JP2007277906A - Door check device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door check device, without generating an abnormal sound, and without reducing check force, in a door check device having a body bracket fixed to the car body side, an arm having one end part side rotatably installed on the body bracket, a case of boring a hole in a bottom wall of a bottomed recessed part arranged in the center for penetratingly arranging the arm in this bottomed recess, a stopper means arranged on the other end part side of the arm and preventing slipping-out from the case, and a cover arranged so as to cover an opening of the bottomed recess of the case and forming a hole for inserting the arm in a position opposed to the hole formed in the bottomed recess. <P>SOLUTION: The arm 103 is formed of a magnetic substance. A magnet body 122 magnetically attracted to the arm 103, is arranged in the case 102. The holes (the recessed parts) 201 and 203 of not contacting with the magnet body 122, are arranged on a surface for magnetically attracting the magnet body 122 of the arm 103, and the contact area between the magnet body 122 and the arm 103 is changed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a body bracket fixed to the vehicle body side, an arm whose one end is rotatably attached to the body bracket, and a bottom wall of the bottomed recess provided in the center. A case in which a hole for penetrating the arm is formed, stopper means provided on the other end side of the arm to prevent the arm from being removed, and a bottomed recess of the case And a cover formed with a hole through which the arm is inserted at a position opposite to the hole formed in the bottomed recess, and either the case or the cover One side is related with the door check apparatus provided in the door side.

  A conventional door check device will be described with reference to FIGS. 5 is a perspective view of a conventional door check device, FIG. 6 is a cross-sectional view taken along line AA in FIG. 5, FIG. 7 is a cross-sectional view taken along line BB in FIG. 5, and FIG. It is a disassembled perspective view in a case.

  5 and 6, reference numeral 1 denotes a body bracket provided on the vehicle body side, and 2 a case provided on the door side. A hole 3h is provided on one end side of the arm 3 and is rotatably connected to the body bracket 1 using a pin 8 inserted through the hole 3h. The other end side of the arm 3 penetrates the case 2 and can advance and retreat with respect to the case 2. A stopper cushion 4 is provided at the other end of the arm 3 projecting from the case 2, and a stopper means 21 that is formed by bending the arm 3 to prevent the arm 3 from coming off is formed. A concave portion 3a (locking concave portion) sandwiched between the convex portions 3b is formed in an intermediate portion of the arm 3.

In the case 2, a mechanism that can be engaged and disengaged with these recesses 3a is provided.
As shown in FIGS. 7 and 8, the case 2 includes a base portion 2 b attached to the door side and a bottomed recess 2 c in which a hole 2 a through which the arm 3 is inserted is formed in the bottom portion. In the bottomed recessed portion 2 c of the case 2, a mechanism that can be engaged and disengaged with the recessed portion 3 a of the arm 3 is provided. This mechanism is composed of a pair of shoes 22 (first shoe and second shoe) that can come into contact with the upper and lower surfaces of the arm 3, and an elastic body that urges each shoe 22 toward the upper and lower surfaces of the arm 3. It consists of a pair of cushions 24 (first urging means, second urging means). The shoe 22 has a sliding contact portion 22a protruding so as to be in sliding contact with the arm 3, and a side surface 22b facing the side wall surface 2f in the bottomed recess 2c of the case 2 (see FIG. 8). The opening 2 e of the bottomed recess 2 c of the case 2 is covered with a metal cover 20. The cover 20 is formed with a hole 20a through which the arm 3 is inserted so as to face the hole 2a of the bottomed recess 2c of the case 2. Further, the arm 3 of the conventional example includes a main body 3c made of metal and a resin layer 3d that covers the main body 3c in order to improve the appearance of the arm 3 and reduce friction with the shoe 22.

  As shown in FIG. 5, the cover 20 and the case 2 are attached by providing the cover 20 with a claw portion 20b facing the base portion 2b of the case 2 and bending the claw portion 20b. As shown in FIGS. 5 and 7, the stopper means 21 of the conventional example is formed by bending the other end of the arm 3.

  Next, the operation of the door check device having the above configuration will be described. The arm 3 moves forward and backward with respect to the case 2 as the door moves in the opening direction or in the closing direction. When the shoe 22 gets over the convex portion 3b of the arm 3 and engages with the concave portion 3a, the opening and closing of the door is temporarily prohibited, and the door is checked. That is, the concave portion 3a functions as a half-open locking concave portion that prohibits rotation of the door by engaging the shoe 22 when the door is half open.

