JP7457041B2 - Lock handle and lock handle manufacturing method - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a lock handle and a method of manufacturing a lock handle.

Patent document 1 discloses a crescent lock as a locking device in which the lock is activated by operating a locking handle. The locking handle disclosed in patent document 1 rotates around a rotating shaft. The locking handle disclosed in patent document 1 is a rod-shaped resin molded product.

Japanese Patent Application Publication No. 2008-267032

If the lock handle is molded from a single resin, molding defects such as sink marks are likely to occur in the thick portion. In order to eliminate the presence of thick portions in resin molded products, a hollow portion is provided to make the wall thickness uniform. When a hollow portion is provided in the locking handle, the design quality is degraded.

The present disclosure has been made in consideration of the above points, and an object of the present disclosure is to provide a locking handle and a method for manufacturing the locking handle with improved design.

A first aspect of the present disclosure includes a handle main body extending in the longitudinal direction, and a rotating shaft extending in an axial direction perpendicular to the longitudinal direction and protruding from the handle main body to one side in the axial direction, The handle body has a rotating shaft region in which the rotating shaft is provided, and an operation region that is arranged apart from the rotating shaft region in the longitudinal direction and in which a locking operation is performed, and the handle main body includes:
a primary molded part molded using a first resin material; a primary molded part molded using a second resin material that covers at least the operating area of the primary molded part over the entire circumference; a secondary molded part that covers an area facing the other side in the axial direction and areas located on both sides in a width direction perpendicular to the long axis direction and the axial direction and connected to the operation area ; It's a handle.

1 is a front view of a locking device having a locking handle of the present disclosure; FIG. It is an exploded perspective view of the locking handle seen from the spoon side. FIG. 3 is a sectional view of the locking handle perpendicular to the Y direction at a position including the axis. FIG. 3 is a plan view of the lock device viewed from the Z direction. FIG. 3 is a plan view of the recessed portion viewed from the -Z side. FIG. 3 is a cross-sectional view of the handle body at a position including the central axis and perpendicular to the Y direction. FIG. 3 is a cross-sectional view of the handle body at a position including the central axis and perpendicular to the X direction. FIG. 3 is a sectional view of a primary mold for molding a primary molded part. FIG. 3 is a cross-sectional view of a secondary mold for forming a secondary molded part. It is a perspective view which expanded the +Z side end part of a shaft member.

Embodiments of a locking handle and a method for manufacturing a locking handle of the present disclosure will be described below with reference to FIGS. 1 to 10. The following embodiments illustrate one aspect of the present disclosure, do not limit the present disclosure, and can be arbitrarily modified within the scope of the technical idea of the present disclosure. In the drawings below, in order to make each structure easier to understand, the scale, number, etc. of each structure are different from the actual structure.

As shown in FIG. 1, a lock device 1 is attached to a matching stile 2 of an internal sliding door in a sash. The locking device 1 is fixed when it is screwed to the matching 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 pedestal portion 20. The pedestal portion 20 is fixed to the matching frame 2 using mounting screws 3. 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. As shown in FIG. 2, the handle body 13 extends in the longitudinal direction. The rotating shaft 14 extends in the direction of an axis J orthogonal to the longitudinal direction. The rotating shaft 14 protrudes from the handle body 13 to one side in the axis J direction. The locking handle 11 is a molded body in which the rotating shaft 14 and the handle body 13 are integrally molded using insert molding in which the rotating shaft 14 is an insert member.

In the drawings, the long axis direction in which the handle body 13 extends is the X direction, the direction of the axis J in which the rotating shaft 14 extends is the Z direction, and the width direction of the handle body 13, which is perpendicular to the X and Z directions, is the Y direction. do. In the X direction, the side of the handle body 13 where the rotating shaft 14 is arranged is defined as the -X side. In the Z direction, the side where the rotating shaft 14 protrudes from the handle body 13 is defined as the -Z side. -Z side corresponds to one side in the axial direction. The +Z side corresponds to the other side in the axial direction.

