JPH09317299A - Hinge mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge mechanism with more impact strength, lower operation load, less part items and better assembly. SOLUTION: A lock mechanism with a hinge mechanism has a base 10, a striker 20 with a locking pawl 21 and a plate spring 30 to energize the striker 20 to the direction of engaging the locking pawl 21 with an engagement member. The striker 20 is connected to the base 10 in a rotationally movable manner with a shaft hole 12 and a shaft 22. Material for the shaft hole 12 is selected to have a smaller molding shrinkage factor and a higher molding point than material for the shaft 22, the shaft hole 12 and the shaft 22 being integrally molded with two color molding. In this way, extremely small gaps are formed between the shaft hole 12 and the shaft 22 because both material have a difference in molding shrinkage factor, so that the base 10 and the striker 20 can be molded as one unit. If either material contains a lubricant the lubricant is oozed out to the extremely small gaps between the shaft hole 12 and the shaft 22 to smooth the rotation of the shaft 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage box provided in a vehicle interior of an automobile or the like, and more particularly to a hinge mechanism for rotatably connecting two parts constituting a lock mechanism.

[0002]

2. Description of the Related Art A storage box as shown in FIG. 4 is arranged between a driver's seat and a passenger seat of a vehicle. The storage box includes a storage box body 7, a lid 6 rotatably attached to the storage box body 7 between a position that covers the opening of the storage box body 7 and a position that opens the opening, and the lid 6. The lock device 1 is configured to lock at a position covering the opening of the storage box body 7. A schematic diagram of the locking device 1 is shown in FIG. The lock device 1 shown in FIG. 5 includes an engagement member 8 provided on the storage box body 7.
A lock member 3 attached to the lid 6 so as to be engageable with the engagement member 8 and an urging member 5 for urging the lock member 3 in a direction in which the lock member 3 and the engagement member 8 engage with each other. It is The lock member 3 is provided with a lock claw 4 engageable with the engagement member 8 and an attachment member 2 for attaching to the lid 6, and the lock claw 4 has an engagement direction with the engagement member 8 and an engagement member. It is configured to be movable in the unlocking direction. The lock member 3 and the biasing member 5 constitute a lock mechanism. There is also a lock mechanism in which the lock member is integrally formed with the storage box body or the lid.

The operation of the lock mechanism shown in FIG. 5 will be described. When the lid 6 is tilted in the direction of covering the opening of the storage box body 7 from the state where the opening is opened, the lock claw 4 of the lock member 3 contacts the engaging member 8. Since the lock claw 4 is configured to be movable in the engagement direction and the engagement release direction with the engagement member 8, the abutment causes the lock claw 4 to temporarily resist the urging force of the urging member 5. It escapes to the outside (in the direction of the position indicated by the dotted line). When the lid 6 is further tilted, the contact between the lock claw 4 and the engagement member 8 is released, so that the lock claw 4 is returned to the original position (the position shown by the solid line) by the urging force of the urging member 5. The lock claw 4 engages with the engaging member 8 and the lid 6 is locked to the storage box body 7. When opening the opening of the storage box main body 7, an external force is applied to the lock member 3 to move the lock claw 4 (in the direction of the position indicated by the dotted line) so that the lock claw 4 and the engagement member 8 are engaged with each other. In the released state, the lid 6 is rotated in the opening direction.

Next, a conventional lock mechanism is shown in FIGS. 6 and 7. FIG. 6 shows an example of a two-piece type locking mechanism, and FIG. 6a is a perspective view of one surface of the locking mechanism.
b is a perspective view of the other surface. The lock mechanism shown in FIGS. 6A and 6B is composed of two pieces, a striker 60 which is a lock member and a leaf spring 70 which is an urging member. The striker 60 is made of polyacetal or the like, and is integrally provided with a base 61 as a mounting member and a lock pawl 62, and a screw 75 for mounting the lock mechanism to the storage box body or the lid is inserted. A mounting hole 63 is provided. On the side of the striker 60 where the lock claw 62 is not provided, a leaf spring mounting groove 64 into which one end side of the leaf spring 70 is inserted and a leaf spring locking for locking the locking portion 72 on the other end side of the leaf spring 70. A groove 67 is provided. Further, in order to fix one end side of the leaf spring 70, a projection 65 is provided on the insertion opening side of the leaf spring mounting groove 64, and an engaging piece of the leaf spring 70 is provided in the leaf spring mounting groove 67. A leaf spring engagement hole 66 that engages with 71 is provided. The striker 60 is provided with a portion K in order to make the lock claw 62 movable in the engagement direction and the engagement release direction between the lock claw 62 and the engagement member.
Is made thin to have resin elasticity. Also,
The leaf spring 70 is provided for the striker 60 when the lock claw 62 and the engaging member remain in contact with each other (half lock).
It is for preventing the deformation of, and is formed of metal or the like, and the engaging piece 71 is provided on one end side,
A locking piece 72 is provided on the other end side. This leaf spring 70
Is inserted into the leaf spring mounting groove 64 so that the engaging piece 71 engages with the leaf spring engaging hole 66 and fixed at one end side,
By locking the locking piece 72 in the leaf spring locking groove 67, a biasing force acts on the other end side, that is, the lock claw 62 is biased in the direction of engagement with the engaging member.

