JP6681202B2 - Door check device and method of manufacturing door check device - Google Patents

Description

  One end of the arm is rotatably attached to the body side, and the thickness thereof in the direction of the rotation center axis is changed over the longitudinal direction so that the arm provided with the locking recess is provided on the door side. And a check mechanism detachable from the locking recess of the arm, and a method of manufacturing the door check device.

The arm of the conventional door check device will be described with reference to FIGS. 13 is a plan view of the arm, FIG. 14 is an end view of a section along a cutting line XIV-XIV in FIG. 13, and FIG. 15 is a diagram illustrating a method for manufacturing the arm in FIG.
As shown in FIGS. 13 to 14, the arm 1 of the door check device includes a core material 3 made of a metal plate and a resin layer 5 formed on the surface of the core material 3 by injection molding.

A through hole 1a is formed on one end side of the arm 1 and is rotatably attached to the body side around the hole 1a.
One or a plurality of locking recesses 1b are formed in the arm 1 by changing the thickness of the resin layer 5 in the center (rotation center axis) direction of the hole 1a over the longitudinal direction.

Further, the arm 1 is formed with a through hole 1c for positioning. The hole 1c includes a hole 3a in the core material 3 and a hole 5a in the resin layer 5.
Next, a method of manufacturing the arm 1 will be described in detail with reference to FIG.
In order to form the resin layer 5 on the core material 1, it is necessary to position and hold the core material 3 in the space between the upper mold 11 and the lower mold 13 that form the mold 10. On the other end side of the core material 3 where the resin layer 5 is not formed, the upper die 11 and the lower die 13 are in contact with the core material 3 and the vertical direction (the rotation center axis direction of the arm 1) and the rotation of the arm 1 are caused. The positioning of the arm 1 in the radial direction and the width direction of the arm 1 is performed. On the other hand, on one end side of the arm 1 covered with the resin layer 5, a positioning pin is used to move the arm 1 vertically and in the radial direction of rotation of the arm 1 and the width direction of the arm 1. Is being positioned. That is, the upper die 11 and the lower die 13 are provided with the positioning pins 15 and 17 which engage with the holes 3 a of the core material 3 and position the core material 3.

  The positioning pin 17 includes a small diameter portion 17a that fits into the hole 3a of the core material 3 and a large diameter portion 17b that abuts the peripheral edge of the opening of the hole 3a on the lower surface side of the core material 3. The positioning pin 15 has a tip end surface abutting the upper surface of the core material 3 of the arm 1, and a hole 15a into which the small diameter portion 17a of the positioning pin 17 is fitted is formed in the tip end surface.

The positioning pin 17 and the positioning pin 17 that is inserted through the hole a of the core material 3 position the core material 3 in the radial direction of rotation of the arm 1, the width direction of the arm 1, and the thickness direction of the arm 1.
Further, in order to form the hole 1a, the upper mold 11 and the lower mold 13 are provided with rotary shaft pins 19 and 21, respectively.

  Then, the thermoplastic resin is pressed into the voids of the mold 10 to mold the resin layer 5 (see, for example, Patent Document 1).

JP, 2001-317259, A

In the arm 1 of the door check device described in Patent Document 1, the core member 3 is provided with the hole 3a into which the small diameter portion 17a of the positioning pin 17 is fitted.
In order to prevent the rigidity of the core material 3 from decreasing due to the holes 3a (generation of cracks starting from the holes), it is necessary to increase the thickness and width of the core material 3 or to use a high-strength material for the core material 3. However, there is a problem that the cost is high.

  The present invention has been made in view of the above problems, and an object thereof is to provide a low-cost door check device and a method for manufacturing a door check device.

