JP2023111152A - Locking handle - Google Patents

Abstract

To provide a locking handle capable of improving the design.SOLUTION: A locking handle 11 includes a handle body 13 extending in a longitudinal direction X. The handle body 13 has a primary molded part 30 molded using a first resin material; and a secondary molded part 40 formed using a second resin material and provided outside the primary molded part 30. The thickness in a first direction Y perpendicular to the longitudinal direction X in the primary molded part 30 gradually decreases toward one side of the longitudinal direction X.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to locking handles.

Patent Document 1 discloses a crescent lock as a lock device that locks by operating a lock handle. The locking handle disclosed in Patent Literature 1 rotates around a rotating shaft. The lock handle disclosed in Patent Document 1 is a rod-shaped resin molded product.

JP 2008-267032 A

If the locking handle is molded from a single resin, molding defects such as sink marks are likely to occur on the surface of the thick portion. In order to eliminate the presence of thick portions in a resin molded product, a thinned portion is provided to make the thickness uniform. If the locking handle is provided with a lightening portion, the design is degraded.

The present disclosure has been made in view of the above circumstances, and provides a locking handle with improved design.

A locking handle according to an aspect of the present disclosure includes a handle body extending in a longitudinal direction, and the handle body includes a primary molded portion molded using a first resin material and a second resin material molded using , and a secondary molded portion provided outside the primary molded portion, wherein the thickness of the primary molded portion in the orthogonal direction orthogonal to the longitudinal direction increases toward one side in the longitudinal direction. Therefore, it gradually becomes thinner.

1 is a front view of a locking device with a locking handle of the present disclosure; FIG. 1 is a perspective view of a locking device having a locking handle of the present disclosure; FIG. Fig. 3 is an exploded perspective view of the locking handle as seen from the spoon side; FIG. 10 is a cross-sectional view of the locking handle orthogonal to the Y direction at a position including the axis; Fig. 3 is a cross-sectional view of the locking handle; It is the top view which looked at the lock device from the Z direction. FIG. 4 is a plan view of the concave portion viewed from the −Z side; FIG. 4 is a cross-sectional view of the handle body perpendicular to the Y direction at a position including the central axis; 4 is a cross-sectional view of the handle body orthogonal to the X direction at a position including the central axis; FIG. FIG. 4 is a cross-sectional view of a primary mold for molding a primary molded portion; FIG. 4 is a cross-sectional view of a secondary mold that forms a secondary molded portion; It is the perspective view which expanded the +Z side edge part of a shaft member.

Embodiments of a locking handle and a method for manufacturing a locking handle according to the present disclosure will be described below with reference to FIGS. 1 to 12 . The following embodiments show one aspect of the present disclosure, do not limit the present disclosure, and can be arbitrarily changed within the scope of the technical idea of the present disclosure. In the drawings below, in order to make each configuration easy to understand, the actual structure and each structure are different in scale, number, and the like.

As shown in FIG. 1, a lock device 1 is attached to a meeting frame 2 of an inner shoji in a sliding sash. The lock device 1 is fixed when it is screwed to the meeting frame 2 using two mounting screws 3 . The lock device 1 is a crescent lock.

The lock device 1 has a crescent main body 10 and a base portion 20 . The pedestal portion 20 is fixed to the meeting frame 2 using the mounting screws 3 . As shown in FIG. 2, the crescent body 10 has a locking handle 11 and a spoon 12 . The locking handle 11 has a handle body 13 and a rotating shaft 14 (see FIG. 1). As shown in FIG. 3, the handle body 13 extends longitudinally. The rotating shaft 14 extends in the direction of the axis J perpendicular to the longitudinal direction. The rotating shaft 14 protrudes from the handle body 13 to one side in the axis J direction. The lock handle 11 is a molded body in which the rotating shaft 14 and the handle body 13 are integrally formed by insert molding using the rotating shaft 14 as an insert member.

In the drawings, the longitudinal direction along which the handle body 13 extends is defined as the X direction, the axis J direction along which the rotary shaft 14 extends is defined as the Z direction, and the width direction of the handle body 13 perpendicular to the X and Z directions is defined as the Y direction. do. The side of the handle body 13 on which the rotation shaft 14 is arranged in the X direction is the -X side. In the Z direction, the side where the rotation shaft 14 protrudes from the handle body 13 is the -Z side. The +X side corresponds to one side in the longitudinal direction of the claims. The Y direction of the width direction corresponds to the first direction in the claims. The -Z side corresponds to one side of the second direction in the claims.

