阅读说明：本技术 钓竿接合部构造
(Joint structure of fishing rod
) 是由 松本圣比古
恐田欣幸
崎山晃
山中贵弘
髙原刚
辰己卓司 于 2019-07-08 设计创作，主要内容包括：本发明提供一种钓竿接合部构造,垂钓操作时,即使在甩出钓组等操作时也能预防竿梢侧竿体从竿尾侧竿体脱出即所谓“脱节现象”,且收拾处理而作返回准备时可容易地将竿梢侧竿体与竿尾侧竿体分离。该钓竿接合部构造构成为可将竿梢侧竿体(1)与竿尾侧竿体(2)在固定状态与非固定状态间切换,该固定状态是通过竿尾端侧接合部(1C)与竿梢端侧接合部(2F)的压接状态而固定为垂钓操作状态,该非固定状态是解除压接状态而变成非垂钓操作状态,在竿尾端侧接合部(1C)与竿梢端侧接合部(2F)的表面配置预浸体,该预浸体具有在相对于竿轴线(X)倾斜的方向上对齐的强化纤维(c),竿轴线(X)与预浸体的强化纤维(c)所成夹角为45°≦Θ＜90°。(The present invention provides a structure of a fishing rod joint part, which can prevent the rod body at the rod tip side from falling off from the rod body at the rod tail side even when the fishing group is thrown out or the like during the fishing operation, namely the so-called 'disjointing phenomenon', and can easily separate the rod body at the rod tip side from the rod body at the rod tail side when the recovery processing is carried out for the return preparation. The fishing rod joint part structure is configured to switch between a fixed state and a non-fixed state between a rod tip side rod body (1) and a rod tail side rod body (2), the fixed state is a fishing operation state fixed by a pressure welding state of the rod tail side joint part (1C) and the rod tip side joint part (2F), the non-fixed state is a non-fishing operation state by releasing the pressure welding state, a prepreg is arranged on the surface of the rod tail side joint part (1C) and the rod tip side joint part (2F), the prepreg has reinforcing fibers (C) aligned in a direction inclined relative to a rod axis (X), and an included angle formed by the rod axis (X) and the reinforcing fibers (C) of the prepreg is 45 degrees ≦ theta < 90 degrees.)
1. A structure of a fishing rod joint part is configured to switch a rod body at the rod tip side and a rod body at the rod tail side between a fixed state and a non-fixed state, the fixed state is a fishing operation state by the pressure welding state of the rod tail end side joint part of the rod body at the rod tail side and the rod tip end side joint part of the rod body at the rod tail side, the non-fixed state is a state in which the pressure-contact state is released and the fishing rod is not operated, a prepreg is arranged on the surface of the joining part of the rod tail end side and the rod tip end side, the prepreg has reinforcing fibers aligned in a direction inclined with respect to the rod axis, wherein the reinforcing fibers on the surface of the rod-end-side joint portion and the reinforcing fibers on the surface of the rod-tip-side joint portion are set in the same inclined direction, and the angle Θ formed by the rod axis and the reinforcing fibers is set to 45 DEG ≦ Θ < 90 deg.
2. A structure of a fishing rod joint part is configured to switch a rod body at the rod tip side and a rod body at the rod tail side between a fixed state and a non-fixed state, the fixed state is a fishing operation state by the pressure welding state of the rod tail end side joint part of the rod body at the rod tail side and the rod tip end side joint part of the rod body at the rod tail side, the non-fixed state is a state of releasing the pressure-contact state and changing into a non-fishing operation state, a prepreg is arranged on the surface of one of the rod tail end side joint part and the rod tip end side joint part, the prepreg has reinforcing fibers aligned in a direction inclined with respect to the rod axis, and a sheet made of a nonwoven fabric is arranged on the surface of the other of the rod-end-side joint portion and the rod-tip-side joint portion, and the included angle theta between the rod axis and the reinforcing fiber of the prepreg is 45 degrees and theta is less than or equal to 90 degrees.
3. The fishing rod engaging portion structure according to claim 1 or 2,
the rod body at the rod tip side is a solid rod-shaped or hollow tubular rod body at the small diameter tip side positioned at the rod tip side, the rod body at the rod tail side is a hollow tubular rod body at the large diameter tip section positioned at the rod tail side, so as to form any one of the following rod bodies,
(a) the rod tail end side joint part of the rod body with the small diameter tip end is embedded in the rod tip end side joint part of the rod body with the large diameter tip end to form a fixed connected rod body;
(b) the rod tip end side joint part of the rod body with the large diameter tip end is embedded in the rod tail end side joint part of the rod body with the small diameter tip end to form a fixed reverse-relay rod body;
(c) the rod tip end side joint part or the rod tail end side joint part is a dimple core material formed with an inclined outer peripheral surface, and the dimple core material is fitted into the opposite side joint part to form a fixed state dimple connecting rod body.
4. The fishing rod engaging portion structure of claim 3,
one of the rod tail end side joining part and the rod tip end side joining part forms an inclined outer peripheral surface, the other of the rod tail end side joining part and the rod tip end side joining part forms an inclined inner peripheral surface, thereby forming any one of the following rod bodies,
(a) the rod tail end side joint part of the rod body with the small diameter tip end is embedded in the rod tip end side joint part of the rod body with the large diameter tip end to form a fixed connected rod body;
(b) the rod tip end side joint part of the rod body with the large diameter tip end is embedded in the rod tail end side joint part of the rod body with the small diameter tip end to form a fixed reverse-relay rod body;
(c) the rod tip end side joint part or the rod tail end side joint part is a dimple core material formed with an inclined outer peripheral surface, and the dimple core material is fitted into the opposite side joint part to form a fixed state dimple connecting rod body.
5. The fishing rod engaging portion structure according to claim 1 or 2,
the rod body on the rod tip side is a small-diameter tip rod body in a hollow cylinder shape on the rod tip side, the rod body on the rod tail side is a large-diameter tip rod body in a hollow cylinder shape on the rod tail side, the outer peripheral surface of the rod tail end part of the rod body on the small-diameter tip rod body forms a rod tail end side joint part, the inner peripheral surface of the rod tip end part of the large-diameter tip rod body forms a rod tip end side joint part, the small-diameter tip rod body is taken out from the large-diameter tip rod body, the outer peripheral surface of the rod tail end side joint part is in crimping with the inner peripheral surface of the rod tip end side joint part, and the rod body in a fixed state is formed in a vibration-out type rod body.