The operation when the lock mechanism shown in FIG. 6 is attached to the lid of the storage box will be described. When the lid is tilted in the direction of covering the opening from the state where the opening is opened, the lock claw 62 comes into contact with the engaging member. The striker 60 is part K
Since this has resin elasticity, the lock claw 62 is temporarily released to the outside by this contact. When the lid is further tilted, the contact between the lock claw 62 and the engagement member is released and the lock claw 62 is biased in the engagement direction with the engagement member by the biasing force of the leaf spring 70. 62 and the engaging member are engaged, and the lid is locked to the storage box body. When opening the opening, an external force is applied to the striker 60 to move the lock claw 62, and the lid is rotated while the engagement between the lock claw 62 and the engaging member is released.

FIG. 7 shows an example of a 4-piece type lock mechanism, FIG. 7a is a perspective view of the lock mechanism, and FIG. 7b is a view showing a mounting state of each component. In the lock mechanism shown in FIGS. 7A and 7B, a base 80 as an attachment member, a striker 85 as a lock member, a torsion spring 90 as an urging member, and a base 80 and a striker 85 are rotatably connected. The pin 91 is composed of four pieces. The base 80 is formed of polyacetal or the like, and has a striker mounting portion 81 for mounting the striker 85 on the base 80 and a mounting hole 83 for inserting a screw 92 for mounting the lock mechanism to the housing box main body or the lid. Is provided. The striker 85 is formed of polyacetal or the like, and has a lock claw 86, a pin insertion hole 87 into which the pin 91 is inserted, and a stopper that restricts the rotational position of the striker 85.
88 are provided. The pin 91 is made of metal or the like and is provided in the striker mounting portion 81.
2. The striker 85 is pivotally connected to the base 80 by inserting it into the pin insertion hole 87 of the striker 85. The torsion spring 90 is made of metal or the like and is provided between the base 80 and the striker 85 to urge the striker 85 in the engagement direction between the lock claw 86 and the engagement member. The stopper 88 limits the rotational position of the striker 85 by the biasing force of the torsion spring 90 by contacting the base 80.

The operation when the lock mechanism shown in FIG. 7 is attached to the lid of the storage box will be described. When the lid is tilted in the direction of covering the opening from the state where the opening is open, the lock claw 86 comes into contact with the engaging member. Striker 85 has pin 9
Since it is rotatably connected to the base 80 by 1,
By this contact, the lock claw 86 is temporarily released to the outside. When the lid is further tilted, the contact between the lock claw 86 and the engagement member is released, and the lock claw 86 is biased in the engagement direction with the engagement member by the biasing force of the torsion spring 88. The lock claw 86 and the engaging member engage with each other, and the lid is locked to the storage box body. When opening the opening, an external force is applied to the striker 85 to rotate the lock claw 86, and the lid is rotated with the engagement between the lock claw 86 and the engaging member released.

