JP4155247B2 - Hinge device - Google Patents

Description

  The present invention relates to a hinge device that supports an opening / closing member such as a hood or a lid of a vehicle so that the opening / closing member can be opened and closed, and more particularly to a hinge device in which the opening degree of the opening / closing member is set in two stages.

  Conventionally, as shown in FIG. 9, a cab-over type vehicle is provided with a front hood F that can be rotated in the vertical direction on the front surface of the vehicle body, and a radiator, a brake booster, and the like in a storage portion that can be opened and closed by the front hood F. Some devices are installed. The front hood F has left and right ends at the upper edge thereof connected to the vehicle body via a hinge device H.

  By the way, in the process of assembling devices such as a radiator and a brake booster in the storage part in the vehicle production line, the front hood F is desired to be opened as much as possible up to the maximum opening position S in consideration of these assembling workability. There is a request. After that, the front hood F does not need to be opened so much when it is opened for maintenance of devices such as radiators and brake boosters installed in the storage section, and after the windshield and cowl louver are attached, It is necessary to regulate the opening of the front hood F to the normal opening position R having an opening smaller than the maximum opening position S so as not to interfere with the normal opening position S.

As a conventional hinge device capable of changing the opening degree of an opening / closing member such as a hood, there is one described in Patent Document 1 below. In the hinge device of Patent Document 1, a hinge bracket fixed to a vehicle body side is supported by a hinge arm fixed to an opening / closing member so as to be rotatable by a hinge shaft, and a tip of the hinge arm is fixed to the hinge bracket. A movable stopper member capable of moving back and forth is provided, and the front end of the stopper member is advanced and retracted into the first engagement portion and the second engagement portion formed on the hinge arm, thereby being attached to the hinge bracket. The opening degree of the hinge arm can be set in two stages. The stopper can be advanced and retracted by the operator's operation, and the operator can arbitrarily select the opening degree.
Japanese Patent Laid-Open No. 11-22278

  However, in the conventional hinge device, the first and second engaging portions must be formed on the hinge arm, and the stopper member provided on the hinge bracket is selectively moved forward and backward by the operator's operation. Therefore, the number of parts is large, the structure is complicated, and the cost is high. Therefore, it is necessary for the vehicle body production line to be largely opened, but it is not suitable for an opening / closing member such as a front hood of a cab-over type vehicle that normally opens and closes at a certain small opening that does not need to be largely opened. Therefore, the present invention is simple in structure and low in cost, and can open and close the opening / closing member greatly in the vehicle body production line, and can restrict the opening degree of the opening / closing member to a smaller position during normal use thereafter. An object of the present invention is to provide a hinge device.

  The present invention superimposes the tip of the hinge bracket fixed to the vehicle body side and the tip of the hinge arm fixed to the open / close member side such as a hood or lid, and the two tips rotate relative to each other by the hinge shaft. A hinge that is connected so that an upper limit of the opening degree of the opening / closing member is regulated by a locking projection formed on a tip end of the hinge arm coming into contact with an edge locking portion of a tip end portion of the hinge bracket In the apparatus, the hinge arm is provided with a notch immediately before the locking projection, while the hinge bracket has a proximal end rotatably attached to a side surface of the hinge bracket, and a distal end of the hinge arm. Engage with the edge locking portion through the notch of the hinge arm, and interpose between the edge locking portion and the locking projection to restrict the opening of the opening / closing member to a smaller opening. Install the stopper member ( Motomeko 1). When there is no stopper member, the hinge arm's locking projection directly contacts the hinge bracket's edge locking portion and the opening and closing of the opening / closing member is restricted. Since the tip of the stopper member is interposed between the hinge bracket and the edge locking portion of the hinge bracket, the opening degree of the opening / closing member can be restricted to a small opening by the thickness of the tip of the stopper member. The tip of the stopper member can be easily installed by using a notch provided immediately before the locking projection of the hinge arm.

  The stopper member is formed in an L-shaped cross section in which the tip is bent toward the edge locking portion side of the hinge bracket, and the locking protrusion formed on the hinge arm is formed on the edge locking portion of the hinge bracket. In the maximum open state in contact, while bending the intermediate portion of the stopper member along the side surface of the hinge bracket outward, the tip is pressed from the notch of the hinge arm to the side surface of the tip of the hinge bracket, and When the hinge arm is returned in the closing direction, the tip of the stopper member follows the movement of the notch and moves toward the edge locking portion. The tip is engaged with the edge locking portion by a restoring force (claim 2). When attaching the stopper member, with the hinge arm fully open, bend the middle part of the stopper member so that the tip is pressed against the side of the hinge bracket tip from the notch of the hinge arm. Then, by returning the hinge arm in the closing direction, the tip of the stopper member can be naturally engaged with the edge locking portion of the hinge bracket, so that it does not take time and labor.