The spoon 12 connects the inner shoji and the outer shoji when engaged with the hooks of the outer shoji in the sash. 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 rotating shaft 14 is inserted into 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. The protrusion 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 centering on the axis J. When the through hole 12B is fitted into the protrusion 13A, the spoon 12 is fixed to the handle body 13 in the circumferential direction.

The rotating shaft 14 is supported by the pedestal portion 20 so as to be rotatable about an axis J. The handle body 13 rotates with respect to the base portion 20 around the rotation axis 14 . When the handle body 13 is operated and the handle body 13 rotates around the rotating shaft 14, the spoon 12 rotates integrally with the handle body 13. When the spoon 12 rotates about the rotating shaft 14, it engages with the hook of the outer shoji in the sash. The spoon 12 connects the inner shoji and the outer shoji when engaged with the hooks of the outer shoji in the sash. 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 open.

The handle body 13 has a primary molded part 30, a secondary molded part 40, a recess 50, and a protrusion 60. The primary molded portion 30 is molded using a first resin material. As shown in FIG. 3, the primary molded part 30 constitutes a primary molded body integrally molded with the rotating shaft 14. The primary molded part 30 constitutes a primary molded body integrally molded with the rotary shaft 14 when molded using insert molding using the rotary shaft 14 as an insert member. The rotating shaft 14 is arranged near the -X side end of the primary molding section 30. The protrusions 13A are arranged adjacent to each other on the +X side of the rotating shaft 14 in the primary molding part 30.

The locking handle 11 has a rotating shaft area 31 and an operation area 32. The rotating shaft area 31 is an area where the rotating shaft 14 is provided. The rotating shaft region 31 is a region in which, in addition to the rotating shaft 14, the spoon 12 and functional parts related to the rotation of the spoon 12 are arranged. The primary molded portion 30 is exposed facing the −Z side in a rotation shaft region 31 where the rotation 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 part 40 is molded using a second resin material. The secondary molded part 40 covers the entire circumference of a specific area in the primary molded part 30. The secondary molding section 40 covers the entire circumference of the operation area 32 in the primary molding section 30 . The secondary molded part 40 constitutes a secondary molded body integrally molded with the primary molded body including the rotating shaft 14 and the primary molded part 30. The secondary molded object is a locking handle 11. The secondary molded part 40 constitutes a secondary molded body integrally molded with the primary molded body when molded using 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 materials. The first resin material and the second resin material may be the same type of resin material with different additives, or may be resin materials with different additive amounts. When the same type of resin material is used as the first resin material and the second resin material, setting the molding conditions when injection molding the primary molded part 30 and the molding conditions when injection molding the secondary molded part 40. can be facilitated. When the same type of resin material is used as the first resin material and the second resin material, the difference in linear expansion coefficient between the primary molded part 30 and the secondary molded part 40 can be reduced. By reducing the difference in linear expansion coefficients between the primary molded part 30 and the secondary molded part 40, it is possible to suppress the secondary molded part 40 from peeling off from the primary molded part 30 due to the difference in linear expansion coefficients. As the first resin material and the second resin material, it is preferable to use, for example, synthetic resin such as polyamide resin or nylon.

As the additive, it is preferable to use a reinforcing material in order to ensure mechanical strength. As the reinforcing material, glass fiber, glass beads, talc, calcium carbonate, etc. can be used. From the viewpoint of mechanical strength and availability, glass fiber is preferred as the reinforcing material. When using glass fiber as a reinforcing material, it is preferable to add a large amount of glass fiber to the primary molded portion 30 that becomes the base material of the lock handle 11. When the amount of glass fiber added is large, the glass fiber becomes fluffy, resulting in a decrease in design properties and a decrease in weather resistance. It is preferable that the amount of glass fiber added in the secondary molded part 40 exposed to the surface and used as a design surface is smaller than the amount of glass fiber added in the primary molded part 30.

