JP2012040258A - Method for manufacturing endoscopic component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing an endoscopic component having metallic linear members fixed therein, which can stabilize the fixing strength of the linear members and improve manufacturing efficiency.SOLUTION: The method for manufacturing an endoscopic component includes: a first step of disposing a part of a wire 3 in a cavity of a die and disposing the other part of the wire 3 to the outside of the cavity; and a second step of injecting molten metal material to be metallic glass into the cavity, cooling the molten metal at a critical cooling speed or more to solidify the molten metal, and forming a molded product made of metallic glass which is integrated with the linear members.

Description

  The present invention relates to a method for manufacturing an endoscope part.

2. Description of the Related Art Conventionally, in an endoscope, a bending portion is connected to a distal end portion, and the direction of the distal end portion is changed or the position is moved by bending the bending portion with a proximal-side operation unit. For this reason, a plurality of wires are fixed to the proximal end side of the distal end portion of the endoscope, and the plurality of wires are guided to the operation portion through the inside of the bending portion and the insertion portion, and used as a wire operation mechanism of the operation portion It is connected.
For example, Patent Document 1 discloses an endoscope having an endoscope part to which such a wire is fixed at a distal end portion, a bending portion that can be bent at an insertion portion, and a distal end connected to the distal end of the bending portion. An endoscope having a bending operation wire fixed to the distal end and pulling the bending portion, wherein the bending operation wire and the distal end of the insertion portion are placed in a vacuum environment or inactive. An endoscope characterized by being fixed by brazing in a gas environment is described.
As another technique for fixing the wire to the distal end portion of the endoscope, a technique for fixing the wire by welding such as laser welding is known.

JP 2001-149307 A

However, the conventional method for manufacturing an endoscope component as described above has the following problems.
When manufacturing an endoscope component by fixing a wire to a metal member at the tip by brazing, laser welding, or the like as in the prior art such as the technique described in Patent Document 1, the end of the wire to be fixed Must be accurately positioned on the metal member to be fixed and held in a fixed position during brazing and welding operations. However, since the wire is rich in flexibility and thin in diameter, there is a problem in that it is not easy to stably arrange at a fixed position and workability is poor.
In recent years, endoscopes have been remarkably reduced in size and diameter, and accordingly, the metal member to be fixed has been reduced in size and the wire has also been reduced, and thus the production efficiency tends to be further deteriorated.
Further, even if the work is performed with the position of the wire accurately fixed, brazing and welding are likely to cause variations in the fixing strength depending on the processing conditions.

  The present invention has been made in view of the above-described problems, and can stabilize the fixing strength of the linear member in the endoscope component to which the metal linear member is fixed, and can improve the manufacturing efficiency. An object of the present invention is to provide a method for manufacturing an endoscope part that can be improved.

  In order to solve the above-described problems, in the method for manufacturing an endoscope component according to the present invention, a part of a linear member is disposed in a cavity of a mold, and the other part of the linear member is disposed outside the cavity. A molten metal of a material that becomes a metal glass is injected into the cavity, and the molten metal is cooled at a critical cooling rate or more to solidify the molten metal, and is integrated with the linear member. A second step of forming a molded metal glass molded product.

  In the present invention, a position restricting part for restricting a position of the linear member in the cavity is provided in the cavity of the mold, and in the first step, the line restricting part is provided with the line. It is preferable to place the shaped member in contact with each other in the cavity of the mold.

  Further, in the endoscope part manufacturing method of the present invention, the mold is provided with a linear member insertion portion for allowing the inside and the outside of the cavity to communicate with each other and for inserting the linear member, In the first step, it is preferable that the linear member is disposed in the cavity by inserting the linear member through the linear member insertion portion.

Moreover, in the manufacturing method of the endoscope component having the linear member insertion portion of the present invention, the linear member insertion portion is provided in at least two places, and in the first step, one linear member is provided. The linear member insertion portions provided at two locations are respectively inserted, the intermediate portion of the one linear member is disposed in the cavity, and both ends of the single linear member are external to the cavity. It is preferable to arrange | position to.

  In the endoscope part manufacturing method having a position restricting portion according to the present invention, the position restricting portion is preferably a groove provided on a cavity forming surface of the mold constituting the cavity.

  In the endoscope part manufacturing method having the position restricting portion of the present invention, it is preferable that the position restricting portion is a protrusion provided on a cavity forming surface of the mold constituting the cavity.

In the method of manufacturing an endoscope component having a position restricting portion according to the present invention, the position restricting portion includes an insertion holding member having an opening through which the linear member can be inserted, and the mold constituting the cavity. Formed to protrude from the cavity forming surface,
In the first step, it is preferable that the linear member is disposed in the cavity by inserting the linear member through the opening of the insertion holding member and holding the linear member in the insertion holding member.

  In the method for manufacturing an endoscope part having an insertion holding member according to the present invention, it is preferable that a part of the insertion holding member is disposed so as to protrude outside the cavity.

  Further, in the method for manufacturing an endoscope part having an insertion holding member according to the present invention, the mold is a core mold that forms the shape of the inner surface of the molded product by a plurality of mold members that are detachable from each other. And the plurality of mold members of the core mold part include a position restriction mold member having the position restriction part and a mold release direction in which the position restriction mold member is released from the molded product. A fixed mold member for fixing the position of the position regulating mold member, and after performing the second step, the fixed mold member is removed from the core mold part, It is preferable that the position regulating mold member is moved to the fixed mold member side to release the position regulating mold member from the molded product.

  In the method of manufacturing an endoscope part having a core mold part, a position regulating mold member, and a fixed mold member according to the present invention, the core mold part has a cylindrical outer shape, and the fixed mold It is preferable that the mold member has a rectangular parallelepiped shape and is provided so as to be able to be pulled out in a direction intersecting with the releasing direction of the position regulating mold member.

  According to the method for manufacturing an endoscope component of the present invention, a linear member is arranged in a cavity of a mold, and a molten metal material is injected into the cavity to be integrated with the linear member. Since it is possible to manufacture an endoscope part in which a molded product of metal glass is formed and the linear member is fixed by integral molding, it is possible to stabilize the fixing strength of the linear member in the endoscope part and to manufacture it. There is an effect that the efficiency can be improved.

It is the typical perspective view which shows an example of the endoscope component manufactured by the manufacturing method of the endoscope component which concerns on the 1st Embodiment of this invention, and the bottom view of the A view. It is a typical perspective view explaining the process of the manufacturing method of the endoscope component which concerns on the 1st Embodiment of this invention. It is a typical perspective view explaining the process after FIG. It is BB sectional drawing in FIG. It is a side view of the C view in FIG. It is DD sectional drawing in FIG. It is EE sectional drawing in FIG. 3, and the bottom view of F view. It is a typical perspective view explaining the process after FIG. It is typical sectional drawing which shows the example of the assembly using the endoscope component manufactured using the manufacturing method of the endoscope component which concerns on the 1st Embodiment of this invention. It is the typical perspective view which shows an example of the endoscope component manufactured by the manufacturing method of the endoscope component which concerns on the 1st modification of the 1st Embodiment of this invention, and the bottom view of the G view. The typical perspective view which shows the structure of the metal mold | die member used for the manufacturing method of the endoscope component which concerns on the 1st modification of the 1st Embodiment of this invention, its HH sectional drawing, and the partial expansion of J view FIG. It is typical sectional drawing which shows the structure of the principal part of the metal mold | die member used for the manufacturing method of the endoscope component which concerns on the 2nd modification of the 1st Embodiment of this invention. The typical perspective view which shows the structure of the metal mold | die member used for the manufacturing method of the endoscope component which concerns on the 3rd modification of the 1st Embodiment of this invention, the top view of the K view, and the partial expansion of the L view FIG. It is the typical perspective view which shows an example of the endoscope component manufactured by the manufacturing method of the endoscope component which concerns on the 2nd Embodiment of this invention, and the bottom view of the N view. It is a typical front view which shows the penetration holding member used for the manufacturing method of the endoscope component which concerns on the 2nd Embodiment of this invention, and its modification (4th modification, 5th modification). It is a typical perspective view explaining the process of the manufacturing method of the endoscope component which concerns on the 2nd Embodiment of this invention. It is PP sectional drawing in FIG. 16, and QQ sectional drawing. It is a typical disassembled perspective view which shows an example of the endoscope component manufactured by the manufacturing method of the endoscope component which concerns on the 3rd Embodiment of this invention. It is the top view of R view in FIG. 18, and the top view at the time of the assembly. It is TT sectional drawing in FIG. 19, and the side view of the U view. It is typical sectional drawing of the metal mold | die used for the manufacturing method of the endoscope component which concerns on the 3rd Embodiment of this invention, and its VV sectional drawing. It is typical sectional drawing explaining the process of the manufacturing method of the endoscope component which concerns on the 3rd Embodiment of this invention. It is a typical fragmentary sectional view which shows the principal part of an example of the endoscope using the endoscope component manufactured by the manufacturing method of the endoscope component which concerns on the 3rd Embodiment of this invention. It is a typical side view showing composition of an endoscope part manufactured by a manufacturing method of an endoscope part concerning a modification (sixth modification) of a 3rd embodiment of the present invention (U of Drawing 20). Corresponding to vision). It is a typical perspective view which shows the structure of the endoscope component manufactured using the manufacturing method of the endoscope component which concerns on the 4th Embodiment of this invention. It is a typical disassembled perspective view of the metal mold | die used for the manufacturing method of the endoscope component which concerns on the 4th Embodiment of this invention. It is a top view of W view in FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In all the drawings, even if the embodiments are different, the same or corresponding members are denoted by the same reference numerals, and common description is omitted.

[First Embodiment]
The method for manufacturing an endoscope component according to the first embodiment of the present invention will be described together with the shape of the endoscope component manufactured by this manufacturing method.
Fig.1 (a) is a typical perspective view which shows an example of the endoscope component manufactured by the manufacturing method of the endoscope component which concerns on the 1st Embodiment of this invention. FIG.1 (b) is a bottom view of the A view in Fig.1 (a). FIGS. 2A, 2B, and 2C are schematic perspective views illustrating steps of the method for manufacturing an endoscope component according to the first embodiment of the present invention. FIGS. 3D, 3E, and 3F are schematic perspective views illustrating a process after FIG. 2C. 4 is a cross-sectional view taken along line BB in FIG. FIG. 5 is a side view as seen from C in FIG. FIG. 6 is a cross-sectional view taken along the line DD in FIG. FIGS. 7A and 7B are a cross-sectional view taken along line EE in FIG. FIGS. 8G, 8 </ b> H, and 8 </ b> I are schematic perspective views for explaining a process after FIG.
In addition, since each figure is a schematic diagram, the dimension relationship and shape are exaggerated (the following drawings are also the same).

A wire-equipped tubular part 1 shown in FIGS. 1A and 1B is an example of an endoscope part manufactured by the endoscope part manufacturing method of the present embodiment.
The wire-equipped tubular part 1 is a member that can be used, for example, at the distal end portion of an endoscope. With.

The shape of the metal tube member 2 is a tubular member having an outer peripheral surface 2a and an inner peripheral surface 2b made of a cylindrical surface provided coaxially, thereby forming a cylindrical shape with a constant thickness t. The dimensions of the outer diameter of the outer circumferential surface 2a is the diameter _{d 1,} the dimensions of the inner diameter of the inner circumferential surface 2b has a diameter _{d 2 (however, d} 2 <d _1). Therefore, t = (d ₁ −d ₂ ) / 2.
In the following, unless there is a possibility of misunderstanding, when expressing a direction in a cylindrical or columnar member, the direction along the central axis is “axial direction” based on the cylindrical or columnar shape, and the central axis is circulated. The direction is referred to as “circumferential direction”, and the radial direction passing through the central axis on a plane orthogonal to the central axis is referred to as “radial direction”.
The thickness t of the metal tube member 2 is at least larger than the outer diameter of the wire 3. However, although not shown in particular, concave holes are formed in a part of the inner peripheral surface 2b by projections 8a, 8b, and 8c provided in the core assembly 7 to be described later. Is uneven.

One end of the metal tube member 2 is formed with a front end surface 2c formed of a plane orthogonal to the axial direction. The other end of the metal tube member 2 has a base end face 2d formed of a plane parallel to the tip end face 2c, and a protrusion protruding in a piece along the cylindrical surface along the axial direction from two places in the base end face 2d in the circumferential direction. 2e are formed.
The distance between the distal end surface 2c and the proximal end surface 2d is a length h.
The protrusion 2e is engaged with a recess provided in another endoscope component to perform positioning or rotation prevention in the circumferential direction. If such fitting and circumferential positioning or rotation prevention are possible, the shape of the protrusion 2e is not limited to a single shape, and may be, for example, a prismatic shape or a circle depending on the shape of the concave portion of the mating counterpart. Appropriate protrusion shapes such as a columnar shape, a rod shape, a mountain block shape, and a U-shaped block shape can be employed.
In the present embodiment, each projection 2e is opposed in the radial direction, it has a rectangular shape having a width w ₁ as viewed from the radial direction. Therefore, each side surface 2f in the circumferential direction of the protrusion 2e is substantially orthogonal to the base end surface 2d of the outer peripheral surface 2a, and the tip end surface in the axial direction of the protrusion 2e is a plane parallel to the base end surface 2d.
Moreover, the thickness of each protrusion 2e is the same as the thickness between the outer peripheral surface 2a and the inner peripheral surface 2b. That is, each protrusion 2e has a cylindrical surface in which the outer surface and the inner surface in the radial direction are aligned with the outer peripheral surface 2a and the inner peripheral surface 2b, respectively.

