JP2006112033A - Hinge and seat opening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small hinge having a simple structure.
In the present invention, a shaft 30 is inserted into first and second brackets 10 and 20 swinging around a shaft 30 and a cylindrical coil portion 41, and from both sides of the coil portion 41. Extending end portions 42 and 43 are locked to the first and second brackets 10 and 20, respectively, and are incorporated in the shaft 30 and the coil spring 40 that urges the first and second brackets 10 and 20 to move away from each other. The rotary damper 50 is characterized in that the rotating damper 50 makes the separating operation of the first and second brackets 10 and 20 slow against the urging force of the coil spring 40.
[Selection] Figure 1

Description

  The present invention relates to a hinge and a seat opening device.

  2. Description of the Related Art Conventionally, as a seat opening device for assisting the opening operation of a seat installed in a vehicle, a device having a spring and a rotary damper is known (see, for example, Japanese Patent Application Laid-Open No. 11-115844). Here, the spring serves to open the seat by its elasticity, and the rotary damper serves to slow down the seat opening operation by the braking force exerted by the spring.

However, for example, in the case of using a spiral spring as a spring as in the seat opening device disclosed in Japanese Patent Application Laid-Open No. 11-115844, the outer diameter of the spring itself is obtained in order to obtain a spring force that can open the seat. However, there is a disadvantage that the size of the apparatus is increased. Since the size of the device affects the installation space, the device using the spiral spring cannot be applied to a small vehicle that cannot secure a sufficient installation space.
In the case of using a spiral spring, a slit for fixing the end of the spring is formed on the shaft to which the end of the spiral spring is fixed. However, by forming the slit, the strength of the shaft is increased. There was a problem that the processing cost was reduced or the processing cost was increased.
Further, in the seat opening device disclosed in the above publication, in order to transmit the force of the spring to the seat, a shaft portion, a lever portion, a connecting rod, and an arm bracket are required between the spring and the seat. It has the disadvantage of being complicated and not easy to assemble.
Further, such a seat opening device requires a separate hinge for joining the seat and the vehicle body, and there is a problem that the manufacturing cost is high due to the large number of parts.

JP-A-11-115844

  This invention is made | formed in view of the said situation, Comprising: It aims at providing the hinge and sheet | seat release apparatus which are small and have a simple structure.

In order to solve the above-described problems, the present invention provides the following hinge and seat opening device.
(1) first and second brackets swinging about an axis;
The shaft is inserted into the cylindrical coil portion, and ends extending from both sides of the coil portion are locked to the first and second brackets, respectively, in a direction in which the first and second brackets are brought close to or away from each other. An energizing coil spring;
A hinge having a rotary damper built in the shaft and slowing the approaching or separating operation of the first and second brackets against the biasing force of the coil spring.
(2) a first bracket attached to a seat installed in the vehicle;
A second bracket attached to the vehicle body and connected to the first bracket via a shaft;
The shaft is inserted into the cylindrical coil portion, and the end portions extending from both sides of the coil portion are respectively locked to the first and second brackets, and the urging force that can open the sheet is applied to the sheet. A coil spring to be applied;
A seat opening device, comprising: a rotary damper that is built in the shaft and makes the opening operation of the seat slow against the biasing force of the coil spring.

  According to the present invention described in the above (1) and (2), since the coil springs in which the end portions extending from both sides of the coil portion are respectively engaged with the first and second brackets are used as the springs. In addition, the first and second brackets can prevent the strength from being lowered. In addition, since the shaft connecting the first and second brackets is inserted into the coil portion of the coil spring and the rotation damper is built in the shaft, the overall size of the apparatus can be made extremely small. Become. Further, since the force of the coil spring and the braking force of the rotary damper can be transmitted directly to the first and second brackets, the structure can be extremely simplified. Moreover, since it is only necessary to fix each of the first and second brackets to the attachment target, it can be easily assembled and the manufacturing cost can be reduced. Furthermore, since it has a function as a hinge and a function for assisting the opening / closing operation, it is possible to reduce the number of parts without requiring another hinge.

  Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.

  FIG. 1 is an exploded perspective view of a hinge according to Embodiment 1 of the present invention. As shown in this figure, the hinge according to the present embodiment includes a first bracket 10, a second bracket 20, a shaft 30, a coil spring 40, and a rotary damper 50.

  The first bracket 10 includes a plate-like attachment portion 11 and first and second connection portions 12 and 13 that protrude from both ends of the attachment portion 11 in a direction substantially orthogonal to the attachment portion 11. Is done. Here, the attachment portion 11 has a hole 11a through which a fixing screw is inserted, the first connection portion 12 has a circular hole 12a into which the shaft 30 is fitted, and the second connection portion 13 has a joint 60. A square hole 13a into which is inserted is formed.