The primary molded portion 30 is made of nylon containing 50% glass fiber as a glass reinforcement. The secondary molded part 40 is made of nylon containing 30% glass fiber as a glass reinforcement material. Since 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, it has high mechanical strength and good design and weather resistance. An excellent handle body 13 is obtained.

The recess 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 recessed portion 50 is recessed from the first end surface 41 of the handle body 13 on the −Z side toward the +Z side. The first end surface 41 is an end surface of the secondary molded part 40. As shown in FIG. 4, the recess 50 is located at the center of the handle body 13 in the Y direction. The recess 50 is disposed at a position facing the pedestal 20 when the handle body 13 is in the locked position shown by the two-dot chain line and in the unlocked position shown by the solid line. By disposing the recess 50 at a position facing the pedestal 20 in each of the locked position and the unlocked position, the recess 50 can be visually recognized in each of the locked position and the unlocked position. It can be suppressed. Deterioration in design due to the presence of the recess 50 is suppressed.

As shown in FIGS. 5, 6, and 7, the recess 50 includes a cavity 51, a first depression 52, a second depression 53, a pair of first opposing walls 54, a connecting wall 55, a rib 56, and a pair of It has a second opposing wall portion 57 . The second recess 53, the pair of first opposing walls 54, the connecting wall 55, the ribs 56, and the pair of second opposing walls 57 are part of the secondary molded part 40 formed 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 molded portion 30 . The first depression 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 depression 52 and extends toward the +Z side. The cavity 51 extends to a region surrounded by the first recess 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 a circular arc having the same diameter as the first depression 52 and a chord extending in the Y direction of the circular arc. The second recess 53 has a depth smaller than the thickness of the secondary molded part 40 located on the -Z side with respect to the primary molded part 30.

The pair of first opposing walls 54 are arranged to face each other on both sides of the cavity 51 in the X direction. The first opposing wall portion 54 extends from the bottom of the second depression 53 toward the +Z side along the inner peripheral surface of the first depression 52 . The shape of the first opposing wall portion 54 in plan view is the same as the shape of the second recess 53 in plan view. The connecting wall portion 55 is located at the bottom of the first recess 52 and connects the +Z side ends of the pair of first opposing wall portions 54. The connecting wall portion 55 has a circular shape in plan view having the same diameter as the first recess 52 . The rib portion 56 has a rib shape extending in the X direction and has 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 to face each other on both sides of the cavity 51 in the Y direction. The second opposing wall portion 57 extends from both ends of the connecting wall portion 55 in the width direction along the inner circumferential 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 with respect to the second end surface 33 of the primary molded portion 30. An inner peripheral surface 52a of the first recess 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 circumferential surface 52a exposed in the cavity 51 is between a pair of chords that define the shape of the second depression 53 in plan view.

As shown in FIG. 3, the protrusion 60 is located further away from the rotating shaft 14 in the X direction than the recess 50. The protrusion 60 is arranged on the +X side with respect to the recess 50. The primary molded part 30 has a second recess 34 recessed from the second end surface 33 toward the +Z side at a position where the protrusion 60 is provided. The protrusion 60 is formed of a second resin material filled in the second recess 34 . The protrusion 60 is a part of the secondary molded part 40. The second recess 34 formed in the primary molded part 30 is filled with the protrusion 60 that is a part of the secondary molded part 40, thereby preventing the secondary molded part 40 from peeling off from the primary molded part 30. It can be suppressed.

A method of manufacturing a locking handle will be described with reference to FIGS. 8 to 10. As shown in FIG. 8, the primary mold MD1 is a mold for molding the primary molded portion 30. As shown in FIG. In the primary mold MD1, insert molding is performed in which the rotating shaft 14 is installed inside in advance.

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 that is a space in which the primary molding part 30 is molded when the upper mold U1 and the lower mold L1 are clamped.