6. The fishing rod joint structure according to any one of claims 1 to 5,
an indication mark is formed on the rod body at the rod tip side and the rod body at the rod tail side, and the indication mark indicates that the rod tail side joint part and the rod tip side joint part are set to be in a specific relative position relation.
Technical Field
The present invention relates to a fishing rod joint structure, which is composed of: can switch over the pole body of rod tip side and the pole tail side pole body between stationary state and non-stationary state, this stationary state is through the pole tip side joint portion of the pole body of rod tip side with the crimping state of the pole tip side joint portion of the pole tail side pole body is fixed for the operating condition that fishes, and this non-stationary state is relieved the crimping state and becomes non-operating condition that fishes.
Background
The following structure is adopted as such a fishing rod joint portion structure. That is, a rod end side joint portion is formed at the rod end portion of the tip rod as the rod end side rod body, and a rod tip end side joint portion of the tip rod as the rod end side rod body is formed, thereby constituting a reverse-junction relay rod (cited document 1)
Disclosure of Invention
The invention provides a fishing rod joint part, which can prevent the rod body at the rod tip side from dropping from the rod body at the rod tail side even when the fishing group is thrown out or the like during the fishing operation, namely, the so-called 'disjointing phenomenon', and can easily separate the rod body at the rod tip side from the rod body at the rod tail side when the recovery processing is carried out for the return preparation.
(Structure)
The invention of claim 1 is characterized in that: the rod end side rod body and the rod tail side rod body can be switched between a fixed state and a non-fixed state, the fixed state is a fixed fishing operation state through the rod tail side joint part of the rod tip side rod body and the compression joint state of the rod tip side joint part of the rod tail side rod body, the non-fixed state is a state that the compression joint state is released and the non-fishing operation state is changed, the surface of the rod tail side joint part and the rod tip side joint part is provided with a prepreg, the prepreg is provided with reinforced fibers aligned in the direction inclined relative to the rod axis, the reinforced fibers on the surface of the rod tail side joint part and the reinforced fibers on the surface of the rod tip side joint part are set to be in the same inclined direction, and the included angle theta formed by the rod axis and the reinforced fibers is set to be 45 degrees and theta is less than 90 degrees, and the action effect is as follows.
(action)
That is, since the reinforcing fibers on the surface of the rod tip end side joining part and the reinforcing fibers on the surface of the rod tail end side joining part are set to have the same inclination direction, the reinforcing fibers of both joining parts perform the same function as the thread, and when both are relatively rotated in one direction, the pressure-bonded state of both joining parts is firmly fastened, and when they are relatively rotated in the opposite direction, the side of the non-pressure-bonded state is loosened.
In particular, by setting the angle Θ between the rod axis and the reinforcing fiber of the prepreg to 45 ° ≦ Θ < 90 °, the reinforcing fibers of the prepreg are brought into a state close to being separated from the rod axis, that is, into a state close to being raised from the rod axis, and the reinforcing fibers of both joints are well engaged with each other.
Thus, the fishing rod can be prevented from being firmly fastened or dislocated during a fishing operation and from being circumferentially deflected by the torque of the fishing line guide when the fishing group is thrown out, and can be loosened during a non-fishing operation, thereby facilitating a picking-up process.
(Effect)
Therefore, a structure of a fishing rod joint part can be provided, which can easily cope with any situation of the fishing operation and the non-fishing operation by slightly applying the relative rotation operation to the rod body at the rod tip side and the rod body at the rod tail side.
(Structure)
The invention of claim 2 is characterized in that: can switch the rod body at the rod tip side and the rod body at the rod tail side between a fixed state and a non-fixed state, the fixed state is a fishing operation state by the pressure welding state of the rod tail end side joint part of the rod body at the rod tail side and the rod tip end side joint part of the rod body at the rod tail side, the non-fixed state is a state that the pressure welding state is released and the fishing rod is changed into a non-fishing operation state, a prepreg is arranged on the surface of one of the rod tail end side joint part and the rod tip end side joint part, the prepreg has reinforcing fibers aligned in a direction inclined with respect to the rod axis, a nonwoven fabric sheet is arranged on the other surface of the joining part of the rod tail end side and the joining part of the rod tip end side, and the angle Θ between the rod axis and the reinforcing fiber of the prepreg is set to 45 ° ≦ Θ < 90 °, and the effects thereof are as follows.
(Effect)
Only one of them is non-woven fabric, the engaging degree of the two reinforcing fibers is not as the degree of claim 1, but the engaging state of the two joining parts can be switched under the condition that the rod body at the rod tip side and the rod body at the rod tail side are relatively rotated, which is the same as the condition of claim 1.
Therefore, a structure of a fishing rod joint part capable of easily coping with any situation of a fishing operation and a non-fishing operation by slightly rotating a rod body at the rod tip side and a rod body at the rod tail side can be provided.
(Structure)
The invention of claim 3 is characterized in that: the rod body at the rod tip side is a solid rod-shaped or hollow tubular rod body at the rod tip side with a small diameter tip, the rod body at the rod tail side is a hollow tubular rod body with a large diameter tip section at the rod tail side, so that a rod body with a large diameter tip section is formed
(a) The rod tail end side joint part of the rod body with the small diameter tip end is embedded in the rod tip end side joint part of the rod body with the large diameter tip end to form a fixed connected rod body;
(b) the rod tip end side joint part of the rod body with the large diameter tip end is embedded in the rod tail end side joint part of the rod body with the small diameter tip end to form a fixed reverse-relay rod body;
(c) the engaging part at the tip end side of the rod or the engaging part at the tail end side of the rod is a dimpled core material formed with an inclined outer circumferential surface, and the dimpled core material is fitted into the engaging part at the opposite side to form a dimpled connecting rod body in a fixed state, and the operational effects thereof are as follows.
(Effect)
In the structure of the secondary rod, the reverse secondary rod and the hollow rod, when the rod tail end side joint part of the rod body at the rod tip side is embedded with the rod tip end side joint part of the rod body at the rod tail side, the joint part of one is inserted into the joint part of the other to be embedded. Therefore, when the fitting force between the joint portions is weak, "a dislocation phenomenon" is likely to occur as described above.
