JP5087155B2 - Door hinge with vehicle check function - Google Patents

Description

  The present invention relates to a door hinge that is attached to a vehicle body so that a door of a vehicle can be opened and closed, and more particularly to a door hinge with a check function for a vehicle having a function of maintaining the opening of the door.

In general, a door of a vehicle is attached to a vehicle body so as to be opened and closed by a door hinge, and receives a holding resistance by a door checker provided between the vehicle body and the door when the door is opened to a set opening degree.
However, in such a door mounting structure, since it is necessary to provide a door checker separately from the door hinge, the number of parts increases. For this reason, a door hinge (door hinge with a check function) having a function of holding the door at a set position has been developed.

In the conventional door hinge with a check function, the vehicle body side hinge member and the door side hinge member are connected to each other by a hinge shaft so as to be relatively rotatable, and when both the hinge members are rotated to a set angle, the rotation resistance is increased. Check resistance applying means is provided (see, for example, Patent Documents 1 and 2).
Specifically, for example, the engagement roller biased in the radial direction is disposed on the outer peripheral side of the hinge shaft, and a locking groove is formed at a set angle position on the outer peripheral surface of the hinge shaft, so that the vehicle body side hinge member When the door-side hinge member is rotated to the set angle, the engagement roller is engaged with the locking groove to increase the rotation resistance.

JP 2001-49940 A JP 2002-166725 A

  However, this conventional door hinge with a check function has a structure in which the holding resistance is directly applied from the radial direction of the hinge shaft. Therefore, in order to provide a large holding resistance, the outer diameter of the hinge is greatly enlarged. I must. However, since the outer diameter of the hinge attached to the vehicle is greatly limited due to the installation space, it is difficult to ensure a sufficiently large holding resistance.

  Therefore, the present invention is intended to provide a door hinge with a check function for a vehicle that can obtain a sufficient holding resistance without greatly increasing the outer diameter.

The invention according to claim 1, which solves the above-mentioned problem, is a door hinge with a check function (for example, a door hinge 1 in an embodiment described later) of a vehicle having a function of maintaining the opening of the door, and is fixed to the vehicle body. A vehicle body side hinge member (for example, a vehicle body side hinge arm 2 in an embodiment described later), a door side hinge member (for example, a door side hinge arm 3 in an embodiment described later), and the vehicle body side A hinge shaft (for example, a hinge shaft 4 in an embodiment described later) for connecting the hinge member and the door side hinge member so as to be relatively rotatable, and a movable member (for example, described later) that can be displaced in a direction substantially along the hinge shaft. In the embodiment, the slider 9) and the operation converting hand for converting the relative rotation operation of the vehicle body side hinge member and the door side hinge member into a displacement substantially along the axial direction of the movable member. (For example, a protrusion 14 and a guide groove 20 in an embodiment to be described later) and check resistance applying means for applying a holding resistance against the operating force to the movable member (for example, a guide hole 13 and a resistance control plate in an embodiment to be described later) 15), and the operation converting means includes a guide portion (for example, a guide groove 20 in an embodiment described later) spirally formed on the outer surface of the hinge shaft along the axis of the hinge shaft. The movable member is guided by the guide portion and displaced in the axial direction of the hinge shaft, and the resistance applying portion of the check resistance applying means is provided at a plurality of locations on a moving track substantially along the axial direction of the movable member. It is provided .
Thus, when the door is opened and closed, the vehicle body side hinge member and the door side hinge member rotate relative to each other about the hinge axis, and this rotation operation is performed in the axial direction of the movable member by the function of the spiral guide portion of the operation converting means. It is converted into a displacement that is substantially along. At this time, when the check resistance applying means applies a holding resistance against the operating force to the movable member, the vehicle body side hinge member and the door side hinge member receive the holding resistance and the opening degree is held. The holding resistance applied from the check resistance applying means to the movable member is amplified by the action converting means, and acts on the vehicle body side hinge member and the door side hinge member so as to prevent the rotation of both.