  Similarly to the first bracket 10, the second bracket 20 also has a plate-like attachment portion 21, and first and second connection portions 22 that protrude from both ends of the attachment portion 21 in directions substantially orthogonal to the attachment portion 21. , 23. Here, the attachment portion 21 has a hole 21 a through which a fixing screw is inserted, the first connection portion 22 has a circular hole 22 a into which the joint 60 is fitted, and the second connection portion 23 has a shaft 30. A square hole 23a into which each fits is formed.

  The first and second brackets 10 and 20 are connected via a shaft 30 and provided so as to be able to swing with respect to each other about the shaft 30.

  The shaft 30 in the present embodiment is substantially circular in cross section, and has a rectangular first engaging portion 31 protruding from one end surface 30a and a circular second engaging portion protruding from the end surface of the first engaging portion 31. 32. The first engaging portion 31 is fitted in the hole 23 a formed in the second connecting portion 23 of the second bracket 20, and the second engaging portion 32 is formed in the first connecting portion 12 of the first bracket 10. It fits into the hole 12a. The first connection portion 12 of the first bracket 10 and the second connection portion 23 of the second bracket 20 are formed on the washer 70 and the washer 70 that are disposed outside the first connection portion 12 of the first bracket 10. The screw 30 is inserted into the hole 70 a and is connected to the shaft 30 so as not to be detached from the shaft 30 by using a screw 80 coupled to the screw hole 33 formed in the shaft 30.

  The shaft 30 in the present embodiment is also provided with a hollow portion 34 that opens to the other end face 30 b, and a recess 35 is formed in the bottom wall of the hollow portion 34.

  The coil spring 40 is a torsion coil spring. The coil spring 40 in the present embodiment plays a role of urging the first and second brackets 10 and 20 in a direction in which they are separated from each other. As shown in FIG. 2, the shaft 30 is inserted into the cylindrical coil portion 41 of the coil spring 40. Thus, there is an advantage that the kinking of the coil spring 40 can be prevented by inserting the shaft 30 into the coil portion 41. Further, end portions 42 and 43 extending from both sides of the coil portion 41 are respectively locked to the first and second brackets 10 and 20, and the attachment portion 11 of the first bracket 10 and the attachment portion 21 of the second bracket 20 are close to each other. By doing so, the coil spring 40 is twisted.

  The rotary damper 50 in the present embodiment plays a role of slowing the separating operation of the first and second brackets 10 and 20 against the urging force of the coil spring 40. The rotary damper 50 may be any type as long as it can perform such a function. However, it is preferable to use a swing type that can exhibit a large braking force even if it is small.

  As shown in FIG. 3, the rotary damper 50 according to the present embodiment is an oscillating type including a vane 53 that oscillates in a main body case 52 filled with a viscous fluid as the rotating shaft 51 rotates. The rotational speed of the rotating shaft 51 is decelerated using the resistance of the viscous fluid generated by the swinging of 53. The rotary damper 50 in this embodiment is provided with a check valve 54 so that the braking force can be exerted only when the rotary shaft 51 rotates in one direction (see FIG. 3). Further, the main body case 52 is provided with a convex portion 55 protruding from the bottom surface (see FIG. 1).

  The rotary damper 50 is built in the shaft 30 as shown in FIG. That is, the rotation damper 50 is provided such that the main body case 52 is accommodated in the hollow portion 34 of the shaft 30 and the rotation shaft 51 protrudes from the other end surface 30 b of the shaft 30. The convex portion 55 protruding from the bottom surface of the main body case 52 fits into the concave portion 35 formed on the bottom wall of the hollow portion 34 and functions as a detent for the main body case 52. The rotating shaft 51 is installed so as to fit into a slot 62 formed in the shaft portion 61 of the joint 60 and rotate as the joint 60 rotates.

  As shown in FIG. 1, the joint 60 is formed with a circular first engaging portion 63 and a square second engaging portion 64, and the first engaging portion 63 is a second bracket. The second engagement portion 64 fits into the hole 13a formed in the second connection portion 13 of the first bracket 10 so that the first and second engagement portions 64 fit into the hole 22a formed in the first connection portion 22 of the first bracket 10. It plays the role which connects 2nd brackets 10 and 20. The joint 60 is attached using a C-shaped ring 90 that fits into the groove 65 formed in the shaft portion 61 so as not to drop off. Further, the flange 66 formed on the joint 60 serves to prevent the second connection portion 13 of the first bracket 10 and the first connection portion 22 of the second bracket 20 from being detached from the joint 60.

  The hinge according to the present embodiment can be widely used as a joining member of a structure that swings around a central axis. For example, when applied to a seat installed in a vehicle such as a motorcycle, the seat It can function as an opening device.

  That is, when the hinge according to the present embodiment functions as a seat opening device, as shown in FIG. 4, the first bracket 10 is attached to the seat 100 installed in the vehicle, and the second bracket is mounted on the vehicle body 110 side. 20 is attached. According to the present embodiment, the assembly to the vehicle only needs to fix the first and second brackets 10 and 20 to the attachment target, so that the operation is easy and the operation is performed in a very short time. Can do. Therefore, it is possible to reduce the manufacturing cost.