However, by improving the rod according to the present invention such that the direction of the reinforcing fiber is inclined with respect to the rod axis and the angle Θ formed between the rod axis and the reinforcing fiber of the prepreg is set to 45 ° ≦ Θ < 90 °, the occurrence of "disjointed image" can be effectively suppressed. Further, the loosening operation can be performed only by relative rotation in the opposite direction at the time of the pickup, and a structure of the fishing rod engaging portion which is also advantageous in this respect can be provided.
(Structure)
The invention of claim 4 is characterized in that: an inclined outer circumferential surface is formed at one of the rod tail end side engaging part and the rod tip end side engaging part, and an inclined inner circumferential surface is formed at the other of the rod tail end side engaging part and the rod tip end side engaging part, thereby forming
(a) A rod body of a combined type in which the rod tail end side joint part of the rod body of the small diameter tip end side is embedded in the rod tip end side joint part of the rod body of the large diameter tip end rod to form a fixed state,
(b) The rod tip end side joint part of the rod body with the large diameter tip end is embedded in the rod tail end side joint part of the rod body with the small diameter tip end to form a fixed reverse-connection rod body,
(c) The engaging part at the rod tip end side or the engaging part at the rod tail end side is a dimple core material formed with an inclined outer circumferential surface, and the dimple core material is fitted into the engaging part at the opposite side to form a fixed dimple-type rod body, and the operational effects thereof are as follows.
(Effect)
As described above, by introducing the inclined surface structure into the joint portion between the two, the structure in which the contact area between the joint portion between the two is increased and the two are well connected to each other can be further introduced as the structure of the present invention in which the reinforcing fibers are arranged in the inclined direction, and the occurrence of the "disjointing phenomenon" can be further suppressed.
Further, the inclined surface structure is introduced, and even if the rotation angle is small when the fishing rod is relatively rotated in the opposite direction, the contact surfaces of the two joining portions are immediately separated, so that the fishing rod joining portion structure which is easy to be cleaned can be provided.
(Structure)
The invention of claim 5 is characterized in that: the rod body on the rod tip side is a small-diameter tip rod body in a hollow cylinder shape on the rod tip side, the rod body on the rod tail side is a large-diameter tip rod body in a hollow cylinder shape on the rod tail side, the outer peripheral surface of the rod tail end part of the small-diameter tip rod body forms a rod tail end side joint part, the inner peripheral surface of the rod tip end part of the large-diameter tip rod body forms a rod tip end side joint part, the small-diameter tip rod body is drawn out from the large-diameter tip rod body, the outer peripheral surface of the rod tail end side joint part is in crimping with the inner peripheral surface of the rod tip end side joint part, so that the fixed-state vibration-out rod body is formed, and the action effect is as follows.
(Effect)
In the vibrating rod body, the rod body at the rod tip side is inserted from the rod tail side opening end of the rod body at the rod tail side and is pulled out from the rod tip side opening end, so that the rod tail side joint part of the rod body at the rod tip side is embedded in the rod tip side joint part of the rod body at the rod tail side to form a fixed state for fishing operation, therefore, 'disjointing phenomenon' is relatively less, but during fishing operation, the rod body at the rod tip side can move towards the rod tip side relative to the rod body at the rod tail side, and therefore, the embedding force of the joint parts is higher as the service life is longer. Therefore, the picking process is difficult, but even in such a case, the present invention can release the consolidation phenomenon of the joint portion by relative rotation in the opposite direction, and can perform the picking process accurately.
(Structure)
The invention of claim 6 is characterized in that: an indication mark is formed on the rod body at the rod tip side and the rod body at the rod tail side, the indication mark indicates that the rod tail side joint part and the rod tip side joint part are set to be in a specific relative position relationship, and the action effect is as follows.
(Effect)
The indication mark can observe the relative position between the rod tail end side jointing part and the rod tip end side jointing part intuitively, and the rod can be in fixed state or non-fixed state easily.
In this respect, it is possible to visually observe the state even when the guide ring is present, but when there is no guide ring in the vicinity of the joining portion on the rod tail end side and the joining portion on the rod tip end side, it is difficult to use the guide ring as the indication mark.
In addition, when the rod is adjusted to be in a fixed state, if the rotating direction of the rod body is integrated into the indication mark, the very convenient close design can be realized.
Drawings
Fig. 1(a) is a longitudinal sectional side view showing a joining portion of a rod end side joining portion of a rod body at a rod tip side and a rod tip side joining portion of a rod body at a rod tip side, and (b) is a longitudinal sectional side view showing a state before the rod body at the rod tip side and the rod body at the rod tip side are joined;
FIG. 2(a) is a partially sectional side view showing the state before the rod tip side core rod part and the rod tail side core rod part are joined, (b) is a vertically sectional side view showing the state after the rod tip side core rod part and the rod tail side core rod part are joined, (c) is a developed view showing the glass reinforced fiber prepreg constituting the innermost layer, (d) is a side view showing the state in which the innermost layer is wound around the core rod, and (e) is a side view showing the state in which the prepreg tape is wound to form an inner tape layer;
fig. 3(f) is a development view showing a prepreg sheet forming an intermediate sheet layer, (g) is a side view showing a state in which the prepreg sheet is wound to form the intermediate sheet layer, and (h) is a side view showing a state in which a prepreg tape is wound to form an outer tape layer and a reinforcing prepreg is wound to form a reinforcing layer;
FIG. 4 is a longitudinal sectional side view showing the tip part of the rod body at the rear side of the rod;
FIG. 5(a) is a perspective view showing a rod material in the case of forming a rod tip side rod body into a solid rod-like body, (b) is a perspective view showing a rod tip side part and a rod tail side part of a reverse tapered surface in the case of forming the solid rod-like body into a forward tapered surface, (c) is a centerless grinder used in the case of forming the rod tip side part and the rod tail side part of the reverse tapered surface in the case of forming the solid rod-like body into a forward tapered surface, (d) is a side view showing a state before the rod tail side part of the solid rod-like body is wound with the rod tail side prepreg sheet, and (e) is a side view showing a state in which the rod tail side prepreg sheet has been wound with the rod tail side part of the solid rod-like body;
FIG. 6 is a vertical cross-sectional side view showing another embodiment of the structure of the vibrating rod in which the rod tip end side engaging part and the rod tail end side engaging part are engaged and fixed;
FIG. 7 is a vertical cross sectional side view showing another embodiment of a structure for connecting a rod body at the tip side and a rod body at the rear side by using a cavity core material;
FIG. 8(a) is a side view showing the engaging part at the tip end side of the test rod inserted into the engaging part at the tail end side of the rod to be engaged with each other, (b) is a side view showing the state of measuring the tensile force, and (c) is a table showing the measurement results;
FIG. 9 is a longitudinal sectional side view showing another embodiment of the structure of the rod body at the tip end side of the rod;
FIG. 10 is a longitudinal sectional side view showing another embodiment of the structure of the rod body at the rear end of the rod;
fig. 11 is a side view showing a rod body at the tip end side and a rod body at the rear end side provided with indication marks showing that the joining portion at the rear end side and the joining portion at the tip end side are set to a specific relative positional relationship.
