JP4493539B2 - Fence paddle and its manufacturing method - Google Patents

Description

  The present invention provides a tip of the large-diameter casing in a state where the small-diameter casing is pulled out from the large-diameter casing on the outer peripheral surface of the butt end portion of the small-diameter casing that can be retracted and retracted with respect to the large-diameter casing. The present invention relates to a swing rod having a mating portion that is in pressure contact with a side inner peripheral surface and a method for manufacturing the same.

In this type of swing rod, to form the mating portion, conventionally, a bulge portion is formed at the rear end portion of the small-diameter rod body, and the outer peripheral surface of this bulge portion is finished to a smooth surface without unevenness. In the state where the body is pulled out, the bulging portion is configured to be inwardly press-fitted to the inner peripheral surface of the distal end of the large-diameter frame.
In this way, when the outer peripheral surface of the bulging part is in pressure contact with the entire inner peripheral surface of the tip of the large-diameter housing, the amount of backlash at the time of fitting and fixing is reduced. If the sense of operation is good and the tip position of the large-diameter rod is set to the middle position behind the tip of the bulge, The bend line is smoothly connected with continuity without being bent like a node at the fitting portion, and the load distribution is continuous and easy to handle. However, since the bulging portion is configured to contact over the entire surface, when water adheres to the fitting site, the small diameter casing and the large diameter casing may be in a fixed state, In many cases, the fixed state cannot be released and it is difficult to store the small-diameter casing in the large-diameter casing. If dust or sand adheres to the inner peripheral surface of the tip of the large-diameter housing when the small-diameter housing is withdrawn or withdrawn, not only the bulging portion will be damaged, but also the outer peripheral surface on the tip side of the bulging portion. However, since the difference between the bulging part and the outer diameter is small, the outer peripheral surface on the tip side may be damaged.
In order to eliminate such drawbacks, the present applicants have proposed a technique having a matching portion having the following configuration. That is, the mating portion is configured by covering the position where the mating portion is formed with a masking material having a plurality of through holes, and forming a projection by applying a projection-forming paint on the masking material (Patent Document). 1).
By constructing such a mating portion, when the mating portion of the small-diameter housing is fitted to the inner peripheral surface of the large-diameter housing, the bulging portion is not brought into contact with the entire surface by the projection. Therefore, even if water adheres, the escape of water between the protrusions reduces the occurrence of a fixed state between the small-diameter housing and the large-diameter housing. Even if dust or the like adheres, the dust enters between the protrusions, so that the dust is not caught between the bulging portion and the inner peripheral surface, and the bulging portion is hardly damaged. Also, since the projection itself uses paint material, it has some elasticity and it is formed as a projection, so the bulging part of the small-diameter housing fits on the inner peripheral surface of the large-diameter housing. When combined, a slight elastic deformation of the protrusion is expected, so that it is possible to secure the fitting and fixing state even if the tip diameter of the protrusion is not manufactured with high accuracy on the order of microns as in the past. it can. Since the protrusion that contacts the inner peripheral surface of the tip of the large-diameter housing can be formed in a wide range, even if the contact force by this protrusion is small, it is possible to exhibit a stable pressure contact force as a whole.
Further, even when a large load is applied to the heel, the stress is dispersed through the projection, so that the heel bends smoothly with a certain curvature, and is not easily damaged.

Japanese Patent No. 2588351 (paragraph numbers [0003] and [0008] FIGS. 1 and 3)

  The above-mentioned mating part is excellent with such effects, but because it is made by solidifying the protrusions with paint, there are things that cause a decrease in pressure contact force during long-term use, and durability There was a problem in terms of.

  The object of the present invention is to provide a mating portion excellent in durability while maintaining the goodness that the sticking phenomenon that the prior art has can be avoided and the smoothness of bending can be secured. It is in the point that it provides the cradle.

〔Constitution〕
The characteristic configuration of the invention according to claim 1 is a state in which the small-diameter housing is pulled out from the large-diameter housing on the outer peripheral surface of the buttocks end portion of the small-diameter housing that can be moved back and forth with respect to the large-diameter housing. A mating portion is formed in pressure contact with the inner peripheral surface of the heel side of the large-diameter casing, and the mating portion is softer than the projection formed of the projection forming paint and the projection forming paint used for the projection. And a coating body covering the projections, and the operation and effects thereof are as follows.

[Action]
In other words, since the covering covered with the protrusions is made of a softer coating material than the protrusion forming paint that forms the protrusions, it is elastically deformed in a state where it is pressed against the inner peripheral surface of the tip of the opposite large-diameter housing. The force is large, the contact followability is high and the reaction force from the other side can be reduced.
In addition, since the protrusion itself is made of a paint having a hardness higher than that of the covering, it can be made highly reliable with high shape retention, and has enough strength to withstand reaction forces from the mating contact surface. It can be maintained.

