JP2001120005A - Joint structure of side open tine and holding pin in aeration machine for improving soil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint structure of a side open tine and a holding pin in an aeration machine for improving the soil, capable of facilitating the exchange of the side open tine and enabling the exchanging operation to be carried out at a short time. SOLUTION: A protrusion 5C protruding into a through hole 2E formed in the holding pin 2, and urged downward is installed in the holding pin 2 in the joint structure of the side open tine and the holding pin, having an inserting shaft part 2C of the holding pin 2 attached to the tine holder 4 of the aeration machine, and inserted into the upper part of the body 1 of the side open tine, and a joining pin 3 penetrating the inserting part from the side part of the body 1 of the side open tine, and detachably joining the body 1 of the open side tine to the holding pin 2. A concave part 3C into which the protrusion 5C falls is formed in the shaft part 3B of the joining pin 3. A guide groove 3D communicating with the outer periphery of the shaft part 3B is formed so as to be directed from the bottom part of the concave part 3C to the circumferential direction of the shaft part 3B. A guide face 3E engaging with the protrusion 5C is formed in the tip direction of the concave part 3C and at the tip of the shaft part 3B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side open tine of an aeration machine for improving soil on a turf surface in a golf course, a park, or the like, which is used for growing turf. The present invention relates to a connection structure for detachably connecting an open tine to a hold pin.

[0002]

2. Description of the Related Art As shown in FIG. 9, a conventional side open tine of a soil improvement aeration machine has a pipe-shaped side open tine body 11 and a side open tine body 11 which is attached to and detached from a tine holder of the machine body. The side open tine body 1 includes a hold pin 12 that can be attached, a connection pin 13 that detachably connects the side open tine body 11 to the hold pin 12, and a spring pin 10 that prevents the connection pin 13 from coming off.
Reference numeral 1 denotes a pin insertion hole 11D through which the connection pin 13 penetrates, and a hold pin 1
2 has an insertion shaft portion 12C to be inserted into the side open tine body 11, a through hole 12E of the connecting pin 13 is formed in a side portion of the insertion shaft portion 12C, and the tip of the insertion shaft portion 12C has an inclined surface 12D. The inclined surface 12D is formed on the same plane as the upper end 11C of the long hole 11B of the side open tine body 11, and the connection pin 13 is provided with a pin hole 13C of the spring pin 10.

The side open tine main body 11 is connected to the hold pin 12 by inserting an insertion shaft portion 12C of the hold pin 12 from above the side open tine main body 11, and the pin insertion hole 1 of the side open tine main body 11 is inserted.
1D, the connecting pin 1 is inserted into the through hole 12E of the hold pin 12.
3, the spring pin 10 is inserted into the pin hole 13C of the connection pin 13 to fix the connection pin 13, and the hold pin 12 and the side open tine body 11 are detachably connected.

[0004]

The side open tines are severely worn, and even small machines must be equipped with ten or more side open tines and replaced with new ones about every half a day or every day. However, if the spring pin is fixed to fix the connection pin after the connection pin is inserted as described above for replacement of the side open tines, it takes a considerable amount of time to attach and detach the spring pin. Further, during operation, the spring pin may be cut by friction caused by jumping up of sand, and the connecting pin may fall off.

[0005] In view of the above, the present invention provides a connection structure between a side open tine and a hold pin of a soil improvement aeration machine, which makes it possible to easily replace a consumable side open tine and to perform the replacement operation safely in a short time. It is intended to provide.

[0006]

In order to solve the above problems, the structure of the present invention is such that an insertion shaft portion of a hold pin attached to a tine holder of an aeration machine is inserted into an upper part of a side open tine body, and a side portion is inserted into the insertion portion. The connection pin is penetrated from the side of the open tine body, and protrudes into the through hole provided in the hold pin on the hold pin in the side open tine of the aeration machine that detachably connects the side open tine body to the hold pin A projection is provided which is urged downward, and a recess is provided in which the projection fits into the shaft of the connecting pin, and a guide extending from the bottom of the recess to the outer peripheral surface of the shaft in the circumferential direction of the shaft. A groove is provided, and a guide surface that engages with the protrusion is formed at a tip of the shaft portion.

Further, a guide groove may be provided from the bottom of the concave portion to the front of the shaft portion, the guide groove communicating with the outer peripheral surface of the shaft portion.