  According to a second aspect of the present invention, in the door hinge with a check function of the vehicle according to the first aspect, the guide portion is a groove provided on an outer surface of the hinge shaft (for example, a guide groove 20 in an embodiment described later). The movable member is at least partially engaged with the groove.

  According to a third aspect of the invention, in the door hinge with a check function of the vehicle according to the first or second aspect, a plurality of the guide portions are provided on the outer peripheral surface of the hinge shaft at equal intervals in the circumferential direction. Features.

According to a fourth aspect of the present invention, in the door hinge with a check function for a vehicle according to any one of the first to third aspects, the entire moving trajectory of the movable member (for example, a sphere 51 in an embodiment described later) is provided. The check resistance applying means (for example, a spiral guide groove 48, a holding portion 50a, and a holding groove 49 in an embodiment described later) is provided in a covering case (for example, a case 42 in an embodiment described later). To do.
Accordingly, the holding resistance is applied to the movable member by the check resistance applying means provided in the case.

According to a fifth aspect of the present invention, in the door hinge with a check function of the vehicle according to the fourth aspect, the case is formed in a square cross section, and a check resistance applying means is provided at a corner of the case. Features.
Accordingly, the holding resistance is applied to the movable member by the check resistance applying means at the corner portion of the case that is separated from the center of the hinge shaft.

According to a sixth aspect of the present invention, in the door hinge with a check function for a vehicle according to any one of the first to fifth aspects, the check resistance applying means is provided symmetrically with respect to the center of the hinge shaft. It is characterized by being.
As a result, the holding resistance is received in a well-balanced manner without being biased around the hinge axis.

According to a seventh aspect of the present invention, in the door hinge with a check function for a vehicle according to any one of the first to third aspects, the check resistance applying means is arranged around the hinge axis by an axial displacement of the movable member. An elastic member (for example, a leaf spring 16 in an embodiment described later) that elastically deforms in the circumferential direction is provided.
Thereby, the application and release of the check resistance can be clearly switched by the elastic deformation of the elastic member.

  According to this invention, the relative rotation operation of the vehicle body side hinge member and the door side hinge member is converted into a displacement substantially along the axial direction of the movable member by the function of the helical guide portion, and the check resistance Since the applying means applies a holding resistance against the operating force to the movable member, a sufficiently large holding resistance can be obtained by amplifying the holding resistance by the check resistance applying means by the operation converting means. Therefore, in the present invention, a sufficiently large holding resistance can be obtained without causing a significant expansion of the outer diameter.

  According to the invention described in claim 4, since the check resistance applying means is provided in the case covering the periphery of the movable member, the product cost can be reduced by reducing the number of parts.

  According to the fifth aspect of the present invention, since the holding resistance can be applied by the check resistance applying means at the corner portion of the case separated from the center of the hinge shaft, the door hinge as a whole can be efficiently enlarged without causing an increase in size. A large holding resistance can be obtained.

  According to the sixth aspect of the present invention, since the holding resistance applied from the check resistance applying means is symmetric with respect to the center of the hinge shaft, a more stable hinge opening / closing operation can be obtained.

According to the seventh aspect of the present invention, since the holding resistance can be given and released more elastically by the elastic deformation of the elastic member, a feeling of moderation during the door opening / closing operation can be enhanced.

The 1st Embodiment of this invention is shown, and the longitudinal cross-sectional view of the upper half part of the door hinge with a check function. The disassembled perspective view of a part of door hinge of the embodiment. The another exploded perspective view of a part of door hinge of the embodiment. Sectional drawing corresponding to the AA cross section of FIG. 1 which shows the same embodiment. Sectional drawing corresponding to FIG. 1A-A cross section which shows the same embodiment. The perspective view of the door hinge with a check function of a reference example . The disassembled perspective view of the door hinge of the reference example . The disassembled perspective view of the door hinge of the reference example . The perspective view of the door hinge with a check function of 2nd Embodiment of this invention. The disassembled perspective view of the door hinge of the embodiment. BB sectional drawing of FIG. 9 which shows the same embodiment. The perspective view of the spring plate of the embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
First, a first embodiment of the present invention shown in FIGS. 1 to 5 will be described.
FIG. 1 is a longitudinal sectional view showing a substantially half portion in the axial direction of a door hinge 1 with a check function according to the present invention, and FIGS. 2 and 3 are exploded perspective views showing some of the components inside the door hinge 1. is there.
In FIG. 1, 2 is a vehicle body side hinge arm (vehicle body side hinge member) attached to a door opening of a vehicle (not shown), and 3 is a door side hinge arm (door side hinge member) attached to a door (not shown). is there. Although only one end of the door hinge 1 in the axial direction is shown in FIG. 1, these hinge arms 2 and 3 are similarly provided symmetrically at both ends in the axial direction of the door hinge 1.

