JPH1175634A - Connecting structure of rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for connecting fishing rods capable of extending and shortening the rods with a little extending and shortening motion and smoothly fitting baits and removing fishes. SOLUTION: This connecting structure of rods comprises a first rod unit 100 having a first rod 1 and a second rod 2 and a second rod unit having a third rod and a forth rod. The first rod and the third rod have each a female screw unit 20 on the end of a rod tip side and the second rod and the forth rod have each a male screw unit 21 on the root side of the rod. The third rod of the second rod unit has an engaging male unit, while the second rod 2 on the tip side of the first rod unit 100 has an engaging female unit 30. The second rod unit is unitedly brought to be insertible into and removable from the first rod unit 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a rod of a swing-out fishing rod in which a plurality of rods are sequentially connected so as to be stowable.

[0002]

2. Description of the Related Art Fishing rods used for ayu fishing and mountain stream fishing (hereinafter referred to as fishing rods)
The “mountain stream rod” is connected so that, for example, a rod body of about 12 to 14 nodes can be sequentially stored in the rod body on the pole base side. A fishing line locking portion for locking the fishing line is provided at the tip of the tip side. In this mountain stream rod, when fishing with a sufficiently long fishing line (hereinafter referred to as “normal fishing”), fishing is performed with all the rods pulled out and extended to the longest. On the other hand, when performing fishing using a fishing line having an extremely short length with respect to the entire length of the rod body (hereinafter referred to as “lantern fishing”), when bait is attached to a device connected to the tip of the fishing line. Also, when catching fish that has been tackled, the operation is performed with several rods housed and reduced to an appropriate length. Also, when carrying a mountain stream rod after fishing, all rod bodies are stored and reduced to the length of one rod for a compact state.

[0003]

When "lantern fishing" is performed with the above-mentioned mountain stream rod, for example, in order to store a 6-section rod body for feeding and make it a suitable length, the rod body must be expanded and contracted. The operation needs to be repeated five times, and the expansion and contraction operation cannot be performed quickly. Here, if the length of the rod for one node is increased, the mountain stream rod can be shortened to an appropriate length with a small number of expansion and contraction operations, but if the rod for one node is too long, the operability of the rod decreases. Resulting in. In addition, it is inconvenient to carry it even if it is stored in the length of the rod for one node.

[0004] It is an object of the present invention to provide a connecting structure of a rod body which can expand and contract the rod body with a small amount of expansion and contraction operation, and can feed and fish smoothly.

[0005]

The connecting structure of a rod according to the first aspect of the present invention is a connecting structure of a rod in which a plurality of rods are connected in a swingable manner. First for storage
A first rod unit having a second rod body rigidly connected to the tip side of the rod body, and a third rod body and firmly connected to the tip side of the third rod body so as to be stored in the third rod body; And a second rod unit having a fourth rod body. And
The second rod unit is configured so that the first rod body can be stored in the first rod unit with a connection force weaker than the connection between the first rod body and the second rod body or between the third rod body and the fourth rod body. It is connected to the tip of the unit.

In this case, the first rod body and the second rod body of the first rod body unit are firmly connected, and the second rod body is applied even if a slight force is applied in the length direction of the rod body. It is not stored inside the first rod body. Also, the third rod body and the fourth rod body of the second rod unit are similar to the first rod unit, and the fourth rod body is capable of forming the third rod body even if a slight force is applied in the length direction of the rod body. It is not stored inside the body. On the other hand, the third rod on the rod base side of the second rod unit is fitted and connected to the second rod on the tip side of the first rod unit, and applies a force in the length direction of the rod. Thus, the entire second rod unit can be protruded and retracted inside the entire first rod unit. As a result, when trying to expand and contract the rod by applying force in the length direction of the rod,
The first rod body and the second rod body and the third rod body and the fourth rod body do not expand and contract, but expand and contract quickly with a small expansion and contraction operation using the first rod unit and the second rod unit as one unit.

When the rod is stored, the second rod can be stored in the first rod, and the fourth rod can be stored in the third rod. Length. The connecting structure of the rod body according to the second aspect is the connecting structure of the first aspect, wherein the second rod body and the fourth rod body have a male screw portion at the rod base side end, and the first rod body and the third rod body. The rod body has a female thread at the tip end side to be screwed with the male thread.