In order to achieve at least one of the above-mentioned problems, a door check device that reflects one aspect of the present invention has a hole formed on one end side and is rotatably attached to the body side using this hole. The arm provided with a locking recess is formed by changing the thickness in the direction of the central axis of rotation over the longitudinal direction, and the arm is provided on the door side, and the arm is inserted to lock the arm. In a door check device having a check mechanism that can be engaged and disengaged in a recess, and a retaining member that is provided on the arm that passes through the check device and that prevents the arm from coming off from the check device, the arm includes: a core material composed of a resin layer formed on the surface of the core member, the retaining member is formed on the resin layer of the arm of the side that is provided opposite to the width direction of the arm Hey width than the portion of the other of said resin layer is rather narrow, the core material is narrow part exposed to the outside, opposite the side where the retainer member is provided, the resin layer of the arms are formed is formed on the core, the width than the portion of the other of said core member in the width direction of the arm is widely among the wide portion the core material is exposed to the outside, it is at least either one is formed, of the one The inner wall surface of the hole on the end side is covered with resin .

In order to achieve at least one of the above-mentioned problems, a method for manufacturing a door check device that reflects one aspect of the present invention is such that a hole whose inner wall surface is covered with resin is formed on one end side , An arm rotatably attached to the body side using this hole, the arm having a locking recess formed by changing the thickness in the rotation center axis direction over the longitudinal direction, and the arm provided on the door side. A check mechanism capable of being engaged with and disengaged from the locking recess, and a retaining member provided on the arm through which the check device is inserted to prevent the arm from coming off from the check device. in the manufacturing method of the door check device having the arms, a core material composed of a resin layer formed by injection molding on the surface of the core material, when setting the core material into the mold Positioning in the width direction of said core portion which the resin layer is formed on the opposite side of the arm to the side where the retainer member is provided, be done by causing contact the sides of the core material into the mold Is characterized by.

  Other features of the present invention will become more apparent from the modes for carrying out the invention described below and the accompanying drawings.

According to the door check device of the present invention, the arm includes the core material and the resin layer formed on the surface of the core material, and the arm has the resin layer on the side opposite to the side where the retaining member is provided. are formed in the width than the portion of the other of the resin layer in the width direction of the arm rather narrow, narrow part of the core material is exposed to the outside, opposite the side where the retainer member is provided, the arm the resin layer is formed on the core material formed of the in the width direction of the arm width than the portion of the other of the core material widely among the wide portion the core material is exposed to the outside, at least one Since one side is formed and the inner wall surface of the hole on the one end side is covered with resin, the side part of the core material of the arm is brought into contact with the mold to position the core material in the mold. You can Therefore, it is not necessary to provide a positioning hole in the core material, and in order to prevent the rigidity of the core material from decreasing due to the hole, the core material can be made thicker or wider, or the core material can be made to have higher strength. It becomes unnecessary and low cost.

According to the method for manufacturing a door check device of the present invention, the arm includes a core material and a resin layer formed on the surface of the core material by an injection molding method, and when the core material is set in a mold. the positioning in the width direction of said core portion which the resin layer is formed on the opposite side of the arm to the side where the retainer member is provided, by abutting the sides of the core material into the mold By doing so, it is not necessary to provide a positioning hole in the core material, and in order to prevent the rigidity of the core material from decreasing due to the hole, increase the thickness and width of the core material and make the core material a high strength material. It is not necessary to do so, and the cost is low.

  Other effects of the present invention will become more apparent from the modes for carrying out the invention described below and the accompanying drawings.

It is a perspective view of the door check device of the first embodiment. It is a disassembled perspective view of the principal part in FIG. It is a top view of the arm of FIG. FIG. 4 is a front view of FIG. 3. FIG. 5 is an end view of a cutting portion along a cutting line VV in FIG. 3. FIG. 6 is an end view of a cutting portion along a cutting line VI-VI in FIG. 3. FIG. 7 is an end view of a cutting portion taken along a cutting line VII-VII in FIG. 3. It is a top view of the core material of FIG. It is a figure explaining the method of manufacturing the arm of FIG. The top view of the arm of the door check apparatus of 2nd Embodiment. An end view of a cutting portion taken along a cutting line XI-XI in FIG. It is a top view of the core material of FIG. It is a top view of the conventional arm of a door check device. FIG. 14 is an end view of a cutting portion along a cutting line XIV-XIV in FIG. 13. It is a figure explaining the manufacturing method of the arm of FIG.