  A hinge shaft 4 is supported and fixed to the vehicle body side hinge arm 2, and the door side hinge arm 3 is rotatably supported via bushes 5 in the vicinity of both axial ends of the hinge shaft 4. The door-side hinge arms 3 on both sides in the axial direction are integrally coupled with a substantially cylindrical check unit 6 surrounding the periphery of the hinge shaft 4, and the check unit 6 is connected to the door-side hinge arm 3 when the door is opened and closed. It rotates with the rotation. A semicircular guide groove 20 is formed on the outer peripheral surface of the portion of the hinge shaft 4 that passes through the check unit 6. A plurality of guide grooves 20 are formed on the outer peripheral surface of the hinge shaft 4 at equal intervals in the circumferential direction.

  In the check unit 6, a perforated disc-shaped end plate 8 through which the hinge shaft 4 is inserted is fixed to both ends of the cylindrical case 7, and a substantially circular shape is formed in a space surrounded by the end plate 8 and the cylindrical case 7. A plate-like slider 9 (movable member) is provided so as to be displaceable in a direction along the hinge shaft 4.

  As shown in FIG. 2, the end plate 8 has a through hole 10 through which the hinge shaft 4 is inserted at the center, and four linear locks on the inner surface facing the inner periphery of the cylindrical case 7. A groove 11 is formed. The locking groove 11 is disposed along the tangential direction of the circumference of the through hole 10 and so as to surround the periphery of the through hole 10 in a substantially rectangular shape.

The slider 9 is formed with a through-hole 12 into which the hinge shaft 4 is slidably fitted at the center, and is formed in an arc shape concentrically with the through-hole 12 at the periphery of the through-hole 12. Four guide holes 13 are provided.
4 and 5 are cross-sectional views corresponding to the AA cross section of FIG. As shown in these drawings, four hemispherical protrusions 14 are formed at equal intervals in the circumferential direction on the inner peripheral surface of the through hole 12 of the slider 9, and each protrusion 14 corresponds to the hinge shaft 4. The guide groove 20 is engaged. Accordingly, when a relative rotational force with respect to the hinge shaft 4 is applied, the slider 9 rotates while being displaced in the axial direction while the projection 14 is guided by the guide groove 20. In the case of this embodiment, the protrusion 14 of the slider 9 and the guide groove 20 of the hinge shaft 4 constitute an operation converting means.

  A resistance control plate 15 is inserted and engaged with each arcuate guide hole 13 of the slider 9. The resistance control plate 15 is formed by molding a resin material 17 on both side edges of a rectangular plate spring 16 having a constant width. The resin material 17 is spaced apart in the longitudinal direction by a plurality of stopper protrusions 18a, 18b,. Is formed. These stopper protrusions 18a... 18b are similarly formed at corresponding positions on both side edges of the leaf spring 16. Further, the stopper protrusions 18a, 18b, which are adjacent to each other in the longitudinal direction of the leaf spring 16 form a pair, and the pair of the stopper protrusions 18a, 18b further has an arbitrary distance in the longitudinal direction of the leaf spring 16. They are spaced apart. The distance between the pair of stopper protrusions 18a and 18b is set to be approximately the same as the thickness of the slider 9, and the guide hole 13 of the slider 9 can be fitted between the protrusions 18a and 18b.