In this case, since the male screw portion is screwed into the female screw portion in a state where the second rod is pulled out from the first rod, a slight force is applied in the length direction of the rod. However, the second rod does not move in and out of the first rod. The same applies to the third rod body and the fourth rod body. As a result, when the rod body is expanded and contracted for feeding or the like, the second rod body and the fourth rod body are not stored in the first rod body and the third rod body, respectively.
With the rod unit and the second rod unit as one unit, it can be expanded and contracted quickly with less expansion and contraction operation.

[0009] The connecting structure of the rod according to the third aspect of the present invention is the same as the first aspect.
The first rod body and the third rod body have a concave portion in at least a part of the inner peripheral wall surface at the tip side end, and the second rod body and the fourth rod body have a rod base side end part. And a meshing portion that meshes with the concave portion. In this case, when the second rod body and the fourth rod body are pulled out from the first rod body and the third rod body, respectively, the meshing portions mesh with the concave portions, and a slight force is applied in the length direction of the rod body. However, the second rod and the fourth rod are the first rod and the third rod, respectively.
Do not enter or leave inside the rod.

[0010] The connecting structure of the rod according to the fourth aspect is the same as that of the third aspect.
Wherein the meshing portion is fixed to the rod-side end surfaces of the second and fourth rod bodies and has a hollow main body portion having a hole in the outer peripheral surface, and an elastic body provided in the main body portion. A projection provided in the main body and capable of protruding and retracting through a hole in the main body in response to elastic deformation of the elastic body. In this case, the protrusion can be moved in and out of the main body by the elastic force of the elastic body. When the second rod body and the fourth rod body are pulled out from the first rod body and the third rod body, respectively, the protrusion engages with the concave portion on the inner peripheral surface of the main body storage portion, and a slight force is applied in the length direction of the rod body. , The second rod and the fourth rod are the first rod respectively. Does not enter or exit the third rod.

[0011] The connecting structure of the rod according to the invention 5 is the invention 1
The second rod unit has a male fitting portion at the rod-side end, and the first rod unit has a female fitting portion to which the male fitting portion fits. At the tip of the tip side.
In this case, when the second rod unit is pulled out from the first rod unit, the male fitting part is fitted to the female female part, and the second rod unit is connected to the first rod unit. .

When a force is applied in the longitudinal direction of the rod body during feeding or the like, the fitting portion is disengaged, and the second rod unit is moved to the first rod unit.
It is stored in the rod unit and becomes short and compact. A connecting structure for a rod body according to a sixth aspect is the connecting structure according to the fifth aspect, wherein at least one of the fitting male part and the fitting female part has an elastic member. In this case, when storing the rod body,
An elastic member provided on at least one of the fitting male portion and the fitting female portion contacts a corresponding portion inside the rod body and suppresses mutual damage.

[0013] The connecting structure of the rod according to the seventh aspect is the same as the fifth aspect.
Wherein at least one of the fitting male part and the fitting female part has a hairy member. In this case, at the time of storing the rod body, it is possible to effectively suppress the hair-like members provided on at least one of the fitting male part and the fitting female part from coming into contact with the corresponding portions inside the rod body and damaging each other. Also, rattling of the fitting portion during fitting connection is suppressed.

[0014] The connecting structure of the rod according to the invention 8 is the invention 1
7. The connecting structure according to any one of claims 1 to 7, wherein the second rod and the fourth
The rod body has an elastic member on the rod end side end surface. In this case, the second rod unit in which the third rod member and the fourth rod member are connected is housed in the first rod unit in which the first rod member and the second rod member are connected. In this case, the elastic member prevents the inner peripheral surfaces of the other rods from hitting the rod-side end surfaces of the second rod and the fourth rod, thereby damaging each other.

The connecting structure of the rod according to the ninth aspect of the present invention is the same as that of the first aspect.
7. The connecting structure according to any one of claims 1 to 7, wherein the first rod and the third
The rod body has an elastic member on the tip end side. In this case, from the inside of the first rod unit where the first rod body and the second rod body are connected, the second rod where the third rod body and the fourth rod body are connected.
When the rod unit is pulled out, the elastic member prevents the rod end side end surface of the second rod body from hitting the tip end side end surface of the third rod body and damaging each other.