<First Embodiment>
A first embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view of the door check device of the first embodiment, FIG. 2 is an exploded perspective view of a main part in FIG. 1, FIG. 3 is a plan view of an arm of FIG. 1, FIG. 4 is a front view of FIG. 5 is an end view of a cutting part taken along a cutting line V-V in FIG. 3, FIG. 6 is an end view of a cutting part taken along a cutting line VI-VI of FIG. 3, and FIG. 7 is a cutting part taken along a cutting line VII-VII of FIG. FIG. 8 is an end view, FIG. 8 is a plan view of the core member of FIG. 3, and FIG. 9 is a diagram illustrating a method of manufacturing the arm of FIG.

First, the overall configuration of the door check device will be described with reference to FIGS. 1 and 2.
In these figures, the body bracket 51 is attached to the vehicle body side, and the case 52 is attached to the door side. A bottomed recess 52c is formed in the center of the case 52, and bases 52b attached to the door are provided on both sides of the bottomed recess 52c. Further, the bottom wall of the bottomed recess 52c is formed with a hole 52a for allowing the arm 53 to penetrate through the bottomed recess 52c. The case 52 is manufactured by press molding.

Here, the arm 53 will be described. As shown in FIGS. 3 to 4, the arm 53 of the present embodiment has a hole 53a formed on one end side and a hole 53b formed on the other end side.
Then, as shown in FIG. 1, the arm 53 is movably attached to the body by using the hinge pin 58 which is inserted into the hole 53a of the arm 53 and attached to the body bracket 51.

As shown in FIGS. 3 to 7, the arm 53 includes a core material 61 made of metal and a resin layer 71 covering the core material 61 to improve the aesthetic appearance of the arm 53 and reduce sliding resistance. .
Then, by changing the thickness of the resin layer 71 in the rotation center axis direction (the axial direction of the hinge pin 58) over the longitudinal direction, the convex portions 53d are formed on the upper surface and the lower surface of the arm 53 in this order from one end side of the arm 53. A first locking recess 53c, a protrusion 53d, and a second locking recess 53e are formed.

As shown in FIG. 1, the other end side of the arm 53 projects from the hole 52a of the bottomed recess 52c of the case 52, and the spring pin 55 as a retaining member attached to the hole 53b allows the case 52 to have a bottom. The recess 52c is prevented from coming off.
The check mechanism will be described. As shown in FIGS. 1 and 2, in the bottomed concave portion 52c of the case 52, the first and the same shapes are formed so that the arm 53 is sandwiched by the sliding contact portions 81a and 83a from the rotation center axis direction of the arm 53. The second shoes 81 and 83 are arranged to face each other. Then, the first and second shoes 81 and 83 are biased toward the arm 53 in the space inside the bottomed recess 52c of the case 52 and on the back side of the first and second shoes 81 and 83, respectively. Cushions 85 and 87 are arranged as the first and second biasing members.

The opening 52e of the bottomed recess 52c of the case 52 is covered with a metal cover 89. A hole 89a through which the arm 53 is inserted is formed in the cover 89 at a position facing the hole 52a of the bottomed recess 52c of the case 52.
Here, the operation of the door check device having the above configuration will be described. First, when the door is moved in the opening direction from the closed state, the case 52 moves with respect to the arm 53 along with the movement in the opening direction. As a result, the sliding contact portions 81a and 83a of the shoes 81 and 83 ride over the convex portion 53d of the arm 53 and engage with the first locking concave portion 53c. This position is the half-open position of the door, and opening / closing of the door is once restricted.

  Further, when the door is moved in the opening direction, the sliding contact portions 81a and 83a of the shoes 81 and 83 ride over the next convex portion 53d of the arm 53 and engage with the second locking concave portion 53e. This position is the fully open position of the door. In this fully open position, the bottomed recess 52c is in contact with the spring pin 55, and the door is prohibited from further opening.