  Further, both end portions in the longitudinal direction of each resistance control plate 15 are fitted in the engaging grooves 11 facing the end plates 8 and 8, respectively, and the rotational force is transmitted to the end plates 8 and 8 through the door side hinge arm 3. Sometimes, the rotational force is transmitted to each resistance control plate 15 as a rotational force around the hinge shaft 4. When the rotational force is transmitted to the resistance control plates 15 in this way, the rotational force is transmitted to the slider 9 through the guide holes 13, and part of the slider is driven by the guide function of the projection 14 and the guide groove 20. 9 is converted into thrust along the axial direction.

When the slider 9 is displaced in the axial direction by the rotation of the end plates 8 and 8, the guide hole 13 portion of the slider 9 is relatively slid on the resistance control plate 15, but the slider 9 is moved to the resistance control plate. When the stopper protrusion 18a or 18b on the upper surface 15 is reached, the displacement is limited by the stopper protrusion 18a or 18b. When a large rotational force is applied to the end plates 8 and 8 at this time, the leaf spring 16 is moved to FIG. As shown in FIG. 4, the stopper protrusion 18a or 18b is retracted by bending (elastically deforming) in the width direction, that is, in the circumferential direction around the hinge shaft 4, so that the slider 9 gets over the stopper protrusion 18a or 18b. Thus, when the slider 9 gets over the one stopper protrusion 18a or 18b and is positioned between the stopper protrusions 18a and 18b (see FIG. 3), the slider 9 receives the holding resistance by the both stopper protrusions 18a and 18b. become.
Here, a gentle slope is provided on the surface opposite to the opposing surface of the stopper protrusions 18a and 18b, and the slider 9 is relatively smoothly moved to the holding position between the stopper protrusions 18a and 18b by this gentle inclination. To be guided to. On the other hand, a steep slope is provided on the opposing surfaces of the stopper protrusions 18a and 18b, and a large holding resistance is applied to the slider 9 at the holding position between the stopper protrusions 18a and 18b.
In the case of this embodiment, the resistance control plate 15 and the guide hole 13 of the slider 9 constitute check resistance applying means.

As described above, the door hinge 1 is configured such that the relative pivoting operation of the vehicle body side hinge arm 2 and the door side hinge arm 3 is performed by the guide mechanism by the guide groove 20 of the hinge shaft 4 and the protrusion 14 of the slider 9. When the slider 9 reaches the position of the stopper projection 18a or 18b on the resistance control plate 15, the slider 9 receives the holding resistance by the stopper projection 18a or 18b. By changing the operating direction by the guide mechanism, the resistance force by the stopper protrusion 18a or 18b can be greatly amplified, and a large holding resistance can be applied to the door of the vehicle.
And in this door hinge 1, since holding resistance is not provided directly so that rotation from the radial direction of the hinge axis | shaft 4 may be prevented, the expansion of an outer diameter can be suppressed to the minimum.

Further, in the door hinge 1 of this embodiment, since a plurality of pairs of stopper protrusions 18a and 18b are provided in the longitudinal direction on the resistance control plate 15, the angle at which the door opening degree can be maintained is set to a plurality of stages. In addition, the merchantability of the vehicle can be improved.
In particular, the door hinge 1 is configured such that the resistance control plate 15 forming the stopper protrusions 18a and 18b is arranged along the direction of the hinge shaft 4 where the length can be easily secured, so that the outer diameter is not increased. The holding position can be easily multistaged.

In the door hinge 1, the stopper projections 18 a and 18 b are allowed to move backward by a plate spring 16 that can be deformed in the arcuate guide hole 13 of the slider 9. Therefore, the holding resistance can be clearly applied and released with a sufficient bending stroke of the leaf spring 16. Therefore, it is possible to increase the sense of moderation in the door opening / closing operation and enhance the merchantability.
Particularly in this embodiment, as shown in FIGS. 4 and 5, the radially inner wall of the arcuate guide hole 13 contacts one surface of the leaf spring 16 in the initial state where the leaf spring 16 is not bent and deformed. Therefore, the bending direction of the leaf spring 16 can be limited by this wall, and the deformation behavior of the leaf spring 16 and thus the obtained holding resistance can be stabilized.