The spoon 12 connects the inner shoji and the outer shoji when it engages with the hook of the outer shoji on the sash. The spoon 12 holds the sash closed when engaged with the hook. The spoon 12 has a through hole 12A and a through hole 12B. The through hole 12A has a circular shape centered on the axis J when viewed in the Z direction and penetrates in the Z direction. The distal end side of the rotary shaft 14 is inserted through the through hole 12A. The through hole 12B has an arc shape centered on the axis J when viewed in the Z direction and penetrates in the Z direction. A projection 13A of the handle body 13 is inserted into the through hole 12B. The protrusion 13A inserted into the through hole 12B is fitted in the circumferential direction about the axis J. As shown in FIG. The spoon 12 is circumferentially fixed to the handle body 13 when the protrusion 13A is fitted into the through hole 12B.

The rotary shaft 14 is rotatably supported about the axis J with respect to the base portion 20 (see FIG. 1). The handle body 13 rotates about the rotation shaft 14 with respect to the base portion 20 . When the handle body 13 is operated and the handle body 13 rotates about the rotating shaft 14, the spoon 12 rotates integrally with the handle body 13. - 特許庁When the spoon 12 rotates about the axis of rotation 14, it engages the hook of the outer shoji on the sash. The spoon 12 connects the inner shoji and the outer shoji when it engages with the hook of the outer shoji on the sash. The spoon 12 holds the sash closed when engaged with the hook. By operating the handle body 13, it is possible to switch between a locked state in which the sash is closed and an unlocked state in which the sash is opened.

The handle body 13 has a primary molded portion 30 , a secondary molded portion 40 , a concave portion 50 and a projection 60 . The primary molded portion 30 is molded using a first resin material. As shown in FIG. 4 , the primary molded portion 30 constitutes a primary molded body integrally molded with the rotary shaft 14 . The primary molded portion 30 constitutes a primary molded body integrally molded with the rotating shaft 14 when molded using insert molding using the rotating shaft 14 as an insert member. The rotary shaft 14 is arranged near the −X side end of the primary molding portion 30 . The projecting portion 13A is arranged adjacent to the +X side of the rotation shaft 14 in the primary molding portion 30 .

The locking handle 11 has a pivot area 31 and an operating area 32 . The rotating shaft region 31 is a region in which the rotating shaft 14 is provided. The rotation axis area 31 is an area in which the spoon 12 and functional parts related to the rotation of the spoon 12 are arranged in addition to the rotation axis 14 . The primary molding portion 30 is exposed facing the -Z side in a rotating shaft region 31 in which the rotating shaft 14 is provided. The operation area 32 is an area where locking and unlocking operations are performed. The operation area 32 is arranged away from the rotation axis area 31 on the +X side in the longitudinal direction.

The secondary molded portion 40 is molded using a second resin material. The secondary molded portion 40 is provided outside the primary molded portion 30 . The secondary molded portion 40 covers the entire circumference of a specific region of the primary molded portion 30 . The secondary molded portion 40 covers the entire circumference of the operation area 32 in the primary molded portion 30 . The secondary molded portion 40 constitutes a secondary molded body integrally molded with the primary molded body including the rotating shaft 14 and the primary molded portion 30 . The secondary molded body is the locking handle 11 . The secondary molded portion 40 constitutes a secondary molded body integrally molded with the primary molded body when molded by insert molding using the primary molded body as an insert member.

The first resin material and the second resin material may be the same type of resin material, or may be different types of resin material. The first resin material and the second resin material may be the same resin material with different additives, or may be resin materials with different additive amounts. When the same resin material is used for the first resin material and the second resin material, the molding conditions for injection molding the primary molded portion 30 and the molding conditions for injection molding the secondary molded portion 40 are set. can facilitate When the same resin material is used for the first resin material and the second resin material, the difference in coefficient of linear expansion between the primary molded portion 30 and the secondary molded portion 40 can be reduced. By reducing the difference in coefficient of linear expansion between the primary molded portion 30 and the secondary molded portion 40, it is possible to suppress the separation of the secondary molded portion 40 from the primary molded portion 30 due to the difference in linear expansion coefficient. For the first resin material and the second resin material, it is preferable to use, for example, a synthetic resin such as polyamide resin or nylon.