When the door is moved in the closing direction from the fully opened position, the sliding contact portions 81a and 83b of the shoes 81 and 83 move over the convex portion 53d of the arm 53 in the opposite direction to the opening direction, and go through the half opened position. , It will return to the fully closed position.
Here, the arm 53 will be described in detail.

As shown in FIG. 8, the core member 61 of the arm 53 is formed with a hole 61a and a hole 61b facing the hole 53a and the hole 53b of the arm 53, respectively.
Next, a method of manufacturing the arm 53 having the above configuration will be described with reference to FIG.
When the core material 61 is held in the space between the upper die 121 and the lower die 123 which form the die 120 and the thermoplastic resin is pushed into the voids in the die 120, the resin layer 71 is formed.

  Here, a configuration in which the core material 61 is positioned and held in the space between the upper die 121 and the lower die 123 will be described. In the present embodiment, the core member includes the pin 131 provided on the upper die 121, the pin 133 provided on the lower die 123, the pin 135 provided on the upper die 121, and the pin 137 provided on the lower die 123. Positioning and holding of 61 are performed.

  More specifically, the pin 133 provided on the lower die 123 has a small diameter portion 133a that fits into the hole 61b of the core material 61 and a large diameter portion 133b that abuts the peripheral edge of the opening on the lower surface side of the hole 61b of the core material 61. It consists of The pin 131 provided on the upper die 121 has a tip end surface in contact with the upper surface of the core material 61, and a hole 131a into which the small diameter portion 133a of the positioning pin 133 is fitted is formed in the tip end surface. Then, the pin 131 and the pin 133 form a hole 71 a having a larger diameter than the hole 61 b of the core material 61 in the resin layer 71.

Further, the tip end surface of the pin 137 provided on the lower die 123 contacts the lower surface of the core material 61, and the tip end surface of the pin 135 provided on the upper die 121 contacts the upper surface of the core material 61. Then, with the pins 135 and 137, a hole 71 b whose bottom is the surface of the core material 61 is formed in the resin layer 71.
Further, as shown in FIG. 8, the lower mold 123 is provided with a convex portion 123 a that abuts on one side portion of the core material 61 and a convex portion 123 b that abuts on the other side portion of the core material 61. There is.

Here, in FIG. 1, the rotation center axis direction of the arm 53 (thickness direction of the arm 53) is the z axis, the rotation radius direction of the arm 53 is the x axis, and the direction orthogonal to the x axis and the z axis (the width of the arm 53). Direction) is the y-axis.
Then, with the pin 131 and the pin 133 provided on the mold 120, the x-axis (the rotation radius direction of the arm 53), the y-axis (the width direction of the arm 53) on the other end side of the core material 61, Positioning in the Z-axis direction (thickness direction of the arm 53) is performed, and the pin 135 and the pin 137 provided on the die 120 are used in the z-axis direction (of the arm 53 of the arm 53) on one end side of the core material 61. Positioning is performed in the thickness direction), and the convex portion 123a provided on the lower die 123 of the mold 10 and the convex portion 123b further serve as the y-axis (of the arm 53) on one end side of the core material 61. Positioning is performed in the width direction).

  Therefore, with these positioning mechanisms, movement of the core material 61 in the x-axis direction (radial direction of rotation of the arm 53), movement of the core material 61 in the y-axis direction (width direction of the arm 53), and z-axis direction of the core material 61 ( The movement of the arm 53 in the thickness direction) is prohibited, and the rotation of the core 61 about the pin 133 is also prohibited, so that the core 61 is positioned and held in the mold 120.

In addition, the lower die 123 has a convex portion 123d smaller in diameter than the hole 61a of the core material 61 and fitted into the hole 61a, and the upper die 121 has the same diameter as the convex portion 123d. A convex portion 121d that abuts on the top surface of the 123d is formed, and the convex portion 123d and the convex portion 121d form a hole 53a in which the inner wall surface of the arm 53 is covered with resin.