  According to the present invention, the opening degree of the opening / closing member can be changed in two stages before and after the stopper member is attached to the hinge device, and it is necessary to open it widely in the vehicle body production line, but it is usually necessary to open it greatly. It can be suitably used for an opening / closing member such as a front hood of a cab-over type vehicle that opens and closes at a certain small opening without any gap. Further, the structure can be simplified and the cost can be reduced, and the labor for attaching the stopper member is not required.

  An embodiment in which the present invention is applied to a hinge device that supports a front hood F (FIG. 9) on the front surface of a cab-over type vehicle body so as to be opened and closed in the vertical direction will be described. As shown in FIG. 1, the hinge device connects a tip of a hinge bracket 1 fixed to the vehicle body side and a tip of a hinge arm 2 fixed to the front hood side by a hinge shaft 3, and On the other hand, the hinge arm 2 can be rotated in the vertical direction from the closed position C when the front hood is closed to the maximum open position S when the front hood is fully opened. A retrofitting stopper member 4 is attached to the hinge bracket 1 so that the opening rotation position of the hinge arm 2 is restricted to the normal opening position R smaller than the maximum opening position S.

  As shown in FIGS. 1 and 2, the hinge bracket 1 includes a vertical plate-like main body portion 10 and a fixing flange 11 that is bent from the lower edge of the main body portion 10 to the rear side of the main body portion 10 at a substantially right angle and fastened to the vehicle body. And a substantially L-shaped cross section. The main body portion 10 is formed in a substantially triangular shape that rises obliquely upward and rearward, has a semicircular shape with a tip protruding rearward, and a shaft hole 31 through which the hinge shaft 3 penetrates is formed at the tip. . The main body portion 10 has a substantially Z-shaped shallow cross section in which the upper half portion including the distal end projects to the surface side opposite to the fixing flange 11 from the lower half portion through a step.

  An upper edge of the main body 10 is provided with an edge locking portion 12 at a position immediately below the tip, with which a locking projection 23 of the hinge arm 2 described later comes into contact. The main body 10 is provided with a mounting hole 13 for attaching the stopper member 4 in the approximate center of the lower half.

  As shown in FIG. 1 and FIG. 3, the hinge arm 2 includes a plate-like arm main body 20 that gently extends obliquely downward and rearward from a coupling portion 21 that is fastened to the front hood. Is curved upward in a semicircular arc shape. A shaft hole 32 that allows the hinge shaft 3 to pass therethrough is formed at the tip of the arm body 20.

  Further, a locking projection 22 is formed at the tip of the arm main body 20 on the lower edge side by bending the lower edge of the tip to the back surface at a substantially right angle. Further, an inverted U-shaped notch 23 is formed at the lower end of the distal end of the arm main body 20 so as to open downward immediately before the locking projection 22. Insertion holes 24a and 24b are formed in the middle of the arm body 20 to insert the tips of support rods (P in FIG. 9) installed on the vehicle body so that the front hood is opened when the front hood is opened. is there.

  The hinge bracket 1 and the hinge arm 2 are connected to each other so that the tip of the hinge arm overlaps the tip surface of the hinge bracket 1 and the hinge shaft 3 is inserted into the shaft holes 31 and 32 of both the hinge brackets 1 and 32 so as to be relatively rotatable in the vertical direction. is there.

  As shown in FIGS. 1 and 4, the retrofitted stopper member 4 includes an arm-shaped intermediate portion 41 extending in a gently curved shape from the base end 40 obliquely upward and rearward, and a hinge bracket orthogonal to the distal end of the intermediate portion 41. A front end portion 42 extending in the vertical direction along the rear edge of the first side forms a substantially T-shape in the horizontal direction. The stopper member 4 is an injection-molded product made of a relatively hard synthetic rubber material, and gives elasticity to the intermediate portion 41. A locking pin 44 projects from the base end 40 on the back side, and the locking pin 44 has a tapered tapered columnar shape and the tip is divided into two forks by a slit. A locking claw is provided on the outer peripheral surface of the front end of the locking pin 44.