Detailed Description
The present invention provides a rod end structure of a fishing rod, in which a rod end side joint part of a rod body at a rod tip side and a rod tip side joint part of a rod body at a rod tail side are embedded and connected in the fishing rod, so-called 'disjointing' phenomenon that the rod body at the rod tip side is separated from the rod body at the rod tail side and flies out when casting a fishing group and so-called 'consolidation' phenomenon that the rod body at the rod tip side and the rod body at the rod tail side cannot be separated at the end stage of fishing can be easily avoided.
(first embodiment)
As shown in figures 1 and 2, the merging rod A is composed by connecting the rod body 1 at the rod tip side and the rod body 2 at the rod tail side. That is, the outer peripheral surface of the end portion of the rod tip side rod body 1 at the tail side is formed into the reverse tapered surface 1a whose diameter is smaller toward the tail side, the inner peripheral surface in the rod tip side opening end of the rod tip side rod body 2 is formed into the reverse tapered surface 2a, and the end portion of the rod tip side rod body 1 at the tail side is embedded in the rod tip side opening end of the rod tip side rod body 2.
The number of the rod bodies to be connected as the merging rod a is not limited to the two. The fishing rod A is exemplified, each rod body is provided with a fishing line guide ring (not shown), and the handle rod is provided with a fishing line wheel seat, so that the fishing rod A enjoys the pleasure of the road-Asia fishing.
The rod body 1 on the tip end side of the rod A is manufactured as follows. As shown in fig. 5(a), glass-reinforced fiber bundles (500 to 1000) bundled along an axis are immersed in a thermosetting resin solution, impregnated with the resin, and then drawn and cut into a predetermined length by a die to form a rod material in the shape of a solid rod. Here, carbon fibers and the like can be used as the reinforcing fibers, but glass fibers having a lower tensile elastic modulus and higher flexibility than carbon fibers and the like are used. As the tensile modulus of elasticity of the glass fiber to be used, 5Ton/mm can be used2～15Ton/mm2。
As shown in fig. 5(a), the rod tip side rod body 1 processed into a solid rod-shaped body is formed into a forward tapered surface having a larger diameter toward the rod tail side as shown in fig. 5(B) by using the centerless grinder C shown in fig. 5(C), the rod tip side part 1A is disposed on the rod tail side of the rod tip side part 1A, and the rod tail side part 1B is formed into a reverse tapered surface having a smaller diameter toward the rod tail side.
As shown in fig. 5(d), a carbon fiber rod tail end side prepreg sheet 9 is wound from the rear end of the rod tip side part 1A to the whole rod tail side part 1B. The prepreg sheet 9 at the rod tail end side is cut into a trapezoidal shape having a thickness of 2 to 3mm/1000 and being wider toward the rod tip side, and is wound in 3 layers. In the wound state, the directions of the reinforcing fibers c of the rod tail end side prepreg sheet 9 are aligned in a spiral shape in a direction inclined with respect to the rod axis X.
As shown in fig. 5(e), the rod end side rod body 1 wound with 3 layers of rod end side prepreg sheet 9 is baked, and the surface grinding is performed on the rod end side outer circumferential surface of the rod end side rod body 1 in which the resin and the reinforcing fiber C are integrated and solidified by using the centerless grinder C shown in fig. 5(C), so as to ensure the required surface precision and inclination, thereby forming the rod end side joining part 1C of the rod end side rod body 1. The reinforcing fibres c make an angle theta with the rod axis X in the range of 45 DEG to < theta < 90 deg. Ideally in the range 50 ° < Θ < 70 °.
Next, the process of producing the rod body 2 at the rod tail side will be described with reference to the structure of the mandrel 3. As shown in fig. 2(a) and (B), the mandrel 3 includes a tip-side mandrel portion 3A and a tail-side mandrel portion 3B. The mandrel bar 3 is generally formed in a substantially truncated cone shape from steel such as steel, stainless steel, or titanium, and is surface-coated with chrome plating or the like.
The tip-side core rod portion 3A is formed in a tubular shape from the tip end side to the tip end side, and has a substantially truncated cone shape having a reverse tapered surface with a gradually decreasing outer diameter. The rod tail side core rod part 3B is formed in a cylindrical shape from the tip end side to the tail end side, and has a substantially truncated cone shape having a regular tapered surface with a gradually increasing outer diameter.
A dimple core part 3B is formed at the tip end side of the rod tail side core rod part 3B and is formed to be capable of being caught in a engaging hole 3A of the tail side formed by the tubular inner space of the rod tip side core rod part 3A.
The rod tip side rod part 3A and the rod tail side rod part 3B as described above are inserted and engaged in the engaging hole 3A formed in the tail side in the state where the dimple core part 3B is inserted and engaged in the engaging hole 3A formed in the tail side, and the step part 3d formed in the tail side of the dimple core part 3B is abutted against the tail side opening end 3c of the rod tip side rod part 3A, and the insertion and engagement are completed to integrally connect the rod 3. This state is shown in fig. 2 (b).
In addition, the rod tip end of the rod tip side core rod part 3A and the rod tail end of the rod tail side core rod part 3B are formed with the tool locking holes 3e, 3 f.
The rod tip side core rod part 3A and the rod tail side core rod part 3B are separated by installing a hooking and clamping part on the tool clamping holes 3e and 3f and using a drawing air cylinder and the like.
As shown in fig. 4, the rod body 2 at the rod tail side is configured to form an innermost layer 2A, an inner band layer 2B on the outer side thereof, an intermediate sheet layer 2C on the outer side of the inner band layer 2B, and an outer band layer 2D on the outer side thereof. Reinforcing layers 2E are arranged on the rod tip side and the rod tail side at the outer side of the outer band layer 2D.
The innermost layer 2A is set to have a length within a certain range from the rod tip side end, and has an inner circumferential surface on the inner side, and the inner circumferential surface includes a reverse tapered surface 2A having a smaller diameter toward the rod tail side and a forward tapered surface 2b having a larger diameter toward the tail side from the tail side of the reverse tapered surface 2A.