The material of the metal tube member 2 is made of an amorphous alloy known as so-called metal glass.
Metallic glass is an amorphous alloy in which the glass transition point is clearly observed when the temperature is raised, and the temperature range of the supercooled liquid region between the glass transition point and the crystallization temperature is 20K or more. That is.
Examples of the material of the metallic glass include a zirconium (Zr) based alloy, an iron (Fe) based alloy, a titanium (Ti) based alloy, a magnesium (Mg) based alloy, and the like.
Metallic glass melts a metal base material having a constant composition to form a melt of the base material alloy, and the molten metal is cooled below the critical transition rate of the base material alloy to below the glass transition point of the base material alloy. It is formed by making it amorphous by cooling.
Specifically, for example, a composition (atm%) _is able examples of such _{Zr 55 Cu 30 Al 10 Ni 5} , Zr 60 Cu 20 Al 10 Ni 10. Since these amorphous alloy materials are mainly composed of Zr, they are excellent in mold transferability and can be easily formed into complex shapes. Moreover, since nickel (Ni) is added, these are excellent also in chemical resistance.
For example, an amorphous alloy material mainly composed of titanium (Ti) is also suitable. For example, Ti ₄₀ Zr ₁₀ Cu ₃₆ Pd ₁₄ can be mentioned. This material is particularly excellent in biocompatibility, and is a material suitable for an endoscope part used in direct contact with the human body.

The four wires 3 are metal linear members for transmitting a driving force in two axial directions by the operation unit in order to perform an operation of moving the tip of the endoscope or changing the direction of the endoscope. is there.
Each wire 3 is integrally formed with the metal tube member 2 and is fixed between the outer peripheral surface 2 a and the inner peripheral surface 2 b of the metal tube member 2. The wire 3 of the present embodiment extends in a direction orthogonal to the base end surface 2d at least in the vicinity of the base end surface 2d.
The position on the base end face 2d from which the four lines of wires 3 are extended is a position that divides the metal tube member 2 into four equal parts in the circumferential direction. The protrusions 2e are arranged symmetrically with respect to the diameter along the opposing direction of the protrusions 2e.

  The wire 3 may be a stranded wire or a single wire. The material of the wire 3 is not particularly limited as long as it can be integrally formed with the metal glass constituting the metal tube member 2. For example, a stainless steel wire such as SUS304, a super-elastic nickel-titanium alloy, a tungsten wire, or the like can be used.

  In the manufacturing method of the endoscope component of this embodiment for manufacturing the tubular component 1 with such a configuration, a part of the wire 3 is disposed in the cavity of the mold, and the other part of the wire 3 is disposed in the cavity. The molten metal of the material that becomes the metal glass is injected into the cavity in the first step to be arranged outside, and the molten metal is cooled at a critical cooling rate or more to solidify the molten metal and integrated with the wire 3. A second step of forming a molded article of metal glass.

In the first process of the present embodiment, the shape of the metal tube member 2 is formed in the process of assembling the mold 4 including the core mold part 5 and the outer frame mold member 10 as shown in FIG. The wires 3 are arranged in the cavity S region.
First, in the first step, the base mold member 6 (mold member) shown in FIG. 2A and the core assembly 7 (mold member) shown in FIG. The mold part 5 is formed.
In the following description, as an example, it is assumed that the base mold member 6 is disposed on a horizontal plane in a state where the core mold part 5 faces the core assembly 7 upward.

The core mold part 5 is a mold member that constitutes a cavity molding surface that contacts at least a molten metal made of a material that forms a metal glass and forms the shape of the surface of the metal tube member 2, for example, outer mold members 7A and 7B described later. 7C and 7D are made of a metal material having a thermal conductivity that allows the molten metal to be rapidly cooled and cooled at a cooling rate equal to or higher than the critical cooling rate. For example, stainless steel or oxygen-free copper can be used.
The material of a mold member that does not come into contact with the molten metal, for example, a core mold member 7E described later, is not particularly limited, and an appropriate metal material can be adopted.

Here, the shape of the core mold part 5 will be described.
The base mold member 6 of the core mold part 5 is a substantially columnar block-shaped member having a side surface 6 a formed of a cylindrical surface having the same diameter d ₁ as the outer diameter of the outer peripheral surface 2 a of the metal tube member 2.
At one end in the axial direction of the base mold member 6 (upper end in FIG. 2A), a base end forming surface 6d, which is a mold surface for molding the base end surface 2d of the metal tube member 2, is formed. It is formed as a plane orthogonal to the central axis.
At the center of the proximal end forming surface 6d, the core assembly to fit a three-dimensional 7, the core mounting portion 6c consisting dimensions as circular holes of the same diameter d ₂ of the inner diameter of the inner circumferential surface 2b of the metal tube member 2 Is provided.
The hole depth of the core mounting portion 6c is such that when the core assembly 7 is fitted, the height from the base end forming surface 6d to the upper surface of the core assembly 7 is slightly larger than the length h. Set to.

Although not particularly shown, the core attaching portion 6c is provided with a bolt insertion hole for fixing the inserted core assembly 7 with a fixing bolt or the like. Moreover, positioning shapes, such as an uneven | corrugated | grooved part for positioning the fitting position of the core assembly 7 in the circumferential direction of the core attaching part 6c, may be formed.
In order to form each projection 2e of the metal tube member 2 at a position that bisects the circumferential direction of the base end forming surface 6d, a concave groove portion 6e having a rectangular cross section is provided penetrating in the radial direction.
In the side surface 6a, a wire guide groove 6b having a U-shaped cross section orthogonal to the axial direction penetrates in the thickness direction of the base mold member 6 along the axial direction at a position that divides the circumferential direction into four equal parts. It is provided to do.
The groove width and the groove depth of the wire guide groove 6 b are such that the wire 3 can be inserted and are approximately equal to the outer diameter of the wire 3.
Although not particularly illustrated, the side surface 6a is provided with a fixing structure for fixing the position of an outer frame mold member 10 to be described later. As an example of the fixing structure, a protrusion protruding to the side of the side surface 6a so as to support the outer frame mold member 10 from below may be used. When fixing with a fixing bolt, a female screw for screwing the fixing bolt is used. Department may be used.

As shown in FIGS. 2B and 4, the core assembly 7 of the core mold part 5 has the outer peripheral mold members 7A and 7B, the core mold member 7E, and the outer peripheral mold members 7C and 7D attached and detached. can assembled with a substantially cylindrical block having a diameter d ₂ is formed, detachably by the cylindrical block on one end side connection (bottom end side) is a disc of diameter d ₂ blocks 7F (mold member) It is a linked assembly. Thus, core assembly 7 constitute a substantially cylindrical block also having a diameter d ₂ as a whole.
The outer peripheral mold members 7A, 7B, 7C, and 7D (hereinafter may be collectively referred to as “outer peripheral mold members 7A to 7D”), the core mold member 7E, and the connecting block 7F are respectively fixed bolts 9 Are connected by
Although not particularly illustrated, the connecting block 7F is appropriately provided with a female thread portion for fixing the core assembly 7 with the base mold member 6 and fixing bolts.

In the circumferential direction of the core assembly 7, the outer peripheral mold members 7A to 7D surround the core mold member 7E and are arranged in the order of the outer peripheral mold members 7A, 7C, 7B, and 7D.
Then, when the core assembly 7 is inserted into the core mounting portion 6c of the base mold member 6 and assembled, the outer peripheral mold members 7A and 7B are respectively positioned so as to oppose one wire guide groove 6b in the radial direction. The outer peripheral mold members 7C and 7D are respectively disposed at positions that are opposed to each other in the radial direction in the groove 6e and the wire guide grooves 6b that are different from the outer peripheral mold members 7A and 7B.

As shown in FIG. 2B, the outer peripheral mold member 7 </ b> A is an elongated block-like member extending in the axial direction to constitute a part of the cylindrical outer peripheral surface of the core assembly 7.
The cross-sectional shape orthogonal to the axial direction of the outer peripheral mold member 7A has a rectangular shape composed of a long side having a length w ₂ that is about one third of the diameter d ₂ and a short side shorter than this long side. One of the long sides has a shape protruding in an arc shape having a diameter d _2, i.e. the D-shape. Thus, the outer peripheral mold member 7A has a mold surface 7a composed of a cylindrical surface of diameter d ₂ (cavity formation surface).
Mold assembly surface 7i are two sides which are adjacent in the circumferential direction of the mold surface 7a, the distance is a parallel plane spaced by a length w _2, the outer peripheral mold member 7C during assembly, 7D and contact with the surface It has become. A mold assembly surface 7g, which is a side surface facing the mold surface 7a, is a surface that contacts the core mold member 7E during assembly.
Of the two planes adjacent to the mold surface 7a in the axial direction, the lower surface that comes into contact with the connecting block 7F at the time of assembly is a female screw for screwing a fixing bolt 9 for connecting to the connecting block 7F as shown in FIG. A portion 7f is provided.

On the mold surface 7a of the outer peripheral mold member 7A, the metal tube member 2 protrudes outward from the mold surface 7a at a position close to the connecting block 7F in the axial direction when assembled. A protruding portion 8c (position restricting portion) is provided.
The axial position of the protruding portion 8 c is above the base end forming surface 6 d when the core assembly 7 is assembled to the base mold member 6.
In the present embodiment, as shown in FIG. 2B, the circumferential position of the protruding portion 8c is the center of the circumferential mold member 7A in the circumferential direction of one wire guide groove 6b of the base mold member 6. When matched to the position, the position is slightly shifted from the wire guide groove 6b toward the outer peripheral mold member 7C.
The shape of the protrusion 8c should be a shape that can be released when the outer peripheral mold member 7A is moved radially inward with the radial direction parallel to the mold assembly surface 7i as the release direction and released from the molded product. In this case, an appropriate shape can be adopted. In the present embodiment, as an example, a cylindrical pin parallel to the mold release direction is employed.

  The outer peripheral mold member 7B is a member having the same shape as the outer peripheral mold member 7A, and faces the outer peripheral mold member 7A with the core mold member 7E interposed therebetween when assembled to the core assembly 7. It arrange | positions in a position and is connected with the connection block 7F.

The core metal mold member 7E is an outer peripheral mold member 7A, assembled by sandwiching between the respective mold assembly surface 7g of 7B, thereby, the outer peripheral mold member 7A, the mold surfaces 7a and 7B are a diameter d ₂ It is a rectangular parallelepiped block-shaped member aligned on the same cylindrical surface. The core metal mold member 7E is an outer peripheral mold member 7A, has the same length as the axial length of 7B, the width in the short direction outer peripheral mold member 7A, in the longitudinal direction of the same width as the width w ₂ of 7B is there.
For this reason, when the outer peripheral mold members 7A and 7B are assembled with the core mold member 7E interposed therebetween, the side surfaces of the core mold member 7E are adjacent to the mold surfaces 7a of the outer peripheral mold members 7A and 7B. The two side surfaces are aligned on the same plane. Therefore, the outer peripheral mold member 7A, core metal mold member 7E, the outer peripheral mold member 7B, the distance w ₂ to can be sandwiched in close contact between the two parallel planes opened.

Outer peripheral mold member 7C, as shown in FIG. 2 (b), made in order to constitute a part of the cylindrical outer peripheral surface of the core assembly 7, minor arc of radius d _2/2 and its chord D The letter-shaped cross section is an elongated block-shaped member that is extended in the axial direction by the same length as the outer peripheral mold members 7A and 7B and the core mold member 7E.
Thus, the outer peripheral mold member 7C has a radius d _2/2 of consisting cylindrical surface mold surface 7c (cavity formation surface), the mold assembly consisting of the mold surface 7c opposite to a plane along the axial direction at the position It has a surface 7h. The mold assembly surface 7h is a surface that comes into contact with the side surfaces aligned on the same plane of the outer peripheral mold member 7A, the core mold member 7E, and the outer peripheral mold member 7B at the time of assembly. Further, when such an assembly, the mold surface 7c is an outer peripheral mold member 7A, the mold surfaces 7a and 7B are aligned with the cylindrical surface of diameter d ₂ aligned.
Of the two planes in the axial direction of the outer peripheral mold member 7C, a fixing bolt 9 for connecting to the connecting block 7F is screwed to the lower surface that comes into contact with the connecting block 7F during assembly, like the outer peripheral mold member 7A. A female screw portion 7f (see FIG. 8G) to be joined is provided.

On the mold surface 7c of the outer peripheral mold member 7C, projections 8a and 8b projecting from the mold surface 7c toward the outside within the range of the thickness t of the metal tube member 2 at a position near the connecting block 7F. (Position restriction part) is provided.
The axial position of the projecting portion 8a is close to the connecting block 7F and the base end forming surface 6d when the core assembly 7 is assembled to the base mold member 6 like the projecting portion 8c of the outer peripheral mold member 7A. It is on the upper side.
The circumferential position of the protrusion 8a is slightly shifted to the outer peripheral mold member 7A side from the wire guide groove 6b where the outer peripheral mold member 7C is opposed in the radial direction.
The protruding portion 8b is a position where the circumferential position is an intermediate position between the protruding portion 8a and the protruding portion 8c of the outer peripheral mold member 7A when the core assembly 7 is assembled. When assembled to the mold member 6, it is above the base end forming surface 6 d. In this embodiment, it is set as the position spaced apart from the connection block 7F rather than the projection parts 8a and 8c.