According to the present invention having the above structure, the holding pin of the side open tine body is connected by inserting an insertion shaft portion of the hold pin from an upper portion of the side open tine body, and inserting the side portion of the side open tine body into the insertion portion. By inserting the connecting pin through the through hole of the hold pin and detachably connecting the side open tine body to the hold pin, if the connecting pin is inserted into the through hole so that the concave part is on the upper side, the connecting pin When the guide surface provided at the tip of the hook engages with the protrusion and pushes the connecting pin further, and the protrusion touches the outer peripheral surface of the shaft, the protrusion retracts from the through hole against the urging force. When the position of the concave portion of the connecting pin matches the position of the protrusion, the protrusion is urged downward and protrudes and fits into the concave portion, and the connecting pin is fixed.

When the connecting pin is disengaged, a guide groove is provided from the bottom of the concave portion of the connecting pin to the outer circumferential surface of the shaft portion in the circumferential direction of the shaft portion. When the connecting pin is rotated, the engaging pin is engaged with the guide groove from the concave portion, and when reaching the outer peripheral surface of the shaft portion, the protrusion is retracted against the urging force, so that the connecting pin can be pulled out at this position.

Next, when the guide groove is provided so as to extend from the bottom of the concave portion toward the front of the shaft portion and communicate with the outer peripheral surface of the shaft portion, the connecting pin is inserted into the through hole so that the concave portion is on the upper side. As before, when the connecting pin extends from the slope of the connecting pin to the outer peripheral surface of the shaft, the projection retracts from the through hole against the urging force. Then, when the connecting pin is further pushed in, the projection is engaged with the guide groove on the outer peripheral surface of the shaft portion, gradually protrudes with a biasing force, is fitted into the concave portion, and the connecting pin is fixed.

When the connecting pin is disengaged, when the connecting pin is pulled, the projection engages from the concave portion to the guide groove and gradually retracts. When the connecting pin reaches the outer peripheral surface of the shaft portion, the projection is biased by the urging force. The connecting pin can be pulled out because it is retracted in opposition.

As described above, the connection pin is fixed only by pushing in the connection pin, and the connection pin can be removed only by turning or pulling the connection pin. is there.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial cross-sectional view showing a state in which a side open tine body and a hold pin of the structure of the present invention are connected, FIG.
Is a front view showing a state in which the side open tine is attached to the tine holder, FIG. 4 is a front view in which the side open tine and the tine holder are separated, FIG. 5 is a perspective view of the connecting pin of claim 1, and FIG. FIG. 7 is a sectional view, and FIG.
It is sectional drawing of the connection pin of FIG.

The side open tine body 1 has a circular cutting edge 1A at the tip by thinning the tip of the pipe material, and has a long hole 1B for soil removal on the side. The upper and lower ends 1C of the soil removal slot 1B are inclined. A pin insertion hole 1D of a connecting pin 3 for detachably connecting the hold pin 2 and the side open tine body 1 is formed on the peripheral side surface of the side open tine body 1 at a position above the soil removing slot 1B. . If the pin insertion hole 1D is located above the soil removal slot 1B,
As shown in the drawing, it may be on the side surface side instead of the same surface side as the soil removal slot 1B.

The hold pin 2 is a round bar-shaped member comprising a mounting shaft 2A as a head, an intermediate flange 2B, and a lower insertion shaft 2C. The mounting shaft 2A is screwed to a tine holder 4 of the machine body. And so on. The outer diameter of the insertion shaft portion 2C is a width suitable for the inner diameter of the side open tine main body 1.

The lower end of the insertion shaft portion 2C is formed on an inclined surface 2D. The inclined surface 2D is inserted so as to be positioned at least below the upper end portion 1C of the long hole 1B for soil removal of the side open tine body 1. . Further, a through hole 2E of the connecting pin 3 is formed in a side portion of the insertion shaft portion 2C. When the insertion shaft portion 2C is inserted into the side open tine main body 1, the through hole 2E matches the position of the pin insertion hole 1D of the side open tine main body 1.

A vertical hole 2F is formed from the upper surface of the mounting shaft portion 2A of the hold pin 2 to the vicinity of the through hole 2E. The vertical hole 2F has a thread groove 2G formed in the inner diameter thereof and the vertical hole 2F. A communication hole 2H having a smaller diameter than the vertical hole 2F communicating from the bottom of the vertical hole 2F to the through hole 2E is provided.

A pin 5 is provided downward in the lower portion of the vertical hole 2F, and an adjustment nut 6 for both spring press and screw engagement with the screw groove 2G is provided in the upper portion of the vertical hole 2F. A coil spring 7 that constantly urges the pin 5 downward is interposed between the head 5A. Shaft 5B of pin 5
Is inserted into the communication hole 2H, and the tip thereof protrudes from the communication hole 2H into the through hole 2E as a projection 5C by the urging force of the coil spring 7. The tip of the projection 5C is formed round. Adjustment of the biasing force is performed by rotating the nut 6. As the urging means, another elastic material may be interposed, and for example, crethane rubber may be used.