As an additive, it is preferable to use a reinforcing material in order to ensure mechanical strength. As a reinforcing material, glass fiber, glass beads, talc, calcium carbonate, etc. can be used. Glass fiber is preferable as the reinforcing material from the viewpoint of mechanical strength and availability. When glass fiber is used as the reinforcing material, it is preferable to add a large amount of glass fiber to the primary molded portion 30 which is the base material of the lock handle 11 . If the amount of the glass fiber added is large, the glass fiber becomes fuzzy, deteriorating the design property and deteriorating the weather resistance. It is preferable that the amount of the secondary molded portion 40 that is exposed on the surface and becomes the design surface is smaller than the amount of glass fiber added in the primary molded portion 30 .

The primary molded portion 30 is made of nylon containing 50% glass fiber as a glass reinforcing material. The secondary molded portion 40 is made of nylon containing 30% glass fiber as a glass reinforcing material. The primary molded part 30 is made of nylon containing 50% glass fiber, and the secondary molded part 40 is made of nylon containing 30% glass fiber, so that it has high mechanical strength, good design and weather resistance. A superior handle body 13 is obtained.

As shown in FIG. 5, the Y-direction thickness of the primary molded portion 30 gradually decreases toward the +X side. The Y-direction thickness of the primary molding portion 30 gradually decreases along the Y-direction as it moves away from the rotating shaft 14 . The thickness t2 is thinner than the thickness t1. Both surfaces facing the Y direction in the primary molding portion 30 are inclined by 0.5 degrees from the surface along the XZ direction.

The Y-direction thickness of the secondary molded portion 40 gradually increases toward the +X side. The thickness t12 is thicker than the thickness t11.

As shown in FIG. 4, the surface 30a facing the +Z side of the primary molded portion 30 gradually slopes slightly toward the -Z side toward the +X side. The thickness in the Z direction of the secondary molded portion 40 provided outside the surface 30a of the primary molded portion 30 gradually increases toward the +X side. The thickness t22 is thicker than the thickness t21. This prevents the primary molded portion 30 from rising upward during secondary molding.

The recessed portion 50 is provided around a central axis C that is located away from the rotating shaft 14 on the +X side and extends in the axis J direction. The concave portion 50 is recessed toward the +Z side from the first end surface 41 on the −Z side of the handle body 13 . The first end face 41 is the end face of the secondary molded portion 40 . As shown in FIG. 6, the recess 50 is arranged in the center of the handle body 13 in the Y direction. The concave portion 50 is arranged at a position facing the base portion 20 when the handle body 13 is in the locked position indicated by the two-dot chain line and when the handle body 13 is in the unlocked position indicated by the solid line. By arranging the recessed portion 50 at a position facing the pedestal portion 20 at each of the locked position and the unlocked position, it is possible to prevent the recessed portion 50 from being visually recognized at each of the locked position and the unlocked position. A deterioration in designability due to the presence of the concave portion 50 is suppressed.

As shown in FIGS. 7, 8 and 9, the recess 50 includes a cavity 51, a first recess 52, a second recess 53, a pair of first opposing wall portions 54, a connecting wall portion 55, a rib portion 56, and a pair of It has a second opposing wall portion 57 . The second depression 53, the pair of first opposing wall portions 54, the connecting wall portion 55, the rib portion 56, and the pair of second opposing wall portions 57 are part of the secondary molded portion 40 molded of the second resin material. be.

The first recess 52 is recessed toward the +Z side from the second end surface 33 located on the −Z side of the primary molding portion 30 . The first recess 52 is circular in plan view. The cavity 51 is recessed from the first end surface 41 toward the +Z side. The cavity 51 is coaxial with the first recess 52 and extends to the +Z side. Cavity 51 extends to the area surrounded by first depression 52 . The second recess 53 is recessed from the first end surface 41 toward the +Z side. The second depressions 53 are arranged on both sides of the cavity 51 in the X direction. The second depression 53 in plan view has a shape surrounded by an arc having the same diameter as the first depression 52 and a chord extending in the Y direction on the arc. The second recess 53 has a depth smaller than the thickness of the secondary molded portion 40 located on the −Z side of the primary molded portion 30 .

The pair of first opposing walls 54 are arranged on both sides of the cavity 51 in the X direction so as to face each other. The first opposing wall portion 54 extends from the bottom of the second depression 53 along the inner peripheral surface of the first depression 52 toward the +Z side. The planar view shape of the first opposing wall portion 54 is the same as the planar view shape of the second recess 53 . The connecting wall portion 55 is positioned at the bottom portion of the first recess 52 and connects the +Z side end portions of the pair of first opposing wall portions 54 . The planar view shape of the connecting wall portion 55 is circular with the same diameter as the first recess 52 . The rib portion 56 has a rib shape extending in the X direction and having a shorter dimension in the Y direction than the connecting wall portion 55 . The position of the rib portion 56 in the Y direction is the center position of the recess 50 . The rib portion 56 protrudes from the connecting wall portion 55 toward the −Z side and connects the pair of first opposing wall portions 54 to each other.