In the present embodiment, the convex portion 123a and the convex portion 123b formed on the lower die 123 are located in the x-axis direction (rotation radius direction of the arm 53) in the thickness direction of the arm 53 of the core material 61. It is formed at a position different from the hole 71b for positioning.
When the resin layer 71 is formed by the mold 120 having such a configuration, the convex portion 123a and the convex portion 123b of the lower mold 123 are formed on the resin layer 71 of the arm 53 and other portions in the width direction of the arm 53. A narrower first narrow portion 53f and a narrower second portion 53g are formed (see FIG. 3).

  Further, in the present embodiment, the first narrow portion 53f and the second narrow portion 53g are other than the range in which the check mechanism abuts in the radial direction of rotation of the arm 53 (range W in FIGS. 3 and 4). Was formed at the location. Further, as shown in FIG. 6, in order to improve the appearance, the first narrow portion 53f and the second narrow portion 53g of the convex portion 123a and the convex portion 123b of the lower die 123 are provided on the upper surface of the core material 61. The shape is such that it is not formed.

The door check device configured as described above has the following effects.
(1) The convex portion 123a of the lower die 123 of the mold 120 forming the first narrow portion 53f having a width narrower than other portions in the resin layer 71 of the arm 53 in the width direction of the arm 53 is one of the core members 61. The convex portion 123b of the lower die 123, which abuts on the side portion of the core member 61 and forms the second narrow portion 53g, abuts on the other side portion of the core member 61, and the arm 53 of the core member 61 can be positioned in the width direction. Therefore, it is not necessary to provide a positioning hole in the core material 61, and in order to prevent the rigidity of the core material 61 from being reduced due to the hole, the thickness or width of the core material 61 is increased, or the material of the core material 61 is made of high strength. There is no need to make things, and the cost is low.
(2) The first narrow portion 53f and the second narrow portion 53g formed on the resin layer 71 are in the range in which the check mechanism contacts in the radial direction of rotation of the arm 53 (range W in FIGS. 3 and 4). ), The flow of the resin at the time of molding is improved, and the convex portion 53d of the arm 53 formed in the range W of the resin layer 71, the first locking concave portion 53c, and the second locking portion 53c are formed. The moldability of the recess 53e is improved.

 (3) The convex portion 123a and the convex portion 123b formed on the lower die 123 are holes for positioning the arm member 53 of the core material 61 in the thickness direction at the position in the x-axis direction (radial direction of rotation of the arm 53). It is formed at a position different from 71b. That is, the first narrow portion 53f and the second narrow portion 53g formed by the convex portion 123a and the convex portion 123b of the lower die 123 are located at the position in the x-axis direction (the radial direction of rotation of the arm 53), and the core material 61 is formed. Is formed at a position different from the hole 71b for positioning the arm 53 in the thickness direction. Therefore, the flow of the resin at the time of molding is improved, and the moldability of the convex portion 53d, the first locking concave portion 53c, and the second locking concave portion 53e of the arm 53 formed in the range W of the resin layer 71 is improved. .

(4) The protrusion 123a and the protrusion 123b formed on the lower die 123 are set so that the positions in the x-axis direction (the radial direction of rotation of the arm 53) are different, so that the resin flow at the time of molding is good. Therefore, the molding failure of the resin layer 71 is eliminated.
<Second Embodiment>
A second embodiment of the present invention will be described with reference to the drawings. 10 is a plan view of an arm of the door check device according to the second embodiment, FIG. 11 is an end view of a cutting portion taken along a cutting line XI-XI in FIG. 10, and FIG. 12 is a plan view of the core member in FIG.

The difference between the present embodiment and the first embodiment is the shape of the core material and the lower mold of the mold, and the other parts are the same, so the same parts are designated by the same reference numerals, A duplicate description will be omitted.
A convex portion 61h protruding laterally is formed on one side portion of the core material 61, and a convex portion 61i protruding laterally is formed on the other side portion.

  Further, in the present embodiment, the convex portion 61h and the convex portion 61i are set so that the positions in the x-axis direction (the radial direction of rotation of the arm 53) are the same. Therefore, the convex portion 61h and the convex portion 61i form a wide portion WA on the core member 61 in the width direction of the arm 53, which is exposed to the outside of the arm 53 and is wider than other portions.