A tenth aspect of the present invention is the rod connecting structure according to any of the first to ninth aspects, wherein the first rod unit has an outer peripheral surface colored with one color, and The unit is colored other colors on the outer peripheral surface. In this case, the outer peripheral surfaces of the first rod body and the second rod body that constitute the first rod body are colored with one color, and the third rod body and the fourth rod that constitute the second rod body unit. Other colors are colored on the outer surface of the body. As a result, the user can easily distinguish the first rod unit and the second rod unit from the appearance, and the expansion and contraction operation of the rod can be performed more smoothly.

The outer peripheral surfaces of the first rod unit and the second rod unit are not only colored and made identifiable, but also, for example, a predetermined pattern is given to each rod unit.
A predetermined shape may be applied to make it identifiable.

[0018]

Embodiment

[First Embodiment] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. (Overall Structure) As shown in FIG. 1, the swing-out fishing rod employing the first embodiment of the present invention is designed so that it can be sequentially stored in a cylindrical first rod body 1 and a tip side of the first rod body 1. And a second rod body 12 to a twelfth rod body 12 connected to the second rod body. Each of the first rod body 1 to the twelfth rod body 12 is a cylindrical member, and is a rod body storage section 500 (FIGS. 2 and 3) capable of storing another rod body connected to the tip side. Reference). The first rod body 1 to the twelfth rod body 12 are formed, for example, by winding a sheet-shaped prepreg obtained by impregnating a resin into carbon fiber reinforcing fibers around a mandrel. Further, as will be described in detail later, the first rod 1 and the second rod 2 can be firmly connected to each other, and constitute the first rod unit 100. Similarly, the third rod body 3 and the fourth rod body 4 constitute a second rod body unit 200, and the fifth rod body 5 and the sixth rod body 6 constitute a third rod body unit 300. (Structure of the first rod unit 100 to the third rod unit 300) First, the connection structure between the first rod body 1 and the second rod body 2 (the connection structure of the first rod unit 100) will be described.

As shown in FIG. 2, the first rod unit 10
0 has a first rod 1 and a second rod 2. The first rod body 1 has a retaining portion 1a at the tip end side, which is formed to have a smaller diameter than the other portions and prevents the second rod body 2 housed in the rod body storage section 500 from falling out to the tip side. I have. A female screw portion 20 is provided on the inner peripheral surface on the rod base side of the retaining portion 1a. On the other hand, the second rod body 2 has a male screw portion 21 formed at the rod base end and having a diameter larger than that of the other portion and which can be screwed into the female screw portion 20 of the first rod body 1. The third rod 3 and the fourth rod 4
The connection structure (the connection structure of the second rod unit 200) and the connection structure between the third rod body 3 and the fourth rod body 4 (the connection structure of the third rod unit 300) are the first rod body 1 and the 2nd rod 2
It has the same structure as described above, and the description is omitted.

Next, the connection structure between the first rod unit 100 and the second rod unit 200 will be described. As shown in FIG. 3, the third rod body 3 on the rod side of the second rod unit 200 has a fitting male part 31 formed at the rod side end at a diameter larger than other parts. I have. On the other hand, the first rod unit 10
The second pole body 2 on the tip side of the zero has a female fitting portion 30 formed at a tip end side with a smaller diameter than other portions. The inner diameter of the interlocking female portion 30 matches the outer shape of the male fitting portion 31.

The connection structure between the second rod unit 200 and the third rod unit 300 is the same, and the description is omitted. (Configuration of Other Rods) Seventh Rod 7 to Eleventh Rod 11
Is a male fitting part (not shown) provided at the tip end side, and a male fitting part (not shown) provided at the rod end side.
And And each fitting male part is formed so as to match the inner peripheral diameter of the fitting female part of the other rod body that is inserted and connected to the rod base side, and is the ear tip side from the other rod body. Can be fitted and fixed when pulled out. Further, the twelfth pole body 12 closest to the tip has a fitting male portion at the end of the tip of the pole, and a rotatable wool-like fishing line locking part (not shown) for locking the fishing line at the end of the tip. Z). (Function) In the mountain stream rod thus configured, the first rod body 1
Casting, retrieving, etc. are performed in a state in which the twelfth rod body 12 is sequentially pulled out, fitted and fixed, and extended long. In particular, in the first rod body 1 and the second rod body 2 in the first rod unit 100, since the male screw portion 21 is screwed into the female screw portion 22 and firmly connected, the length of the fishing rod is reduced. Even if a slight force is applied in the vertical direction, the second rod body 2 does not move in and out of the first rod body 1. The same applies to the third rod body 3, the fourth rod body 4, the fifth rod body 5, and the sixth rod body 6 in the second rod body unit 200 and the third rod body unit 300.