The pair of second opposing walls 57 are arranged on both sides of the cavity 51 in the Y direction so as to face each other. The second opposing wall portion 57 extends from both ends of the connecting wall portion 55 in the width direction along the inner peripheral surface of the first recess 52 toward the −Z side. The second opposing wall portion 57 is provided between the pair of first opposing wall portions 54 in the X direction. The −Z side end of the second opposing wall portion 57 is located on the +Z side of the second end surface 33 of the primary molded portion 30 . The inner peripheral surface 52 a of the first depression 52 is exposed facing the cavity 51 between the second end surface 33 and the −Z side end of the second opposing wall portion 57 . The circumferential position of the inner peripheral surface 52a exposed to the cavity 51 is between a pair of chords that define the shape of the second recess 53 in plan view.

As shown in FIG. 4 , the projection 60 is positioned farther in the X direction from the rotating shaft 14 than the recess 50 is. The protrusion 60 is arranged on the +X side of the recess 50 . The primary molded portion 30 has a second concave portion 34 recessed from the second end face 33 toward the +Z side at a position where the protrusion 60 is provided. The projection 60 is made of the second resin material that fills the second recess 34 . The protrusion 60 is part of the secondary molded portion 40 . The second concave portion 34 formed in the primary molded portion 30 is filled with the projection 60 that is a part of the secondary molded portion 40 , thereby preventing the secondary molded portion 40 from being separated from the primary molded portion 30 . can be suppressed.

A method of manufacturing the lock handle will now be described with reference to FIGS. 10-12. As shown in FIG. 10, the primary mold MD1 is a mold for molding the primary molding portion 30. As shown in FIG. In the primary mold MD1, insert molding is performed in which the rotary shaft 14 is preliminarily mounted inside.

The primary mold MD1 has an upper mold U1 and a lower mold L1. The upper mold U1 is arranged above the lower mold L1. The upper mold U1 opens and closes by moving up and down with respect to the lower mold L1. The primary mold MD1 has a cavity C1, which is a space in which the primary molded portion 30 is molded when the upper mold U1 and the lower mold L1 are clamped. The length of the cavity C1 in the Y direction is gradually shortened toward the +X side.

The upper mold U1 has a gate portion G1 for filling the molten first resin material into the cavity C1. The gate portion G1 is provided so as to open at the +X side end portion of the cavity C1. The gate portion G1 is arranged at the +X side end portion where the flat portion is provided in the primary forming portion 30 in consideration of the gate cut in the post-process. A jump gate method, a side gate method, a tunnel gate method, or the like can be selected as the gate portion G1. Depending on the selected gate method, the gate portion G1 may be provided on the lower die L1, or may be provided across both the upper die U1 and the lower die L1.

The lower mold L1 molds the surface facing the −Z side in the primary molding part 30 . The lower die L1 has a shaft holding portion 14M, a pin member 52M, and a pin member 34M. The shaft holding portion 14M is a hollow opening on the +Z side. The rotating shaft 14 is attached to the shaft holding portion 14M. A portion of the rotating shaft 14 protruding from the primary molded portion 30 is inserted and fitted into the shaft holding portion 14M. A bottom portion 15M of the shaft holding portion 14M supports the tip of the rotary shaft 14 inserted into the shaft holding portion 14M from the -Z side. The bottom portion 15M supports the tip of the rotating shaft 14 from the -Z side, so that the rotating shaft 14 can be positioned in the Z direction.

The pin member 52M forms the first recess 52 in the portion protruding into the cavity C1. The pin member 34M forms the second concave portion 34 at the portion protruding into the cavity C1. Since the pin members 34M and 52M protrude into the cavity C1, the first resin material filled in the cavity C1 is held by the pin members 34M and 52M by contraction force when solidified.

