JPH0112015Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the operating mechanism of the clutch lever of a winch.

A clutch lever operation mechanism of a conventional winch, for example, an on-vehicle winch, as shown in FIGS.
, a lock pin 2 which is attached in a direction substantially perpendicular to the rocking surface of the clutch lever 1 and is movable back and forth within a certain range in the axial direction;
a spring 3 that biases the lock pin 2 in one direction;
a knob 4 for driving the clutch lever 1; a lock plate 5 disposed substantially parallel to the swinging surface of the clutch lever 1 along the swinging locus of the tip of the lock pin 2;
Two lock holes 6A and 6B are formed in the lock plate 5 at two positions corresponding to the two positions of the lock pin when the clutch (not shown) is on or off, and the lock pin can engage with the two lock holes 6A and 6B. It is what it is.

The lock pin 2 is urged by a spring 3 to protrude in the distal direction, and has a pin 7 at its rear end.
By operating the knob 4 which is integrally connected with the spring 3, it can be retracted against the spring 3.

When such a clutch lever operation mechanism is operated to fix the clutch in the on or off state, the tip of the lock pin 2 is fitted into the lock hole 6A or 6B so as to protrude into the lock hole 6A or 6B, as shown in FIG. When moving, the tip of the lock pin 2 is moved back by pulling the knob 4 as shown in FIG. 3, thereby releasing the engagement between the tip of the lock pin and the lock hole 6A or 6B. In this state, clutch lever 1
oscillate.

This conventional clutch lever operating mechanism is
When moving the clutch lever 1, the knob 4 has to be pulled up by a large amount, making operation cumbersome. Also, when the clutch lever 1 is swung and the tip of the lock pin 2 is engaged with the lock hole 6A or 6B, the lock hole does not close to the clutch lever. Because the lock pin 2 is on the back side of the lock hole and cannot be seen visually, the lock pin 2 often slips from the lock hole and the operation has to be repeated.Furthermore, when the lock pin 2 is moved backward and the clutch lever 1 is moved, the tip of the lock pin 2 becomes locked. There were inconveniences such as contacting the plate 5, damaging the lock plate, and causing rust.

This invention was made to solve the above-mentioned inconvenience, and the clutch lever is easy to operate.
It is an object of the present invention to provide a clutch lever operating mechanism for a winch that can securely fix the clutch lever in the on or off state and prevent damage to the lock plate.

This invention consists of a lock pin that is attached to the rocking part of the clutch lever in a direction substantially perpendicular to the rocking surface of the clutch lever and that can move back and forth within a certain range in the axial direction; a spring for urging, a knob integrally attached to the lock pin and for driving the clutch lever, and a knob disposed substantially parallel to the rocking surface of the clutch lever along the rocking locus of the tip of the lock pin. Clutch lever operation of a winch comprising a lock plate and two lock holes formed in the lock plate at two positions corresponding to the two positions of the lock pin when the clutch is turned on or off and engaged with the lock pin. In the mechanism, a guide groove having a width smaller than the diameter of the lock hole hole is formed in the lock plate according to the movement locus of the lock pin so as to connect the two lock holes, and the width of the guide groove is formed in the lock pin. and a small diameter portion formed at a different position in the axial direction with respect to the large diameter portion and having a diameter that can fit into the guide groove. and the axial position of the large diameter portion is normally at the lock plate position, and when the lock pin is moved against the spring, the axial position of the small diameter portion is at the lock plate position. By doing so, the above objectives are achieved.

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the same or corresponding parts as those of the conventional clutch lever operating mechanism shown in FIGS. 1 to 3 are given the same reference numerals, and the explanation thereof will be omitted.

As shown in FIGS. 4 to 6, this embodiment is attached to the swinging portion 1A of the clutch lever 1 in a direction substantially perpendicular to the swinging surface of the clutch lever 1, and in the axial direction. A lock pin 2 that can move forward and backward within a certain range; a spring 3 that biases the lock pin 2 in one direction; a knob 4 that is integrally attached to the lock pin 2 and that drives the clutch lever 1; A lock plate 5 is disposed along the rocking locus of the tip of the lock pin 2, substantially parallel to the rocking surface of the clutch lever 1, and corresponds to the two positions of the lock pin when the clutch (not shown) is on or off. The lock plate 5-2
2 formed at the location and capable of engaging with the locking pin 2
In the clutch lever operation mechanism having two lock holes 6A and 6B, the lock plate 5 has two lock holes 6A and 6B.
A guide groove 8 having a width smaller than the hole diameter of the lock holes 6A and 6B is formed along the movement locus of the lock pin 2 so as to connect the lock pin 2, and a guide groove 8 having a width larger than the width of the guide groove 8 is formed in the lock pin 2. A large diameter portion 2A that can fit into the lock holes 6A and 6B, and a small diameter portion 2B that is formed at a different position in the axial direction with respect to the large diameter portion 2A and that can fit into the guide groove 8. The lock plate 5 is provided and the axial position of the large diameter portion 2A is in a normal state.
When the lock pin 2 is moved against the spring 3, the axial position of the small diameter portion 2B becomes the position of the lock plate 5.