Further, in the door hinge 1, the resin material 17 is integrally molded along both edges in the width direction of the leaf spring 16 having a constant width, and the stopper projections 18 a and 18 b are provided in a plurality of stages by the resin material 17. Therefore, it is possible to easily form the resistance control plate 15 that constitutes a part of the check resistance applying means. Therefore, by adopting this configuration, the manufacturing cost can be reduced. Further, since the portion that slides in the guide hole 13 is formed by the resin material 17, the wear resistance during operation can be easily increased by selecting an appropriate resin material 17.
Furthermore, in this door hinge 1, since the stopper protrusions 18a and 18b are formed by the resin material 17 on both edges of the leaf spring 16 having a constant width, the specifications of the number of steps and intervals of the stopper protrusions 18a and 18b can be changed. There is also an advantage that can be easily handled.

  Further, in this door hinge 1, the resistance control plate 15 constituting the check resistance applying means and the guide hole 13 of the slider 9 are provided symmetrically with respect to the center of the hinge shaft 4, so that the holding resistance is around the hinge shaft 4. There is an advantage that it is always balanced and stable operation can be obtained.

6-8 is a figure which shows a reference example.
FIG. 6 is a perspective view showing the entire door hinge 101 with a check function of this reference example , and FIGS. 7 and 8 are perspective views in which the door hinge 101 is disassembled. In these drawings, 30 is a vehicle body side hinge member, and 31 is a door side hinge member.
The vehicle body side hinge member 30 and the door side hinge member 31 are referred to as a pair of hinge arms 30a, 30a and 31a, 31a (hereinafter referred to as "vehicle body side hinge arm 30a" and "door side hinge arm 31a", respectively). The door side hinge arms 31a and 31a are disposed inside the vehicle body side hinge arms 30a and 30a. As shown in FIG. 7, a hinge shaft 32 passing through the door side hinge arms 31a, 31a is fixed to the vehicle body side hinge arms 30a, 30a, and the door side hinge arms 31a, 31a are not shown on the hinge shaft 32. It is rotatably supported via a bush or the like.

  Further, on the outer periphery of the hinge shaft 32, a pair of half-cylindrical sleeve pieces 33, 33 are attached to both ends of the hinge shaft 31 a, 31 a, and are rotated together with the door-side hinge arms 31 a, 31 a. Yes. As shown in FIG. 8, a pair of spiral guide grooves 34 and 34 having a semicircular cross section are formed on the outer peripheral surface of the hinge shaft 32. The pair of spiral guide grooves 34 and 34 are formed so as to be gently inclined in the same direction with respect to the axis of the hinge shaft 32 and symmetrical with respect to the axis of the hinge shaft 32. On the other hand, a linear guide groove 35 having a semicircular cross section along the axial direction of the hinge shaft 32 is formed on the inner surface of each sleeve piece 33 facing the outer peripheral surface of the hinge shaft 32. The spiral guide groove 34 on the hinge shaft 32 side and the linear guide groove 35 on the sleeve piece 33 side correspond one-to-one, and the sphere 36 as a movable member can roll between the corresponding guide grooves 34 and 35. It is mated. A substantially C-shaped tie belt 37 (elastic member) made of a spring steel plate is attached to the outer periphery of the pair of sleeve pieces 33, 33 arranged on the outer periphery of the hinge shaft 32. Thus, the sleeves 33 and 33 are pressed in the proximity direction. The tie belt 37 is formed to have substantially the same axial length as the sleeve pieces 33 and 33, and applies a uniform pressing force over almost the entire axial direction of the sleeve pieces 33 and 33. Therefore, in the case of the door hinge 101, the sphere 36 is pressed against the inner surfaces of the spiral guide groove 34 and the linear guide groove 35 corresponding to each other by the elasticity of the tie belt 37.