In the primary mold MD1, when the lower mold L1 to which the rotating shaft 14 is mounted and the upper mold U1 are clamped, the molten first resin material is filled into the cavity C1 from the gate portion G1. After the first resin material filled in the cavity C1 is cooled and solidified, the upper mold U1 is raised to open the mold. After the upper mold U1 is lifted, the ejector mechanism in the lower mold L1 is operated to release the primary molded body including the rotating shaft 14 and the primary molded portion 30 upward from the lower mold L1. Since the ejector mechanism is provided in the lower mold L1, the primary compact needs to stop on the lower mold L1 when the upper mold U1 is lifted and opened. Since the first resin material filled in the cavity C1 is held by the pin member 34M and the pin member 52M due to the shrinkage force when it solidifies, the primary molded body stops at the lower die L1 and is smoothly ejected by the ejector mechanism. It can be released from L1.

The primary molded body released from the lower mold L1 is held by a robot or the like and carried out to complete the primary molding. After the primary molding is completed, the gate connected to the primary molding is cut off to separate. After the primary molding is completed and the gate is separated, a primary molded portion 30 which is a part of the handle body 13 and has a rotating shaft region 31 provided with a rotating shaft 14 and an operation region 32 where a locking operation is performed. is molded. Since the length of the cavity C1 in the Y direction gradually decreases toward the +X side, the primary molded portion 30 is molded such that the thickness in the Y direction gradually decreases toward the +X side.

As shown in FIG. 11 , the secondary mold MD2 is a mold for molding the secondary molded portion 40 . In the secondary mold MD2, insert molding is performed in which a primary molded body including the rotary shaft 14 and the primary molded portion 30 is preliminarily mounted inside.

The secondary mold MD2 has an upper mold U2 and a lower mold L2. The upper mold U2 is arranged above the lower mold L2. The upper mold U2 opens and closes by moving up and down with respect to the lower mold L2. The secondary mold MD2 has a cavity C2, which is a space in which the secondary molded portion 40 is molded when the upper mold U2 and the lower mold L2 are clamped. The length of the cavity C2 in the Y direction gradually increases toward the +X side.

The upper mold U2 has a gate portion G2 for filling the cavity C2 with the molten second resin material. The gate part G2 is provided with an opening at the −X side end of the cavity C2 because the functional parts related to the rotation of the spoon 12 are arranged and the gate part G2 is inconspicuous in appearance. A jump gate method, a side gate method, a tunnel gate method, or the like can be selected as the gate portion G2. As for the gate portion G2 in the secondary molded portion 40 exposed to the outside, a jump gate method is preferable because the gate marks after gate cutting are the least conspicuous.

The lower die L2 has a rotating shaft accommodating portion 31M and a shaft member 50M. The rotating shaft accommodating portion 31M is a hollow opening on the +Z side. The rotating shaft accommodating portion 31M accommodates the rotating shaft area 31 including the rotating shaft 14 . The rotating shaft accommodating portion 31M has a shaft holding portion 36M. The shaft holding portion 36M is a hollow opening on the +Z side. The rotating shaft 14 in the primary molded body is attached to the shaft holding portion 36M. A portion of the rotary shaft 14 protruding from the primary molded portion 30 is inserted and fitted into the shaft holding portion 36M. By fitting the rotating shaft 14 to the shaft holding portion 36M, the primary molded body is positioned between the lower die L2 and the shaft holding portion 36M.

The rotating shaft region 31 accommodated in the rotating shaft accommodating portion 31M is separated from the cavity C2. A cavity C<b>2 is formed around an operation area 32 separated from the rotation shaft area 31 . A bottom portion 35M of the rotating shaft accommodating portion 31M supports the tip of the rotating shaft 14 inserted into the rotating shaft accommodating portion 31M from the -Z side. Since the bottom portion 35M supports the tip of the rotating shaft 14 from the -Z side, the rotating shaft 14 can be positioned in the Z direction.

The shaft member 50M forms a recess 50 that fits into the first recess 52 at the tip portion. The shaft member 50M has a cylindrical shape centered on the central axis CM. The shaft member 50M is arranged at a position where the central axis CM becomes the central axis C of the handle body 13 in the lower die L2. The shaft member 50M forms the concave portion 50 at the portion that protrudes into the cavity C2. The shaft member 50M is engaged with the lower die L2 from the -Z side at the collar portion 61 at the end on the -Z side. The collar portion 61 is in contact with the lower die L2 at the anti-rotation portion 62 . The collar portion 61 contacts the lower mold L2 at the anti-rotation portion 62, whereby the shaft member 50M is positioned in the circumferential direction around the central axis CM with respect to the lower mold L2.