  The shape of the protrusions 8a and 8b may be any shape as long as the outer peripheral mold member 7C can be released at the same time when it is released from the molded product by moving radially outward along the appropriate release direction. The shape can be adopted. In the present embodiment, as an example, a cylindrical pin parallel to the mold release direction is employed with the mold release direction as the normal direction of the mold assembly surface 7h.

  The outer peripheral mold member 7D is a member having the same shape as the outer peripheral mold member 7C, and sandwiches the outer peripheral mold members 7A and 7B and the core mold member 7E when assembled to the core assembly 7. Then, it is arranged at a position facing the outer peripheral mold member 7C and connected to the connecting block 7F.

  With such a mold configuration, the outer peripheral mold members 7A to 7D constitute a position restricting mold having a position restricting portion, and the core mold member 7E is separated from the molded product by the position restricting mold member. A stationary mold member that fixes the position of the position regulating mold member in the releasing direction is configured.

With such a configuration, the core mold part 5 can be assembled as follows.
First, the outer peripheral mold members 7A to 7D and the core mold member 7E are assembled on the connection block 7F, and the outer peripheral mold members 7A to 7D, the core mold member 7E, and the connection block 7F are respectively fixed by the fixing bolts 9. By connecting, a substantially cylindrical core assembly 7 is formed.
Next, the core assembly 7 is inserted and fitted into the core mounting portion 6c of the base mold member 6 from the connecting block 7F side, and is fixed and assembled with a fixing bolt (not shown).
At this time, as shown in FIG. 2B, the circumferential positional relationship of the core assembly 7 with respect to the base mold member 6 is between the pair of wire guide grooves 6b sandwiching the recessed groove portion 6e. The protrusions 8a, 8b and 8c of the child assembly 7 are set so as to be positioned.
Further, the height from the base end forming surface 6d to the upper end surface of the core assembly 7 is slightly smaller than the distance h between the front end surface 2c and the base end surface 2d of the metal tube member 2, as shown in FIG. It is assumed that h + Δh is large.

Next, after the core mold part 5 assembled in this way is placed on a suitable work table (not shown) with the base mold member 6 facing down, the wire 3 is arranged as follows. To do.
The wire 3 prepares two wires 3 </ b> A and 3 </ b> B that are longer than twice the length of each wire 3 extended from the metal tube member 2.
Then, as shown in FIGS. 2C and 5, an intermediate portion in the length direction of the wire 3 </ b> A is formed between the mold surface 7 a of the outer peripheral mold member 7 </ b> A of the core assembly 7 and the outer peripheral mold member 7 </ b> C. It arrange | positions so that it may contact | abut from the upper side to 1 set of protrusion part 8a, 8b, 8c protruded to the side of the core assembly 7 along the mold surface 7c. As a result, the wire 3A is locked to the protrusions 8a, 8b, and 8c by its own weight.
Then, the wire 3A hanging from the protruding portion 8a is fitted into the lower wire guide groove 6b from the side. Thereby, the wire 3A penetrates in the axial direction of the base mold member 6 and is inserted into the wire guide groove 6b. Similarly, the wire 3A hanging down from the protruding portion 8c is inserted into the wire guide groove 6b from the side in the same manner. Thereby, the wire 3A extends downward from the two wire guide grooves 6b. Further, the intermediate portion of the wire 3A is above the proximal end forming surface 6d, and is in a state along the mold surface 7a of the outer peripheral mold member 7A and the mold surface 7c of the outer peripheral mold member 7C. It is locked to 8a, 8b, 8c.

In the same manner, the intermediate portion of the wire 3B is moved sideways of the core assembly 7 along the mold surface 7a of the outer peripheral mold member 7B of the core assembly 7 and the mold surface 7c of the outer peripheral mold member 7D. It arrange | positions so that it may latch on 1 set of protrusion part 8a, 8b, 8c protruded from above from the upper direction.
Then, the wire 3B hanging from the protrusion 8a is fitted into the lower wire guide groove 6b from the side.

Next, as shown in FIG. 3 (d), the outer frame mold member 10 is attached to the core mold part 5 on which the wires 3 </ b> A and 3 </ b> B are arranged, and the mold 4 is assembled.
As shown in FIGS. 3D and 5, the outer frame mold member 10 has an outer peripheral surface 10 a and an inner peripheral surface 10 b made of a cylindrical surface provided coaxially, and thereby a cylinder having a constant thickness. It is a tubular member having a shape. An upper surface 10c and a lower surface 10d, which are planes along a plane orthogonal to the axial direction, are formed at the end of the outer frame mold member 10 in the axial direction.
The inner diameter of the inner peripheral surface 10b is a diameter _{d 1.}
The axial distance between the upper surface 10 c and the lower surface 10 d of the inner peripheral surface 10 b is a dimension in which the upper surface 10 c protrudes above the upper surface of the core mold part 5 in a state of being attached to the core mold part 5. In addition, the lower surface 10d is set to a dimension that can cover each concave groove 6e from the side.
Further, when the outer frame mold member 10 and the base mold member 6 are fixed with a fixing bolt (not shown), a bolt hole through which the fixing bolt can be inserted into the side surface near the lower surface 10d of the outer frame mold member 10. Is provided.

  The material of the outer frame mold member 10 is made of a metal material having a thermal conductivity that allows the molten metal to be rapidly cooled and cooled at a cooling rate equal to or higher than the critical cooling rate. For example, stainless steel or oxygen-free copper can be used.

In order to assemble the outer frame mold member 10 having such a configuration into the core mold part 5, the core assembly 7 is inserted into the core mold part 5 with the lower surface 10d facing downward from above. Then, the inner peripheral surface 10b of the outer frame mold member 10 is fitted on the side surface 6a.
At this time, since the protruding portions 8a, 8b, 8c protruding to the side of the core assembly 7 protrude within the upper range of the base end forming surface 6d, the outer peripheral surface of the outer frame mold member 10 It can be made to fit outside without contacting 10a.
When the outer frame mold member 10 is fitted, the position with respect to the base mold member 6 is fixed by a fixing structure (not shown).
In this way, the mold 4 is assembled.

Inside the mold 4 is formed a cavity S surrounded by a base end forming surface 6d, a recessed groove 6e, each mold surface 7a, each mold surface 7c, and a mold surface 7f. On the upper side of the cavity S, a molten metal injection port 4a is formed by an opening formed by the outer peripheral surface 10a on the upper surface 10c side of the outer frame mold member 10.
At this time, as shown in FIG. 6, the groove opening of the wire guide groove 6b is covered from the side by the inner peripheral surface 10b of the outer frame mold member 10 in the vicinity of the base end forming surface 6d.
Since the groove width and the groove depth of the wire guide groove 6b are substantially equal to the outer diameter of each wire 3, each wire 3 inserted into the wire guide groove 6b is connected to the proximal end forming surface 6d. In the vicinity, it is inserted through an axial hole surrounded by the wire guide groove 6b and the outer peripheral surface 10a. Since the gap between the hole and the wire 3 is extremely small, the hole is almost closed by the wire 3.
The size of the hole is such that the molten metal described later solidifies before almost entering the hole, or is large enough to solidify without leaking below the hole even if it enters. Set it.

  The hole formed by the wire guide groove 6b and the inner peripheral surface 10b constitutes a linear member insertion portion that allows the inside and the outside of the cavity S to communicate with each other and allows the wire 3A (3B) to be inserted.

  Thus, the first process is completed. By this step, the respective intermediate portions which are part of the wires 3A and 3B are arranged in the cavity S of the mold 4, and other products of the wires 3A and 3B are arranged outside the cavity S.

Next, the second step is performed.
In this step, as shown in FIG. 3 (e), the molten metal M, which is the material of the metal tube member 2, is injected into the molten metal inlet 4 a of the mold 4 to perform molding.
The molten metal M injected into the mold 4 is filled in the cavity S, and is rapidly cooled at a cooling rate higher than the critical cooling rate by contact with the mold 4 to be amorphized along the shape of the cavity S. Solidify in a wet state. For this reason, the filled molten metal M is solidified and integrated in a state of being in close contact with the surfaces of the wires 3A and 3B arranged in the cavity S. Thereby, the metal glass solidified body m having a shape corresponding to the shape of the cavity S is formed.

At this time, the flow of the molten metal M into the cavity S may cause the wires 3A and 3B to deviate from the positions where they are arranged in the mold 4, but since they are within the cavity S, the metal glass solidified body m There is no problem even if it does not protrude and is displaced.
However, since the protrusions 8a, 8b, 8c protruding into the cavity S are directly connected to the outer peripheral mold members 7A, 7C, etc., there is a function of promoting the cooling of the molten metal M. As a result, solidification of the molten metal M is promoted around the protrusions 8a, 8b, and 8c, and the wires 3A and 3B are easily integrated first from the position locked to the protrusions 8a, 8b, and 8c. , It is difficult to deviate from the position where the mold 4 is initially locked. Therefore, if the wires 3A and 3B are arranged so as to be engaged with the protrusions 8a, 8b and 8c at positions separated from the mold surfaces 7a and 7b, the wires 3A and 3B are arranged in the thickness direction of the metal tube member 2. It becomes easy to be fixed at the center position.

Further, since the molten metal M is liquid at a temperature higher than the crystallization temperature and has good fluidity, on the lower surface side of the cavity S, the molten metal M wraps around each hole formed by the wire guide groove 6b and the inner peripheral surface 10b. I will try again. In the present embodiment, the amount of the molten metal M flowing into the hole can be controlled by setting the gap between the hole and the wire 3 sufficiently narrow.
Thus, the heat capacity of the molten metal M entering the hole can be reduced, so that it is rapidly cooled by coming into contact with the base end forming surface 6d around the hole and the wires 3A and 3B inserted through the hole. As a result, it can be solidified at the outer edge of the hole to suppress the intrusion of the molten metal M, or can be solidified before leaking out of the hole even if it enters the hole.

When the molten metal M is filled in the cavity S, the entire molten metal M becomes lower than the glass transition temperature, so that the metallic glass solid body m is formed. The mold 4 is allowed to cool or cool until the temperature of the shape of the solidified metal m becomes stable.
When the temperature of the mold 4 becomes sufficiently low, the outer frame mold member 10, the base mold member 6, and the core assembly 7 are removed in this order.

First, fixing of the outer frame mold member 10 and the base mold member 6 is released, and the upper frame mold member 10 is pulled out and removed (see FIG. 3F).
Next, the base mold member 6 and the connecting block 7 </ b> F are released, and the base mold member 6 is removed from the core assembly 7.
Since the outer frame mold member 10 is removed, each wire 3 inserted through the wire guide groove 6b and fixed in the vicinity of the proximal end forming surface 6d can be moved laterally. For this reason, the wire 3 does not interfere with the removal of the base mold member 6.
However, since each wire 3 is inserted in the hole formed by the wire guide groove 6b and the inner peripheral surface 10b when arranged in the mold 4, it is guided in the normal direction of the base end forming surface 6d. In this state, it is integrated with the solidified metal glass m. Therefore, each wire 3 is extended along the normal line direction of the base end surface 2d in the base end surface 2d of the metal-glass solidified body m formed of the base end formation surface 6d.

  In this way, as shown in FIG. 7A, the coupling body of the core assembly 7 and the solidified metal glass m is taken out. At this time, the connection block 7F is exposed below the base end face 2d formed at the lower end portion of the solidified metal m corresponding to the base end forming face 6d.

Next, the fixing bolt 9 that connects the outer peripheral mold members 7A to 7D, the core mold member 7E, and the connection block 7F is removed, and the connection block 7F is removed.
Next, the core die member 7E is pulled out downward. Thereby, as shown in FIG.8 (g), the outer periphery metal mold | die members 7A-7D remain in the inside of the metal vitrified body m.
After the core mold member 7E is pulled out, it is surrounded by the mold assembly surface 7g of the outer peripheral mold members 7A and 7B, the mold assembly surface 7h of the outer peripheral mold members 7C and 7D, and the metal glass solidified body m. A square hole P is formed.

Next, as shown in FIG. 8 (h), the outer peripheral mold member 7A is moved in the square hole P in the mold release direction of the outer peripheral mold member 7A so as to be released from the metal glass solidified body m. The member 7A is taken out of the metal glass solid m.
Here, the mold release direction of the outer peripheral mold member 7A is parallel to the mold assembly surface 7h of the outer peripheral mold members 7C and 7D and is directed to the outer peripheral mold member 7B (see arrow a in FIG. 8 (h)). is there. Thereby, the shape of the inner peripheral surface 2b corresponding to the mold surface 7a and the recessed hole portion 2i corresponding to the extracted protruding portion 8c are exposed.
Similarly, the outer peripheral mold member 7B is moved in the hole P in the mold release direction of the outer peripheral mold member 7B to release from the metal glass solidified body m, and the outer peripheral mold member 7B is released from the metal glass solidified body. Take it out of m.
Here, the mold release direction of the outer peripheral mold member 7B is opposite to the mold release direction of the outer peripheral mold member 7A.
The order of removing the outer peripheral mold members 7A and 7B may be the order of the outer peripheral mold members 7B and 7A.