The innermost layer 2A is wound with a prepreg sheet 4 made of glass reinforced fibers over a fixed range between the reverse tapered inner peripheral surface side and the forward tapered inner peripheral surface side.
As shown in fig. 2(c), the prepreg sheet 4 is a prepreg of: the glass reinforcing fibers d are aligned in a direction inclined with respect to the rod axis X, impregnated with epoxy resin or PET resin, and cut into sheets.
The rod tip side end 4a of the prepreg sheet 4 made of glass reinforced fiber is cut in a direction orthogonal to the rod axis X, and the rod tail side end 4b is cut in a state inclined from the direction orthogonal to the rod axis X. The remaining 2 sides form sides parallel to the rod axis X.
In this manner, the tip end side joint portion 2F of the rod body 2 on the rod tail side is formed by the prepreg sheet 4 made of glass reinforced fiber. The reinforcing fibres d form an angle theta with the rod axis X in the range of 45 DEG to < theta < 90 deg. Ideally in the range 50 ° < Θ < 70 °. Therefore, the inclination angle of the surface reinforcing fiber of the rod tail end side joint part 1C of the rod tip side rod body 1 relative to the rod axis X is consistent with the inclination direction.
The structure of the prepreg sheet 4 may be as follows.
(a) The prepreg sheet may be a twill type (バイアス type) sheet in which a sheet in which glass reinforcing fibers d are aligned in a direction inclined with respect to the rod axis X and a sheet aligned in a direction inclined on the opposite side with respect to the rod axis X are superposed.
(b) The prepreg sheet 4 made of glass-reinforced fibers may be formed as follows: the cloth fiber obtained by weaving the glass reinforcing fiber d in a state inclined with respect to the rod axis X and in a state in which the fibers intersect is impregnated with an epoxy resin or a PET resin and cut into a sheet.
(c) The sheet may be configured by changing the glass reinforcing fibers d to carbon reinforcing fibers c.
As shown in fig. 2(d), the rod tip side end 4a of the glass reinforced fiber prepreg sheet 4 cut as described above is wound in a state of being attached to the tip end of the rod tip side core portion 3A of the core rod 3. The prepreg sheet 4 made of glass reinforced fiber is wound in a fixed range over the reverse tapered outer circumferential surface side and the forward tapered outer circumferential surface side with a connection point between the reverse tapered outer circumferential surface of the rod tip side core rod portion 3A and the forward tapered inner circumferential surface of the rod tail side core rod portion 3B as a reference point.
Next, the inner belt layer 2B will be described. As shown in fig. 2(e), a narrow inner prepreg tape 5 is used as the inner tape layer 2B, and a plurality of carbon reinforcing fibers are arranged in parallel in the tape longitudinal direction and impregnated with an epoxy resin or the like to form a prepreg tape.
The inner prepreg tape 5 is wound in a spiral shape from the rod tail side onto the innermost layer 2A of the mandrel 3 to form an inner tape layer 2B.
Next, the intermediate sheet layer 2C is formed. As shown in fig. 3(f), the intermediate sheet layer 2C is formed of a substantially elongated trapezoidal intermediate prepreg sheet 6. The intermediate prepreg sheet 6 is formed by aligning and arranging carbon reinforcing fibers c in parallel and crosswise in the rod circumferential direction and the rod axial direction, then impregnating the sheet with an epoxy resin or the like, and cutting the sheet.
The prepreg sheet 6 is cut in a state where a rod tip side edge 6A and a rod tail side edge 6B are orthogonal to the rod axis X, a winding start edge 6C wound first on the inner tape layer 2B is cut substantially parallel to the rod axis X, and a winding end edge 6D is cut along a straight line which becomes farther from the rod axis X toward the rod tail side. Further, a cut surface 6A obliquely crossing both the tip end side edge 6A and the winding start end edge 6C is formed at the crossing position of the tip end side edge 6A and the winding start end edge 6C orthogonal to the tip end side edge 6A, and the cut surface 6A is formed in a state of being more distant from the rod axis X toward the tip end side edge 6A.
The shape of the rod tip side of the intermediate sheet layer 2C has a cut-out portion due to the cut-out surface 6a because: in close relation to the provision of the innermost layer 2A over a fixed range between the reverse tapered inner peripheral surface side and the forward tapered inner peripheral surface side, when the intermediate sheet layer 2C is wound around the inner band layer 2B, as shown in fig. 3(g), the taper shape of the outer peripheral surface is formed in a state in which the diameter increases toward the tail side.
The structure of the prepreg sheet 6 may be as follows.
(a) The prepreg sheet may be an offset prepreg sheet in which a sheet having reinforcing fibers c aligned in the rod circumferential direction and a sheet having reinforcing fibers aligned in the rod axial direction are stacked.
(b) The reinforcing fibers c may be formed only by a sheet material aligned in the rod circumferential direction.
(c) It may be constituted by only a sheet material in which the reinforcing fibers c are aligned in the rod axis direction.
(d) The rod may be configured by a sheet material formed by knitting reinforcing fibers c in a state inclined with respect to the rod circumferential direction and reinforcing fibers c in a state inclined with respect to the rod axial direction so as to intersect each other.
Next, the outer belt layer 2D will be explained. As shown in fig. 3(h), the outer tape layer 2D is a narrow outer prepreg tape 7 in which a plurality of carbon reinforcing fibers c are arranged in parallel in the tape longitudinal direction and impregnated with an epoxy resin or the like to form a prepreg tape.
The outer prepreg tape 7 is wound in a spiral shape in order from the tip end side of the rod of the intermediate sheet layer 2C wound around the core rod 3, thereby forming an outer tape layer 2D.
The inner prepreg tape 5 and the outer prepreg tape 7 are wound in a spiral shape in a state inclined with respect to the rod axis X, and are wound in opposite directions so as to intersect each other. Therefore, the rod body 2 at the rod tail side can be formed with high strength, especially the rod body with twisting resistance.
The winding start positions of the inner prepreg tape 5 and the outer prepreg tape 7 can be arbitrarily selected from the rod tip side and the rod tail side. In short, the inner prepreg tape 5 and the outer prepreg tape 7 may be wound in opposite directions to each other.
The winding form of the inner prepreg tape 5 and the outer prepreg tape 7 may be a state in which adjacent narrow widths (tape widths) wound in a spiral shape are partially overlapped or closely attached to each other or a state in which a slight gap is left.