[0008]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The hinge mechanism used for the type lock mechanism is
There are the following problems. That is, since the thickness is made thin and the striker has resin elasticity, it is possible to move the lock claw and the engaging member in the engaging direction and the disengaging direction. The strength, especially the impact strength at low temperature, is weak, and the elbow or the like may hit the striker and break when the lid is open.
In addition, locking is not good and the operation load is heavy, and particularly the operation load changes with temperature, and the operability is poor. If the wall thickness is reduced to reduce the operating load, it will break easily. Further, since there is no stopper in the disengagement direction between the lock claw and the engaging member, the striker deforms and breaks in some cases if external force is continuously applied. Further, the hinge mechanism used in the conventional 4-piece type lock mechanism has a large number of parts and is not assembled easily because the parts are assembled after being molded individually. There is a problem. Further, the hinge mechanism used in the lock mechanism in which the lock member is integrally formed with the storage box body or the lid has the same problem. The present invention is
The present invention was devised to solve the above-mentioned problems of the prior art, and provides a hinge mechanism used for a lock mechanism, etc., which has a high impact strength, a light operating load, a small number of parts, and good assembly. The task is to do.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 provides a hinge mechanism for turning between a first part and a second part, with the first part. The rotary shaft hole is integrally formed, and the rotary shaft integrally formed with the second component is formed in the rotary shaft hole. In the hinge mechanism according to the first aspect, the rotary shaft hole is integrally molded when the first component is molded, and the rotary shaft is integrally molded with the second component in the rotary shaft hole. Therefore, a component for connecting the first component and the second component is unnecessary, and the number of components can be reduced. Moreover, since the second part is molded after the first part is molded, the part in which the first part and the second part are integrated is taken out from the molding die, and the first part and the second part are taken out. No work is required to connect the two.
The invention according to claim 2 is the hinge mechanism according to claim 1, wherein the material for molding the first component having the rotary shaft hole is the material for molding the second component having the rotary shaft. Use a material with a smaller molding shrinkage. Since the hinge mechanism according to claim 2 uses a material having a smaller molding shrinkage ratio than the material for molding the second component having the rotary shaft as the material for molding the first component having the rotary shaft hole,
It is possible to easily form a minute gap between the rotary shaft hole of the first component and the rotary shaft of the second component. The invention according to claim 3 is the hinge mechanism according to claim 1 or 2, wherein the material for molding the first component having the rotary shaft hole is a material for molding the second component having the rotary shaft. A material having a smaller molding shrinkage and a higher molding temperature is used. The hinge mechanism according to claim 3 uses a material having a smaller molding shrinkage ratio and a higher molding temperature than the material for molding the second component having the rotary shaft as the material for molding the first component having the rotary shaft hole. Since the first part having the rotary shaft hole and the second part having the rotary shaft are molded by a two-color molding method or the like, the rotary shaft hole is primarily molded, and the temperature of the rotary shaft hole is lowered to cause shrinkage. In this state, the rotary shaft can be secondarily molded in the rotary shaft hole, and a minute gap between the rotary shaft hole of the first component and the rotary shaft of the second component can be reliably formed.
The invention according to claim 4 is the hinge mechanism according to any one of claims 1 to 3, wherein a material for molding the first component having the rotary shaft hole or a second component having the rotary shaft is molded. At least one of the materials to be used contains a lubricant. In the hinge mechanism according to claim 4, the lubricant is contained in at least one of the material for molding the first part having the rotary shaft hole and the material for molding the second part having the rotary shaft. The lubricant leaks into a minute gap between the rotary shaft hole of the component and the rotary shaft of the second component, and the rotation of the rotary shaft becomes smooth. Further, the invention according to claim 5 includes a first component attached to one of the storage box body and the lid, and a lock portion engageable with an engaging member provided on the other of the storage box body and the lid. A second part having
A lock mechanism comprising: the lock portion and an urging member that urges the lock portion in a direction in which the engagement member engages with each other; wherein the first component and the second component are the same.
The connection is performed by using the hinge mechanism described in any one of to 4.
In the lock mechanism according to claim 5, since the lock portion is rotatably connected to one of the storage box body and the lid by the rotation shaft hole and the rotation shaft, the impact strength is improved, the operation load is light, and the assembly is improved. Wearability is improved.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a lock mechanism using a hinge mechanism of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of one embodiment of a lock mechanism using a hinge mechanism of the present invention, FIG. 1a is a perspective view of one side, and FIG. 1b is a perspective view of the other side. The lock mechanism of the present invention comprises a base 10 which is an attachment member, a striker 20 which is a lock member, and a leaf spring 30 which is a biasing member for biasing the lock member in the engagement direction with the engagement member. There is. The base 10 is provided with a striker mounting portion 11 formed of polyacetal or the like and having a rotation shaft hole 12 and a mounting hole 13 into which a screw 35 for mounting a lock mechanism is inserted into the storage box body or the lid. It is provided. On the side of the base 10 where the striker attachment portion 11 is not provided, a leaf spring attachment groove 15 into which one end side of the leaf spring 30 is inserted is provided. Further, in order to fix one end side of the leaf spring 30, a projection 16 is provided on the insertion opening side of the leaf spring mounting groove 15, and the leaf spring mounting groove 1
A leaf spring engagement hole 14 with which the engagement piece 31 of the leaf spring 30 is engaged is provided in the inside 5. The striker 20 is formed of polyacetal or the like, and has a lock claw 21 engageable with an engagement member provided on the housing box main body or the lid, and a rotary shaft slidably inserted into the rotary shaft hole 12. 22 and a stopper 23 for restricting the rotational position of the striker 20 by the urging force of the leaf spring 30. Striker 20
On the side where the lock claw 21 of is not provided, the leaf spring 70
A plate spring locking groove 17 for locking the locking portion 32 on the other end side is provided. The leaf spring 30 is made of metal or the like,
The engaging piece 31 is provided on one end side, and the locking portion 32 is provided on the other end side. The leaf spring 30 is inserted into the leaf spring mounting groove 15 so that the engaging piece 31 engages with the leaf spring engaging hole 14 to fix one end side thereof, and the engaging portion 32 is provided with the leaf spring engaging groove 17. By locking the striker 20 in the direction in which the lock claw 21 and the engaging member are engaged with each other, the striker 20 is urged. The striker 20 is regulated in its rotational position by the biasing force of the leaf spring 30 by the stopper 23 coming into contact with the base 10.