On the other hand, when feeding the hook at the tip of the fishing line or taking in the fish on the hook, a force is applied in the length direction of the stream rod to shorten the entire length of the stream rod to an appropriate length. Here, the first rod body 1 and the second rod body 2 (the first rod body unit 100) are screwed together with the male screw part 21 and the female screw part 22 and are firmly fixed. Fourth rod body 4 (second rod body unit 200), fifth rod body 5, and sixth rod body 6
The (third rod unit 300) is also strongly connected. Therefore, when a force is applied in the length direction of the mountain stream rod, the first rod unit 100 to the third rod unit 300 expand and contract as one unit.

At the time of storage, the male screw portion 21 is rotated and removed from the female screw portion 22, and the second rod body 2 is stored in the first rod body 1, and the fourth rod body 4 is similarly moved to the third rod body 3. 6th to rod 3
The rod 6 is housed in the fifth rod 5. As a result, the first rod 1
All the rods up to the twelfth rod body 12 are stored in units of one knot, resulting in a compact state. As described above, in the mountain stream rod employing the first embodiment of the present invention, the rod is firmly connected by the male screw portion 21 and the female screw portion 22 and is connected so as not to expand and contract even when a force is applied in the axial direction. It has a body connection structure and a rod connection structure that is fitted and fixed by the fitting male part and the fitting female part, and is connected so as to be able to enter and exit another rod body when a force is applied in the axial direction. Therefore, the length of the fishing rod can be reduced to a length suitable for performing a predetermined operation with a small number of operations.

[Second Embodiment] Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. In the mountain stream rod employing the second embodiment of the present invention, as shown in FIG.
The 1st rod body 1 which comprises the 1st rod body unit 100 has the stopper part 1a at the tip of a tip side. This retaining part 1
a is formed to have a smaller diameter than the other parts,
To prevent the second rod body 2 inserted into the front end from slipping out to the tip side. A plurality of recesses 45 are provided on the inner peripheral surface on the rod base side of the retaining portion 1a. On the other hand, the second rod body 2 has a meshing portion 40 formed at the rod end side end portion with a slightly larger diameter than other portions.
have.

As shown in FIG. 5, the engaging portion 40 is a cylindrical member having a space therein, and has a main body 4 made of a synthetic resin such as ABS resin having a plurality of holes 41a on the outer peripheral side surface.
1 and an elastic body 43 arranged in a space inside the main body 41
And a plurality of protrusions 42 arranged on the elastic body 43 so as to protrude outward from the hole 41a of the main body 41. The main body portion 41 is formed of a pair of half-split members vertically divided into right and left.
2. After the elastic body 43 is stored, the pair of half members are bonded on the opening side. Then, the second rod body 2 is adhered and fixed to the rod end side end. Protrusion 42
The elastic body 43 is formed by molding synthetic rubber such as styrene-butadiene rubber, polybutadiene, acrylic rubber, and chloroprene rubber into a predetermined shape.

The other configuration is the same as that of the first embodiment, and the description is omitted. In the mountain stream rod configured as described above, when the projection 42 is located at the position of the concave portion 45 of the first rod body 1, the projection 42 is formed by the elastic force of the elastic body 43.
Jumping out of one. The protruding projections 42 mesh with the recesses 45 to fix the second rod body 2. Even if a slight force is applied in the length direction, the second rod body 2 can store the rod body in the first rod body 1. It is not stored in the unit 500.

When a large force is applied to the second rod body 2 in the length direction, the engaging portion 40 moves together with the second rod body 2, and the projection 5 is displaced from the concave portion 45 of the first rod body 1. And the first
It comes into contact with the inner peripheral surface of the rod body 1. This contact causes the protrusion 42
Receives a force toward the inside of the main body 41.
The protrusions 42 are arranged on the elastic body 43, and the force received from the inner peripheral surface of the first rod body 1 is absorbed by the elastic body 43. The protrusions 3 are housed in the main body 41, and the second rod Body 2 is the first rod 1
Is inserted into.