  A metal piece is insert-molded at the front end portion 42 of the stopper member 4 over the entire length in the vertical direction. The distal end portion 42 is thicker than the intermediate portion 41, and the distal end portion 42 is provided so as to protrude toward the back side of the intermediate portion 41. As a result, the stopper member 4 has an overall L-shaped cross section (see FIG. 4B). The upper end portion of the inserted metal piece is exposed at the upper half portion of the tip end portion 42, and the stopper contact portion 43 is formed by the upper end portion of the metal piece. An engaging claw 45 protruding from the rear edge of the distal end portion 42 toward the base end 40 is provided at the lower end of the distal end portion 42 covered with the synthetic rubber material.

  Before the stopper member 4 is attached, the hinge device fixes the fixing flange 11 of the hinge bracket 1 to the vehicle body side, and fixes the front hood to the coupling portion 21 of the hinge arm 2 so that the front hood can be opened and closed. When the front hood is opened at this time, the hinge arm 2 is rotated upward with respect to the hinge bracket 1, and the front end of the locking projection 22 of the hinge arm 2 is on the movement trajectory in the opening direction as shown in FIG. The opening degree is regulated at the maximum open position S by abutting against the edge locking portion 12 at the rear edge of the hinge bracket 1 positioned.

  Next, to attach the stopper member 4, the stopper member 4 is temporarily fixed at the maximum opening position S. As shown in FIGS. 6 and 7A, the stopper member 4 is configured such that the locking pin 44 of the base end 40 is press-fitted and locked into the mounting hole 13 of the hinge bracket 1 and the base end 40 is fixed to the lower half of the hinge bracket 1. The stopper abutting portion 43 at the upper end of the distal end portion 42 is connected to the end of the hinge bracket 1 from the notch 23 of the hinge arm 2 while being superimposed on the surface of the portion and bending the intermediate portion 41 in the direction of floating from the surface of the hinge bracket 1. The surface immediately before the edge locking portion 12 is pressed and temporarily fixed. At this time, the lower end portion of the front end portion 42 is located on the rear side of the lower portion of the rear edge of the hinge bracket 1, and the engaging claw 45 is engaged with the back side of the hinge bracket 1.

  In this state, as shown in FIG. 7B, when the hinge arm 2 is turned in the closing direction (arrow Y direction), the front edge of the notch 23 of the hinge arm 2 is brought into contact with the stopper contact portion 43 of the stopper member 4. The stopper abutting portion 43 is pushed backward by the front edge of the notch 23. Accordingly, the stopper abutting portion 43 moves rearward along the surface of the hinge bracket 1 while the stopper member 4 rotates slightly downward as a whole around the locking pin 44. When the stopper abutting portion 43 moves rearward beyond the edge locking portion 12 of the hinge bracket 1, the stopper abutting portion 43 passes through the notch 23 due to the restoring force of the intermediate portion 41 that is deformed by bending. To the position immediately after the edge locking portion 12 of the hinge bracket 1 (in the direction of arrow Z).

  As a result, as shown in FIG. 8, the stopper member 4 moves to the original mounting position where the stopper abutting portion 43 overlaps the edge locking portion 12 of the hinge bracket 1 and the position immediately thereafter. At this time, the intermediate portion 41 overlaps along the surface of the hinge bracket 1, and the engagement claw 45 at the lower end of the distal end portion 42 engages with the back side of the hinge bracket 1. Since the stopper member 4 is attached to the lower half side of the hinge bracket 1, the stopper member 4 does not interfere with the closing even if the hinge arm 2 assembled on the upper half side is closed.

  After that, even if the hinge arm 2 is rotated upward in the opening direction, the stopper protrusions 43 of the stopper member 4 that the locking protrusions 22 of the hinge arm 2 overlap immediately after the edge locking portions 12 of the hinge bracket 1 are used. Therefore, the opening rotation of the hinge arm 2 is restricted to the normal opening position R (FIG. 1) whose opening is smaller than the maximum opening position S by the thickness of the stopper contact portion 43. The normal opening position R can be adjusted by changing the thickness of the stopper contact portion 43.

  According to the hinge device of the present embodiment, the stopper member 4 can be opened to the maximum opening position S before the stopper member 4 is attached, and is restricted to the normal opening position R having a smaller opening than the maximum opening position S after the stopper member 4 is attached. can do. Therefore, it is necessary to open the car body production line greatly, but it is not necessary to open it widely after the car body production line (normal), and the cab over is controlled to a certain opening smaller than the car body production line opening. It can be suitably used for a front hood of a model car.