Next, a method of integrally molding the base 10 and the striker 20 which are slidably connected by the rotary shaft hole 12 and the rotary shaft 11 will be described. As the material for molding the rotary shaft hole 12, that is, the rotary shaft hole for molding the base 10, a material having a smaller molding shrinkage ratio than the rotary shaft 22, that is, the material for molding the striker 20 is selected. Then, using a two-color molding method or the like, first, a rotary shaft hole molding material is poured into a mold to form a base having the rotary shaft hole 12.
The striker 20 is primary-molded, then the rotary-shaft molding material is injected into the rotary-shaft hole 12 and the mold to secondary-mold the striker 20 having the rotary shaft 22. At this time, the rotary shaft hole molding material has a smaller molding shrinkage ratio than the rotary shaft molding material, so that a minute gap is formed between the rotary shaft hole 12 and the rotary shaft 22. As a result, the base 10 and the striker 20, which are slidably connected by the rotary shaft hole 12 and the rotary shaft 22, are integrally molded as one component. As the rotary shaft hole molding material and the rotary shaft molding material, the same material may be selected as long as the molding shrinkage is different, or different materials may be selected.

In the above embodiment, a material having a smaller molding shrinkage ratio than the material for forming the rotary shaft is selected as the material for forming the rotary shaft hole, but the material for forming the rotary shaft hole and the material for forming the rotary shaft are formed. If the temperature is the same, the inner diameter of the rotary shaft hole 12 that is primarily molded may vary depending on the material, such as the temperature of the mold and the temperature of the rotary shaft molding material, when the striker 20 having the rotary shaft 22 is secondarily molded. It may change and a gap may not be formed between the rotary shaft hole and the rotary shaft. Therefore, it is preferable to select a material having a smaller molding shrinkage and a higher molding temperature than the material for molding the rotary shaft as the material for molding the rotary shaft hole. When such a material is selected, when the rotary shaft forming material is injected into the rotary shaft hole and the die which are formed by primary molding, and the striker having the rotary shaft inserted in the rotary shaft hole is secondarily formed, the rotary shaft is Since the molding temperature of the molding material is lower than that of the molding material of the rotary shaft hole, the rotary shaft hole is contracted and hardened, and the accuracy of the rotary shaft hole is not deteriorated.

In the above embodiment, a minute gap is formed between the rotary shaft hole and the rotary shaft due to the difference in molding shrinkage between the rotary shaft hole molding material and the rotary shaft molding material, and the rotary shaft rotates. Although it is configured to be slidably rotatable in the shaft hole, the rotary shaft does not smoothly rotate when the sliding resistance between the rotary shaft hole molding material and the rotary shaft molding material is large. Therefore, at least one of the rotary shaft hole molding material and the rotary shaft molding material contains a lubricant. When the lubricant is contained and integrally molded, the lubricant seeps into a minute gap between the rotary shaft hole 12 and the rotary shaft 22 as shown in FIG. 3, so that the rotary shaft 22 is smoothly rotated. be able to.

Next, the operation when the lock mechanism shown in FIG. 1 is attached to the lid will be described with reference to FIG. When the lid has the opening opened, the striker 20 is biased in the direction of the dotted arrow N by the biasing force of the leaf spring 30, and the stopper 23 comes into contact with the base 10 in the rotating position (FIG. 2). The solid line position) is regulated. When the lid is tilted in the direction of covering the opening from the state where the opening is open, the lock claw 21 of the striker 20 contacts the engaging member. Since the striker 20 is configured to be slidably rotatable with respect to the base 10 by the connection by the rotary shaft 22 and the rotary shaft hole 12, the lock claw 21 resists the biasing force of the leaf spring 30 by this contact. It rotates in the direction of the solid arrow M and is temporarily released to the outside. When the lid is further tilted, the contact between the lock claw 21 and the engaging member is released, and the lock claw 21 is moved to the leaf spring 30.
The lock claw 21 and the engaging member are engaged with each other, and the lid is locked to the storage box body. When opening the opening, the striker 20
An external force is applied to rotate the lock claw 2 in the direction of the solid arrow M.
The lid is rotated in a state where the engagement between 1 and the engagement member is released (the position indicated by the dotted line in FIG. 2). When the striker 20 rotates a predetermined amount or more in the direction of the solid arrow M, the surface A of the striker 20 contacts the surface B of the base 10 and the rotation of the striker 20 is restricted. It is possible to prevent breakage and the like.