Next, as shown in FIG. 8 (i), the outer peripheral mold member 7C is moved in the mold release direction of the outer peripheral mold member 7C to release from the metal glass solidified body m, and the outer peripheral mold member 7C is made of metal glass. It is taken out of the solidified body m.
Here, the mold release direction of the outer peripheral mold member 7C is a direction toward the outer peripheral mold member 7D along the normal direction of the mold assembly surface 7h (see arrow b in FIG. 8 (i)). As a result, the shape of the inner peripheral surface 2b corresponding to the mold surface 7c and the recessed hole portions 2g and 2h corresponding to the extracted protruding portions 8a and 8b are exposed.
Similarly, the outer peripheral mold member 7D is moved in the mold release direction of the outer peripheral mold member 7D to release from the solidified metal m, and the outer peripheral mold member 7D is taken out of the solidified metal m. .
Here, the mold release direction of the outer peripheral mold member 7D is opposite to the mold release direction of the outer peripheral mold member 7C.
The order of removing the outer peripheral mold members 7C and 7D may be the order of the outer peripheral mold members 7D and 7C.
In this way, the core assembly 7 is sequentially disassembled and removed from the metal glass solidified body m, and demolding of the metal glass solidified body m is completed. This metal glass solidified body m is a molded product of metal glass in which wires 3A and 3B are integrated.
Thus, the second process is completed.

The demolded metal glass solid body m is a bottomed cylindrical member whose outer shape is as shown in FIG. 3 (f), and as shown in FIG. The height from the base end forming surface 6d in the mold 4 to the upper end surface of the core assembly 7 is equal to the dimension h + Δh.
Therefore, after the second step, the bottom of the demolded metal glass solid m is cut at a distance h from the base end face 2d. Thereby, the front end surface 2c parallel to the base end surface 2d is formed, and the tubular part 1 with wire as shown in FIG. 1A is manufactured.

According to the method for manufacturing an endoscope component of the present embodiment, the wire 3 is disposed in the cavity S of the metal tube member 2, and the molten metal M, which is a metal glass, is injected into the cavity S, and the wire 3. A solidified metal glass m is formed by integral molding. And the edge part of this metal glass solidified body m is cut | disconnected, and the tubular component 1 with a wire is manufactured.
Since the wire 3 is integrally formed with the metal tube member 2, the fixing strength of the wire 3 with respect to the metal tube member 2 is stable without variations due to variations in processing conditions such as brazing and laser welding. Yes. In this embodiment, since metallic glass excellent in molding transferability is used, the metallic glass is solidified in a state of being closely adhered to the surface of the wire 3A (3B), so that high fixing strength is obtained.
Moreover, in this embodiment, since the intermediate part of wire 3A, 3B is embed | buried in the state bent in the metal pipe member 2, compared with the case where only the edge part of the wire 3 is integrally molded, it is much more fixed strength. Can be improved.
In addition, the wire 3 may be disposed in the cavity S while being locked to the protrusions 8a, 8b, and 8c, and the locking position with the protrusions 8a, 8b, and 8c may not be adjusted accurately. Therefore, the manufacturing efficiency can be improved as compared with the conventional technique that requires a process of accurately aligning the wire 3 with the fixed position.

Here, an example of how to assemble the tubular part 1 with a wire and other endoscope parts will be described.
FIGS. 9A and 9B are schematic views showing an example of an assembly using an endoscope component manufactured by using the endoscope component manufacturing method according to the first embodiment of the present invention. It is sectional drawing.

A tip cover assembly 30 shown in FIG. 9A has a bottomed cylindrical cover member by fixing a cover glass 31 to the inner peripheral surface 2b of the tubular part 1 with wire 1 on the tip surface 2c side by, for example, adhesion. It is the example which comprised. The wire 3 extended from the base end surface 2d is used for operating the direction of the distal end cover assembly 30 by the operation unit.
The protrusion 2e is circumferential with respect to a connecting member 34a for rotatably connecting to another tubular member of the distal end portion of the endoscope, for example, a bending piece (not shown) of the bending portion 34 (see FIG. 9B). It can be used as a positioning projection for positioning.
Since the tubular part 1 with a wire has a cylindrical shape having a thickness t slightly thicker than the wire 3 and has no protrusion on the inner peripheral surface 2b, another cylindrical or columnar member is inserted inside the inner peripheral surface 2b. can do.
For example, as shown in FIG. 9B, from the distal end side, a distal end assembly 32 containing an optical system and the like, and a connecting tube 33 for inserting a member such as an optical fiber extending from the distal end assembly 32 into the interior. Etc. can be arranged.
For this reason, the space in the tubular part 1 with a wire can be used effectively. Moreover, since insertion in an axial direction becomes easy, the work efficiency of assembling and assembling other members in the tubular part 1 with wire can be improved.

[First Modification]
Next, a first modification of the method for manufacturing an endoscope component according to this embodiment will be described.
Fig.10 (a) is a typical perspective view which shows an example of the endoscope component manufactured by the manufacturing method of the endoscope component which concerns on the 1st modification of the 1st Embodiment of this invention. FIG. 10B is a bottom view of the G view in FIG. Fig.11 (a) is a typical perspective view which shows the structure of the metal mold | die member used for the manufacturing method of the endoscope component which concerns on the 1st modification of the 1st Embodiment of this invention. FIGS. 11B and 11C are an HH cross-sectional view and a partial enlarged view in J view, respectively, in FIG.

The manufacturing method of this modification is a method of manufacturing a tubular part 11 with wire (endoscopic part) shown in FIGS. 10A and 10B instead of the tubular part 1 with wire of the first embodiment. It is.
The tubular part 11 with wire is a member that can be used at the distal end portion of the endoscope similarly to the tubular part 1 with wire, and includes a metal tube member 12 instead of the metal tube member 2 of the tubular part 1 with wire. Hereinafter, a description will be given centering on differences from the first embodiment.

The metal tube member 12 is obtained by removing the protrusions 2e of the metal tube member 2 and providing protrusions 12e at four positions where the wires 3 are extended. The material of the metal tube member 12 is made of the same metal glass as that of the metal tube member 2.
The shape of the protrusion 12e is a strip shape along the cylindrical surface protruded in the axial direction of the metal tube member 12, similarly to the projections 2e, having a rectangular shape having a width w ₁ as viewed from the radial direction. However, the thickness of the protrusion 12e is set to be smaller than the thickness t of the metal tube member 12 and thicker than the diameter of the wire 3, and the radially outer side surface of the protrusion 12e is connected to the outer peripheral surface 2a of the metal tube member 12. Aligned. Further, the radially inner side surface of the protrusion 12e is aligned with a cylindrical surface having a larger diameter than the inner peripheral surface 2b.
Similar to the protrusion 2e, the protrusion 12e is engaged with a recess provided in another endoscope component to perform positioning or rotation prevention in the circumferential direction. Further, the shape of the protrusion 12e is not limited to a single shape like the protrusion 2e. For example, a prismatic shape, a cylindrical shape, a rod shape, a chevron block shape, or a U-shaped block shape depending on the shape of the recess of the mating counterpart. An appropriate protrusion shape such as can be employed.

The manufacturing method of this modification for manufacturing the tubular part 11 with a wire having such a configuration includes a first step and a second step similar to the manufacturing method of the first embodiment.
However, in response to the difference in shape between the tubular part 1 with wire and the tubular part 11 with wire, the difference is that a base mold member 16 is used instead of the base mold member 6 of the first embodiment.

As shown in FIGS. 11A, 11B, and 11C, the base mold member 16 (mold member) deletes the concave groove 6e of the base mold member 6 of the first embodiment, A concave groove portion 16e constituting a cavity forming surface for forming the shape of the protrusion 12e is provided on the upper end side of each wire guide groove 6b.
Groove section 16e, in the upper end side of the wire guide grooves 6b, the shape as viewed in the radial direction of the base mold member 16, is the width w ₁ of a rectangular shape about a wire guide grooves 6b, radially inward projection It is a groove part depressed by the same depth as the wall thickness of 12e. In the concave groove portion 16e, on the lower side in the axial direction, a protruding portion distal end forming surface 16f that is a cavity forming surface for forming the shape of the distal end portion of the protrusion 12e is formed as a plane parallel to the proximal end forming surface 6d.
As shown in FIG. 11C, the protrusion tip forming surface 16f is formed with a U-shaped opening in plan view through the wire guide groove 6b.

In the first step of the present modification, the core assembly 7 is assembled in the same manner as in the first embodiment, and the core assembly 7 is inserted into the core mounting portion 6c of the base mold member 16. Then, the core mold part 5A is assembled by fixing with a fixing bolt (not shown) or the like (see FIG. 11B).
However, in the present modification, the lower surface 10d of the outer frame mold member 10 is disposed below the protrusion tip forming surface 16f. Thus, the wire 3 extending downward from the protrusion tip forming surface 16f and inserted into the wire guide groove 6b is laterally formed by the inner peripheral surface 10b near the protrusion tip forming surface 16f (cavity forming surface). Covered.
For this reason, the hole part formed with the wire guide groove 6b and the internal peripheral surface 10b comprises the linear member insertion part similarly to the said 1st Embodiment.

  Next, the wires 3A and 3B are arranged so as to be locked to the protrusions 8a, 8b and 8c from above in the same manner as in the first embodiment, and the wires 3A and 3B are fitted from the side to wire guide grooves. Insert 6b. At this time, for example, as shown in FIG. 11 (b), the wire 3A is disposed inside the recessed groove portion 16e constituting a part of the cavity S, and passes through the U-shaped opening in the protrusion tip forming surface 16f. It will be in the state inserted in the guide groove 6b. Although not specifically shown, the same applies to the wire 3B.

Subsequently, in the same manner as in the first embodiment, the outer frame mold member 10 is fixed to the core mold part 5A, and the mold 4A (see FIG. 11B) is assembled.
Thus, the first process is completed.
Next, instead of the mold 4, the mold 4 </ b> A is used, and the second process is performed in the same manner as in the first embodiment. Thereby, it replaces with the processus | protrusion 2e and the bottomed cylindrical metal glass solidified body m which has the processus | protrusion 12e is obtained. Next, the edge part of the metal glass solidified body m is cut | disconnected similarly to the said 1st Embodiment. As a result, the tubular part 11 with a wire is manufactured.

[Second Modification]
Next, a second modification of the method for manufacturing an endoscope component according to this embodiment will be described.
FIG. 12 is a schematic cross-sectional view showing the configuration of the main part of a mold member used in the method for manufacturing an endoscope component according to the second modification of the first embodiment of the present invention.

The manufacturing method of this modification is a manufacturing method in the case where the extending direction of the wire 3 of the tubular part 11 with wire of the first modification is directed in an oblique direction toward the radially outer side of the tubular part 11 with wire.
For this reason, in this modification, as shown in FIG. 12, instead of the base mold member 16 of the first modification, a base mold member 16A (mold member) is used. Hereinafter, a description will be given centering on differences from the first modification.

The base mold member 16 </ b> A includes wire guide grooves 16 b instead of the wire guide grooves 6 b of the base mold member 16.
The wire guide groove 16b is provided with a U-shaped opening similar to that of the first modification on the protruding portion tip forming surface 16f, and the groove bottom of the U-shaped groove is formed on the radially outer side of the tubular part 11 with wire. It is a groove portion that is inclined in a diagonal direction and opens in the side surface 6a of the base mold member 16A.

By using the base mold member 16A instead of the base mold member 16, in the first step of this modification, as shown in FIG. 12, the wire 3 is inserted into the wire guide groove 16b and Extend outside the mold.
Next, the outer frame mold member 10 is fixed. At this time, the position of the lower surface 10d is disposed slightly below the protrusion tip forming surface 16f. As a result, the wire 3 is pressed toward the wire guide groove 16b by the corner formed by the inner peripheral surface 10b and the lower surface 10d of the outer frame mold member 10, and the gap around the wire 3 is narrowed. The level difference between the lower surface 10d and the protrusion tip forming surface 16f is such that the gap between the U-shaped opening and the wire 3 on the protrusion tip forming surface 16f does not cause the molten metal M to leak when the molten metal M is injected. Set to
Thereby, the inner peripheral surface 10b of the outer frame mold member 10 covers the concave groove portion 16e from the side, and closes the U-shaped opening of the protruding portion tip forming surface 16f from the side with the wire 3 interposed therebetween. It will be.
As a result of being pressed against the base mold member 16, the wire 3 is inserted into the wire guide groove 16b while being pressed against the wire guide groove 16b along the inclination direction of the wire guide groove 16b.
For this reason, the hole formed by the wire guide groove 16b and the inner peripheral surface 10b constitutes a linear member insertion portion that allows the inside and the outside of the cavity S to communicate with each other and the wire 3A (3B) to be inserted therethrough. Yes.

After the wires 3A and 3B are arranged in this way in the first step, the steps after the second step are performed in the same manner.
Thereby, the wire 3 will be in the state extended in the diagonal direction which goes to a radial direction outer side from the front end surface of the processus | protrusion 12e.
Since this extension angle can be appropriately changed according to the inclination angle of the wire guide groove 16b, according to the present modification, the extension direction in the vicinity of the protrusion tip forming surface 16f of the wire 3 can be freely changed. Can do.

[Third Modification]
Next, a third modification of the method for manufacturing an endoscope component according to this embodiment will be described.
Fig.13 (a) is a typical perspective view which shows the structure of the metal mold | die member used for the manufacturing method of the endoscope component which concerns on the 3rd modification of the 1st Embodiment of this invention. FIGS. 13B and 13C are a plan view of the K view and a partially enlarged view of the L view in FIG. 13A, respectively.

  This modification is a modification of the method for locking the wire 3 in the first step, and a core as shown in FIG. 13 (a) instead of the core mold part 5 of the first embodiment. A mold part 25 is used. Hereinafter, a description will be given centering on differences from the first embodiment.