Since the molded first resin material and the second resin material shrink after being solidified, the dimension of the shaft member 50M is formed large in anticipation of the shrinkage rates of the first resin material and the second resin material. In the following description, the dimensions of the recess 50 and the dimensions of the shaft member 50M where the recess 50 is formed are assumed to be the same without considering the shrinkage factor.

As shown in FIG. 12, the shaft member 50M has a main body portion 51M, a prism portion 58M, a stepped portion 53M, a stepped portion 57M, and a groove portion 56M.

The body portion 51M is held by the lower die L2 in the region on the -Z side. The region on the +Z side of the body portion 51M is positioned on the +Z side of the position of the molding surface 41M that molds the first end surface 41 of the secondary molding portion 40 in the lower die L2. A cavity 51 is formed at a portion of the body portion 51M located on the +Z side of the molding surface 41M.

The prism portion 58M is located at the +Z side tip of the shaft member 50M. The prismatic portion 58M is formed in a quadrangular prism shape by removing both side ends in the X direction and both side ends in the Y direction from the columnar main body portion 51M. The prism portion 58M has side surfaces 54M parallel to the YZ plane on both sides in the X direction. The prism portion 58M has side surfaces 59M parallel to the XZ plane on both sides in the Y direction.

The stepped portion 53M is arranged on both sides in the X direction with the prism portion 58M interposed therebetween. In FIG. 12, the stepped portion 53M arranged on the -X side is illustrated, and the stepped portion 53M arranged on the +X side is omitted. The step portion 53M is a step between the main body portion 51M and the prism portion 58M, and is formed facing the +Z side. The step portion 53M forms the second recess 53. As shown in FIG. The stepped portion 53M forms the −Z side end face of the first opposing wall portion 54 . A distance H1 in the Z direction from the molding surface 41M to the stepped portion 53M is the same as the depth of the second recess 53. As shown in FIG. A first opposing wall portion 54 is formed in a space surrounded by the inner peripheral surface 52a of the first recess 52, the stepped portion 53M, and the side surface 54M.

The stepped portion 57M is arranged on both sides in the Y direction with the prismatic portion 58M interposed therebetween. In FIG. 12, the stepped portion 57M arranged on the -Y side is illustrated, and the stepped portion 57M arranged on the +Y side is omitted. The step portion 57M is a step between the main body portion 51M and the prism portion 58M, and is formed facing the +Z side. The stepped portion 57M forms the end surface of the second opposing wall portion 57 on the -Z side. The position of the stepped portion 57M in the Z direction is located on the +Z side of the second end face 33 of the primary molded portion 30 . A second opposing wall portion 57 is formed in a space surrounded by the inner peripheral surface 52a of the first recess 52, the stepped portion 57M, and the side surface 59M.

An outer peripheral surface 62M located on the Y-direction outer side of the stepped portion 57M is flush with the outer peripheral surface of the main body portion 51M. The outer peripheral surface 62M is fitted with the inner peripheral surface 52a of the first recess 52 in the primary molding portion 30 when the primary molding portion 30 is attached to the lower die L2. By fitting the outer peripheral surface 62M of the shaft member 50M to the inner peripheral surface 52a of the primary molding portion 30, the primary molded body is positioned between the lower mold L2 and the shaft member 50M and is stably supported by the lower mold L2. . Since the primary molded body is stably supported by the lower mold L2, the dimensions of the cavity C2 formed between the primary molded part 30 and the lower mold L1 can be maintained.

The primary compact is positioned in the X direction and the Y direction with respect to the lower die L2 by fitting the rotating shaft 14 to the shaft holding portion 36M and fitting the first recess 52 to the shaft member 50M. In the case where the inner peripheral surface 52a and the outer peripheral surface 62M of the first recess 52 have a draft angle that tapers toward the +Z side, when the first recess 52 is fitted with the shaft member 50M, the shaft member 50M is primarily The compact is supported from below. The shaft member 50M supports the primary molded body from below, so that the primary molded body is positioned in the X direction, the Y direction and the Z direction with respect to the lower die L2.

When the primary molded body is attached to the lower die L2, the +Z side end face 55M of the prismatic portion 58M is located on the -Z side of the bottom of the first recess 52. As shown in FIG. A connecting wall portion 55 is formed in a space surrounded by the bottom portion of the first recess 52, the inner peripheral surface 52a, and the end surface 55M. The groove portion 56M extends in the X direction and opens to the end surface 55M of the prism portion 58M. The groove portion 56M penetrates the prism portion 58M in the X direction. The groove portion 56M forms the rib portion 56. As shown in FIG.