In the door hinge 101, the hinge shaft 32 integral with the vehicle body side hinge member 30 and the sleeve pieces 33, 33 integral with the door side hinge member 31 as described above include the spherical body 35 in the spiral guide groove 34 and the linear guide groove 35. Therefore, when a relative rotational force is applied to the door side hinge member 31 and the vehicle body side hinge member 30, the spherical body 36 rotates integrally with the linear guide groove 35, so that the spiral guide is rotated. Rolling along the groove 34, during which the relative rotation of the hinge members 30, 31 is converted into a displacement substantially along the axial direction of the sphere 36 .

In the case of this reference example , the contact resistance between the guide grooves 34 and 35 with the sphere 36 is a holding resistance against the operating force . The pressing force of the tie belt 37 mainly affects the initial operation load of the door hinge 101, and the inclination angle of the spiral guide groove 34 with respect to the axis of the hinge shaft 32 mainly affects the operation load during operation of the door hinge 101. .

  In the door hinge 101, the relative rotational displacement of the door side hinge member 31 and the vehicle body side hinge member 30 is converted into a displacement substantially along the axial direction of the sphere 36 via the spiral guide groove 34 and the linear guide groove 35. Since both guide grooves 34 and 35 have a structure in which holding resistance is applied to the sphere 36, a sufficiently large holding resistance can be obtained without increasing the outer diameter.

Further, in this door hinge 101, the spiral guide groove 34 and the straight guide groove 35 themselves form a resistance imparting portion and receive a holding resistance over the entire movement track of the sphere 36. Convenience can be improved and the merchantability of the door opening / closing part can be improved. In the case of this door hinge 101, since the spiral guide groove 34 and the linear guide groove 35 are constantly pressed against the sphere 36 by the elastic force of the tie belt 37, a stable holding resistance can be obtained at all times. In particular, in this reference example , the axial length of the tie belt 37 is formed to be substantially the same as the axial length of the sleeve piece 33, and the pressing force by the tie belt 37 is always applied to the entire area of the guide grooves 34 and 35. Therefore, it is possible to obtain a stable holding resistance at all door openings.

  Further, in this door hinge 101, the spiral guide groove 34 and the linear guide groove 35 constituting the check resistance applying means are provided symmetrically with respect to the center of the hinge shaft 32, so that the holding resistance is always around the hinge shaft 32. To balance. Accordingly, it is possible to obtain a stable operation at all times.

  In this door hinge 101, since the holding resistance is determined by the setting of the inclination angle of the spiral guide groove 34 and the spring force of the tie belt 37, products having different holding resistances can be relatively changed by changing the inclination angle and the holding resistance. There is an advantage that it can be made easily.

Finally, a second embodiment of the present invention shown in FIGS. 9 to 12 will be described.
FIG. 9 is a perspective view showing the entire door hinge 201 with a check function according to this embodiment, and FIG. 10 is an exploded perspective view of the door hinge 201.
In these drawings, 40 is a vehicle body side hinge member, and 41 is a door side hinge member. The door-side hinge member 41 includes a cylindrical case 42 having a rectangular cross section and a pair of L-shaped arms 43, 43 coupled to both ends of the case 42. Both the L-shaped arms 43, 43 are doors. The case 42 is configured to be rotated along with the rotation of the door, and the hinge shaft 44 penetrating the case 42 in the axial direction is formed on the opposing walls 43a and 43a of the L-shaped arms 43 and 43. It is rotatably supported via 45 and 46. Ends on both sides of the hinge shaft 44 pass through the respective walls 43a of the L-shaped arm 43 and are coupled to a pair of hinge arms 47, 47 of the vehicle body side hinge member 40, respectively.

  On the outer peripheral surface of the hinge shaft 44, four spiral guide grooves 48 having a semicircular cross section are formed. The four spiral guide grooves 48 are gently inclined at the same angle with respect to the axis of the hinge shaft 44 and are formed on the outer periphery of the hinge shaft 44 at an equal pitch.