The core mold part 25 includes a core assembly 27 instead of the core assembly 7 of the core mold part 5.
The core assembly 27 includes outer peripheral mold members 27A, 27B, 27C, and 27D (mold members, hereinafter, sometimes collectively referred to as “outer peripheral mold members 27A to 27D”), an intermediate mold member 27E (mold mold member) is detachably assembled with a substantially cylindrical block having a diameter d ₂ is formed by the cylindrical block of one end in the first embodiment and similar to the coupling block 7F reference (FIG. 13 (c)) It is the assembly connected so that attachment or detachment was possible. For this reason, the core assembly 27 constitutes a substantially cylindrical block having a diameter d ₂ as a whole.
The outer peripheral mold members 27A to 27D, the intermediate mold member 27E, and the connection block 7F are connected by fixing bolts (not shown in FIG. 13), respectively, as in the first embodiment. However, the mounting position of the fixing bolt 9 is appropriately determined according to the difference in shape between the outer peripheral mold members 7A to 7D and the core mold member 7E, the outer peripheral mold members 27A to 27D, and the intermediate mold member 27E. has been edited.

Outer peripheral mold member 27A, in order to constitute a part of the outer peripheral surface the cylindrical of the core assembly 27, D-shaped cross section consisting minor arc of radius d _2/2 and its strings, if extended in the axial direction It is an elongated block-like member.
Thus, the outer peripheral mold member 27A has a radius d _2/2 of the die surface 27a formed of a cylindrical surface, the mold assembly surface 27g comprising a plane at a position facing the mold surface 27c along the axial direction (FIG. 13 (See (b)). The mold assembly surface 27g is a flat surface that comes into contact with the intermediate mold member 27E during assembly.
The length in the circumferential direction of the die surface 27a is shorter than a quarter of the circumference of the diameter d _2, in the present embodiment, and is approximately one sixth of the circumference.
Further, although not particularly shown, a female screw in which a fixing bolt 9 for connecting to the connecting block 7F is screwed onto the lower surface of the two axial planes of the outer peripheral mold member 27A that comes into contact with the connecting block 7F during assembly. Is provided.

On the mold surface 27a of the outer peripheral mold member 27A, within the range of the wall thickness t of the metal tube member 2 from the mold surface 27a to the outer side in the radial direction, at a position close to the connecting block 7F during assembly in the axial direction. A protruding portion 28 (position restricting portion) is provided.
As shown in FIG. 13 (c), the axial position of the protruding portion 28 is a wire between the base end forming surface 6 d and the protruding portion 28 when the core assembly 27 is assembled to the base mold member 6. 3 is set in a positional relationship where 3 can be sandwiched.
In the present embodiment, the circumferential position of the protrusion 28 is a position that bisects the mold surface 27a in the circumferential direction.
An appropriate shape can be adopted as the shape of the protruding portion 28 as long as the shape can be released from the molded product by moving inward in the radial direction with the normal direction of the mold assembly surface 28g as the release direction. In the present embodiment, as an example, a cylindrical pin parallel to the mold release direction is employed.

  In the present embodiment, the outer peripheral mold members 27B, 27C, and 27D are members having exactly the same shape as the outer peripheral mold member 27A, and only the arrangement positions with respect to the intermediate mold member 27E are different.

The intermediate mold member 27E has the outer peripheral mold members 27A to 27D arranged at four positions on the outer peripheral side to form a substantially cylindrical core assembly 27, and therefore the axial direction of the outer peripheral mold members 27A to 27D. has a length equal axial length, six sides, two mold surfaces 27e consisting of a cylindrical surface which forms a part of a cylinder of diameter d _2, adjacent to the circumferential direction of these mold surfaces 27e This is a columnar block member composed of a mold assembly surface 27h, which is four planes each provided in two.
Each mold assembly surface 27h is provided as a flat surface in close contact with and in contact with each mold assembly surface 27g of the outer peripheral mold members 27A to 27D. When the mold surfaces 27a of the outer peripheral mold members 27A to 27D are brought into close contact with the mold assembly surfaces 27h, the four mold surfaces 27a and the two mold surfaces 27e by, so that the cylinder of diameter d ₂ is configured.
Further, although not particularly illustrated, a female screw for screwing a fixing bolt 9 for connecting to the connecting block 7F to the lower surface of the two axial planes of the intermediate mold member 27E that contacts the connecting block 7F during assembly. Is provided.

  With such a mold configuration, the outer peripheral mold members 27A to 27D constitute a position restricting mold having a position restricting portion, and the intermediate mold member 27E has a position restricting mold member released from the molded product. A stationary mold member that fixes the position of the position regulating mold member in the releasing direction is configured.

  Next, the first process of the present modification will be described focusing on differences from the first embodiment. In the first embodiment, after assembling the core mold part 5 and before fixing the outer frame mold member 10 to the core mold part 5, the wires 3A and 3B are engaged with the protrusions 8a, 8b and 8c. The wires 3A and 3B were placed in the cavity S by stopping. This modification is different in that the wires 3A and 3B are arranged by sandwiching the wires 3A and 3B between the protrusion 28 and the base end forming surface 6d while assembling the core mold part 25.

First, the core assembly 27 is assembled.
That is, the mold assembly surfaces 27g of the outer peripheral mold members 27A and 27B are brought into contact with the two mold assembly surfaces 27h adjacent to each other in the circumferential direction in the intermediate mold member 27E, and are located at positions facing these two. The substantially cylindrical part composed of the outer peripheral mold members 27A to 27D and the intermediate mold member 27E by bringing the respective mold assembly surfaces 27g of the outer peripheral mold members 27C and 27D into contact with the two mold assembly surfaces 27h. An assembly is formed, and this subassembly is connected to the connection block 7F by the fixing bolt 9 to assemble the core assembly 27.
At this time, the protrusions 28 protruding from the outer peripheral mold members 27A to 27D protrude radially toward the normal direction of the mold assembly surfaces 27h of the intermediate mold member 27E. Therefore, the protrusions 28 on the outer peripheral mold members 27A and 27B protrude in directions that form an acute angle, and the protrusions 28 on the outer peripheral mold members 27C and 27D protrude in a direction that forms an acute angle.

Next, after the base mold member 6 is placed on a suitable work table (not shown) with the core mounting portion 6c facing upward, the wires 3A and 3B are connected to the base mold as follows. Arranged on the member 6.
First, a pair of wire guide grooves 6b sandwiching one concave groove portion 6e in a state where an intermediate portion in the length direction of the wire 3A is disposed on the base end forming surface 6d so as to straddle the single concave groove portion 6e from above. Fit from the side. Thereby, the wire 3A is inserted through the wire guide groove 6b.
Similarly, the wire 3B is similarly arranged on the other concave groove portion 6e and a pair of wire guide grooves 6b sandwiching it.

Next, the core assembly 27 is inserted and fitted into the core mounting portion 6c of the base mold member 6 from the connecting block 7F side, and is assembled by fixing with a fixing bolt (not shown).
At this time, as shown in FIG. 13B, in the core assembly 27, each protrusion 28 protruding from the outer peripheral mold members 27A and 27B protrudes from the outer peripheral mold members 27C and 27D. Each protrusion 28 inserts the wire 3B in a positional relationship in which the wire 3B is pressed from above. As a result, the positions of the wires 3A and 3B are fixed between the wire guide groove 6b through which the wires 3A and 3B are inserted and the recessed groove portion 6e over which the wires 3A and 3B are respectively inserted, and are sandwiched between the protruding portion 28 and the base end forming surface 6d. .
As described above, the core mold part 25 is assembled, and the wires 3A and 3B are disposed on the base end forming surface 6d which is the cavity forming surface in a state where the wires 3A and 3B are in contact with the protrusions 28.

  Next, in the same manner as in the first embodiment, the outer frame mold member 10 is fixed to the base mold member 6, and a mold including the core mold portion 25 and the outer frame mold member 10 is assembled. Thus, the first process of the present modification is completed.

  Next, in the same manner as in the first embodiment, by performing the steps subsequent to the second step, a tubular part with wire having a shape substantially similar to that in the first embodiment is manufactured. This tubular part with wire has the same shape as that of the tubular part 1 with wire except for the shape and the position of the recessed hole formed in the inner peripheral surface 2b corresponding to the shape and the position of the protrusion 28. Have.

According to this modification, since the wires 3A and 3B are sandwiched and locked between the base end forming surface 6d and the protrusion 28, the positions of the integrally formed wires 3A and 3B in the cavity S are stabilized. Can be made. As a result, when the outer frame mold member 10 is fixed, the positions of the wires 3A and 3B are stabilized, so that the fixing operation can be performed more smoothly.
In the first step, if a slack is provided in advance in the wire 3 disposed on the concave groove portion 6e, when the molten metal M is injected, the wire 3 is pressed to the groove bottom side of the concave groove portion 6e and enters the protrusion 2e. It solidifies in the state of entering. In this way, the fixing strength of the wire 3 is improved by solidifying the wire 3 while entering the protrusion 2e. Further, the wire 3 that has entered the protrusion 2e also functions as a reinforcing member for the protrusion 2e.

[Second Embodiment]
An endoscope part manufacturing method according to a second embodiment of the present invention will be described together with the shape of the endoscope part manufactured by the manufacturing method.
Fig.14 (a) is a typical perspective view which shows an example of the endoscope component manufactured by the manufacturing method of the endoscope component which concerns on the 2nd Embodiment of this invention. FIG. 14B is a bottom view of the N view in FIG. FIG. 15A is a schematic front view showing an insertion holding member used in the method for manufacturing an endoscope component according to the second embodiment of the present invention. FIGS. 16A and 16B are schematic perspective views illustrating steps of a method for manufacturing an endoscope component according to the second embodiment of the present invention. FIGS. 17A and 17B are a P-P cross-sectional view and a Q-Q cross-sectional view in FIG.

A tubular part 41 with wire shown in FIGS. 14A and 14B is an example of an endoscope part manufactured by the method for manufacturing an endoscope part according to this embodiment.
The tubular part 41 with a wire includes a metal tube member 42 in which the protrusion 2e is removed from the metal tube member 2 in place of the metal tube member 2 of the tubular part 1 with wire of the first embodiment, and further includes a base end face 2d. In the vicinity of the four systems of wires 3 extending from the base, the piece-like protrusion forming portions 43e protruding in the axial direction from the base end face 2d are provided.
Similar to the protrusion 2e, the protrusion forming portion 43e is fitted with a recess provided in another endoscope component to perform positioning or rotation prevention in the circumferential direction, and the shape of the other endoscope component The shape, positional relationship, and number can be set appropriately.
In the present embodiment, as an example, the four protrusion forming portions 43e each have a rectangular plate shape that is slightly narrower than the thickness t of the metal tube member 42, and extend along the radial direction of the metal tube member 42. They are arranged radially.
In addition, in the present embodiment, when the four wires 3 are divided into two pairs of two adjacent systems in the present embodiment, the circumferential position of the protrusion forming portion 43e is the base end surface between the two wires 3 in each set. Two protrusions 43e are sandwiched between 2d.

The protrusion forming portion 43e is a rod-shaped metal fitting 43, as shown in FIG. 15A, arranged on a mold so that its end extends outward from the base end surface 2d of the metal tube member 42 along the axial direction. The metal fitting 43 is provided by insert molding.
In this embodiment, the rod-shaped metal fitting 43 is formed of a metal rectangular plate whose width in the short direction is slightly narrower than the wall thickness t of the metal tube member 42. One end portion of the rod-shaped metal fitting 43 is projected to the outside of the metal tube member 42 after integral molding to constitute a projection forming portion 43e. A wire insertion hole 43a that forms an opening through which the wire 3 can be inserted is passed through the other end of the rod-shaped metal fitting 43 in the thickness direction.
As long as the material of the rod-shaped metal fitting 43 is a metal material that does not melt or deform when the molten metal M is poured, an appropriate metal material can be adopted.
Below, the manufacturing method of the tubular part 41 with a wire of this embodiment is demonstrated centering on a different point from the said 1st Embodiment.

In this embodiment, in order to manufacture such a tubular part 41 with a wire, as in the manufacturing method of the first embodiment, a part of the wire 3 is disposed in the cavity of the mold, A first step of disposing the portion outside the cavity, and injecting a molten metal material into the cavity, cooling the molten metal at a rate higher than the critical cooling rate of the material to solidify the molten metal 3 And a second step of forming a molded product of metallic glass integrated with.
However, instead of the core mold part 5 of the first embodiment, as shown in FIGS. 16A and 16B, a base mold member 46 (mold member) and a core 47 (mold member) The core mold part 45 made of

The base mold member 46 is provided with wire guide holes 46b in place of the respective wire guide grooves 6b by deleting the recessed groove portions 6e of the base mold member 6 of the first embodiment, and further including these wire guide holes 46b. Is provided with a metal mounting hole 46e (see FIG. 17A).
As shown in FIGS. 17A and 17B, the wire guide hole 46b includes a cavity side opening 46a provided on the base end forming surface 6d and an external side opening 46c provided on the side surface 6a. It is a hole that communicates within the mold member 46.
The cavity side openings 46a are circular openings having an inner diameter slightly larger than the outer diameter of the wire 3, and are provided at four positions that divide the base end forming surface 6d into four equal parts in the circumferential direction (see FIG. 16). ).
The outer side opening 46c is provided as an elliptical opening larger than the outer diameter of the wire 3 at a position where the side surface 6a is divided into four equal parts in the circumferential direction and aligned with each cavity side opening 46a in the circumferential direction.
The inner shape of the wire guide hole 46b is a vertical shaft portion 46A extending from the cavity side opening 46a in the axial direction of the base mold member 46, and an oblique direction from the lower end side of the vertical shaft portion 46A toward the radially outer side. And an inclined pit portion 46C communicating with the external opening 46c.
The inner diameter of the vertical shaft portion 46A is the same as that of the cavity side opening 46a, and the inner diameter of the inclined shaft portion 46C is larger than that of the vertical shaft portion 46A.