In the secondary mold MD2, the primary molded body having the rotating shaft 14 and the primary molding part 30 is attached to the lower mold L2, and when the lower mold L2 and the upper mold U2 are clamped, the molten second resin The material is filled into the cavity C2 from the gate portion G2. Since the cavity C2 is separated from the rotation axis region 31 located on the -Z side at the end on the -X side, the second resin material introduced into the cavity C2 is a space located on the +Z side of the primary molded body. After flowing, it flows toward the space located on the -Z side of the primary compact. Since the primary molded body is stably supported by fitting with the shaft member 50M and the dimensions of the cavity C2 are maintained, the cavity C2 is smoothly filled with the second resin material.

The second resin material that flows through the cavity C2 and reaches the shaft member 50M flows into the first recess 52 via the stepped portion 53M. The second resin material that has flowed into the first depression 52 flows from the space where the first opposing wall portion 54 is formed into the space where the second opposing wall portion 57 is formed via the stepped portion 57M. The second resin material that has flowed into the space where the first opposing wall portion 54 is formed and the space where the second opposing wall portion 57 is formed flows into the space where the rib portion 56 is formed and the space where the connecting wall portion 55 is formed. flow into

The second resin material that has flowed through the cavity C2 and reached the second recess 34 in the primary molded portion 30 flows into and fills the second recess 34 . By cooling and solidifying the second resin material filled in the cavity C2, a secondary molded portion 40 is molded that covers the entire periphery of the primary molded portion 30 including the operation region 32 excluding the rotation shaft region 31. . Since the length of the cavity C2 in the Y direction gradually increases toward the +X side, the secondary molded portion 40 is molded so that the thickness in the Y direction gradually increases toward the +X side. In the concave portion 50 of the formed secondary molded portion 40, a cavity 51, a first recess 52, a second recess 53, a pair of first opposing wall portions 54, a connecting wall portion 55, a rib portion 56, and a pair of second opposing A wall portion 57 is molded. In the concave portion 50, the inner peripheral surface 52a of the primary molded portion 30 that fits with the outer peripheral surface 62M of the shaft member 50M is exposed facing the cavity 51. The inner peripheral surface 52a is centered on the central axis C extending in the Z direction. Since it extends in the circumferential direction, it is invisible when viewed from the -Z side, and the exposed inner peripheral surface 52a is invisible from the -Z side, thereby suppressing deterioration of the design of the lock handle 11. can.

The secondary molded portion 40 is molded by cooling and solidifying the second resin material filled in the cavity C2. The second resin material that has flowed into the first recess 52 in the primary molded portion 30 of the secondary molded portion 40 is held by the shaft member 50M due to the shrinkage force when it solidifies. After the secondary molded portion 40 is molded, the upper mold U2 is lifted to open the mold. After the upper mold U2 is lifted, the ejector mechanism in the lower mold L2 is operated to release the secondary molded body including the rotating shaft 14, the primary molded part 30 and the secondary molded part 40 from the lower mold L2 upward. Since the second resin material filled in the cavity C2 is held by the shaft member 50M due to the shrinkage force when it solidifies, the secondary molded body stops at the lower mold L2 and is smoothly separated from the lower mold L2 by the ejector mechanism. can be modeled.

The secondary molded body released from the lower mold L2 is held by a robot or the like and carried out to complete the secondary molding. After the secondary molding is completed, the gate connected to the secondary molded body is cut and separated. After the secondary molding is completed and the gate is separated, the locking handle 11, which is a secondary molded body including the rotary shaft 14, the primary molded portion 30 and the secondary molded portion 40, is obtained.

In the locking handle 11, since the rotation shaft 14 on the -X side is held by the shaft holding portion 36M during molding of the second resin, the +X side of the primary molded portion 30 is easily displaced. Even if the primary molded portion 30 is displaced in the Y direction in the cavity C2 during molding of the second resin, the thickness of the primary molded portion 30 in the Y direction gradually decreases toward the +X side. , the dimensions of the cavity C2 are sufficiently ensured. As a result, the thickness of the secondary molded portion 40 in the Y direction is sufficiently secured on the +X side downstream of the supplied second resin, so the thickness of the secondary molded portion 40 becomes thin on the +X side. Also, the primary molded portion 30 is not exposed, and the design can be improved.

In the locking handle 11, the Y-direction thickness of the secondary molded portion 40 gradually increases toward the +X side. This prevents the thickness of the secondary molded portion 40 from being reduced and the primary molded portion 30 from being exposed on the +X side, thereby improving the design.