〔effect〕
As a result, while maintaining a configuration that suppresses rattling in the fitted state, the formation of the protrusions can prevent the sticking phenomenon due to the adhesion of water, and also can suppress troubles such as scratches caused by the adhesion of dust. Furthermore, because of the synergistic effect of the point to make the protrusion and the point that the protrusion is made of paint material, the fitting state can be made equivalent to the conventional one even if the accuracy is relatively gentle, etc. Becomes easier. Further, even when a large load is applied to the heel, the stress is dispersed through the protrusion, so that the heel bends smoothly with a certain curvature and is difficult to break.
In addition to the basic effects as described above, it is possible to improve the contact followability to the other side surface by covering with a soft paint, and the protruding portion maintains a firm and strong strength with a hard paint. Can be a thing. In this way, soft paint is used for the surface that directly contacts the other side, and the protrusion itself that receives the reaction force from the other side is composed of hard paint. It has become possible to provide an easy-to-use charter.

  A characteristic configuration of the invention according to claim 2 is that a large-diameter bulging portion is formed in a part in the axial direction of the outer peripheral surface of the butt end portion of the small-diameter casing, and the bulging portion and its bulging portion Forming the mating portion over a small-diameter hem portion on the heel side, and forming the protrusion covered with the covering on at least one small-diameter hem portion of the bulging portion and the small-diameter hem portion; The operational effects are as follows.

[Action]
In other words, since the protrusions are substantially different in height from those formed on the hem part and the bulging part, the degree of elastic deformation is larger on the protrusions formed on the hem part. When the body is fitted, first, it comes into contact with the other side surface from the projection of the hem portion, and there is also a good operational feeling that the fitting state becomes tight later.

〔effect〕
As a result, the setting of the fitting fixing force is easy, and the fitting operation feeling is good.

  According to the third aspect of the present invention, in the state in which the small-diameter casing is pulled out from the large-diameter casing on the outer peripheral surface of the butt end portion of the small-diameter casing that can be moved back and forth with respect to the large-diameter casing, A method for manufacturing a housing for a swing rod that forms a mating portion that is in pressure contact with the inner peripheral surface of the heel side of a large-diameter housing, wherein the first masking is formed with a plurality of through holes for forming the mating portion. Covering the position where the mating part is formed with a material, forming a protrusion by applying a paint for forming a protrusion over the first masking material, removing the first masking material, and removing a portion other than the position where the protrusion is formed in the through hole The second masking material is covered with a coating material that is softer than the projection-forming paint, and the effect is as follows.

[Action]
In other words, the first masking member is wound around the mating part of the finished cocoon material, the coating material is sprayed from above, and the coating material adheres to the surface of the mating part through the through-hole when painted using a coating method such as shigoki. And forming protrusions. Then, when the first masking member is removed, the protrusion appears.
Next, a portion other than the projection forming position is covered with a second masking material having no through hole, and a soft coating paint is applied to the projection forming portion as compared with the projection forming coating material. Covers the protrusion.

〔effect〕
As a result, by forming the coating body with paint, it is possible to form the coating body in the painting process in the same way as the protrusions. Can also be utilized.

  The structure of the mating part used for a swinging rod such as a bag will be described. As shown in FIG. 1, a bulging portion 1 </ b> A is formed on the outer peripheral surface of the rear end of the small-diameter housing 1, and the outer diameter of the bulging portion 1 </ b> A is changed to the inner peripheral surface 2 </ b> A of the tip end of the large-diameter housing 2. It is formed so that it can be press-fitted (processed at the stage of the saddle material with an allowance for coating, and press-fitted with the paint applied to the saddle material). The bulging portion 1A is in contact with the inner peripheral surface 2A of the tip end in a state where it can be withdrawn and withdrawn, and a swing rod that can fix the state is configured. A plurality of protrusions 3 made of a coating material are formed on a part of the bulging portion 1A over the entire outer peripheral surface, and the tips of the protrusions 3 are pressed against the inner peripheral surface 2A of the tip end. A mating portion 4 is formed by the bulging portion 1A including the protrusion 3 and the inner peripheral surface 2A of the tip end. In a state where the small-diameter casing 1 is pulled out, the tip of the large-diameter casing 2 is prevented from projecting to the small-diameter side from the axial length of the bulging portion 1A.

Next, the manufacturing method of this matching part 4 is demonstrated.
(1) The bulging portion of the outer peripheral surface of the rear end of the heel material formed in a separate process is polished, but the heel material itself is manufactured as follows. In other words, a prepreg formed by impregnating a thermosetting resin with carbon fiber as a reinforcing fiber is wound around a plurality of cores to form a conical tubular body, and an auxiliary made of prepreg at the rear end of the tubular body A pattern is wound to form the bulging portion, which is used as a bag material. The soot material thus formed is polished by a centerless processing machine. The bulging portion is polished by a separate centerless processing machine.
(2) Undercoating is applied to the cocoon material that has finished this polishing step by a squeeze coater.
(3) Polishing is performed again after this undercoating, and the surface coated with the undercoating is buffed.