The metal fitting hole 46e is arranged so that a portion of the rod-shaped metal fitting 43 excluding the protrusion forming portion 43e is disposed in the cavity, and the protrusion forming portion 43e is protruded from the base end forming surface 6d to the outside of the cavity. It is a square hole that accommodates and holds the protrusion forming portion 43e in the base material.
As shown in FIG. 16A, the circumferential position of the metal mounting hole 46e corresponds to the two cavity side openings adjacent to each other in the circumferential direction corresponding to the arrangement of the protrusion forming portion 43e of the tubular part 41 with wire. Between 46a, it arrange | positions in the positional relationship by which the two metal fitting arrangement | positioning holes 46e are pinched | interposed into the circumferential direction.

Core 47 is a cylindrical member having projections 8a from the core assembly 7, 8b, the outer shape obtained by deleting the 8c, provided with a die surface 47a is a cylindrical surface having a diameter d ₂ as the cavity forming surface.
Since the core 47 does not have a protrusion on the mold surface 47a, the core 47 can be released with the axial direction of the molded product as the release direction without using a split mold configuration. However, it may be configured to be divided into a plurality of mold members in the same manner as in the first embodiment.
Similarly to the core assembly 7, the core 47 is inserted into the core mounting portion 6 c of the base mold member 46 at the lower end in the axial direction, and is fixed to the base mold member 46 by a fixing bolt (not shown). It can be fixed detachably.

In the first step of the present embodiment, as shown in FIG. 16A, the rod-shaped metal fitting 43 is inserted into each metal fitting arrangement hole 46e of the base mold member 46 from the protrusion forming portion 43e side. Thereby, the part except the protrusion formation part 43e of the rod-shaped metal fitting 43 protrudes and is arrange | positioned in the range of the radial direction width | variety of 6 d of base end formation surfaces. In the present embodiment, the wire insertion hole 43 a of each bar-shaped metal fitting 43 is arranged in a state in which the central axis faces the circumferential direction of the base mold member 46.
Next, one end of the wire 3A is inserted into the wire guide hole 46b through the external opening 46c and pulled out from the cavity opening 46a. The wire 3A drawn out from the cavity side opening 46a is inserted into the wire insertion hole 43a of the rod-shaped metal fitting 43 disposed in the vicinity of the cavity side opening 46a and the wire insertion of another rod-shaped metal fitting 43 adjacent to the rod-shaped metal fitting 43 in the circumferential direction. The holes 43a are sequentially inserted. Thereafter, the wire is inserted into the wire guide hole 46b provided near the second metal rod 43 inserted through the cavity side opening 46a and pulled out of the base mold member 46 through the external side opening 46c. At this time, since the core 47 is not assembled to the base mold member 46, a space above the core mounting portion 6c is vacant. For this reason, workability | operativity becomes favorable.
The wire 3A drawn from the external opening 46c further adjusts the drawing length.
Since the wire 3A hangs between the rod-shaped metal fittings 43 due to its own weight, the wire 3A routed above the base end forming surface 6d from the two cavity side openings 46a is locked by the two rod-like metal fittings 43. It is arranged in the state.
Similarly, the wire 3 </ b> B is arranged using the remaining wire guide holes 46 b and the rod-shaped metal fittings 43.

  Thus, each wire guide hole 46b constitutes a linear member insertion portion that allows the inside and the outside of the cavity to communicate with each other and allows the wire 3A (3B) to pass therethrough. The rod-shaped metal fitting 43 is a position restricting portion for restricting the position of the wire 3A (3B) in the cavity of the mold, and has a wire insertion hole 43a that is an opening through which the wire 3A (3B) can be inserted. The insertion holding member is configured.

Next, as shown in FIG. 16 (b), the core 47 is inserted and fixed to the core mounting portion 6c of the base mold member 46 in which the four rod-shaped metal fittings 43 and the wires 3A and 3B are arranged. The core mold part 45 is assembled.
At this time, the wires 3 </ b> A and 3 </ b> B are stably disposed above the base end forming surface 6 d by the rod-shaped metal fitting 43, so that these wires 3 </ b> A and 3 </ b> B do not interfere with the insertion of the core 47.

Next, in the same manner as in the first embodiment, the outer frame mold member 10 is fixed to the base mold member 46, and a mold including the core mold portion 45 and the outer frame mold member 10 is assembled. However, in the present embodiment, since there is no concave groove 6e to be covered by the inner peripheral surface 10b of the outer frame mold member 10, the axial position of the lower surface 10d of the outer frame mold member 10 is the base end forming surface 6d. The lower side is sufficient.
Above, the 1st process of this embodiment is complete | finished.

  Next, in the same manner as in the first embodiment, by performing the steps after the second step, the wire-equipped tubular part 41 in which the rod-shaped metal fitting 43 and the wires 3A and 3B are integrally formed is manufactured. However, in the present embodiment, the core 47 is one mold member that can be released from the solidified metal m in the axial direction. Accordingly, the demolding process is greatly simplified. It becomes.

According to the present embodiment, since the wires 3A and 3B are inserted into and contacted with the wire insertion holes 43a of the rod-shaped metal fitting 43, the wires 3A and 3B can be connected even if an external force is applied to the wires 3A and 3B after insertion. It can be securely locked. For this reason, even if it is a wire etc. which are rich in elasticity, latching work becomes easy.
Further, since the wires 3A and 3B are integrally formed in a state where the wires 3A and 3B are inserted into the wire insertion holes 43a of the rod-shaped metal fitting 43, the fixing strength of the wires 3A and 3B with respect to the metal tube member 42 can be further improved.
Moreover, since the shape which latches wire 3A, 3B is comprised by the rod-shaped metal fitting 43 which is a member different from a mold member, a mold member can be simplified and the manufacturing cost of a metal mold | die can be reduced.
Further, since no protrusion is provided on the core 47, it is easy to remove the core 47, and the workability of mold removal can be improved.
Moreover, in this embodiment, since the rod-shaped metal fitting 43 in which the protrusion formation part 43e was inserted in the base metal mold member 46 also has a function of a heat radiating member, rapid cooling of the molten metal M can be promoted.

In addition, since the protrusion forming portion 43e is configured by the shape of the rod-shaped metal fitting 43, even when a more complicated shape is required depending on the shape of other endoscope parts to be connected, the mold of the mold It can be formed without complicating the structure. In addition, the protrusion forming portion 43 e can be formed of a material different from that of the metal tube member 42.
For example, by forming the rod-shaped metal fitting 43 with a thin plate of a stainless steel plate, it is possible to easily form a protrusion having springiness. In addition, by forming the rod-shaped metal fitting 43 from a copper plate, it is easy to improve electrical connection and also serve as an electrical contact.

[Modifications (Fourth Modification, Fifth Modification)]
Next, a fourth modification and a fifth modification, which are modifications of the present embodiment, will be described.
FIGS. 15B and 15C show modified examples (fourth modified example and fifth modified example) of the insertion holding member used in the method of manufacturing an endoscope component according to the second embodiment of the present invention. It is a typical front view to show.

In the fourth modified example, instead of the rod-like metal fitting 43 of the second embodiment, a rod-like metal fitting 43A (position restricting portion, insertion holding member) shown in FIG. 15B is used. Hereinafter, a description will be given focusing on differences from the second embodiment.
The rod-shaped metal fitting 43A is a member in which a through-hole 43b penetrating in the thickness direction is provided between the wire insertion hole 43a of the rod-shaped metal fitting 43 and the protrusion forming portion 43e.
FIG. 15 (b) shows an example in which a through hole 43b, which is a single square hole, is provided in the vicinity of the wire insertion hole 43a. However, the shape, arrangement, and number of the through holes 43b are as follows. It is not limited to. The through hole 43b may be, for example, a round hole or the like, may be provided near the protrusion forming portion 43e, and the number of the through holes 43b may be plural.

According to this modification, the molten metal M injected into the cavity in the second step can easily flow in the circumferential direction through the through-holes 43b, so that the filling property of the molten metal M can be improved.
Moreover, when the molten metal M enters and solidifies into the through hole 43b, the adhesion between the rod-shaped metal fitting 43A and the metal tube member 42 is improved, and the fixing strength of the rod-shaped metal fitting 43A is increased.

In the fifth modification, a rod-shaped metal fitting 43B shown in FIG. 15C is used in place of the rod-shaped metal fitting 43 of the second embodiment. Hereinafter, a description will be given focusing on differences from the second embodiment.
The rod-shaped metal fitting 43B (position restricting portion, insertion holding member) includes an opening 43d and a C-shaped groove 43c instead of the wire insertion hole 43a of the rod-shaped metal fitting 43.
The opening 43d is provided on one side in the short direction at the end of the rod-shaped metal fitting 43B opposite to the protrusion forming portion 43e. The opening width of the opening 43d is wider than the outer diameter of the wire 3, and the wire 3 can be easily inserted from the lateral side of the rod-shaped metal fitting 43B.
The C-shaped groove 43c is a groove part formed by penetrating an arc having an inner diameter larger than the opening width of the opening 43d in the plate thickness direction on the back side of the opening 43d.

In the first step of this modification, when the rod-shaped metal fitting 43B is installed on the base mold member 46, the opening 43d is arranged so as to face the radially outer side of the base mold member 46.
Thereby, when arrange | positioning the wire 3, it can arrange | position in the C-shaped groove | channel 43c by inserting wire 3A (3B) pulled out from the cavity side opening 46a into the opening 43d from the radial direction outer side.
The wire 3 (3B) arranged in the C-shaped groove 43c is locked in the C-shaped groove 43c recessed below the opening 43d by its own weight.

According to the present modification, the wire 3A (3B) does not need to pass through the C-shaped groove 43c from one end side thereof and pass through the length direction, and thus the arrangement work of the wire 3A (3B) is further simplified. be able to.
Moreover, since the wire 3A (3B) can be inserted into each rod-shaped metal fitting 43B from the outside in the radial direction, the wire 3A (3B) can be simultaneously inserted into the plurality of openings 43d, and the working efficiency can be further improved. Therefore, even when the core 47 and the base mold member 46 are assembled, the wire 3A (3B) can be easily disposed in the C-shaped groove 43c.

[Third Embodiment]
A method for manufacturing an endoscope component according to a third embodiment of the present invention will be described together with the shape of the endoscope component manufactured by the present manufacturing method.
FIG. 18 is a schematic exploded perspective view showing an example of an endoscope part manufactured by the endoscope part manufacturing method according to the third embodiment of the present invention. FIG. 19A is a plan view of the view R in FIG. FIG. 19B is a plan view at the time of assembly. Fig.20 (a) is TT sectional drawing in Fig.19 (a). FIG. 20B is a side view of the U view in FIG. Fig.21 (a) is typical sectional drawing of the metal mold | die used for the manufacturing method of the endoscope component which concerns on the 3rd Embodiment of this invention. FIG. 21B is a VV cross-sectional view in FIG. 22A, 22B, and 22C are schematic cross-sectional views illustrating the steps of the method for manufacturing an endoscope component according to the third embodiment of the present invention. FIG. 23 is a schematic partial cross-sectional view showing a main part of an example of an endoscope using an endoscope component manufactured by an endoscope component manufacturing method according to a third embodiment of the present invention. .

As shown in FIG. 18 and FIG. 19A, the tubular part 51 with a wire manufactured by the manufacturing method of the present embodiment is connected to a tubular member 53 which is another endoscope part to form an endoscope. Endoscope parts to be used, a metal tube member 52 made of the same material as the metal tube member 2 of the first embodiment, and four lines of wires extending from four locations at the end of the metal tube member 52 3.
The metal tube member 52 holds an annular portion 52A having a substantially cylindrical shape that is thinner than the diameter of the wire 3 and four wires 3 inside the other end of the annular portion 52A. Therefore, the wire holding part 52B which consists of four protrusions which protrude in the radial direction inner side from the internal peripheral surface of 52 A of annular parts, and was extended in the axial direction is provided.
The outer diameter of the outer peripheral surface 52a is larger than the outer diameter of the outer peripheral surface 52b on the other end side at one end side in the axial direction of the annular portion 52A. For this reason, steps are formed in the outer peripheral portion and the inner peripheral portion in the intermediate portion in the axial direction of the annular portion 52A. Hereinafter, the range of the outer peripheral surface 52a is referred to as a large-diameter portion of the annular portion 52A, and the range of the outer peripheral surface 52b is referred to as a small-diameter portion of the annular portion 52A.
The dimensions of the wire with the tubular part 51 may employ an appropriate size, but in the following, as an example, the outer diameter of the outer peripheral surface 52b of the small diameter portion is described in the example is equal to the diameter d _1.

The large-diameter portion of the annular portion 52A is provided with a semicircular tip notch portion 52f provided by post-processing after molding, and a circular hole 52g penetrating in the thickness direction.
On the end surface 52d on the other end side of the annular portion 52A, a protrusion 52e having a rectangular shape as viewed from the radial direction is projected on one extension of the wire holding portion 52B.
As shown in FIG. 19B, the protrusion 52e is engaged with a concave groove portion 53c provided in a tubular member 53 described later, and performs positioning or detent in the circumferential direction.

