JPH08247111A - Engaging device for pin - Google Patents

Abstract

PURPOSE: To automatically and easily operate a pin both to the inserting side and to the withdrawing side by providing a plurality of mutually moving members with respective pin holes, and providing an engaging spring for energizing the pin toward the inserting side and a releasing spring for energizing it toward the withdrawing side. CONSTITUTION: In the case where a pin 20 is inserted into the hole 5 of a moving-side member 4, an operation lever 32 is turned for setting the pin in the pin-inserting position so that it is engaged with inserting-side grooves 14a and 14b, then a releasing spring 33 becomes its free length and the pin 20 is energized downward by an engaging spring 23. When the moving-side member 4 is moved for fitting the pin 20 to the hole 5, the pin 20 is inserted into the hole 5 by the engaging spring 23, and a fixing-side member 1 is engaged with the moving-side member 4. In the case where the pin 20 is withdrawn, the operation lever 32 is lifted up and turned for setting the pin in the pin-withdrawing position so that it is engaged with withdrawing-side grooves 13a and 13b. When the moving-side member 4 is slightly moved, frictional resistance is reduced, and the pin 20 is drawn out of the hole 5 by the releasing spring 33 surpassing the engaging spring 23, and the engagement of the fixing-side member 1 and the moving-side member 4 is released. Thus, the inserting and withdrawing operation of the pin can be easily and automatically carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin for providing a pin hole in each of a plurality of mutually moving members, inserting the pin into the pin hole to engage the member, and removing the pin to release the engagement. Related to the compounding device.

[0002]

2. Description of the Related Art A pin engaging device is disclosed in an open 62-1.
1888 has been proposed. FIG. 11 shows a conventional pin engagement device, in which (a) is a plan view and (b) is a side sectional view.

The fixed side member 40 has a boss 4 having a hole 41.
2 is fixed. A plate 46 having a pin hole 44 and an inclined surface 45 is fixed to the moving member 43.
The moving side member 43 moves in the arrow direction. Fixed side boss 4
A tubular guide 50 having a pin guide hole 51 at one end is fitted into the second hole 41, and is fastened with a bolt 56. The other end of the guide 50 is provided with an insertion side groove 52 and a pin removal side groove 53 which are offset from each other by about 90 °. The insertion side groove 52 is deeper than the extraction side groove 53. Inside the guide 50,
A flange 54 having a hole 55 is provided in the middle portion,
The upper part of the pin 60 is a thin stem 61 and has a stepped portion 62. The pin 60 is inserted into the guide hole 51 of the guide 50, and the stem 61 penetrates the hole 55 of the flange 54. An operation lever 63 is attached to the upper end of the stem 61, and a stop pin 64 is fixed to the middle portion so that it engages with the insertion side groove 52 and the withdrawal side groove 53. A spring 65 is mounted between the stepped portion 62 of the pin 60 and the flange 54, and biases the pin 60 toward the moving member 43.

FIG. 11 shows a state in which the pin 60 is removed. That is, the operation lever 63 is pulled up to engage the stop pin 64 with the removal side groove 53 of the guide 50. At this time,
The spring 65 is compressed and the pin 60 is removed from the moving side member 43.

When inserting the pin 60, FIG.
As shown in (a) and (b), the operation lever 63 is rotated 90 ° to engage the stop pin 64 with the insertion side groove 52 of the guide 50. Although the pin 60 is pushed downward by the spring 65, it does not fit into the pin hole 44 of the moving side member 43 in FIG. 12B and is in contact with the inclination 45 of the plate 46.

When the moving member 43 moves in the direction of the arrow as shown in FIG. 12 and the position of the pin hole 44 matches the position of the pin 60, the pin 60 is moved by the force of the spring 65 as shown in FIG. The movable side member 43 is fixed to the fixed side member 40. That is, even if the positions of the pin 60 and the pin hole 44 do not match, if the stop pin 64 is set at the position of the insertion side groove 52, the moving side member 4
When 3 moves and the position of the pin 60 matches the position of the pin hole 44, the pin 60 is automatically inserted into the pin hole 44 by the force of the spring 65.

[0007]

However, in the conventional configuration, only the insertion side is automated and the removal side is manual, so that when the pin is loaded, it cannot be removed properly and the pin is hit. , You have to pry. Alternatively, in order to remove the load applied to the pin, it has been troublesome to move the pin and the hole by an amount corresponding to the backlash and align the position before removing the pin.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a pin engagement device that can be easily and automatically operated on both the insertion side and the removal side.