Further, when the door is moved in the opening direction or the closing direction, the shoe 22 gets over the convex portion 3b of the arm 3, and the movement of the door in the opening direction or the movement in the closing direction is continued.
When the door is fully opened, the stopper means 21 comes into contact with the outer surface of the case 2 via the stopper cushion 4, and further movement of the door in the opening direction is prohibited (see, for example, Patent Document 1).
JP-A-10-169283 (FIGS. 1 to 5)

However, the door check device configured as shown in FIGS. 5 to 8 has the following problems.
(1) When the shoe 22 gets over the convex portion 3b of the arm 3 and engages with the concave portion 3a, an abnormal noise is generated.
(2) When used for a long period of time, the resin layer 3d of the arm 3 and the shoe 22 are worn, and the engagement force of the shoe 22 with the recess 3a, that is, the check force when the door is half open is reduced.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a door check device in which abnormal noise is not generated and the check force is not reduced.

  The invention according to claim 1, which solves the above-described problem, includes a body bracket fixed to the vehicle body side, an arm having one end portion rotatably attached to the body bracket, and a bottomed recessed portion provided in the center. The bottom wall has a case in which a hole for penetrating the arm is formed in the bottomed recess, and a stopper provided on the other end side of the arm to prevent the arm from coming off. Means and a cover disposed so as to cover the opening of the bottomed recess of the case, and a cover formed with a hole through which the arm is inserted at a position facing the hole formed in the bottomed recess, In the door check device in which one of the case and the cover is provided on the door side, the arm is formed of a magnetic body, and a magnet body that is magnetically attracted to the arm is disposed in the case, and the arm Before On a surface magnet is magnetically attracted, the recess does not contact the magnet body provided is a door check apparatus being characterized in that so as to vary the contact area between the arm and the magnet body.

  As the door moves in the opening direction or in the closing direction, the arm advances and retreats with respect to the case. At this time, the magnet body in the case is in sliding contact with the arm. When the magnet body is magnetically attracted to the arm, the magnetic attraction force of the magnet body when there is a recess on the surface facing the magnet body of the arm, and the magnet when there is no recess on the surface facing the magnet body of the arm The magnetic attraction force of the body is a large magnetic attraction force on the arm of the magnet when there is no recess on the surface of the arm facing the magnet body.

Therefore, when the arm moves forward and backward with respect to the case and the magnet body reaches a portion where there is no concave portion of the arm, opening and closing of the door is temporarily prohibited and a door check is performed.
Further, when the door is moved in the opening direction or the closing direction, the magnet body slides on the arm, and the movement of the door in the opening direction or the movement in the closing direction is continued.

When the door is fully opened, the stopper means comes into contact with the case, and further movement of the door in the opening direction is prohibited.
The invention according to claim 2 is characterized in that a biasing member that biases the magnet body toward the arm side is provided in a space on the back side of the magnet body in the bottomed recess of the case. The door check device according to claim 1.

  According to a third aspect of the present invention, the magnet body has one magnetic pole on the first surface, which is the surface facing the arm, and the second magnetic surface on the side opposite to the first surface, the other magnetic pole. And a yoke that contacts the second surface, extends in the first surface direction, contacts the arm, and guides the magnetic flux generated by the magnet to the arm. The door check device according to claim 1 or 2.

  According to a fourth aspect of the present invention, the magnet body includes a first magnet body and a second magnet disposed in the bottomed recess of the case so as to sandwich the arm from the direction of the rotation center axis of the arm. The door check device according to any one of claims 1 to 3, wherein the door check device comprises a body.

  According to the first to fourth aspects of the present invention, the magnet body is slidably contacted with the arm, and the door is checked based on the magnitude of the magnetic attractive force of the magnet body with respect to the arm, so that no abnormal noise is generated. In addition, the door checking power does not decrease even when used for a long time.

Moreover, the magnetic attraction force with respect to the arm of a magnet body can be arbitrarily set by changing the size and shape of the recess.
According to the invention which concerns on Claim 2, the biasing member which urges | biases the said magnet body to the said arm side was provided in the space of the back side of the said magnet body in the bottomed recessed part of the said case, and it is large. The door check power can be obtained.