The upper mold U1 has a gate portion G1 for filling the cavity C1 with the molten first resin material. The gate portion G1 is provided to open at the +X side end of the cavity C1. The gate portion G1 is arranged at an end portion on the +X side where a flat portion is provided in the primary forming portion 30 in consideration of gate cutting in a post-process. As the gate portion G1, a jump gate method, a side gate method, a tunnel gate method, etc. can be selected. Depending on the selected gate method, the gate portion G1 may be provided on the lower mold L1, or may be provided spanning both the upper mold U1 and the lower mold L1.

The lower mold L1 molds the surface facing the -Z side in the primary molding section 30. The lower mold L1 includes a shaft holding portion 14M, a pin member 52M, and a pin member 34M. The shaft holding portion 14M is a cavity that opens 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 into and fitted into the shaft holding portion 14M. The bottom portion 15M of the shaft holding portion 14M supports the tip of the rotating shaft 14 inserted into the shaft holding portion 14M from the −Z side. By supporting the tip of the rotating shaft 14 from the −Z side by the bottom portion 15M, the rotating shaft 14 can be positioned in the Z direction.

The pin member 52M forms a first recess 52 in a portion protruding into the cavity C1. The pin member 34M forms a second recess 34 in a portion that projects into the cavity C1. Since the pin member 34M and the pin member 52M protrude into the cavity C1, the first resin material filled in the cavity C1 is held by the pin member 34M and the pin member 52M by the 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 and opened. After the upper mold U1 is raised, 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 part 30 upward from the lower mold L1. Since the ejector mechanism is provided in the lower mold L1, the primary molded body needs to remain in the lower mold L1 when the upper mold U1 is raised and opened. Since the first resin material filled in the cavity C1 is held by the pin member 34M and the pin member 52M by the contraction force when solidified, the primary molded body remains in the lower mold L1 and is smoothly ejected from the lower mold by the ejector mechanism. It can be released from the mold from L1.

The primary molded body released from the lower mold L1 is held and carried out by a robot or the like, and the primary molding is completed. After the primary molding is completed, the gate connected to the primary molded body is cut and separated. After the primary molding is completed and the gate is separated, a primary molded part 30 that is a part of the handle body 13 and has a rotating shaft area 31 where the rotating shaft 14 is provided and an operating area 32 where a locking operation is performed. is formed.

As shown in FIG. 9, the secondary mold MD2 is a mold for molding the secondary molded portion 40. As shown in FIG. In the secondary mold MD2, insert molding is performed in which a primary molded body including the rotating shaft 14 and the primary molded part 30 is mounted inside in advance.

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 relative to the lower mold L2. The secondary mold MD2 has a cavity C2 that is a space in which the secondary molding part 40 is molded when the upper mold U2 and the lower mold L2 are clamped.

The upper mold U2 has a gate portion G2 for filling the cavity C2 with the molten second resin material. The gate portion G2 is provided with an opening at the end on the −X side of the cavity C2 because functional parts related to the rotation of the spoon 12 are arranged therein so that it is not visually noticeable. As the gate portion G2, a jump gate method, a side gate method, a tunnel gate method, etc. can be selected. As the gate portion G2 in the secondary molded portion 40 exposed to the outside, a jump gate type is preferable because gate marks after gate cutting are least noticeable.

The lower mold L2 has a rotating shaft accommodating portion 31M and a shaft member 50M. The rotating shaft housing portion 31M is a cavity that opens on the +Z side. The rotating shaft accommodating portion 31M accommodates the rotating shaft region 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 cavity that opens on the +Z side. The rotating shaft 14 in the primary molded body is mounted on the shaft holding portion 36M. A portion of the rotating shaft 14 protruding from the primary molded portion 30 is inserted into and fitted into the shaft holding portion 36M. By fitting the rotating shaft 14 into the shaft holder 36M, the primary molded body is positioned between the lower mold L2 and the shaft holder 36M.

