate the ratchet 105 having an elastic force, and one end of the ratchet 105 is formed at the support 103. It meshes with the gear part.

Referring to the operation of the first bracket 130 and the second bracket 140 according to the operation of the button 110 as an example.

In the state in which the stopper 101 pressed by the spring 102 by the driver's operation is inserted into the first selection groove 113 of the button 110, the locking pin 121 of the selection rod 120 has a first position. Since only the guide part 131 and the second guide part 141 are guided, when raised upward of the parking lever 100, the first bracket 130 and the second bracket 140 are the parking lever 100. Will be rotated as follows.

Next, in the state in which the stopper 101 is inserted into the second selection groove 112 of the button 110, the locking pin 121 of the selection rod 120 is still positioned in the first guide part 131. The locking pin 121 inserted into the second bracket 140 is rotatable along the second locking groove 142. That is, when the parking lever 100 is raised upward, the first bracket 130 rotates like the parking lever 100, but the second bracket 140 does not rotate.

In the state where the stopper 101 is inserted into the third selection groove 111 of the button 110, the locking pin 121 of the selection rod 120 extends with the first guide part 131 and the first locking groove ( 132 may be rotatable, but the locking pin 121 inserted into the second bracket 140 may be positioned in the second guide part 141. That is, when the parking lever 100 is raised upward, the second bracket 140 rotates like the parking lever 100, but the first bracket 130 does not rotate.

Referring to the operation of the differential limiting device of the present invention configured as described above is as follows.

Referring to FIG. 5, in the state where the stopper 101 is inserted into the first selection groove 113 of the button 100, that is, in the neutral state, the locking pin 121 of the selection rod 120 is removed as described above. Since the first and second guide parts 131 and 141 of the first and second brackets 130 and 140 are positioned, when the driver raises the parking lever 100 upward, the first and second brackets ( 130 and 140 rotate together with the parking lever 100 to brake both rear wheels.

Next, the driver selects the second selection groove 112 or the third selection groove 111 of the button 110 to brake only one wheel idling as one wheel idles while driving the parking lane, and then parks the vehicle. When the lever 100 is raised upward, the first bracket 130 or the second bracket 140 is located like the parking lever 100 according to the position of the corresponding selection grooves 112 and 111 of the button 110. Will rotate, and only the wheel will be braked.

When the driver lowers the parking lever 100 to release the braking state, the rod is selected by the ratchet rod 106 provided in the selection rod 120 and the ratchet 105 which is supported by the spring 105 and has elasticity. 120 is moved to the left side on the accompanying drawings, the button 110 is drawn out as the first selection groove 113 is inserted into the stopper 101.

As described above, the differential limiting device for a small vehicle using the parking brake of the present invention can easily operate the differential limiting device with only one button operated in conjunction with the parking lever, and the parking brake is automatically released even when the differential limiting device is released. It is an invention having the effect of preventing the malfunction that may occur due to the carelessness of the driver by returning to the state.

Claims (3)

In the parking brake system, a branch cable connected to each of the rear wheels is fastened to a parking cable bracket with a nut. A button movably provided at one end of the parking lever; One end is fixed to the button, and the other side of the selection rod having a locking pin; A first bracket positioned on one side of the parking lever, the first bracket having a first guide portion having a first locking groove inserted into and guided by one side of the locking pin; Positioning the other side of the first bracket, the differential limiting device for a small vehicle using a parking brake, characterized in that composed of a second bracket having a second guide portion formed with a second locking groove is inserted into one side of the locking pin is guided . The method of claim 1, wherein the button is formed with a plurality of selection grooves, The parking lever is a differential restriction device for a small vehicle using a parking brake, characterized in that the stopper is elastically supported in the selection groove. 3. The differential limiting device for a compact vehicle using the parking brake according to claim 2, wherein the selection groove is a gentle inclined surface along the operation direction of the button.