After the outer prepreg tape 7 is wound, as shown in fig. 3(h), a reinforcing prepreg 8 having a short length around the core is wound at the tip end and the tail end of the rod. The reinforcing prepreg 8 is a cloth fiber prepreg in which reinforcing fibers c are woven in a crossed state. The reinforcing layer 2E is formed by a reinforcing prepreg 8 disposed at the rod tip end and the rod tail end.
Although not shown, an offset prepreg sheet formed in such a manner that two prepregs in which the reinforcing fibers c are aligned in one direction are prepared and the reinforcing fibers c are overlapped so as to intersect with each other may be used.
After the reinforcing prepreg 8 is wound, a fastening tape is wound on the outer side, the respective mandrels 3 are fired, and the wound fastening tape is peeled off after being taken out, although not shown.
Then, the rod tip side core rod part 3A is drawn out to the rod tip side and the rod tail side core rod part 3B is drawn out to the rod tail side by the air cylinder (not shown) connected through the holes 3e and 3f for tool locking, thereby separating the rod body from the core rod 3. Then, special coating is carried out, and the rod body is cut into a special length to form the rod body.
In this way, even in the rod body having the reverse tapered surface 2a, by adopting the manufacturing method of drawing the rod tip side core rod part 3A to the rod tip side, the smooth inner peripheral surface with a flat resin surface can be obtained without performing the reamer processing and cutting the reinforcing fibers c and d.
As shown in fig. 1, the reinforcing fiber d of the rod tip side prepreg sheet 4 constituting the rod tip side joining part 2F of the rod tip side rod body 2 and the reinforcing fiber C of the rod tip side prepreg sheet 9 constituting the rod tip side joining part 1C of the rod tip side rod body 1 are the same in inclination angle (angle formed by the rod axis X and the reinforcing fiber) with respect to the rod axis X and are constituted so as to draw a spiral in the same direction in the circumferential direction. The pitch of the reinforcing fibers in the axial direction is desirably: in the state that the rod end side junction part 1C of the rod end side rod body 1 is engaged with the rod end side junction part 2F of the rod end side rod body 2, like the external thread and the internal thread, the teeth and the grooves are engaged with each other in the way of overlapping with equal space, but it is not necessary.
The engaging part 2F at the rod end side of the rod body 2 at the rod end side formed as above is combined with the engaging part 1C at the rod end side of the rod body 1 at the rod end side to measure the engaging force at the time of fixing. The results are shown in FIG. 8.
(1) As shown in fig. 8(a), in the state that the rod tip side joining part 2F of the rod tail side rod body 2 and the rod tail side joining part 1C of the rod tip side rod body 1 are loosely combined, a certain amount l is pressed in by the hammer W1The standard bonding state was set to about 10 mm.
(2) Next, as shown in fig. 8(b), a tensile tester 10 is installed at the front end of the rod body 1 at the rod tip side, and a relative angle tester 14 for testing the relative rotation angle of the rod body 2 at the rod tail side and the rod body 1 at the rod tip side in the circumferential direction is installed at the rod tip end position of the rod body 2 at the rod tail side, and the measurement is carried out.
(3) The strong tabling state (fixed state) of the rod end side joining part 2F of the rod end side rod body 2 and the rod end side joining part 1C of the rod end side rod body 1 which are firmly tabling and the loose tabling state (non-fixed state) of the loose tabling are set as the reference state. A loose fitting state can be set when the rotation is about 30 ° (i.e., +30 °) in one direction from the reference state, and a strong fitting state (non-fixed state) can be set when the rotation is about 30 ° (i.e., -30 °) in the opposite direction from the reference state.
(4) Then, the fitting force against the tension was measured in a state rotated from the reference state by +30 ° to-30 °.
(5) In addition, the structure of the product of the present invention is that the winding direction of the reinforcing fiber d, C is the same and the inclination angle (inclination to the axis) theta is 60 deg. in the rod tip side joining part 2F of the rod tail side rod body 2 and the rod tail side joining part 1C of the rod tip side rod body 1. On the contrary, in the case of the conventional product, the rod tip side engaging part 2F of the rod tail side rod body 2 and the rod tail side engaging part 1C of the rod tip side rod body 1 are inclined to the axis X in the direction (inclined to the axis) Θ of 0 °.
(6) The results of the measurement as described above are shown in fig. 8 (c). From the test results, it can be seen that the product according to the present invention shows a fitting force (138.6N) of 2 times or more of the existing product in the strong fitting state, and the rod body 1 at the tip side can be separated from the rod body 2 at the tail side by using a drawing force of approximately 6 times of the existing product in the loose fitting state. The relative rotation torque required for the relative rotation when switching from the reference state to the strong fitting state by the relative rotation also requires a torque approximately 1.5 times as large as that of the conventional product, and the switching to the strong fitting state can be reliably sensed.
Next, an instruction mark which becomes an assist force when an operation of switching from the reference state to the strong fitting state (fixed state) and the loose fitting state (non-fixed state) is performed will be described.
As shown in fig. 11, indication marks 13 are provided on the outer peripheral surface of the rod end side joining part 1C of the rod tip side rod body 1 and the rod tip side joining part 2F of the rod tip side rod body 2, and the indication marks 13 indicate that the rod tip side joining part 2F and the rod tip side joining part 1C are set to a specific relative position relationship.
As the indicator 13, a black dot is used as shown in fig. 11 (a). Alternatively, the thin lines 13A may be extended from the black spot 13 toward the opposite sides, and the thin lines 13A may be formed to be identical to each other at the tip end of the rod body 2 at the rod tail side.
As a case where the indication mark 13 indicates that the specific relative positional relationship is set, the following case is exemplified.
(a) The indicator 13 indicates a strongly fitted state (fixed state).
(b) The indication mark 13 indicates a loose fitting state (unfixed state).
(c) The indication mark 13 indicates a reference state.
The indication mark 13 is a black dot, but various symbol patterns and the like may be used.
The simple structure of the black dots 13 is shown in the above case, but as shown in fig. 11(B), an arrow 13B or an explanatory character 13C indicating the rotational operation direction may be added.
Thereby, the operation becomes easier. As the explanatory characters, a lock (with brackets) indicating a fixed state and a release (with brackets) indicating an unfixed state are added.