The rotating shaft region 31 accommodated in the rotating shaft accommodating portion 31M is divided into a cavity C2. The cavity C2 is formed around the rotation shaft region 31 and the operation region 32 partitioned. The 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. The bottom portion 35M 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 shaft member 50M is fitted at its tip into the first recess 52 to form the recess 50. The shaft member 50M is cylindrical and centered on the central axis CM. The shaft member 50M is positioned in the lower die L2 at a position where the central axis CM is the central axis C of the handle body 13. The shaft member 50M forms the recess 50 in the portion that protrudes into the cavity C2. The shaft member 50M engages with the lower die L2 from the -Z side at the flange 61 at the end on the -Z side. The flange 61 contacts the lower die L2 at the anti-rotation portion 62. The flange 61 contacts the lower die L2 at the anti-rotation portion 62, positioning the shaft member 50M in the circumferential direction centered on the central axis CM relative to the lower die L2.

Since the first resin material and the second resin material after molding shrink after solidifying, the dimensions of the shaft member 50M are made large in consideration of the shrinkage rates of the first resin material and the second resin material. In the following description, the shrinkage rate is not taken into account, and the dimensions of the recess 50 and the dimensions of the shaft member 50M where the recess 50 is formed are the same.

As shown in FIG. 10, the shaft member 50M includes a main body portion 51M, a prismatic portion 58M, a stepped portion 53M, a stepped portion 57M, and a groove portion 56M.

The −Z side region of the main body portion 51M is held by the lower die L2. The +Z side region of the main body portion 51M is located on the +Z side with respect to the position of the molding surface 41M that molds the first end surface 41 in the secondary molding section 40 in the lower die L2. In the main body portion 51M, a cavity 51 is formed at a location located on the +Z side with respect to the position of the molding surface 41M.

The prismatic portion 58M is located at the tip of the shaft member 50M on the +Z side. The prismatic portion 58M is formed in the shape of a square column, with both end portions in the X direction and both end portions in the Y direction missing from the cylindrical main body portion 51M. The prismatic portion 58M has side surfaces 54M parallel to the YZ plane on both sides in the X direction. The prismatic portion 58M has side surfaces 59M parallel to the XZ plane on both sides in the Y direction.

The step portions 53M are arranged on both sides of the prismatic portion 58M in the X direction. In FIG. 10, the step portion 53M located on the −X side is illustrated, and the illustration of the step portion 53M located on the +X side is omitted. The step portion 53M is a step between the main body portion 51M and the prismatic portion 58M, and is formed facing the +Z side. The step portion 53M forms the second recess 53. The step portion 53M forms the −Z side end surface of the first opposing wall portion 54. The 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. The first opposing wall portion 54 is formed in a space surrounded by the inner circumferential surface 52a of the first recess 52, the stepped portion 53M, and the side surface 54M.

The stepped portions 57M are arranged on both sides of the prismatic portion 58M in the Y direction. In FIG. 10, the step portion 57M located on the −Y side is illustrated, and the illustration of the step portion 57M located on the +Y side is omitted. The step portion 57M is a step between the main body portion 51M and the prismatic portion 58M, and is formed facing the +Z side. The step portion 57M forms the −Z side end surface of the second opposing wall portion 57. The position of the stepped portion 57M in the Z direction is located on the +Z side of the second end surface 33 of the primary molded portion 30. The second opposing wall portion 57 is formed in a space surrounded by the inner circumferential surface 52a of the first recess 52, the stepped portion 57M, and the side surface 59M.

An outer circumferential surface 62M located on the outside in the Y direction of the stepped portion 57M is flush with the outer circumferential 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 section 30 when the primary molding section 30 is attached to the lower mold L2. By fitting the outer circumferential surface 62M of the shaft member 50M to the inner circumferential surface 52a of the primary molding part 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. Ru. By stably supporting the primary molded body on 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 molded body is positioned in the X direction and the Y direction with respect to the lower die L2 by fitting the rotating shaft 14 into the shaft holding portion 36M and fitting the first recess 52 into the shaft member 50M. When the inner circumferential surface 52a and the outer circumferential surface 62M of the first recess 52 have a draft that tapers toward the +Z side, when the first recess 52 is fitted with the shaft member 50M, the shaft member 50M is Support the molded body from below. By supporting the primary molded body from below, the shaft member 50M positions the primary molded body in the X direction, Y direction, and Z direction with respect to the lower die L2.