In the above embodiment, the rotating shaft hole is formed in the base and the rotating shaft is formed in the striker, but the rotating shaft is formed in the base and the rotating shaft hole is formed in the striker. You may do it. Further, after forming the striker or the base having the rotating shaft, the base or the striker having the rotating shaft hole may be formed. In addition, the rotary shaft hole and the base, and the rotary shaft and the striker are integrally formed of the same material.
The striker, the rotary shaft and the striker may be integrally formed of different materials. Further, the striker and the base are integrally formed so as to be rotatable by the rotation shaft hole and the rotation shaft, and
Although the base is attached to the storage box body or the lid, the striker and the storage box body or the lid may be integrally formed rotatably by the rotation shaft hole and the rotation shaft. Further, the shape and mounting method of the leaf spring can be variously changed as long as the lock claw can be biased in the engagement direction with the engagement member by the biasing force of the leaf spring. Further, the biasing member that biases the lock claw in the engagement direction with the engagement member is not limited to the leaf spring and can be variously changed.

[0016]

As described above, in the hinge mechanism according to the first aspect, the number of parts is reduced and the work for connecting the parts is unnecessary. In the hinge mechanism according to the second aspect, it is possible to easily form a minute gap between the rotation shaft hole of the first component and the rotation shaft of the second component. Further, in the hinge mechanism according to the third aspect, it is possible to reliably form a minute gap between the rotation shaft hole of the first component and the rotation shaft of the second component. Further, in the hinge mechanism according to the fourth aspect, the rotation of the rotary shaft becomes smooth. In addition, the lock mechanism according to the fifth aspect has improved impact strength, a light operating load, and good assembling property.

[Brief description of drawings]

FIG. 1 is a lock mechanism 1 using a hinge mechanism of the present invention.
It is a block diagram of an embodiment.

FIG. 2 is one of a lock mechanism using the hinge mechanism of the present invention.
It is operation | movement explanatory drawing of embodiment.

FIG. 3 is an enlarged view of a connecting portion when a molding material contains a lubricant.

FIG. 4 is a schematic view of a storage box.

FIG. 5 is a schematic view of a locking device.

FIG. 6 is a view showing a lock mechanism using a conventional hinge mechanism.

FIG. 7 is a view showing a lock mechanism using a conventional hinge mechanism.

[Explanation of symbols]

 1; Locking device 2: Mounting member 3; Locking member 4; Locking claw 5; Energizing member 6; Lid 7; Storage box body 8; Engaging member 10, 61, 80; Base 12; Rotating shaft hole 20, 60, 85; striker 21, 62, 86; lock claw 22; rotating shaft 23, 88; stopper 30, 70; leaf spring 90; torsion spring 91; pin

Claims (5)

[Claims] 1. A hinge mechanism capable of rotating between first and second parts, wherein a rotary shaft hole integrally formed with the first part and the second shaft inside the rotary shaft hole. And a rotary shaft integrally formed with the hinge mechanism. 2. The material for molding the first part having the rotary shaft hole has a smaller molding shrinkage ratio than the material for molding the second part having the rotary shaft. The hinge mechanism according to 1. 3. The material for molding the first part having the rotary shaft hole has a smaller molding shrinkage ratio and a higher molding temperature than the material for molding the second part having the rotary shaft. The hinge mechanism according to claim 1 or 2, which is characterized. 4. The material for molding the first part having the rotary shaft hole or the material for molding the second part having the rotary shaft contains at least one lubricant. The hinge mechanism according to any one of to 3. 5. A first component attached to one of the storage box body and the lid, and a second component having a lock portion engageable with an engagement member provided on the other of the storage box body and the lid. A lock mechanism that includes a biasing member that biases the lock portion in a direction in which the lock portion and the engagement member engage with each other, wherein the first component and the second component are the first component and the second component. 4. A lock mechanism, wherein the lock mechanism is connected using the hinge mechanism according to any one of 4 above.