The wire holding part 52B is provided in the small diameter part of the annular part 52A. Further, as shown in FIGS. 18 and 20A, one wire holding portion 52B extends in the axial direction so as to overlap the protrusion 52e.
As shown in FIG. 20B, the cross section in the axial direction of the wire holding portion 52B is provided in a D shape surrounding the wire 3, and the inner peripheral surface of the annular portion 52A is divided into four equal parts in the circumferential direction. It is provided in the position to do. For this reason, a hole having a cross-shaped cross section extending in the axial direction is formed inside the small diameter portion.
The thickness in the radial direction of the wire holding portion 52B is set so that the thickness including the thickness of the annular portion 52A is larger than the outer diameter of the wire 3A (3B).

As shown in FIG. 20A, the tubular member 53 is formed from a protrusion having an outer shape similar to that of the wire holding portion 52B on the inner peripheral surface of a cylindrical member having an outer diameter substantially similar to the small diameter portion of the annular portion 52A. There are four wire insertion portions 53a. The wire insertion portion 53a is provided at a position that divides the tubular member 53 into four equal parts in the circumferential direction, and penetrates in the axial direction inside each of the wire members 53a and has a wire insertion hole 53b having an inner diameter slightly larger than the outer diameter of the wire 3 Is provided.
At one end of the tubular member 53, there is provided a concave groove 53c that fits the protrusion 52e of the tubular part 51 with wire without rattling in the circumferential direction.

Next, the manufacturing method of this embodiment is demonstrated.
This embodiment demonstrates the metal mold | die 54 which shape | molds the tubular part 51 with a wire.
As shown in FIG. 21A, the mold 54 includes a core mold part 55 including a base mold member 56 (mold member) and a core assembly 57 (mold member), and an outer frame mold member. 50 (mold member). Since these mold members are all in contact with the molten metal M, they are manufactured from the same metal material as the core mold part 5 of the first embodiment.

In the base mold member 56, the three concave groove portions 16e are deleted from the base mold member 16 of the first modified example of the first embodiment, and the shape of the protrusion 52e is adjusted in place of the remaining one concave groove portion 16e. A concave groove portion 56e is provided, and further, instead of the four wire guide grooves 6b, wire guide holes 46b of the base mold member 46 of the second embodiment are provided. However, the core mounting portion 6 c is smaller in diameter than the inner diameter of the base mold member 16 in accordance with the shape of the core assembly 57.
For this reason, the cavity side opening 46a in three of the four wire guide holes 46b is opened to the base end forming surface 6d, and the cavity side opening 46a of the other one cavity side opening 46a is opened to the groove 56e. Has been.

The core assembly 57 includes a fixed portion 57d made of a cylindrical projection that fits into the core mounting portion 6c, a wire holding portion mold surface that molds the inner surface of the small diameter portion of the annular portion 52A and the shape of the wire holding portion 52B. 57b, a position regulating surface 57c constituting a mold surface for molding an end surface opposite to the end surface 52d among the end surfaces in the axial direction of the wire holding portion 52B, and an inner peripheral surface 52c of the large-diameter portion of the annular portion 52A. A columnar member provided with a mold surface 57a for molding is assembled by a plurality of mold members. In FIG. 21A, illustration of the dividing line is omitted for simplicity.
As long as the split form of the core assembly 57 is a split form that can be detached from the core assembly 57 from the solidified metal m, an appropriate shape or split unit can be adopted. For example, a configuration in which a plurality of outer peripheral mold members are arranged around a core mold member provided at the center like the core assembly 7 of the first embodiment can be adopted.
The core assembly 57 and the base mold member 56 can be detachably fixed by fixing bolts (not shown).

The outer frame mold member 50 is provided on the upper inner peripheral surface 50a formed of a cylindrical surface for forming the outer peripheral surface 52a of the large-diameter portion of the annular portion 52A, and coaxially with the upper inner peripheral surface 50a, and the annular portion 52A. of a die tubular member provided therein a lower inner circumferential surface 50b consisting of the outer circumferential surface 52b and the cylindrical surface of diameter d ₁ for molding a radial side surface of the protrusion 52e of the small diameter portion.

In the first step of the present embodiment, first, the mold 54 is assembled by assembling the base mold member 56, the core mold part 55, and the metal tube member 52 as shown in FIG.
Thereby, a continuous cavity for forming the shape of the metal tube member 52 is formed in the mold 54. The cavity corresponds to the shape of the molded article is molded with cavities S ₁ for molding a shape of the large diameter portion of the annular portion 52A, the shape of the small diameter portion and three wire holding portion 52B of the annular portion 52A the cavity _{S 2,} can be divided into the cavity _{S 3} for molding the shape of the projection 52e.

Next, the four wire 3 is inserted from the wire guide hole 46b of the base mold member 56 to the tip of the wire 3 comes into contact with the position restricting surface 57c, to place the wire 3 into the cavity S _2.
For example, as shown in FIG. 22 (a), when inserting push the one wire 3 external side opening 46c of the wire guide hole 46b which communicates with the cavity S _3, the wire 3 along the wire guide hole 46b move The tip protrudes from the cavity side opening 46a.
Continuing the insertion, as shown in FIG. 22 (b), the tip of the wire 3 reaches the cavity S ₂ and passes through the cavity S _3, eventually leading end of the wire 3 comes into contact with the position restricting surface 57c.
When the operator inserts the wire 3 until the tip of the wire 3 comes into contact with the position regulating surface 57c, the operator stops the insertion.
At this time, since the base mold member 46 is bent, the wire 3 in the wire guide hole 46 b is maintained in a state of being inserted by friction with the base mold member 46.
Similarly, the other three cavities S _2, respectively inserted a different wire 3.
Thus, the first process is completed.

Next, in the same manner as in the second step of the first embodiment, the molten metal M is injected from the opening side of the upper inner peripheral surface 50a to perform molding (see FIG. 22C). Accordingly, the cavity S _1, S _2, metal vitrified having a shape corresponding to the shape of the S ₃ m is formed.
At this time, the inflow of the molten metal M into the cavity S _2, or spaced distal end of the wire 3 from the position regulating surface 57c, in a range of space of the cavity S _2, but may also happen that the wire 3 to move , because it is in the range of the cavity S _2, it does not protrude from the metal vitrified m, no problem even if misalignment.

When the cooling of the metal vitrified body m is completed, demolding is performed.
In the present embodiment, first, the base mold member 56 and the core assembly 57 are released from the fixed state, and the base mold member 56 is removed from the core mold portion 55. At this time, since the tip side of the wire 3 inserted into the wire guide hole 46b is integrally fixed to the metal glass solidified body m, the wire 3 is pulled out from the wire guide hole 46b together with the removal of the base mold member 56.
Next, the outer frame mold member 50 is pulled out and removed to the side where the base mold member 56 is provided. Further, the core assembly 57 remaining inside the metal glass solidified body m is appropriately divided and removed from the metal glass solidified body m.
The metal glass solid body m thus demolded is cut in the same manner as in the first embodiment, and the shapes of the tip notch 52f, the circular hole 52g, and the like are further processed.
Thus, the tubular part 51 with a wire can be manufactured.

According to this embodiment, by inserting the wire 3 into the assembled mold 54 from the wire guide hole 46b, the wire 3 is applied to the position regulating surface 57c which is a cavity forming surface for molding the end surface of the wire holding portion 52B. After being placed in contact, the second and subsequent steps are performed, whereby the wire-equipped tubular part 51 in which the wire 3 is integrally formed can be manufactured.
This embodiment is an example of a case where the first step can be performed without projecting the protruding portion that locks the wire 3 from the cavity forming surface.
Moreover, since the tubular part 51 with a wire manufactured by the manufacturing method of the present embodiment is provided by projecting the wire holding part 52B to the inside of the annular part 52A, the annular part having a thickness smaller than the diameter of the wire 3 is provided. 52A can be formed.

Next, an example of using the wire-equipped tubular part 51 in an industrial endoscope 60 (endoscope) shown in FIG. 23 will be described.
The industrial endoscope 60 includes, for example, a distal end portion 61 in which an optical system 64, an image guide fiber 66, and the like are incorporated in a cover body 63 to which a plurality of metal tube members are connected, and an insertion portion (not shown). In order to bend the tip portion 61 at the tip, a plurality of bending pieces 69 are rotatably connected to the bending portion 62.
One end of a connection pipe 65, which is a pipe member having a smaller diameter than the outer diameter of the cover main body 63, is fitted and fixed to the base end side of the cover main body 63. The large diameter portion of the annular portion 52A of the metal tube member 52 is externally fitted and coupled to the other end of the connection tube 65. The circular hole 52g is used as a fixing hole for connecting the connecting pipe 65 and the annular portion 52A.
In the metal tube member 52, a connecting member 68 is connected to the small diameter portion of the annular portion 52A in a state in which the connecting member 68 is prevented from rotating in the circumferential direction via a projection 52e (not shown).
The connecting member 68 is a tubular member that is connected to the bending piece 69 on the most proximal end side so as to be rotatable about a vertical axis in the drawing.
The connecting member 68 and the bending piece 69 are provided with wire insertion holes 68a and 69a through which the wire 3 is inserted into the inner periphery so that the wire 3 can be advanced and retracted at four positions dividing the circumferential direction into four equal parts. . The wires 3 extending from the metal tube member 52 are inserted into the wire insertion holes 68a and 69a, respectively.
The outer peripheral portions of the metal tube member 52, the connecting member 68, and the bending piece 69 are covered with a flexible bending portion cover 67 having substantially the same outer diameter as the cover main body 63.
A space communicating in the axial direction is formed inside the metal tube member 52, the connecting member 68, and the bending piece 69, and an image guide fiber 66 extending from the distal end portion 61 to the proximal end side and a non-conductive portion are formed in this space. The illustrated electric cable or the like is inserted.

  With such a configuration, the bending portion 62 is bent by pulling the wire 3 by an operation portion (not shown) provided on the base end side, and the metal tube member 52 fixed to the distal end portion of the bending portion 62 is provided. Accordingly, the direction of the tip portion 61 can be changed, or the position of the tip portion 61 can be moved.

[Modification (Sixth Modification)]
Next, a sixth modification that is a modification of the present embodiment will be described.
FIG. 24 is a schematic side view showing the configuration of an endoscope part manufactured by the method for manufacturing an endoscope part according to a modification (sixth modification) of the third embodiment of the present invention ( This corresponds to the U view in FIG.

As shown in FIG. 24, the tubular part 71 (endoscopic part) with a wire according to the present modification is configured to form four systems of wires 3 using two wires 3A and 3B. Instead of the four wires 3 and the metal tube member 52 of the tubular part 51 with wires of the third embodiment, wires 3A and 3B and a metal tube member 72 are provided.
The metal tube member 72 is obtained by changing the wire holding portion 52B of the metal tube member 52 to a wire holding portion 72B. Hereinafter, a description will be given focusing on differences from the third embodiment.

The wire holding part 72 </ b> B is formed of a thick part in the metal tube member 52 that is continuous in the circumferential direction between the wire holding parts 52 </ b> B adjacent in the circumferential direction. For this reason, the wire holding part 72B is formed with a partially cylindrical shape that occupies a range slightly wider than a quarter of the circumferential direction in the inner peripheral part of the annular part 52A, facing the radial direction. .
The thickness of the wire holding portion 72B is set such that the thickness including the thickness of the annular portion 52A is thicker than the outer diameter of the wire 3A (3B).

The tubular part 71 with a wire according to the present modification has a concave shape in which the shape of the wire holding part mold surface 57b of the core assembly 57 of the third embodiment is made to correspond to the shape of the wire holding part 72B. It can be formed by a mold (not shown).
However, in this modification, before assembling the base mold member 56 and the core assembly 57, the wire 3A (3B) is inserted into the two wire guide holes 46b, and the wire 3A, After the intermediate portion 3B is arranged, the core assembly 57 and the base mold member 56 are assembled. And the outer frame metal mold | die member 50 is engage | inserted so that the intermediate part of wire 3A (3B) may be located in a cavity, and a metal mold | die is assembled.
As described above, in the present modification, the wire 3A (3B) is inserted into the wire guide hole 46b so as to be disposed in a stable state in the cavity without necessarily being brought into contact with the position restricting portion or the cavity forming surface. It is an example of where you can.

According to this modification, the wire-equipped tubular part 71 in which the four wires 3 are extended from the metal tube member 72 using the two wires 3A and 3B can be manufactured. The wires 3A and 3B can be quickly arranged as compared with the case where the wire is formed and molded.
Moreover, the fixing strength with respect to drawing can be improved compared with the case where the four wires 3 are used.

[Fourth Embodiment]
An endoscope component manufacturing method according to a fourth embodiment of the present invention will be described together with the shape of the endoscope component manufactured by the present manufacturing method.
FIG. 25 is a schematic perspective view showing a configuration of an endoscope part manufactured using the endoscope part manufacturing method according to the fourth embodiment of the present invention. FIG. 26 is a schematic exploded perspective view of a mold used in the method for manufacturing an endoscope component according to the fourth embodiment of the present invention. FIG. 27 is a plan view of FIG.