When the primary molded body is attached to the lower mold L2, the +Z side end surface 55M of the square column portion 58M is located on the −Z side with respect to the bottom of the first recess 52. A connecting wall portion 55 is formed in a space surrounded by the bottom 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 at the end surface 55M of the prismatic portion 58M. The groove portion 56M penetrates the prismatic portion 58M in the X direction. The groove portion 56M forms the rib portion 56.

In the secondary mold MD2, the primary molded body having the rotating shaft 14 and the primary molded 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 part G2. Since the cavity C2 is separated from the rotating shaft region 31 located on the -Z side at the end on the -X side, the second resin material introduced into the cavity C2 is divided into 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 molded body. The primary molded body is stably supported by being fitted with the shaft member 50M, and the dimensions of the cavity C2 are maintained, so the second resin material is smoothly filled into the cavity C2.

The second resin material that has flowed through the cavity C2 and reached 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 recess 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 molded and the space where the second opposing wall portion 57 is molded flows into the space where the rib portion 56 is molded and the space where the connecting wall portion 55 is molded. flows into.

The second resin material that has flowed through the cavity C2 and reached the second recess 34 in the primary molded part 30 flows into the second recess 34 and is filled therein. When the second resin material filled in the cavity C2 is cooled and solidified, a secondary molded part 40 is formed that covers the entire circumference of the primary molded part 30 including the operation area 32 excluding the rotating shaft area 31. . In the recessed part 50 of the molded secondary molded part 40, a cavity 51, a first depression 52, a second depression 53, a pair of first opposing walls 54, a connecting wall 55, a rib part 56, and a pair of second opposing walls are formed. Wall portion 57 is molded. In the recess 50, the inner circumferential surface 52a of the primary molded part 30 that is fitted with the outer circumferential surface 62M of the shaft member 50M is exposed facing the cavity 51, but the inner circumferential surface 52a is centered on the central axis C extending in the Z direction. Since the exposed inner circumferential surface 52a extends in the circumferential direction, it is invisible even when viewed from the -Z side. By making the exposed inner circumferential surface 52a invisible from the -Z side, deterioration in the design of the locking handle 11 can be suppressed. Can be done.

The secondary molded part 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 molding part 30 of the secondary molding part 40 is held by the shaft member 50M by the contraction force when solidified. After the secondary molding part 40 is molded, the upper mold U2 is raised and opened. After the upper mold U2 is raised, 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 upward from the lower mold L2. Since the second resin material filled in the cavity C2 is held by the shaft member 50M by the contraction force during solidification, the secondary molded body remains in the lower mold L2 and is smoothly separated from the lower mold L2 by the ejector mechanism. It can be molded.

The secondary molded body released from the lower mold L2 is held and carried out by a robot or the like, and the secondary molding is completed. 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 rotating shaft 14, the primary molded part 30, and the secondary molded part 40, is obtained.

In the locking handle 11, the handle body 13 includes a primary molded part 30 and a secondary molded part 40 that covers at least the operating area 32 of the primary molded part 30 over the entire circumference, so in the method for manufacturing the locking handle 11, Compared to the case where the handle body 13 is molded by the primary molding part 30, the wall thickness can be reduced during each molding process. By reducing the wall thickness during each molding process, molding defects such as sink marks can be suppressed and the design can be improved.

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

In the method for manufacturing the locking handle 11, since the secondary molded part 40 covers at least the operating area 32 of the primary molded part 30 over the entire circumference, even if molding defects such as sink marks occur in the primary molded part 30, The design can be improved by the secondary molded portion 40 covering molding defects such as sink marks.