As described above, in the mountain stream rod according to the second embodiment of the present invention, the meshing portion 40 includes the first rod body 1 and the second rod body 2.
Are strongly connected to each other, so that the same operation and effect as in the first embodiment can be obtained. Third Embodiment Hereinafter, a third embodiment of the present invention will be described.

The third rod body 3 of the mountain stream rod according to the third embodiment of the present invention has a ring-shaped elastic member 60 on the tip end side as shown in FIG. In addition, the second rod body 2 and the fourth rod body 4 also have elastic members 61 on the rod end side end surfaces. The elastic members 60 and 61 are made of synthetic rubber such as styrene-butadiene rubber, polybutadiene, acrylic rubber, and chloroprene rubber, respectively, so as to conform to the end faces of the rod bodies. Adhered to.

The other configuration is the same as that of the first embodiment, and the description is omitted. In the mountain stream rod thus configured, the second rod unit 20 is provided in the first rod unit 100.
The elastic member 60 effectively prevents the tip end side end surface of the third rod body 3 of the second rod body unit 200 from contacting and damaging the inner peripheral surface of the first rod body unit 100 when inserting and removing 0. suppress. Further, the elastic member 61 suppresses that the rod-side end surfaces of the second rod body 2 and the fourth rod body 4 come into contact with and damage each other to the outer peripheral surfaces of the other rod bodies inserted therein. When the second rod unit is pulled out from the first rod unit 100, the rod-side end surface of the second rod 2 of the first rod unit 100 and the third rod 3 of the second rod unit 200 are pulled out. The elastic members 60,
61 suppresses effectively.

As shown in FIG. 7, notches 2 are formed on the inner diameter sides of the rod-side end surfaces of the second rod body 2 and the fourth rod body 4, respectively.
a, 4a, and a ring-shaped elastic member 71 may be fitted into each of the notches 2a, 4a. Also, the third
The notch 3a may be provided on the outer peripheral side of the tip end side end surface of the rod body 3, and the ring-shaped elastic member 70 may be fitted into the notch 3a.

[Fourth Embodiment] Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. In the mountain stream rod employing the fourth embodiment of the present invention, as shown in FIG.
A hairy member 80 is provided near the fitting female portion 30 on the tip side of the second rod body 2.
Is provided. The hair-like members 80 are members made of synthetic resin fibers such as nylon, and are provided at a plurality of locations on the inner peripheral surface of the second rod body 2 on the tip side. A connecting portion of another rod body (for example, a connection between the twelfth rod body 12 and the eleventh rod body 11) in which the male fitting part 31 and the female fitting part 30 are formed and the rod bodies are fitted and connected to each other. A similar hair-like member 80 is also provided in part (1).

The other configuration is the same as that of the first embodiment, and the description is omitted. In the mountain stream rod configured as described above, for example, at the connection portion between the second rod body 2 and the third rod body 3,
The bristle member 80 provided on the inner peripheral surface on the tip side of the second rod body absorbs the vibration between the second rod body 2 and the third rod body 3, and the second rod body 2 and the third rod body 3 Connection becomes stable. Further, the tip end of the second rod body 2 contacts the outer peripheral surface of the third rod body 3 and the third rod body 3
It also keeps the outer peripheral surface from being damaged. Furthermore, the fitting between the second rod body 2 and the third rod body 3 becomes smoother.

[Other Embodiments] (a) The number of rod units is not limited to three, and any rod unit can be provided. (B) The connection between the first rod body and the second rod body is a fitting structure,
The first rod unit may be configured by the second rod body and the third rod body. (C) Any number of rods can be used. (D) An elastic member can be provided on at least one of the fitting male part and the fitting female part. (E) A predetermined color is applied to the outer peripheral surfaces of the first rod body and the second rod body constituting the first rod body unit, and the outer periphery of the third rod body and the fourth rod body constituting the second rod body unit The surface may be colored with another predetermined color. By giving such a color, the user can easily determine from the appearance the connecting portion of the rod body that is strongly connected and the connecting portion of the rod body that is not firmly connected. In addition,
The rod body may be identified by applying a predetermined pattern or a predetermined shape to the outer peripheral surface of the rod body.