In the lock handle 11, since the handle body 13 includes the primary molded portion 30 and the secondary molded portion 40 that covers at least the operation area 32 of the primary molded portion 30 over the entire circumference, the manufacturing method of the lock handle 11 includes: Compared to the case where the handle body 13 is molded by the primary molding portion 30, the thickness of each molding can be reduced. By reducing the thickness at each molding, molding defects such as sink marks can be suppressed and the design can be improved.

In the lock handle 11 , the primary molded portion 30 has the second recess 34 and the secondary molded portion 40 has the projection 60 filled in the second recess 34 , so that the secondary molded portion 40 is separated from the primary molded portion 30 . Peeling can be suppressed.

In the method of manufacturing the lock handle 11, the secondary molded portion 40 covers at least the operation area 32 of the primary molded portion 30 over the entire circumference. The secondary molded part 40 can improve the design by covering molding defects such as sink marks.

In the method for manufacturing the lock handle 11, the rotation shaft 14 is held by the shaft holding portion 36M, and the outer peripheral surface 62M of the shaft member 50M is fitted into the first recess 52 of the primary molding portion 30, so primary molding for the lower mold L2 is performed. The height, X-direction position, and Y-direction position of the portion 30 can be maintained. By maintaining the height, the X-direction position, and the Y-direction position of the primary molding part 30 with respect to the lower mold L2, the filling pressure of the second resin material during secondary molding causes the primary molding part 30 to move with respect to the lower mold L2. It is possible to suppress the positional deviation and the deviation of the relative positional relationship between the primary molded portion 30 and the secondary molded portion 40 .

In the lock handle 11 and the method for manufacturing the lock handle 11, the mechanical strength of the primary molded portion 30 and the secondary molded portion 40 can be ensured by including the glass reinforcing material in the first resin material and the second resin material. . In the locking handle 11 and the method of manufacturing the locking handle 11, the second resin material contains glass reinforcing material in a smaller amount than the first resin material, so that the handle has high mechanical strength and excellent design and weather resistance. A body 13 is obtained.

Although the preferred embodiments according to the present disclosure have been described above with reference to the accompanying drawings, it goes without saying that the present disclosure is not limited to such examples. The various shapes, combinations, and the like of the constituent members shown in the above examples are examples, and can be variously changed based on design requirements and the like without departing from the gist of the present disclosure.

The lock handle 11 described in the embodiment is not limited to the configuration in which the secondary molded portion 40 covers the entire circumference of the primary molded portion 30 except for the rotating shaft region 31 . The lock handle 11 may have a configuration in which the secondary molded portion 40 covers the rotation shaft area.

The lock handle 11 described in the embodiment is not limited to a structure that is a part of the crescent lock. As the locking handle 11, it is applicable to handles other than crescent locks, such as a cam latch handle and a gremon handle.

DESCRIPTION OF SYMBOLS 1... Locking device 11... Locking handle 13... Handle body 14... Rotating shaft 20... Base part 30... Primary molding part 31... Rotating shaft area 32... Operation area 33... Second end surface 34... Second concave portion 40 Secondary molded portion 41 First end surface 50 Concave portion 50M Shaft member 51 Cavity 52 First concave portion 53 Second concave portion 54 First opposing wall portion 55... Connecting wall part, 56... Rib part, 57... Second opposing wall part, 60... Protrusion, C... Central axis, C2... Cavity, J... Axis, MD1... Primary mold, MD2... Secondary mold

Claims (5)

With a handle body extending in the longitudinal direction,
The handle body is
a primary molded portion molded using a first resin material;
a secondary molded portion molded using a second resin material and provided outside the primary molded portion;
The locking handle, wherein the thickness of the primary molded portion in a first direction orthogonal to the longitudinal direction is gradually reduced toward one side in the longitudinal direction. a rotary shaft protruding from the handle body in one of the longitudinal directions and a second direction orthogonal to the first direction;
2. The locking handle according to claim 1, wherein the thickness of said primary molded portion in said first direction gradually decreases along said longitudinal direction as it moves away from said rotating shaft. 3. The lock handle according to claim 1, wherein the thickness of the secondary molded portion in the first direction gradually increases toward one side in the longitudinal direction. 4. A lock handle according to any one of claims 1 to 3, wherein the first resin material comprises glass reinforcing material. 5. A lock handle according to any one of claims 1 to 4, wherein the second resin material includes a smaller amount of added glass reinforcement than the first resin material.

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