  The case 42 of the door-side hinge member 41 is formed with holding grooves 49 extending along the longitudinal direction at the four corners therein. As shown in the sectional view of FIG. 11, each holding groove 49 has a groove width on the bottom side wider than a groove width on the entrance side, and a bottom surface formed in a gentle arc shape. On the bottom side of each holding groove 49, a spring plate 50 made of an elastic material such as a spring steel material having a length reaching from the one end to the other end in the longitudinal direction of the case 42 is attached. As shown in the cross-sectional view of FIG. 11, each spring plate 50 is bent in a direction opposite to the bending direction of the holding part 50 a at both edges of the holding part 50 a and the holding part 50 a having a substantially arc-shaped cross section that is continuous in the longitudinal direction. Spring portions 50b, and spring portions 50b, 50b at both edges thereof are fitted into the widened portions 49a on the bottom side of the corresponding holding grooves 49. When each spring plate 50 is attached to the holding groove 49 in this way, the curved surface of the holding portion 50a faces the hinge shaft 44 and is movable between the holding portion 50a and the spiral guide groove 48 of the hinge shaft 44. A spherical body 51 as a member is fitted to be able to roll. The reduced width portion 49 b of each holding groove 49 is a space for accommodating the sphere 51.

  Also, as shown in the perspective view of FIG. 12, a pair of stopper protrusions 52a and 52b are integrally formed at predetermined positions in the longitudinal direction of the holding portions 50a of the spring plates 50. The pair of stopper projections 52a and 52b is formed at two locations on the holding portion 50a so that the spherical body 51 can be held between each pair of stopper projections 52a and 52b. In the case of this embodiment, the resistance applying portion that applies the holding resistance to the sphere 51 is configured by the stopper protrusions 52a and 52a, and the check resistance applying means includes the holding grooves 49 at the four corners of the case 42 and the corresponding holding portions. 50 a and a spiral guide groove 48 of the hinge shaft 44.

In the door hinge 201, holding grooves 49 are provided at four corners inside the substantially rectangular case 42 of the door-side hinge member 41, the holding grooves 49, the spring plate 50 at the bottom of the holding groove 49, the hinge The sphere 51 is fitted over the corresponding spiral guide groove 48 on the shaft 44, but the elasticity of the spring plate 50 is always applied to the sphere 51, so that the sphere 51 is always held with a substantially constant force. It is configured to be pressed against the portion 50 a and the spiral guide groove 48.
Therefore, when the door side hinge member 41 and the vehicle body side hinge member 40 are relatively rotated, the respective spheres 51 are engaged with the holding grooves 49 at the four corners of the case 42 and rotate together with the door side hinge member 41. At the same time, it rolls along the spiral guide groove 48 on the hinge shaft 44, during which the relative rotation of the hinge members 41, 40 is converted into a displacement substantially along the axial direction of the sphere 51. When the sphere is thus displaced in the holding groove 49 to the set position in the axial direction, the sphere 51 is fitted between the stopper protrusions 52a and 52b on the spring plate 50 and receives a holding resistance. When a further turning operation force is further applied to the door-side hinge member 41, the sphere 51 moves over the stopper protrusions 52a and 52b that are currently fitted, and again at a position where it is fitted to the next stopper protrusions 52a and 52b. Receives holding resistance.
In the case of this embodiment, the operation converting means is constituted by the holding groove 49 on the case 42 side, the spring plate 50, and the spiral guide groove 48 of the hinge shaft 44.

  In the door hinge 201, the relative rotational displacement of the door side hinge member 41 and the vehicle body side hinge member 40 is approximately in the axial direction of the sphere 51 via the holding groove 49 of the case 42 and the spiral guide groove 48 of the hinge shaft 44. The relative rotational position of the hinge members 41 and 40 is held by the resistance that the spherical body 51 receives from the stopper projections 52a and 52b on the spring plate 50, resulting in an increase in the outer diameter. And a sufficiently large holding resistance can be obtained.