The door check device configured as described above has the following effects.
(1) By forming a wide portion WA having a width wider than other portions in the width direction of the arm 53 on the core material 61 of the arm 53, the side portion of the core material 61 of the arm 53 is made into a mold (lower mold 123 ), The arm 53 of the core 61 can be positioned in the width direction. Therefore, it is not necessary to provide a positioning hole in the core material 61, and in order to prevent the rigidity of the core material 61 from being reduced due to the hole, the thickness or width of the core material 61 is increased, or the material of the core material 61 is made of high strength. There is no need to make things, and the cost is low.

The present invention is not limited to the above embodiment. For example, the following modifications are possible.
In the first embodiment, the narrow portions are formed on both sides of the resin layer 71 of the arm 53, and the arm 53 of the core material 61 is positioned in the width direction. In addition, in the second embodiment, the wide portions WA are formed on both sides of the core material 61, and the arm 53 of the core material 61 is positioned in the width direction. However, the present invention is not limited to this, and the narrow portion may be formed on one side portion of the arm 53 and the wide portion may be formed on the other side portion of the arm 53. In addition, a wide portion and a narrow portion may be formed on one side of the arm 53.

Further, in the second embodiment, the convex portion 61h and the convex portion 61i are set to have the same position in the x-axis direction (the radial direction of rotation of the arm 53), but they may be different positions.

53 arm 61 core material 71 resin layer

Claims (6)

An arm having a hole formed on one end side and rotatably attached to the body side by using the hole, and by changing the thickness in the rotation center axis direction over the longitudinal direction, An arm formed with
A check mechanism which is provided on the door side, through which the arm is inserted, and which can be engaged and disengaged with the locking recess;
A retaining member which is provided on the arm through which the check device is inserted, and which retains the arm from the check device;
In a door check device having
The arm comprises a core material and a resin layer formed on the surface of the core material,
It said retaining member is formed on the resin layer of the arm of the side that is provided opposite the width than the other portions of the resin layer in the width direction of the arm rather narrow, narrow the core material is exposed to the outside parts, on the opposite side to the side where the retainer member is provided, wherein formed on the core material wherein the resin layer is formed of the arm, the width than the portion of the other of said core member in the width direction of the arm widely In the wide portion where the core material is exposed to the outside , at least one of them is formed,
A door check device , wherein an inner wall surface of the hole on the one end side is covered with resin . The door check device according to claim 1, wherein the narrow portion and the wide portion are formed in a portion other than a range in which the check mechanism abuts in a rotation radius direction of the arm. In the resin layer, a positioning hole whose bottom is the surface of the core member is formed along the rotation axis direction of the arm,
The door narrowing device according to claim 1 or 2, wherein the narrow portion and the wide portion are formed at positions different from the positioning hole in a radius direction of rotation of the arm. A hole whose inner wall surface is covered with resin is formed on one end side , and the arm is rotatably attached to the body side using this hole, and the thickness in the rotation center axis direction is By changing it, the arm having the recess for locking is formed,
A check mechanism which is provided on the door side, through which the arm is inserted, and which can be engaged and disengaged with the locking recess;
A retaining member which is provided on the arm through which the check device is inserted, and which retains the arm from the check device;
In a method of manufacturing a door check device having:
The arm comprises a core material and a resin layer formed on the surface of the core material by an injection molding method,
When the core material is set in the mold, the widthwise positioning of the core material portion on which the resin layer of the arm on the side opposite to the side where the retaining member is provided is formed is determined by the side portion of the core material. method of manufacturing a door check device which is characterized in that by causing contact with the mold to. The widthwise positioning portion of the core member is
The door check device manufacturing method according to claim 4, wherein the check mechanism is located outside the range in which the check mechanism abuts in the radial direction of rotation of the arm. In the resin layer, a positioning hole whose bottom is the surface of the core member is formed along the rotation axis direction of the arm,
The method for manufacturing a door check device according to claim 4 or 5, wherein a positioning position in the width direction of the core member is formed at a position different from the positioning hole in a rotation radius direction of the arm.

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