[0009]

In order to achieve the above object, in the pin engaging device of the present invention, a pin hole is provided in each of a plurality of mutually moving members, and the pin is inserted into the pin hole. In the pin engagement device that engages the member and disengages the pin from the pin hole, an engaging spring that urges the pin toward the insertion side and a release that urges the pin toward the removal side And a spring.

In the pin engaging device, a cylindrical pin guide provided on one of the mutually moving members, into which the pin is slidably inserted and an engaging spring is provided, and an axial line of the pin guide. The slide pin is slidably inserted into a tubular guide provided on the inner surface of the tubular member, and the operating lever attached to the tubular member is operated to operate the tubular member. You may comprise by the urging means which urges | biases to the side.

In the above-mentioned pin engaging device, the pin is slidably inserted into one of the members that move with each other, the pin is slidably inserted, and the pin spring is slidable, and the pin stem is slidable. Externally fitted to the pin, one end of which abuts on the other end of the engaging spring that abuts on the pin, and one end of which is supported on the stem of the pin and abuts on the other end of the release spring externally fitted on the stem. A punching member that is fixed to the tubular member and the one member that moves in a concentric manner with the pin guide, that is slidably mounted inside the tubular member, and that regulates the removal side position of the tubular member. It may be configured by a guide in which the side engaging portion and the insertion side engaging portion that regulates the insertion side position are installed.

In the pin engaging device, an operating lever installed so as to be rotatable in the radial direction of the tubular member, and the operating lever is movable between the pull-out side engaging portion and the inserting side engaging portion. As described above, it may be configured with an S-shaped groove installed in the guide.

In the pin engagement device, the engagement spring and the release spring may be formed to have the same size.

[0014]

With the above-mentioned structure, it is possible to urge the pin toward the insertion side or the extraction side with a spring in advance at any time by operating the operation lever. Both work can be performed automatically. Also, if the engagement spring and the release spring are formed to have the same size, the spring force for urging the pin toward the insertion side or the extraction side becomes the same, which facilitates the operation and reduces the cost by sharing the spring. Can be achieved.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a pin engaging device according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 (a) is a plan view of a first embodiment of a pin engaging device according to the present invention, and FIG. 1 (b) is a side sectional view. A pin guide 2 having a pin hole 3 is welded to one fixed side member 1 of the mutually moving members. The movable member 4 is provided with a hole 5. On the side opposite to the pin guide 2 of the fixed-side member 1, a tubular guide 1 welded to a seat plate 11 is provided.
0 is fastened by bolts 15. The seat plate 11 is provided with a stem hole 12. FIG. 2 is a perspective view of the guide 10, in which the extraction side grooves 13a, 1
3b and the insertion side grooves 14a, 14b are provided at a relative angle of about 90 °.

In FIG. 1, the pin 20 has a stem 21, and a stepped portion 22 is provided at the boundary portion thereof. The pin 20 is slidably inserted into the pin guide 2, and the stem 21
Penetrates the stem hole 12 of the seat plate 11. Step portion 22
An engagement spring 23 is mounted between the seat plate 11 and the seat plate 11.
A tubular member 30 having a bottom plate 31 is slidably inserted into the guide 10, and the stem 21 penetrates the bottom plate 31.
An operation lever 32 is fixed to the tubular member 30 so as to engage with the above-mentioned extraction side grooves 13a, 13b and insertion side grooves 14a, 14b. A washer 2 is attached to the tip of the stem 21.
4 is fastened by bolts 25, and a release spring 33 is mounted between the bottom plate 31 of the tubular member 30 and the washer 24. The release spring 33 is set to have a larger set load and a larger spring constant than the engagement spring 23.

Next, the operation will be described. FIG. 1 shows a state in which the pin 20 is pulled out to disengage the fixed side member 1 and the movable side member 4 from each other. That is, the operation lever 32 is pulled up and engaged with the removal side groove 13 of the guide 10. The pin 20 is pulled up by the force of the release spring 33, overcoming the force of the engagement spring 23.

FIG. 3 is a view showing a state where the insertion position of the pin 20 is set. That is, when inserting the pin 20, as shown in FIGS. 3A and 3B, the operation lever 32 is rotated by about 90 ° to be engaged with the insertion side grooves 14a, 14b and set at the pin insertion position. . At this time, the release spring 33 becomes a free length and the load is lost.
Is urged downwards. In FIG. 3B, the hole 5 of the movable member 4 is displaced, so that the pin 20 is not inserted.

FIG. 4 is a view showing the engaged state of the pin 20. That is, when the movable member 4 moves in the direction of the arrow in FIG. 3B and the positions of the hole 5 and the pin 20 match, the pin 20 is moved by the force of the engagement spring 23 as shown in FIG. 4B. 5, the fixed side member 1 and the moving side member 4 are engaged with each other. Similarly, the tubular member 30 is pushed by the engagement spring 23 and descends, and the operation lever 32 reaches the vicinity of the bottom of the insertion side grooves 14a, 14b.