  According to the invention of claim 3, the magnet body has one magnetic pole on the first surface that is the surface facing the arm and the second surface that is the surface opposite to the first surface on the other side. And a yoke that contacts the second surface, extends in the first surface direction, contacts the arm, and guides the magnetic flux generated by the magnet to the arm. Thus, a large magnetic attractive force can be obtained efficiently with a small magnet.

  According to the invention which concerns on Claim 4, the said magnet body is arrange | positioned in the bottomed recessed part of the said case so that the said arm may be pinched | interposed from the rotation center axis direction of the said arm, and 2nd The apparatus can be made compact.

  The door check apparatus of an example is demonstrated using FIGS. 1-4. 1 is a perspective view of a door check device according to an embodiment, FIG. 2 is a cross-sectional view taken along a cutting line CC in FIG. 1, FIG. 3 is a cross-sectional view taken along a cutting line DD in FIG. It is a disassembled perspective view in the case.

  1-4, 101 is a body bracket provided on the vehicle body side, and 102 is a case provided on the door side. A hole 103h is provided on one end of the arm 103, and the arm 103 is rotatably connected to the body bracket 101 using a pin 108 inserted through the hole 103h. The other end side of the arm 103 penetrates the case 102 and can advance and retreat with respect to the case 102. Stopper means 121 is formed at the other end of the arm 103 protruding from the case 102.

  Two holes (concave portions) 201 and 203 and a non-hole forming portion 205 formed between the hole 201 and the hole 203 are formed in an intermediate portion of the arm 103. Further, the arm 103 of this embodiment is made of a magnetic material such as iron.

  As shown in FIGS. 3 and 4, the case 102 includes a base portion 102 b attached to the door side and a bottomed recess 102 c in which a hole 102 a through which the arm 103 is inserted is formed in the bottom portion. A pair of magnet bodies 122 (a first magnet body and a second magnet body) that are disposed so as to sandwich the arm 103 in the bottomed recess 102c of the case 102 and can be magnetically attracted to the upper and lower surfaces of the arm 103, A pair of cushions 124 (first urging means and second urging means) made of an elastic body that urges each magnet body 122 toward the upper surface and the lower surface of the arm 103 are disposed.

  The opening 102 e of the bottomed recess 102 c of the case 102 is covered with a cover 120. The cover 120 is formed with a hole 120a through which the arm 103 is inserted so as to face the hole 102a of the bottomed recess 102c of the case 102. As shown in FIG. 1, the cover 120 and the case 102 are attached by providing the cover 120 with a claw portion 120b facing the base portion 102b of the case 102 and bending the claw portion 120b.

  As shown in FIG. 4, the magnet body 122 has one magnetic pole on the first surface 301a that is the surface facing the arm 103, and the second surface 301b that is the surface opposite to the first surface 301a on the other side. The magnet 301 is composed of a magnetic pole, and a yoke 303 made of soft iron formed so as to cover a surface other than the second surface 301b of the magnet 301. That is, the yoke 303 contacts the second surface 301 b, extends in the direction of the first surface 301 a and contacts the arm 103, and guides the magnetic flux generated by the magnet 301 to the arm 103. As shown in FIG. 3, in this embodiment, the shape of the yoke 303 is set so that the first surface 301 a of the magnet 301 does not contact the arm 103.

  Further, in this embodiment, the shape of the hole 201 formed on the body bracket 101 side is a triangular shape whose bottom is located on the body bracket 101 side and whose top is located on the stopper means 121 side.

The shape of the hole 203 formed on the stopper means 121 side is a triangular shape whose bottom is located on the stopper means 121 side and whose top is located on the body bracket 101 side.
Therefore, when the magnet body 122 moves from the hole 201 or the hole 203 to the non-hole forming portion 205, the contact area between the magnet body 122 and the arm 103 gradually increases, and the magnetic attraction force of the magnet body 122 to the arm 103 is When the magnet body 122 reaches the non-hole forming portion 205, the maximum value is obtained.

  As shown in FIGS. 3 and 4, a stopper cushion 104 is provided at the other end of the arm 103 protruding from the hole 102a of the case 102, and the arm 103 is bent to prevent the arm 103 from coming off. Stopper means 121 for performing the above is formed.