In the method for manufacturing the locking handle 11, the rotating shaft 14 is held by the shaft holding part 36M, and the outer circumferential surface 62M of the shaft member 50M is fitted into the first recess 52 of the primary molding part 30, so that the primary molding relative to the lower mold L2 is The height, position in the X direction, and position in the Y direction of the molded part 30 can be maintained. By maintaining the height, the position in the X direction, and the position in the Y direction of the primary molding part 30 with respect to the lower mold L2, the primary molding part 30 is moved against the lower mold L2 by the filling pressure of the second resin material during secondary molding. It is possible to suppress misalignment and misalignment of the relative positional relationship between the primary molded part 30 and the secondary molded part 40.

In the locking handle 11 and the method for manufacturing the locking handle 11, the first resin material and the second resin material contain a glass reinforcement material, so that the mechanical strength of the primary molded part 30 and the secondary molded part 40 can be ensured. . In the locking handle 11 and the method for manufacturing the locking handle 11, the second resin material contains a glass reinforcement 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 main body 13 is obtained.

Although 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, etc. of the constituent members shown in the above-mentioned examples are merely examples, and can be variously changed based on design requirements and the like without departing from the gist of the present disclosure.

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

The lock handle 11 described in the embodiment is not limited to a configuration that is part of a 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 main body, 14... Rotating shaft, 20... Pedestal part, 30... Primary molding part, 31... Rotating shaft area, 32... Operating area, 33... Second end surface, 34... Second recess, 40... Secondary molded part, 41... First end surface, 50... Recess, 50M... Shaft member, 51... Cavity, 52... First depression, 53... Second depression, 54... First opposing wall part, 55...Connection 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 (14)