FIG. 5 shows a state in which the pin 20 is set at the pulling position. That is, when pulling out the pin 20, as shown in FIG.
As shown in (a) and (b), the operation lever 32 is pulled up and rotated by 90 ° so as to engage with the extraction side grooves 13a and 13b and set to the pin extraction position. In FIG. 5B, the pin 20 and the hole 5 of the moving-side member 4 are slightly displaced from each other, and the pin 20 cannot be removed due to frictional resistance. Therefore, the release spring 33 is in a compressed state.

When the moving member 4 is slightly moved in the state shown in FIG. 5B, the friction resistance is reduced and the pin 20 is released by the release spring 3.
The force of 3 overcomes the force of the engaging spring 23 to come out of the hole 5 and the state shown in FIG. 1 is reached, and the engagement between the fixed member 1 and the movable member 4 is released.

FIG. 6 (a) is a plan view of a second embodiment of the pin engagement device according to the present invention, and FIG. 6 (b) is a side sectional view. A pin hole 3 is provided in one fixed member 1 of the members that move relative to each other.
The pin guide 2 having is welded. Moving side member 4
A hole 5 is provided in the. On the opposite side of the pin guide 2 of the fixed side member 1, a tubular guide 10a welded to a seat plate 11a having a hole 12a having a diameter substantially equal to the inner diameter of the pin guide 2 is fastened with a bolt 15. FIG. 7 is a perspective view of the guide 10a, and a pair of S-shaped grooves 16a and 16b are provided facing each other on the upper portion of the guide 10a.
Pull-out side engaging portions 13c and d are provided at the upper ends of the grooves 16a and 16b, and insertion side engaging portions 14c and d are provided at the lower ends thereof.

In FIG. 6, the pin 20 has a stem 21, and a stepped portion 22 is provided at its boundary. The pin 20 is slidably inserted into the pin guide 2, and the stem 21
The engaging spring 23a is inserted in the. A tubular member 30 having a bottom plate 31 is slidably inserted into the guide 10a, and the stem 21 penetrates the bottom plate 31. Tubular member 3
The operation lever 32 is fixed to the slot 0, and the groove 16
By moving along a and b, the pull-out side engaging portion 1
3c, d and the insertion side engaging portions 14c, d can be engaged. A washer 24 has a bolt 25 at the tip of the stem 21.
The release spring 33a is mounted between the bottom plate 31 of the tubular member 30 and the washer 24. The engagement spring 23a and the release spring 33a are formed of a common component having the same size.

Next, the operation will be described. FIG. 6 shows a state in which the pin 20 is pulled out to disengage the fixed side member 1 and the movable side member 4 from each other. That is, the operation lever 32 is pulled up along the grooves 16a, 16b and engaged with the pull-out side engaging portions 13c, 13d of the guide 10a. Pin 20 is release spring 3
It is pulled up by the force of 3a.

FIG. 8 is a diagram showing a state in which the insertion position of the pin 20 is set. That is, when inserting the pin 20, as shown in FIGS. 8A and 8B, the operation lever 32 is pushed down along the grooves 16a and 16b and rotated by about 90 ° to insert side engaging portions 14c and 14c. Engage with d and set at the pin insertion position. When the hole 5 of the moving-side member 4 and the pin 20 are displaced as shown in FIG. 8B, the engagement spring 23a is compressed by the tubular member 30, and the pin 20 is urged downward. It At this time, the release spring 33a has a free length and no load is applied.

FIG. 9 is a view showing the engaged state of the pin 20. That is, when the moving member 4 moves in the direction of the arrow in FIG. 9B and the positions of the hole 5 and the pin 20 match, the pin 20 is moved by the force of the engagement spring 23a as shown in FIG. 9B. 5, the fixed side member 1 and the moving side member 4 are engaged with each other.

FIG. 10 shows a state in which the pin 20 is set in the pulling position. That is, when pulling out the pin 20, as shown in FIG.
0 (a) and (b), the operation lever 32 is set in the groove 1
6a and 6b are pulled up and rotated by about 90 ° to be engaged with the withdrawal side engaging portions 13c and 13d and set at the pin withdrawal position. In FIG. 10B, the pin 20 and the hole 5 of the moving-side member 4 are slightly displaced from each other, and the pin 20 cannot be removed due to frictional resistance. Therefore, the release spring 33a
Is in a compressed state. When the moving member 4 is slightly moved in the state shown in FIG. 10B, the frictional resistance is reduced and the pin 20 is pulled out of the hole 5 by the force of the release spring 33a.
Then, the fixed side member 1 and the moving side member 4 are disengaged. Since the engagement spring 23a and the release spring 33a are common, the operating force at the time of inserting and setting can be made the same.