Next, the operation of the door check device having the above configuration will be described. As the door moves in the opening direction or in the closing direction, the arm 103 moves forward and backward with respect to the case 102.
At this time, the magnet body 122 in the case is in sliding contact with the arm 103. When the arm 103 advances and retreats with respect to the case 102 and the magnet body 122 reaches the non-hole forming portion 205 of the arm 103 (portion where there is no recess of the arm 103), the opening and closing of the door is temporarily prohibited and the door is checked. .

Further, when the door is moved in the opening direction or the closing direction, the magnet body 122 slides on the arm 103, and the movement in the opening direction or the movement in the closing direction is continued.
When the door is fully opened, the stopper means 121 comes into contact with the case 102, and further movement of the door in the opening direction is prohibited.

According to such a configuration, the following effects can be obtained.
(1) The magnet body 122 is in sliding contact with the arm 103, and no abnormal noise is generated by performing a door check according to the magnitude of the magnetic attraction force of the magnet body 122 to the arm 103. In addition, the door checking power does not decrease even when used for a long time.
(2) By changing the size and shape of the holes 201 and 203, the magnetic attractive force of the magnet body 122 on the arm 103 can be arbitrarily set.
(3) A large door check force is provided by providing a cushion 124 as an urging member for urging the magnet body 122 toward the arm 103 in the space on the back side of the magnet body 122 in the bottomed recess of the case 102. Can be obtained.
(4) The magnet body 122 has one magnetic pole on the first surface 301a which is the surface facing the arm 103, and the second surface 301b which is the surface opposite to the first surface 301a is the other magnetic pole. By comprising the magnet 301 and the yoke 303 made of soft iron formed so as to cover the surface other than the second surface 301b of the magnet 301, a large magnetic attractive force can be efficiently obtained with a small magnet.
(5) The magnet body is arranged so as to sandwich the arm 103, and is composed of a pair of magnet bodies 122 (first magnet body and second magnet body) that can be magnetically attracted to the upper surface and the lower surface of the arm 103. The device can be made compact.

  The present invention is not limited to the above embodiment. In the above embodiment, the hole 201 and the hole 203 that penetrate the arm 103 are used as the concave portion, but a bottomed hole (groove) formed on the surface of the arm 103 may be used.

It is a perspective view of the door check apparatus of an example. It is sectional drawing in the cutting line CC of FIG. It is sectional drawing in the cutting line DD of FIG. It is a disassembled perspective view in the case of FIG. It is a perspective view of the conventional door check apparatus. FIG. 6 is a cross-sectional view taken along a cutting line AA in FIG. 5. It is sectional drawing in the cutting line BB of FIG. It is a disassembled perspective view in the case of FIG.

Explanation of symbols

102 Case 103 Arm 122 Magnet body 201, 203 hole

Claims (4)

A body bracket fixed to the vehicle body side,
An arm whose one end is rotatably attached to the body bracket;
In the bottom wall of the bottomed recess provided in the center, a case in which a hole for penetrating the arm is formed in the bottomed recess,
Stopper means provided on the other end side of the arm to prevent the arm from coming off,
The cover is disposed so as to cover the opening of the bottomed recess of the case, and has a cover in which a hole through which the arm is inserted is formed at a position facing the hole formed in the bottomed recess,
In the door check device in which one of the case and the cover is provided on the door side,
The arm is formed of a magnetic material,
A magnet body that magnetically attracts to the arm is disposed in the case,
A door check device characterized in that a concave portion that does not come into contact with the magnet body is provided on a surface of the arm on which the magnet body is magnetically attracted to change a contact area between the magnet body and the arm.   2. A biasing member for biasing the magnet body toward the arm is provided in a bottomed recess of the case and in a space on the back side of the magnet body. Door check device. The magnet body is
A magnet having one magnetic pole on the first surface, which is the surface facing the arm, and the other magnetic pole on the second surface, which is the surface opposite to the first surface;
A yoke that contacts the second surface, extends in the first surface direction, contacts the arm, and guides the magnetic flux generated by the magnet to the arm;
The door check device according to claim 1 or 2, characterized by comprising: The magnet body is
The first magnet body and the second magnet body, which are arranged so as to sandwich the arm from the rotation center axis direction of the arm in the bottomed concave portion of the case, respectively. 4. The door check device according to any one of 3.

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