a handle body extending in the longitudinal direction;
a rotating shaft extending in an axial direction perpendicular to the long axis direction and protruding from the handle body to one side in the axial direction;
Equipped with
The handle body is
a rotating shaft area where the rotating shaft is provided;
an operation area located away from the rotation shaft area in the longitudinal axis direction and in which a locking operation is performed;
has
The handle body is
a primary molded part molded using a first resin material;
It is molded using a second resin material, and covers at least the operating area of the primary molded part over the entire circumference , and also covers an area facing the other side in the axial direction in the rotating shaft area, and a region facing the other side in the axial direction in the rotating shaft area. a secondary molded part that covers an area that is located on both sides in a width direction perpendicular to the axial direction and that connects to the operation area ;
Including locking handle. The first resin material includes a glass reinforcement material.
A locking handle according to claim 1 . The second resin material contains the glass reinforcing material in a smaller amount than the first resin material.
A locking handle according to claim 2 . The handle body is
A recess is formed from a first end surface on one side in the axial direction of the secondary molded part to the other side in the axial direction, centered on a central axis that is located away from the rotating shaft in the longitudinal direction and extends in the axial direction. Equipped with a recessed portion having a cavity,
The recess is
a first recess that is recessed from a second end surface on one side in the axial direction of the primary forming part to the other side in the axial direction;
a second recess that is recessed from the first end surface to the other side in the axial direction and has a depth smaller than the thickness of the secondary molded part located on one side in the axial direction than the primary molded part;
a pair of first opposing walls facing on both sides in the longitudinal direction with the cavity in between and extending from the bottom of the second recess to the other side in the axial direction along the inner circumferential surface of the first recess;
a connecting wall portion located at the bottom of the first recess and connecting the other end portions of the pair of first opposing wall portions in the axial direction;
a rib having a dimension in a width direction perpendicular to the long axis direction and the axial direction that is shorter than the connecting wall portion, protruding from the connecting wall portion to one side in the axial direction and connecting the pair of first opposing wall portions; Department and
a second opposing wall portion extending from both ends of the connecting wall portion in the width direction to one side in the axial direction along the inner circumferential surface of the first recess, and facing both sides in the width direction with the cavity in between; ,
has
The second depression, the first opposing wall, the connecting wall, the rib, and the second opposing wall are the secondary molded part,
An end portion of the second opposing wall portion on one side in the axial direction is located on the other side in the axial direction than the second end surface,
Claims 1 to 3, wherein the inner circumferential surface of the first recess is exposed facing the cavity between the second end surface and one end of the second opposing wall in the axial direction. A locking handle as described in any one of the above . The recess is disposed at a position facing the pedestal that rotatably supports the rotating shaft when the handle body is in the locked position and in the unlocked position.
A locking handle according to claim 4 . the primary molding portion has a second recess that is located farther from the rotation shaft in the longitudinal direction than the recess and is recessed from the second end face toward the other side in the axial direction,
The secondary molding portion has a protrusion filled in the second recess.
A locking handle according to claim 4 or 5 . The secondary molded part is exposed on the surface and forms a designed surface.
A locking handle according to any one of claims 1 to 6. A first resin material is filled into a primary mold in which a rotating shaft is attached, so that a part of the handle body extending in the longitudinal direction and a part of the handle body extending in an axial direction orthogonal to the longitudinal axis direction from the handle body in the axial direction are filled. has a rotating shaft projecting to one side of the rotating shaft, and has a rotating shaft region in which the rotating shaft is provided, and an operation region disposed apart from the rotating shaft region in the longitudinal axis direction and in which a locking operation is performed. Molding the primary molding part,
A second mold is provided in a secondary mold in which a cavity is formed around at least the operating area and a part of the rotating shaft area of the primary molding part when the rotating shaft and the primary molding part are installed. Filled with a resin material to cover at least the entire circumference of the operation area, and a region facing the other side in the axial direction in the rotating shaft area and a width direction perpendicular to the long axis direction and the axial direction. A method for manufacturing a locking handle, the method comprising: forming a secondary molding part covering an area located on both sides of the area and connected to the operation area . The first resin material includes a glass reinforcement material.
A method for manufacturing a locking handle according to claim 8 . The second resin material contains the glass reinforcing material in a smaller amount than the first resin material.
A method for manufacturing a locking handle according to claim 9 . The primary molded portion is recessed from a second end surface on one side in the axial direction to the other side in the axial direction, centered on a central axis that is located away from the rotating shaft in the longitudinal direction and extends in the axial direction. having a first depression;
The secondary mold has a shaft member that fits into a part of the inner circumferential surface of the first recess when the primary molding part is installed, and forms a recess having a cavity in the secondary molding part.
A method for manufacturing a locking handle according to any one of claims 8 to 10 . The recess is
a second depression disposed coaxially with the first depression and depressed from a first end surface on one side in the axial direction to the other side in the axial direction;
a pair of first opposing walls facing on both sides in the longitudinal direction with the cavity in between and extending from the bottom of the second recess to the other side in the axial direction along the inner circumferential surface of the first recess;
a connecting wall portion located at the bottom of the first recess and connecting the other end portions of the pair of first opposing wall portions in the axial direction;
a rib having a dimension in a width direction perpendicular to the long axis direction and the axial direction that is shorter than the connecting wall portion, protruding from the connecting wall portion to one side in the axial direction and connecting the pair of first opposing wall portions; Department and
a second opposing wall portion extending from both ends of the connecting wall portion in the width direction to one side in the axial direction along the inner circumferential surface of the first recess, and facing both sides in the width direction with the cavity in between; ,
has
An end portion of the second opposing wall portion on one side in the axial direction is located on the other side in the axial direction than the second end surface,
The shaft member is fitted with the inner circumferential surface of the first recess exposed between the second end surface and one end in the axial direction of the second opposing wall.
A method for manufacturing a locking handle according to claim 11 . The primary molded part has a second recess that is located further away from the rotating shaft in the longitudinal axis direction than the recess, and that is recessed from the second end surface to the other side in the axial direction,
The secondary molded part has a protrusion filled in the second recess.
A method for manufacturing a locking handle according to claim 11 or 12 . The secondary molded portion is exposed on the surface to form a design surface.
A method for manufacturing a locking handle according to any one of claims 8 to 13.

Images