The connection pin 3 is formed on the head 3A and the shaft 3B, and connects the hold pin 2 inserted into the side open tine main body 1 to the side open tine main body 1. Pin insertion hole 1
D inserts into the through hole 2E of the hold pin 2 and the tip of the shaft 3B protrudes from the other pin insertion hole 1D.

A projection 5 protruding into the through hole 2E when the connecting pin 3 is inserted into the through hole 2E on the shaft 3B of the connecting pin 3.
A concave portion 3C into which the protrusion 5C fits is provided at a corresponding position of C. A guide groove 3D is formed from the bottom of the recess 3C to the outer peripheral surface of the shaft 3B extending in the circumferential direction of the shaft 3B (FIGS. 5 and 6). In the drawings, the guide groove 3D is formed only in one direction, but can be formed in both directions.

Further, the guide groove 3D may be formed so as to extend from the bottom of the concave portion 3C toward the front of the shaft portion 3B and communicate with the outer peripheral surface of the shaft portion 3B (FIG. 7). Also, the insertion of the connecting pin 3 into the through hole 2E at the end of the shaft portion 3B
A front inclined guide surface 3E is formed which engages with the protrusion 5C protruding into E. The through-hole 3F provided on the side surface of the head of the connecting pin 3 is for inserting an operating tool and rotating the connecting pin 3, and can be provided as needed.
Further, as shown in FIG. 8, the connecting pin 3 may be an operation knob 3G in which the tip of the shaft portion 3B is formed on a tapered guide surface 3E and the head is formed to be large so that the head can be rotated by a finger.

[0022]

According to the present invention, the connection between the side open tine body and the hold pin is fixed only by pushing the connection pin from the through hole of the side open tine body into the through hole of the hold pin. Since it is only necessary to rotate or pull the connecting pin, the replacement of the side open tine main body can be performed easily and in a short time with one touch, and this is a useful invention that can improve the efficiency of the replacement work.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a state in which a side open tine body and a hold pin according to the present invention are connected to each other.

FIG. 2 is a partial cross-sectional view showing a state in which a side open tine body and a hold pin according to the present invention are being connected.

FIG. 3 is a front view showing a state where a side open tine according to the present invention is attached to a tine holder.

FIG. 4 is a front view showing a state where a side open tine and a tine holder of the structure of the present invention are separated.

FIG. 5 is a perspective view of the connecting pin having the structure according to the first embodiment of the present invention;

FIG. 6 is an enlarged sectional view of the connecting pin having the structure according to the first embodiment of the present invention;

FIG. 7 is a sectional view of a connecting pin having the structure of the present invention according to claim 2;

FIG. 8 is a cross-sectional view showing another embodiment of the connecting pin having the structure of the present invention.

FIG. 9 is an exploded perspective view of a conventional side open tine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side open tine main body 1A Side open tine cutting edge 1B Side open tine soil removal slot 1C Side open tine soil removal slot end 1D Side open tine pin insertion hole 2 Hold pin 2A Hold pin attachment Shaft 2B Hold pin flange 2C Hold pin insertion shaft 2D Hold pin slope 2E Hold pin through hole 2F Hold pin vertical hole 2G Hold pin vertical hole screw hole 2H Hold pin communication hole 3 Connection Pin 3A Connection pin head 3B Connection pin shaft 3C Connection pin recess 3D Connection pin guide groove 3E Connection pin guide surface 3F Connection pin through hole 3G Connection pin operation knob 4 Tine holder 5 Pin 5A Head 5B Pin shaft 5C Pin protrusion 6 Adjustment nut 7 Coil spring

Claims (2)

[Claims] 1. An insertion shaft portion of a hold pin attached to a tine holder of an aeration machine is inserted into an upper portion of a side open tine body, and a connecting pin penetrates through this insertion portion from a side portion of the side open tine body, and a side open tine is provided. In a side open tine of an aeration machine that detachably connects a tine body to a hold pin, the hold pin is provided with a downwardly urged projection that protrudes into a through hole provided in the hold pin; A concave portion into which the protrusion fits is provided in the shaft portion, a guide groove extending from the bottom of the concave portion to the outer peripheral surface of the shaft portion in the circumferential direction of the shaft portion is provided, and the front end of the shaft portion is engaged with the protrusion. The side open tine and the hold pin of the soil improvement aeration machine are characterized by forming a matching guide surface. Connection structure. 2. A side open tine and hold for an aeration machine for soil improvement according to claim 1, wherein a guide groove is provided from the bottom of the recess toward the outer periphery of the shaft portion toward the front of the shaft portion. Pin connection structure.