In both the above-described first and second embodiments, even when the pin and the pin hole are not in conformity with each other, the pin is preliminarily set so that the urging force of the spring is applied to the insertion side or the extraction side. By setting it, both engagement and disengagement can be automatically performed.

The pin engaging device of the present invention can be applied to any member as long as the members move with each other. For example, the fixing member 1 is a top boom of a crane having a rectangular cross section,
It is optimal to adapt the movable member 4 to a jib or the like that is telescopically inserted into the top boom.

[0031]

Since the present invention is configured as described above,
By setting the setting position of the operation lever to the pin insertion position or the pin removal position in advance, the pin insertion and removal work can be performed easily and automatically. Further, if the engaging spring and the release spring are formed to have the same size, the spring force for urging the pin toward the insertion side or the extraction side becomes the same, so that the operability is improved, and the spring is commonly used. Can provide a highly productive pin engaging device.

[Brief description of drawings]

FIG. 1 is a plan view and a side sectional view showing a disengaged state of a first embodiment of a pin engagement device according to the present invention.

FIG. 2 is a perspective view of the guide of the first embodiment of the pin engagement device according to the present invention.

FIG. 3 is a view showing a pin insertion position set state of the first embodiment of the pin engagement device according to the present invention.

FIG. 4 is a view showing an engaged state of the pin engaging device according to the first embodiment of the present invention.

FIG. 5 is a drawing showing a pin pull-out position set state of the first embodiment in the pin engagement device according to the present invention.

6A and 6B are a plan view and a side sectional view showing a disengaged state of the second embodiment of the pin engagement device according to the present invention.

FIG. 7 is a perspective view of a guide of a second embodiment of the pin engagement device according to the present invention.

FIG. 8 is a view showing a pin insertion position set state of the second embodiment in the pin engagement device according to the present invention.

FIG. 9 is a view showing an engaged state of the second embodiment of the pin engagement device according to the present invention.

FIG. 10 is a view showing a pin pull-out position set state of the second embodiment in the pin engagement device according to the present invention.

11A and 11B are a plan view and a side sectional view showing a disengaged state in a conventional pin engagement device.

FIG. 12 is a view showing a pin insertion position set state in a conventional pin engagement device.

FIG. 13 is a view showing an engaged state in a conventional pin engaging device.

[Explanation of symbols]

 1 Fixed side member 2 Pin guide 4 Moving side member 10, 10a Guide 13a, b Extraction side groove 13c, d Extraction side engaging part 14a, b Insertion side groove 14c, d Insertion side engaging part 16a, b groove 20 pin 21 Stem 23 , 23a Engagement spring 30 Cylindrical member 32 Operation lever 33, 33a Release spring

Claims (5)

[Claims] 1. A pin for providing a pin hole in each of a plurality of mutually moving members, inserting the pin into the pin hole to engage the member, and removing the pin from the pin hole to release the engagement. In the engagement device, an engagement spring that biases the pin toward the insertion side,
A pin engagement device, comprising: a release spring for urging the pin toward the pulling side. 2. A pin engaging device according to claim 1, wherein said one pin member is provided on one of the mutually moving members, the pin is slidably inserted, and an engaging spring is internally provided. By operating a tubular member slidably inserted in a tubular guide provided on the axis of the pin guide and having a release spring therein, and an operating lever attached to the tubular member, An engaging device for a pin, comprising a biasing means for biasing the pin toward the insertion side or the removal side. 3. The engagement device for a pin 20 according to claim 1, wherein the pin guide is fixed to one of the mutually moving members, the pin is slidably inserted, and an engagement spring is installed inside. Releasably slidably fitted onto the stem of the pin, one end of which abuts on the other end of the engaging spring that abuts on the pin, and one end of which is supported by the stem of the pin and fitted on the stem A tubular member that abuts the other end of the spring and one member that moves in a mutually concentric manner with the pin guide are fixed, the tubular member is slidably mounted inside, and the tubular member An engagement device for a pin, comprising: a guide having an extraction-side engagement portion that regulates the extraction-side position and an insertion-side engagement portion that regulates the insertion-side position. 4. The pin engagement device according to claim 3, wherein an operating lever rotatably installed in a radial direction of the tubular member, the operating lever being engaged with the extraction side engagement portion and the insertion side engagement portion. S installed on the guide so that it can move between the joint
A pin engagement device comprising a V-shaped groove. 5. The pin engagement device according to claim 3, wherein the engagement spring and the release spring have the same size.