  In the hinge device, the locking projection 22 of the hinge arm 2 can be shared as a locking portion for opening degree control at both the maximum open position S and the normal open position R, and the structure of the hinge arm 2 is simple. Can be realized.

  Further, the stopper member 4 does not need to be removed after being attached once, and the locking pin 44 of the 41 base end 40 is attached to the mounting hole of the hinge bracket 1 in a state where the distal end portion 42 is overlapped with the end face of the edge locking portion 12. 13, a simple structure in which the locking claw 45 at the lower end of the tip end portion 42 is engaged with the lower end of the rear edge of the hinge bracket 1 may be used. In addition, when the hinge arm 2 is attached, the stopper abutting portion 43 is temporarily fixed to the position immediately before the edge locking portion 12 of the hinge bracket 1 through the notch 23 when the hinge arm 2 is at the maximum open position S. In this case, the hinge arm 2 is returned to the closing direction, so that the hinge arm 2 is naturally moved to the original mounting position.

  In this embodiment, the stopper member 4 is formed of a synthetic rubber molded product. However, the present invention is not limited thereto, and the intermediate portion from the base end to the tip end may be formed of a metal leaf spring.

It is a side view of the hinge apparatus to which this invention is applied. The hinge bracket used for the said hinge apparatus is shown, FIG. 2 (A) is a side view, FIG.2 (B) is sectional drawing which follows the IIB-IIB line | wire of FIG. 2 (A). FIG. 3A is a side view and FIG. 3B is a cross-sectional view taken along line IIIB-IIIB in FIG. FIG. 4A is a side view, and FIG. 4B is a cross-sectional view taken along the line IVB-IVB in FIG. It represents the operation of the hinge device, and is a side view of the main part with the hinge arm fully opened. The operation of the hinge device is represented, and is a main part side view in a state where the hinge arm is fully opened and a stopper member is temporarily fixed to the hinge bracket. FIG. 7 (A) is a sectional view taken along line VII-VII in FIG. 6 and FIG. 7 (B) corresponds to FIG. 7 (A). It is sectional drawing which shows the movement state of a stopper member. FIG. 8 (A) shows the operation of the hinge device, and FIG. 8 (A) is a side view of the main part in a state where the opening degree of the hinge arm is restricted to the normally open position by the stopper member, and FIG. 8 (B) is FIG. 8 (A). It is sectional drawing which follows the VIIIB-VIIIB line. It is a front side view of a cab over type car provided with a front hood.

Explanation of symbols

F Front hood 1 Hinge bracket 12 End edge locking part 2 Hinge arm 22 Locking protrusion 23 Notch 3 Hinge shaft 4 Stopper member 40 Base end 41 Intermediate part 43 Stopper contact part (tip of stopper member)

Claims (2)

The front end of the hinge bracket fixed to the vehicle body and the front end of the hinge arm fixed to the open / close member side such as a hood or lid are overlapped, and both ends are connected to each other by a hinge shaft so as to be relatively rotatable. In the hinge device in which the upper limit of the opening degree of the opening and closing member is regulated by the engagement protrusion formed on the tip end of the hinge arm abutting on the edge engagement portion of the tip edge of the hinge bracket,
The hinge arm is provided with a notch immediately before the locking projection,
On the other hand, the base end of the hinge bracket is fixed to the side surface of the hinge bracket so as to be rotatable, and the front end engages with the edge locking portion through the notch of the hinge arm, thereby A hinge device characterized in that a stopper member is provided between the stopper and the locking projection to restrict the opening of the opening / closing member to a smaller opening. The stopper member is formed in an L-shaped cross section in which the tip is bent toward the edge locking portion side of the hinge bracket,
While the locking projection formed on the hinge arm is in the maximum open state in which it contacts the edge locking portion of the hinge bracket, the intermediate portion of the stopper member along the side surface of the hinge bracket is bent outward, When the tip is pressed against the side surface of the tip of the hinge bracket from the notch of the hinge arm and the hinge arm is returned in the closing direction, the tip of the stopper member follows the movement of the notch and the end 2. The hinge device according to claim 1, wherein the tip engages with the edge locking portion by a restoring force of the intermediate portion when moving toward the edge locking portion and exceeding the edge locking portion. .

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