The lock pin 2 is housed in a lock pin holder 9 attached to the swinging portion 1A of the clutch lever 1 so as to be movable in the axial direction, and is located between the inner tip of the lock pin holder 9 and the rear end of the lock pin 2. The tip is biased to retreat by the spring 3 mounted between the flange 2C and the formed flange 2C.

The large diameter portion 2A is formed at the tip of the lock pin 2, and the small diameter portion 2B is continuously formed at the rear end side of the large diameter portion 2A. When the holder 9 is in contact with the upper end surface 9A and is at the end of its stroke in the backward direction, the large diameter portion 2A is on the same plane as the lock plate 5 and the lock hole 6A or 6 is in contact with the upper end surface 9A of the holder 9.
When in position B, the large diameter portion 2A is fitted into the lock hole 6A or 6B (see FIG. 5).

Furthermore, when the lock pin 2 is pushed beyond a certain level toward the distal end via the knob 4 against the spring 3, the large diameter section 2A at the distal end moves downward (in the figure), and the small diameter section 2B and the lock plate 5 move downward. The positions are made to overlap so that the small diameter portion 2B can move within the guide groove 8.

In this embodiment, the clutch lever 1 is moved by pushing the knob 4, making it easy to operate, and the lock pin 2 is guided by a guide groove 8 to turn the clutch on or off. When the lock pin reaches the lock hole 6A or 6B, the lock pin comes into contact with the lock hole 6A or 6B so that the lock pin can be operated reliably. Furthermore, since the tip of the lock pin 2 does not slide on the surface of the lock plate 5, there is an advantage that the lock plate is not scratched or rusted due to damage to the lock plate.

In the above embodiment, the large diameter portion 2A is formed at the tip of the lock pin 2, and the large diameter portion 2A is formed at the tip of the lock pin 2, and
When rocking the clutch lever 1, the knob 4 is pressed and operated. However, the present invention is not limited to the structure of the embodiment described above. For example, when the clutch lever 1 is moved, the lock pin 2 is By pulling it up, the small diameter portion 2B is located in the guide groove 8 (see Fig. 8), and when engaged with the lock holes 6A and 6B (when the clutch lever is fixed), the small diameter portion 2B is located on the rear end side of the small diameter portion 2B. Certain large diameter sections 2A may be positioned within lock holes 6A and 6B by releasing lock pin 2 and knob 4. (See Figure 7).

In this embodiment, when operating the clutch lever,
A configuration in which the knob 4 is operated by pulling it is advantageous when it is easier to operate.

Since the present invention is constructed as described above, the clutch lever can be easily operated, the clutch lever can be reliably swung and fixed in the on or off state, and it can prevent damage to the lock plate and rust caused by the damage. It has an excellent effect of preventing the occurrence of.

[Brief explanation of the drawing]

Figure 1 is a plan view showing a lock plate in a conventional winch clutch lever operating mechanism;
3 and 3 are cross-sectional views showing the conventional clutch lever operating mechanism, FIG. 4 is a plan view showing a lock plate in an embodiment of the clutch lever operating mechanism according to the present invention, and FIGS. 5 and 6 are the same. 7 and 8 are cross-sectional views showing essential parts of other embodiments of the present invention. 1...clutch lever, 1A...swinging part, 2...
...Lock pin, 2A...Large diameter part, 2B...Small diameter part, 3...Spring, 4...Knob, 5...Lock plate, 6A, 6B...Lock hole, 8...Guide groove.

Claims (1)

[Scope of utility model registration request] A lock pin is attached to the swinging portion of the clutch lever in a direction substantially perpendicular to the swinging surface of the clutch lever and can move back and forth within a certain range in the axial direction, and a spring biases the lock pin in one direction. and,
a knob that is integrally attached to the lock pin and drives the clutch lever; a lock plate that is arranged substantially parallel to the rocking surface of the clutch lever along the rocking locus of the tip of the lock pin; In the winch clutch lever operating mechanism, the winch clutch lever operating mechanism includes two lock holes formed in the lock plate at two positions corresponding to the two positions of the lock pin when the lock pin is on or off, and which can be engaged with the lock pin. To connect the two lock holes to the lock plate,
forming a guide groove having a width smaller than the diameter of the lock hole hole according to the movement locus of the lock pin;
a large diameter portion on the lock pin that is larger in diameter than the width of the guide groove and can be fitted into the lock hole;
a small diameter part formed at a different position in the axial direction from the large diameter part and having a diameter that can fit into the guide groove, and the axial position of the large diameter part is normally the position of the lock plate. A clutch lever operating mechanism for a winch, characterized in that when the lock pin is moved against the spring, the axial position of the small diameter portion becomes the position of the lock plate.