Here, the circle 13 indicates a reference state, and a fixed state can be assumed by a relative rotation in the locking direction and a twisting operation. Conversely, if the rotation is performed in a loosening direction, the rotation may be performed in a twisting manner to assume an unfixed state.
(different embodiment from the first embodiment)
The rod body 1 at the tip end side of the rod may be formed of a cylindrical body instead of a solid rod body.
That is, the carbon fiber reinforcing fibers c (or the glass reinforcing fibers d) are aligned in one direction, and the aligned reinforcing fiber groups are impregnated with a thermosetting resin (or a thermoplastic resin) such as an epoxy resin to form a prepreg sheet.
As shown in fig. 9(a), the prepreg sheets 10A and 10B are cut into a substantially trapezoidal shape and then wound around the mandrel bar 3 in a plurality of pieces. Here, a prepreg sheet 10A in which the reinforcing fibers c and d are aligned in the circumferential direction and a prepreg sheet 10B in which the reinforcing fibers c and d are aligned in the axial direction are wound around the mandrel 3.
Then, the rod end side joining part 1C of the rod tip side rod body 1 to be fitted to the rod tip side joining part 2F of the rod tip side rod body 2 is formed by grinding in the same manner as the solid rod body. In the centerless grinder C shown in FIG. 5(C), as shown in FIG. 9(C), a rod tail side part 1B is arranged on the rod tail side of a rod tip side part 1A formed as a forward tapered surface having a larger diameter toward the rod tail side, and the rod tail side part 1B is formed as a reverse tapered surface having a smaller diameter toward the rod tail side.
As shown in fig. 9(c) and (d), a carbon fiber rod tail end side prepreg sheet 9 is wound from the rear end of the rod tip side part 1A to the whole rod tail side part 1B. The prepreg sheet 9 at the rod tail end side is cut into a trapezoidal shape having a thickness of 2 to 3mm/1000 and being wider toward the rod tip side, and is wound in 3 layers. In the wound state, the direction of the reinforcing fibers c of the prepreg sheet 9 at the rod tail end side is aligned in a spiral shape in a direction inclined with respect to the rod axis X.
As shown in fig. 9(d), the rod end side rod body 1 with 3 layers of winding rod end side prepreg sheet 9 is baked, the rod end side outer circumference of the rod end side rod body 1 with the resin and the reinforced fiber C integrated and solidified is surface ground by the centerless grinder C shown in 5(C), the required surface precision and inclination are ensured, thereby forming the rod end side joint part 1C of the rod end side rod body 1. As shown in figure 9(e), the reinforcing fibres c make an angle Θ with the rod axis X in the range 45 ° ≦ Θ < 90 °. Ideally in the range 50 ° < Θ < 70 °.
As the reinforcing fibers constituting the prepreg, specifically, glass fibers, aramid fibers, alumina fibers, and the like can be used in addition to carbon fibers, and as the resin, thermosetting resins such as phenol resins and polyester resins, and thermoplastic resins such as pv (e) can be used in addition to epoxy resins. The prepreg may be formed by impregnating a resin with a woven fabric formed by weaving reinforcing fibers.
Next, another embodiment structure of the rod body 2 on the rod tail side will be described. In the first embodiment, the rod body 2 on the rod tail side is formed by using two mandrel rods 3A and 3B which can be connected or separated, but here, the rod body 2 on the rod tail side is manufactured by using a single mandrel rod 3.
As shown in fig. 10(a), in order to form the rod tip side joint part 2F of the rod body 2 at the rod tail side, the carbon fiber rod tip side prepreg sheet 11 is wound. The prepreg sheet 11 at the rod tip end side is cut into a trapezoidal shape having a thickness of 2 to 3mm/1000 and being wider toward the rod tail side, and is wound in 3 layers. In the wound state, the direction of the reinforcing fibers c of the prepreg sheet 11 at the tip end side of the rod is aligned in a spiral shape in a direction inclined with respect to the rod axis X.
As shown in fig. 10(B), 3 prepreg sheets 12A, 12B, and 12C are wound around the rod preform around which the rod tip side prepreg sheet 11 is wound. The 3 prepreg sheets include 3 sheets, from the inside, an inner prepreg sheet 12A in which the reinforcing fibers C are aligned in the circumferential direction, an intermediate side prepreg sheet 12B in which the reinforcing fibers C are aligned in the axial direction, and an outer prepreg sheet 12C in which the reinforcing fibers C are aligned in the circumferential direction.
As shown in fig. 10(C), the rod preform around which 3 prepreg sheets 12A, 12B, 12C are wound is subjected to a firing treatment together with the mandrel 3, and the mandrel 3 is depoling. After firing, the inner circumferential surface of the rod tip side of the rod body 2 at the rod tail side where the resin is integrated with the reinforcing fiber c and solidified is ground by the reamer R as shown in fig. 10(d) and (e) to ensure the required surface finish and inclination, thereby forming the rod tip side engaging portion 2F of the rod body 2 at the rod tail side. As shown in figure 10(f), the reinforcing fibres c make an angle Θ with the rod axis X in the range 45 ° ≦ Θ < 90 °. Ideally in the range 50 ° < Θ < 70 °.
Instead of the prepreg sheet 11 on the rod tip end side, a thick prepreg tape may be wound.
(second embodiment)
Although not shown, as shown in the first embodiment, it is also possible to wind the carbon fiber prepreg sheet having a short axial core length on one of the outer circumferential surface of the rod end side of the rod body 1 on the rod end side and the inner circumferential surface of the rod tip side of the rod body 2 on the rod tip side, and to arrange a non-woven fabric on the other of the outer circumferential surface of the rod end side of the rod body 1 on the rod tip side and the inner circumferential surface of the rod tip side of the rod body 2 on the rod tip side, thereby constituting the rod tip side joint portion 1C of the rod body 1 on the rod tip side and the rod tip side joint portion 2F of the rod body 2 on the rod tip side.
The nonwoven fabric is not in the form of a sheet obtained by aligning the reinforcing fibers c and then impregnating the fibers with a resin, but is formed into a fabric by bonding or bonding the fibers by heat, mechanical action, or chemical action, and the orientation of the fibers is random.
As shown in fig. 10(b), the prepreg sheet has the thickness, vertical and horizontal width and is wound in 3 layers when wound on either rod end side joining part 1C of the rod tip side rod body 1 or rod tip side joining part 2F of the rod tip side rod body 2.