[0035]

According to the present invention, since the rod body has the rod unit firmly connected to the rod body, the rod body can be made to an appropriate length with a small expansion and contraction operation. Also, when putting another rod unit in and out of the rod unit,
Breakage of the rod caused by contact between the rod end side end face of the rod body and the tip end side end face of another rod body can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is an overall view of a mountain stream rod employing a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a connection portion between a first rod body and a second rod body (first rod unit) in FIG. 1;

FIG. 3 is an enlarged sectional view of a connection portion between a second rod body and a third rod body (corresponding to a first rod unit and a second rod unit) in FIG. 1;

FIG. 4 shows a first example of a mountain stream rod employing the second embodiment of the present invention.
The expanded sectional view of the connection part of a rod body and a 2nd rod body (1st rod body unit).

FIG. 5 is an enlarged sectional view of a meshing portion in FIG. 4;

FIG. 6 shows a first example of a mountain stream rod employing the third embodiment of the present invention.
FIG. 5 is an enlarged sectional view of a rod unit and a second rod unit.

FIG. 7 is an enlarged cross-sectional view of a first rod unit and a second rod unit of another mountain stream rod employing the third embodiment of the present invention.

FIG. 8 shows a second example of a mountain stream rod employing the fourth embodiment of the present invention.
The expanded sectional view of the connection part of a rod body and a 3rd rod body (it corresponds to a 1st rod body unit and a 2nd rod body unit).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st rod body 2 2nd rod body 3 3rd rod body 4 4th rod body 20 female screw part 21 male screw part 30 fitting female part 31 fitting male part 40 meshing part 60,61,70,71 elastic member 100 First rod unit 200 Second rod unit

Claims (10)

[Claims] 1. A connecting structure of a rod body in which a plurality of rod bodies are connected in a swingable manner, wherein the first rod body and the first rod body are firmly attached to a tip side of the first rod body so as to be housed in the first rod body. A first rod unit having a second rod body connected thereto, a third rod body, and a fourth rod firmly connected to the tip side of the third rod body so as to be housed in the third rod body. A second rod unit having a body, wherein the second rod unit has a coupling force weaker than the coupling between the first rod and the second rod or between the third rod and the fourth rod. Then, the first rod unit can be stored in the first rod unit.
The connecting structure of the rod connected to the tip side of the rod unit. 2. The second rod body and the fourth rod body have a male screw portion at a rod base end, and the first rod body and the third rod body have the male screw part at a tip end side. The rod connecting structure according to claim 1, further comprising a female screw portion to be screwed. 3. The first rod body and the third rod body have a concave portion in at least a part of the inner peripheral wall surface at the tip side end, and the second rod body and the fourth rod body are rod end side ends. The connecting structure for a rod body according to claim 1, further comprising a meshing portion provided on the rod and meshing with the concave portion. 4. A hollow main body fixed to the end faces of the second and fourth rod bodies on the rod base side and having a hole in an outer peripheral surface, and an elastic body provided in the main body. The connecting structure for a rod body according to claim 3, further comprising: a protrusion provided in the main body and capable of protruding and retracting through a hole in the main body in response to elastic deformation of the elastic body. 5. The second rod unit has a male fitting portion at a rod end side end, and the first rod body unit has a female fitting portion to which the male fitting portion fits, and a tip end on a tip side. The connecting structure for a rod body according to any one of claims 1 to 4, wherein 6. The rod connecting structure according to claim 5, wherein at least one of the fitting male part and the fitting female part has an elastic member. 7. The rod connecting structure according to claim 5, wherein at least one of the fitting male part and the fitting female part has a hairy member. 8. The connecting structure for a rod body according to claim 1, wherein the second rod body and the fourth rod body have an elastic member on a rod-side end face. 9. The connecting structure for a rod according to claim 1, wherein the first rod and the third rod have an elastic member on a tip end side. 10. The method according to claim 1, wherein the first rod unit has an outer peripheral surface colored with one color, and the second rod unit has an outer peripheral surface colored with another color. A connection structure for a rod body according to the embodiment.