  In the door hinge 201, a holding groove 49 is provided along the axial direction in the case 42 of the door-side hinge member 41 that covers the periphery of the hinge shaft 44, and the sphere 51 is fitted in the holding groove 49. Therefore, the number of parts can be reduced because there is no need to provide a dedicated part for forming the holding groove 49 or a dedicated part for covering the periphery of the hinge shaft 44. Therefore, this can reduce the manufacturing cost. Further, in this door hinge 201, since the case 42 covering the periphery of the hinge shaft 44 is integrally provided on the door side hinge member 41, entry of foreign matters such as dust and water into the fitting portion of the sphere 51 is prevented. There is also an advantage that the seal structure can be simplified.

  Further, in the case of the door hinge 201, since the holding groove 49 constituting the check resistance applying means is provided at the inner corner of the case 42, the holding resistance of the sphere 51 is sufficiently separated from the center of the hinge shaft 44. Can be granted. Therefore, a large holding resistance can be obtained efficiently without increasing the size of the door hinge 201 as a whole.

  Further, in this door hinge 201, the holding groove 49 on the case 42 side and the spiral guide groove 48 on the hinge shaft 44 side constituting the check resistance applying means are provided symmetrically with respect to the center of the hinge shaft 44, respectively. The holding resistance is balanced around the hinge shaft 44, and a stable operation can be obtained at all times.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.

1, 201 ... Door hinge 2 ... Car body side hinge arm (car body side hinge member)
3 ... Door side hinge arm (door side hinge member)
4 ... Hinge shaft 9 ... Slider (movable member)
13 ... Guide hole (check resistance applying means)
14 ... Projection (operation converting means)
15 ... Resistance control plate (check resistance applying means)
16 ... leaf spring (elastic member)
18a, 18b ... Stopper protrusion (resistance imparting part)
20 ... Guide groove (guide part, groove)
DESCRIPTION OF SYMBOLS 40 ... Car body side hinge member 41 ... Door side hinge member 42 ... Case 44 ... Hinge shaft 48 ... Spiral guide groove (guide part, groove | channel, check resistance provision means)
49. Holding groove (check resistance applying means)
50a ... Holding section (check resistance applying means)
51 ... Sphere (movable member)
52a, 52b ... Stopper protrusion (resistance imparting portion)

Claims (7)

A door hinge with a check function of a vehicle having a function of maintaining the opening of the door,
A vehicle body side hinge member fixed to the vehicle body;
A door side hinge member fixed to the door;
A hinge shaft for connecting the vehicle body side hinge member and the door side hinge member so as to be relatively rotatable;
A movable member displaceable in a direction substantially along the hinge axis;
An action converting means for converting a relative turning action of the vehicle body side hinge member and the door side hinge member into a displacement substantially along the axial direction of the movable member;
Check resistance applying means for applying a holding resistance against the operating force to the movable member,
The operation converting means includes a guide portion formed in a spiral shape along the axis of the hinge shaft on the outer surface of the hinge shaft,
The movable member is guided by the guide portion and displaced in the axial direction of the hinge shaft ,
A door hinge with a check function for a vehicle , wherein the resistance applying portion of the check resistance applying means is provided at a plurality of locations on a moving track substantially along the axial direction of the movable member . The guide portion is a groove provided on the outer surface of the hinge shaft,
The door hinge with a check function for a vehicle according to claim 1, wherein at least a part of the movable member is engaged with the groove.   The door hinge with a check function for a vehicle according to claim 1 or 2, wherein a plurality of the guide portions are provided on the outer peripheral surface of the hinge shaft at equal intervals in the circumferential direction.   The door hinge with a check function for a vehicle according to any one of claims 1 to 3, wherein the check resistance applying means is provided in a case that covers the entire moving track of the movable member.   5. The door hinge with a check function for a vehicle according to claim 4, wherein the case is formed in a square cross section, and check resistance applying means is provided at a corner of the case.   The door hinge with a check function for a vehicle according to any one of claims 1 to 5, wherein the check resistance applying means is provided symmetrically with respect to a center of the hinge shaft. The said check resistance provision means is provided with the elastic member elastically deformed in the circumferential direction around the said hinge axis | shaft by the axial direction displacement of the said movable member. Door hinges with check function for vehicles.

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