(4) Next, as shown in FIG. 3 (b), the lacquer material A is subjected to the main coating. As shown in FIG. 3 (a), the bulging portion is made of paper (resin) as the first masking member. ) A projection masking tape 7 made of protrusions is put on the bulging portion. The masking tape 7 has a plurality of through holes 7A.
(5) With the masking tape 7 mounted in this manner, spray painting is performed with a spray gun 9 as shown in FIG. Here, the hard paint a is used as the paint used. A typical material is an acrylic / urethane paint, which has good adhesion and exhibits a predetermined hardness in a cured state after construction. This hard paint a is referred to as a protrusion-forming paint. The coating material a has a hardness corresponding to a pencil core hardness of 2H or higher in a state of being cured after spray coating. Although spray coating is performed here, it may be performed by squeaking.

(6) When the masking tape 7 is peeled off after spray coating, a plurality of protrusions 3 can be formed on the bulging portion of the bag material A as shown in FIG.
(7) Next, as shown in FIG. 3D, the second masking tape 8 as the second masking material is mounted at a position different from the formation site of the protrusion 3. The second masking tape 8 is not provided with a through hole 7A like the first masking tape 7. Paper (resin) or the like is used as the second masking material.

(8) As shown in FIG. 3E, with the second masking tape 8 attached, the spray gun 9 sprays and coats the site where the projections 3 are formed. Here, the soft paint b is used as the paint used. The paint b has a hardness corresponding to a pencil core hardness of less than 2H in a state of being cured after spray coating. A typical material is an elastomer-based paint, which has good adhesion and exhibits a predetermined hardness in a cured state after construction. As shown in FIG. 2, when spray coating is performed, the paint b can be coated on the periphery of the protrusion 3 together with the protrusion 3. Here, the soft coating material b is referred to as a coating material, and the coating material after being coated with the coating material b is referred to as a coating body. Although spray coating is performed here, it may be performed by squeaking.
(9) After performing the final coating, finish coating with clear or the like is performed, and the projections 3 are finished to have a fitting diameter as a set dimension to form the casings 1 and 2.

[Another Example]
(1) The structure of the mating portion 4 may be as follows. As shown in FIG. 4, the bulging portion 1A is formed on a smooth outer peripheral surface without unevenness, and a plurality of projections 3 are formed on the hem portion 1B having a small diameter on the tip side of the bulging portion 1A. The protrusion 3 and the outer peripheral surface of the bulging portion 1A may be press-fitted and fitted to the inner peripheral surface 2A of the large-diameter housing 2 in a state in which the protrusion 2 is pulled out.
(2) The structure of the mating portion 4 may be as follows. As shown in FIG. 5, a plurality of protrusions 3 are formed over the entire area extending from the outer peripheral surface of the bulging portion 1 </ b> A to the skirt portion 1 </ b> B, and the protrusions 3 are formed on the inner peripheral surface 2 </ b> A of the large-diameter housing 2. You may comprise so that it may press-fit.

Longitudinal side view showing mating part Longitudinal side view showing protrusion and covering of mating part A state in which protrusions are formed on the bulging portion of the cocoon material, (A) is a perspective view showing a state in which the first masking material is applied to the finished cocoon material, and (B) is a state in which a hard material paint is sprayed. (C) is a perspective view showing a state in which a protrusion is formed after spraying, (d) is a perspective view showing a state where a second masking material is applied, and (e) is a state where a soft material paint is sprayed The perspective view which shows (f) is a perspective view which shows the state after spraying Longitudinal side view showing a state in which the protrusion and the cover are formed on the hem portion A longitudinal side view showing a state in which the protrusion and the cover are formed by hanging from the hem portion to the bulging portion

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Small diameter housing 2 Large diameter housing 3 Protrusion 4 Matching part 7 1st masking material 7A Through-hole 8 2nd masking material

Claims (3)

  In the state where the small-diameter casing is pulled out from the large-diameter casing on the outer peripheral surface of the butt end of the small-diameter casing that can be moved back and forth with respect to the large-diameter casing, the inner periphery on the tip side of the large-diameter casing A mating portion is formed in pressure contact with the surface, and the mating portion is composed of a projection composed of a projection-forming paint and a coating material that is softer than the projection-forming coating used for the projection, and the projection A housing for a swinging rod formed with a coating covering the surface.   A large-diameter bulging portion is formed in a part in the axial direction of the outer peripheral surface of the heel end portion of the small-diameter housing, and the bulging portion and a small-diameter hem portion on the heel side from the bulging portion. 2. The wrinkle for a swing rod according to claim 1, wherein the mating portion is formed, and the protrusion covered with the covering body is formed on at least one small-diameter hem portion of the bulging portion and the small-diameter hem portion. body.   In the state where the small-diameter housing is pulled out from the large-diameter housing on the outer peripheral surface of the butt end portion of the small-diameter housing which can be moved back and forth with respect to the large-diameter housing, A method of manufacturing a housing for a swing rod that forms a mating portion that presses against a peripheral surface, wherein the mating portion is formed by covering the mating portion forming position with a first masking material having a plurality of through holes. In addition, a projection forming coating is applied from above the first masking material to form a projection, the first masking material is removed, and a portion other than the projection formation position is covered with a second masking material having no through hole, A method for manufacturing a casing for a swing rod, in which a projection coating portion is coated with a coating material that is softer than the projection formation coating.

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