A raising stand 81 shown in FIG. 25 is an example of an endoscope component manufactured by the endoscope component manufacturing method of the present embodiment.
The elevator 81 is, for example, a flexible rod-shaped or tubular controlled member such as a treatment instrument that is disposed at the distal end portion of the endoscope and is inserted through a channel formed inside the endoscope. It is a member that controls the protruding direction when protruding from the tip of the lens to the outside.
In the following, an example will be described in which the elevator 81 includes an elevator body 82 having a substantially triangular prism shape with a right-angled cross section and a wire 3 for operating the elevator body 82. The length of the wire 3 is set to an appropriate length that can be connected to an operation unit of an endoscope (not shown).
The material of the elevator main body 82 is made of the same metal glass as that of the metal tube member 2 of the first embodiment.

The elevator main body 82 includes a slope 82d corresponding to the hypotenuse of the right triangle, a tip side surface 82g corresponding to the other two sides of the right triangle, and a lateral surface between the left side 82e and the right side 82f having a right triangle shape. Direction side surfaces 82h are formed.
In the inclined surface 82d, an arcuate groove portion 82a is formed at the center between the left side surface 82e and the right side surface 82f.
The groove width in the direction sandwiched between the left side surface 82e and the right side surface 82f of the arc-shaped groove 82a is set according to the thickness of the controlled member so that the controlled member can be smoothly inserted into the groove.

  Between the left side surface 82e and the right side surface 82f, there is provided a rotation support shaft insertion hole 82b penetrating in the thickness direction at a corner that is sandwiched between the lateral side surface 82h and the inclined surface 82d and forms an acute angle. The rotation spindle insertion hole 82b is a through hole through which a rotation spindle (not shown) provided in the endoscope is inserted. Thereby, the raising stand 81 can be rotatably connected via a rotation support shaft (not shown) provided at the distal end portion of the endoscope.

  On the left side surface 82e of the elevator main body 82, the wire 3 is embedded in the vicinity of the inclined surface 82d near the tip side surface 82g. On the inclined surface 82d in the vicinity where the wire 3 is embedded, there are formed protrusion part release marks 82c which are three hole parts formed by releasing a position restricting protrusion 86c described later.

Such a raising base 81 is manufactured by the manufacturing method of the endoscope component of the present embodiment using the mold 85 shown in FIG.
The manufacturing method includes a first step of disposing a part of the wire 3 in the cavity of the mold 85 and disposing the other part of the wire 3 outside the cavity, and a molten metal that becomes a metal glass in the cavity. A second step of cooling the molten metal at a critical cooling rate or higher to solidify the molten metal to form a metallic glass molded product integrated with the wire 3.

First, the configuration of the mold 85 will be described.
The mold 85 is formed on a plate-like base 90 (mold member) by a mold body 86 (mold) for molding the sloped surface 82d of the raising base body 82, the arc-shaped groove 82a, and the protruding part release mark 82c. Member), a side frame 89 that forms the shape of the tip side surface 82g, a rod-shaped core 91 (mold member) that forms the shape of the rotation support shaft insertion hole 82b, the base 90, the mold body 86, and the side Side frames 88 and 87 (mold members), which are arranged at positions sandwiching the frame 89 and the rod-shaped core 91 and respectively shape the left side surface 82e and the right side surface 82f, are assembled.
The material of these mold members constituting the mold 85 is composed of a metal material having a thermal conductivity such that at least a portion in contact with the molten metal can be cooled at a cooling rate higher than the critical cooling rate by quenching the molten metal. . For example, stainless steel or oxygen-free copper can be used.

The mold body 86 is a substantially triangular block-shaped mold member having an inclined surface forming surface 86 a inclined obliquely with respect to the base 90 as a cavity forming surface that forms the shape of the inclined surface 82 d of the raising base body 82. On the slope forming surface 86 a, the cavity of the wire 3 is formed between the groove forming projection 86 b that forms the cavity forming surface that forms the shape of the arc-shaped groove 82 a of the raising body 82, and between the groove forming projection 86 b and the side frame 88. A position restricting protrusion 86c that constitutes a position restricting portion that restricts the inner position is provided.
In the present embodiment, the position restricting protrusion 86 c is such that three cylindrical pins are erected in a direction parallel to the mold surface 89 a (see FIG. 27) of the side frame 89. As shown in FIG. 27, the position restricting protrusions 86c are arranged in a positional relationship that forms a convex triangle on the groove forming protrusion 86b side in plan view. The distance between the adjacent groove forming projections 86b is set to be smaller than the diameter of the wire 3 so that the wire 3 does not slip through.

As shown in FIG. 26, the side frame 88 has a rectangular plate-like lower frame 88B that covers a range from the position of the side surface of the base 90 to the height at which the position restricting projection 86c is erected, and the lower frame 88B A rectangular plate-like upper frame 88A that covers the upper mold body 86 and the side frame 89 is provided so as to be divided.
On the dividing surface that divides the side frame 88 into the lower frame 88B and the upper frame 88A, the wire 3 can be smoothly inserted at a position facing the position restricting projection 86c from the side when the mold 85 is assembled. 3 are provided with semicircular grooves 88b and 88a that form circular holes having an inner diameter substantially the same as the outer diameter of 3, respectively.
The side frame 87 and the upper frame 88A are provided with rod-shaped core fixing holes 87a and 88c for fixing the position of the rod-shaped core 91 when the mold 85 is assembled.
Note that the rod-shaped core 91 may have a tapered shape that is slightly reduced in diameter from one end to the other end so that it can be easily pulled out from the molded product.

In the first step of the manufacturing method, a mold 85 is assembled as shown in FIG. Thus, beveled surfaces 86a, mold surface 89, the cavity _{S 4} surrounded by the side frames 87, 88 are formed.
Next, semi-circular grooves 88a formed in the side frame 88, insert the wire 3 from the circular hole by 88b, it is advanced to the distal end portion of the wire 3 into the cavity S _4.
The wire 3 in the cavity S4 abuts on one of the position restricting projections 86c facing the front of the semicircular grooves 88a and 88b. When the wire 3 is further pushed in, the wire 3 is bent along the side surface of the position restriction projection 86c on the side frame 88 side, and is brought into contact with and locked to the plurality of position restriction projections 86c.
Thus, the first process is completed.

Next, in the cavity S _4, perform molding by injecting molten metal M in the same manner as in the first embodiment. The second step is thus completed.
When the second step is completed, the molded product is removed from the mold 85. Then, the surface shape of the lateral side surface 82h is adjusted by appropriately cutting the shape of the molded product on the inlet side of the molten metal M as necessary. Thereby, the raising stand 81 by which the wire 3 was integrally molded by the raising stand main body 82 is manufactured.

According to the manufacturing method of this embodiment, by pushing from the side of the mold 85 engages the wire 3 by performing a first step of placing the wire 3 into the cavity S ₄ to the position restricting projection 86c, Since the molding is performed in the second step, the fixing strength of the linear member in the endoscope component can be stabilized and the manufacturing efficiency can be improved.
The present embodiment is an example in which the wire 3 is integrally formed on a lifting block main body 82 having a triangular block shape in which the endoscope part is different from the tubular part.

In the description of the first embodiment, the example in which the wire 3A (3B) is brought into contact with the protrusions 8a, 8b, and 8c from above and locked by its own weight has been described. Thus, the upper position of the wire 3A (3B) disposed in the cavity S from the wire guide groove 6b is regulated, and is disposed so as to fit in the space between the base end forming surface 6d and the protrusions 8a, 8b, 8c. You may use as a position control part to do.
Moreover, you may distribute the wire 3A (3B) so that it may pass through between the protrusion parts 8a, 8b, and 8c, and may become a shape by a side view waveform.

  In the description of the fourth embodiment, the wire 3 is inserted from the semicircular grooves 88a and 88b, so that the position is regulated by contacting the groove forming protrusion 86b. Before assembling 88A, the top end of the wire 3 passes between the three groove forming projections 86b and the tip of the wire 3 is entangled with the three groove forming projections 86b and locked, and then the upper frame 88A is assembled. The wire 3 may be disposed between the semicircular grooves 88a and 88b.

  Moreover, in the description of each of the above-described embodiments and modifications, the example in the case where the wire 3 has four systems or one system (fourth embodiment) has been described. Is not limited, and an appropriate number and number of systems can be adopted according to functions required for the endoscope component.

In the description of each of the embodiments and the modifications described above, the example in which the position restricting portion is configured by the protrusion from the cavity forming surface has been described. However, the linear member is disposed in contact with the cavity forming surface. A groove that can be used may be provided to regulate the position of the linear member.
For example, in the base end forming surface 6d of the base mold member 6 of the first embodiment, an arcuate groove that can accommodate the wire 3 along the circumferential direction is interposed between the pair of wire guide grooves 6b. You may form and arrange | position the wire 3 in this groove | channel.

  Moreover, all the components described in the above embodiments and modifications can be implemented by appropriately combining or deleting within the scope of the technical idea of the present invention.

1, 11, 41, 51, 71 Wired tubular parts (endoscopic parts)
2, 12, 42, 52, 72 Metal tube member 2e, 12e, 52e Protrusion 3, 3A, 3B Wire (Linear member)
4, 4A, 54, 85 Mold 4a Molten inlet 5, 5A, 25, 45, 55 Core mold part 6, 16, 16A, 46, 56 Base mold member (mold member)
6b, 16b Wire guide grooves 6e, 16e, 56e Concave groove (cavity forming surface)
7, 27, 57 Core assembly (mold member)
7a, 7c, 7f, 27a, 27c, 27e, 47a, 57a Mold surface (cavity forming surface)
7A, 7B, 7C, 7D, 27A, 27B, 27C, 27D Outer peripheral mold member (mold member, position regulating mold member)
7E Core mold member (mold member)
7F Connecting block (mold member)
7h, 27g, 27h, 28g Mold assembly surfaces 8a, 8b, 8c, 28 Protruding part (position restricting part)
DESCRIPTION OF SYMBOLS 10 Outer frame metal mold | die member 10a Outer peripheral surface 10b Inner peripheral surface 10c Upper surface 10d Lower surface 11, 41 Tubular component 16f Projection part front end formation surface (cavity formation surface)
27E Intermediate mold member (mold member)
43, 43A, 43B Bar-shaped metal fitting (position restricting part, insertion holding member)
43a Wire insertion hole (opening through which a linear member can be inserted)
43c C-shaped groove (opening through which linear member can be inserted)
43d opening (opening through which linear members can be inserted)
43e Projection forming part 46a Cavity side opening 46b Wire guide hole (linear member insertion part)
46c External side opening 46e Bracket arrangement hole 47 Core (mold member)
50 Outer frame mold members 52B and 72B Wire holding portion 57c Position regulating surface 60 Industrial endoscope 61 Tip portion 81 Raising stand (endoscope part)
82 Raising body 86 Mold body (mold member)
86a Slope formation surface (cavity formation surface)
86c Position restriction protrusion (position restriction part)
M Molten metal m Solidified glass S, S ₁ , S ₂ , S ₃ , S ₄ cavity

Claims (10)

A first step of disposing a part of the linear member in the cavity of the mold and disposing the other part of the linear member outside the cavity;
A molten metal material is injected into the cavity, and the molten metal is cooled at or above a critical cooling rate of the material to solidify the molten metal, thereby forming a metallic glass molded product integrated with the linear member. A second step of:
A method for manufacturing an endoscopic part comprising: In the cavity of the mold, a position restricting portion for restricting the position in the cavity of the linear member is provided,
2. The method of manufacturing an endoscope part according to claim 1, wherein in the first step, the linear member is brought into contact with the position restricting portion and disposed in the cavity of the mold. 3. The mold is provided with a linear member insertion portion for allowing the inside and the outside of the cavity to communicate with each other and for inserting the linear member,
The endoscope part according to claim 2, wherein in the first step, the linear member is inserted into the linear member insertion portion and the linear member is disposed in the cavity. Method. The linear member insertion portion is provided in at least two places,
In the first step, one linear member is inserted through the linear member insertion portions provided at two locations, and an intermediate portion of the one linear member is disposed in the cavity. The method for manufacturing an endoscope part according to claim 3, wherein both ends of the one linear member are arranged outside the cavity. 5. The method of manufacturing an endoscope component according to claim 2, wherein the position restricting portion is a groove provided on a cavity forming surface of the mold constituting the cavity. . 5. The method of manufacturing an endoscope component according to claim 2, wherein the position restricting portion is a protrusion provided on a cavity forming surface of the mold constituting the cavity. . The position restricting portion is formed such that an insertion holding member having an opening through which the linear member can be inserted protrudes from a cavity forming surface of the mold constituting the cavity.
In the first step, the linear member is disposed in the cavity by inserting the linear member through the opening of the insertion holding member and holding the linear member in the insertion holding member. Item 5. The method for manufacturing an endoscope part according to any one of Items 2 to 4. The method of manufacturing an endoscope part according to claim 7, wherein a part of the insertion holding member protrudes outside the cavity. The mold has a core mold part that molds the shape of the inner surface of the molded product with a plurality of mold members that are detachably attached to each other.
The plurality of mold members of the core mold part include a position restriction mold member having the position restriction part, and the position restriction mold in a releasing direction in which the position restriction mold member is released from the molded product. A fixed mold member for fixing the position of the member,
After performing the second step, the fixed mold member is removed from the core mold part, the position regulating mold member of the core mold part is moved to the fixed mold member side, and the position is The method for manufacturing an endoscope part according to any one of claims 2 to 8, wherein the restriction mold member is released from the molded product. The core mold part has a cylindrical outer shape,
10. The internal view according to claim 9, wherein the fixed mold member has a rectangular parallelepiped shape, and is provided so as to be able to be pulled out in a direction intersecting with the mold release direction of the position regulating mold member. Mirror part manufacturing method.

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