With such a structure, if the rod body 1 at the rod tip side and the rod body 2 at the rod tail side are relatively rotated toward one direction, the rod body 1 at the rod tip side further enters into the rod body 2 at the rod tail side, thereby restraining the joint parts 1C, 2F from firmly fastening or disjointing. On the other hand, if the rod body 1 at the rod tip side moves in the direction far from the rod body 2 at the rod tail side if relatively rotating in the opposite direction, the fixed state of the rod body 1 and the rod body 1 at the rod tip side is relaxed, and the rod body 1 is separated from the rod body 2 at the rod tail side, thereby easily performing the collecting process.
(third embodiment)
Here, the present invention is applied to the swing rod B. In the rod B having 5to 6 rod bodies at the rod tail side from the rod body at the rod tip side, as shown in fig. 6, in the case of taking out the rod body 1 at the rod tip side from the rod body 2 at the rod tail side and setting it to a fishing state, the rod tail end side engaging portion 1C of the rod body 1 at the rod tip side and the rod tip end side engaging portion 2F of the rod body 2 at the rod tail side are in an engaged state. In this case, the inclination direction and orientation of the reinforcing fibers C and d exposed on the surface of the rod tail end side joint part 1C of the rod tip side rod body 1 with respect to the rod axis X are the same as the inclination direction and orientation of the reinforcing fibers C and d exposed on the surface of the rod tip end side joint part 2F of the rod tail side rod body 2 with respect to the rod axis X.
Furthermore, although not shown, the reinforcing fibres c, d form an angle Θ with the rod axis X in the range 45 ° ≦ Θ < 90 °. Ideally in the range 50 ° < Θ < 70 °.
With such a structure, if the rod body 1 at the rod tip side and the rod body 2 at the rod tail side are relatively rotated toward one direction, the rod body 1 at the rod tip side is further protruded from the rod body 2 at the rod tail side, thereby restraining the phenomenon that the joint parts 1C and 2F are firmly fastened or disconnected. On the other hand, if the rod bodies 1 at the rod tip side are relatively rotated in the opposite directions, respectively, the rod bodies 1 at the rod tip side enter the rod body 2 at the rod tail side, the consolidation state of the rod bodies 1 at the rod tip side is mild, and the rod bodies 1 at the rod tip side enter the rod body 2 at the rod tail side, so that the picking up treatment can be easily performed.
(fourth embodiment)
Here, as shown in fig. 7, the present invention is applied to a dimple-connected rod C. The core material with dimple 1c is extended from the rod body at the tip side of the rod 1 to the rod body at the rear side of the rod, and the rod body as shown in the first embodiment is used as the rod body 2 at the rear side of the rod. As shown in fig. 5(d), the outer peripheral surface of the dimple core material 1c is formed into a reverse tapered surface having a diameter smaller toward the rod tail side, and a carbon fiber-made rod tail side prepreg sheet 9 is wound around the inclined surface. The prepreg sheet 9 at the rod tail end side is cut into a trapezoidal shape having a thickness of 2 to 3mm/1000 and being wider toward the rod tip side, and is wound in 3 layers. In the wound state, the direction of the reinforcing fiber c of the prepreg sheet 9 at the rod tail end side is aligned in a spiral shape in a direction inclined with respect to the rod axis X.
Similarly to the above, the dimple core material 1C of the wound 3 layers of rod tail side prepreg sheet 9 was subjected to firing treatment, and the outer peripheral surface of the resin and the reinforcing fiber C integrally solidified was subjected to surface grinding by the centerless grinder shown in fig. 5(C) to form the dimple core material 1C while securing the required surface accuracy and inclination, and as shown in fig. 7, the dimple core material 1C was protruded from the rod tail side end of the rod tip side rod body 1 to form the joint portion 1C. The reinforcing fibres c make an angle theta with the rod axis X in the range of 45 DEG to < theta < 90 deg. Ideally in the range 50 ° < Θ < 70 °.
With such a structure, if the rod body 1 at the rod tip side and the rod body 2 at the rod tail side are relatively rotated toward one direction, the recess core material 1C of the rod body 1 at the rod tip side further enters the rod body 2 at the rod tail side, thereby suppressing the phenomena of firm fastening or dislocation of the joint parts 1C and 2F. On the other hand, if the rod bodies 1 are rotated in the opposite directions, the rod bodies 1 are separated from the rod bodies 2, and the fixed state of the rod bodies is relaxed, so that the rod bodies can be easily separated.
(other embodiments)
But also to retro-relay rods. In fig. 1(a), the rod body 1 at the tip end side of the rod and the rod body 2 at the tail end side of the rod are exchanged to form a reverse-combination rod. That is, the rod tip end of the rod body 2 at the rod tail side is formed as a tapered outer circumferential surface having a diameter smaller toward the rod tip side, and the rod tail end of the rod body 1 at the rod tip side is formed as a tapered inner circumferential surface having a diameter larger toward the rod tail side.
Industrial applicability of the invention
The present invention provides a fishing rod joint part structure, which can restrain the rod body at the rod tip side from separating from the rod body at the rod tail side even when casting a fishing group during fishing operation, and can accurately separate the rod body at the rod tip side from the rod body at the rod tail side when picking up treatment is carried out after fishing.
Description of the symbols:
rod body at side of rod tip
1A rod tip side part
1B rod tail side part
1a inverted conical surface
1C rod tail end side joint part
2 rod body at rod tail side
2A innermost layer
2B inner tape layer
2C intermediate sheet layer
2D outer tape layer
2E reinforced layer
2F rod tip end side joint part
2a inverted conical surface
2b right conical surface
3 core rod
3A rod tip side core rod part
Side core rod part of 3B rod tail
3a engaging hole
3b dimple core
3c end side open end
3d step difference part
4 prepreg sheet made of glass-reinforced fiber
4a rod tip side end edge
5 inner prepreg tape
6 intermediate prepreg sheet
6A rod tip side end edge
6B rod tail side end edge
6C winding start end edge
6D end of winding edge
6a cut-off surface
7 outer prepreg tape
8 reinforced prepreg
Prepreg sheet material at tail end side of 9 rod
10 tensile tester
11 rod tip end side prepreg sheet
12A, 12B, 12C prepreg sheet
13 indicating mark
13A fine wire
13B arrow head
13C descriptive text
14 relative goniometer
A parallel rod
The angle formed by the theta-shaped reinforcing fiber and the rod axis
R reamer
Axis of X rod
W hammer
C carbon reinforcing fiber
D, glass reinforced fiber.