  In addition, since the shaft 30 connecting the first and second brackets 10 and 20 is inserted into the coil portion 41 of the coil spring 40, and the rotation damper 50 is built in the shaft 30, the size of the entire apparatus. There is an advantage that the installation space can be made very small. Therefore, it can be applied not only to large vehicles such as motorcycles but also to small vehicles such as scooters.

  In the state where the seat 100 is in the use position, the coil spring 40 is twisted by the attachment portion 11 of the first bracket 10 and the attachment portion 21 of the second bracket 20 approaching each other so as to face each other.

  As shown in FIG. 5, when the seat 100 is opened from the use position to the fully open position, the energy accumulated in the coil spring 40 is released, so that the first bracket 10 is centered on the shaft 30 and the second bracket 10 is moved to the second bracket. The sheet 100 is swung in a direction away from 20, and the sheet 100 is pushed up in the opening direction.

  At this time, the rotary damper 50 rotates as the joint 60 rotates due to the swing of the first bracket 10, the rotating shaft 51 rotates, and the vane 53 presses the viscous fluid in the main body case 52. Causes viscous fluid resistance. The resistance is applied to the first bracket 10 as a force for braking the separating operation of the first bracket 10, so that the opening operation of the seat 100 is slowed against the urging force of the coil spring 40. . Therefore, the sheet 100 is released at a slow speed.

  On the other hand, when the seat 100 is closed from the fully open position to the use position, the coil spring 40 is twisted as the first bracket 10 approaches the second bracket 20. Therefore, it is possible to prevent the seat 100 from colliding with the vehicle body 110 vigorously. Further, since the rotary damper 50 is unidirectional with the check valve 54, the braking force of the rotary damper 50 is not applied to the seat 100 when the seat 100 is closed.

  When the hinge according to the present embodiment is applied as a seat opening device, it has both a function as a hinge for joining the seat 100 and the vehicle body 110 and a function for assisting the opening and closing operation of the seat 100. Therefore, it is possible to reduce the number of parts.

  FIG. 6 is an exploded perspective view of the hinge according to the second embodiment of the present invention. As shown in this figure, the hinge according to the present embodiment is different from the hinge according to the first embodiment in that a plurality of coil springs 40 are provided.

  According to the present embodiment, as shown in FIGS. 6 to 8, since the two coil springs 40 are provided, the first and second brackets 10 and 20 are compared with the case where the number of the coil springs 40 is one. The energizing force can be increased.

  Similarly to the hinge according to the first embodiment, the hinge according to the present embodiment can also function as a seat opening device, and when applied as a seat opening device, functions as a hinge that joins the seat and the vehicle body. And a function for assisting the opening / closing operation of the seat, it is possible to reduce the number of parts without requiring another hinge.

  The angle at which the first bracket 10 can swing relative to the second bracket 20 can be arbitrarily set. Specifically, in the first and second embodiments described above, as shown in FIG. 9, the mounting portion 11 of the first bracket 10 is positioned substantially parallel to the mounting portion 21 of the second bracket 20. For example, as shown in FIG. 10, the mounting portion 11 of the first bracket 10 is provided with the second bracket 10 so that the first bracket 10 can swing until the first bracket 10 is about 90 degrees away from the first bracket 10. The first bracket 10 can also be set so as to be able to swing with respect to the 20 attachment portions 21 from a state separated about 90 degrees until it is further separated about 90 degrees. FIG. 11 is a perspective view illustrating a state in which the attachment portion 11 of the first bracket 10 is further separated from the attachment portion 21 of the second bracket 20 by about 90 degrees from the state in which the attachment portion 11 is separated from the attachment portion 21 of the second bracket 20.

  FIG. 12 is a perspective view of a hinge according to Embodiment 3 of the present invention. As shown in this figure, in the hinge according to the present embodiment, the end portions 42 and 43 of the coil spring 40 are locked to the outer surfaces of the first and second brackets 10 and 20, respectively. This is different from the hinge according to the second embodiment in that it plays a role of biasing the second brackets 10 and 20 in the direction in which they approach each other.

  Further, in the hinge according to the present embodiment, the rotary damper 50 built in the shaft 30 makes the approaching action of the first and second brackets 10 and 20 slow against the urging force of the coil spring 40. This is different from the hinge according to the second embodiment.

  According to the present embodiment, the coil spring 40 is twisted by swinging the first bracket 10 relative to the second bracket 20 in a direction in which the first bracket 10 is relatively separated. For example, as shown in FIG. 13, from the state where the mounting portion 11 of the first bracket 10 is separated from the mounting portion 21 of the second bracket 20 from about 90 degrees to a state where it is further separated by about 90 degrees. When the first bracket 10 is swung, the coil spring 40 is twisted. Then, by releasing the energy accumulated in the coil spring 40, the first bracket 10 swings around the shaft 30 in the direction approaching the second bracket 20, and returns to the original state, that is, the first. The mounting portion 11 of the bracket 10 returns to a state where it is separated from the mounting portion 21 of the second bracket 20 by about 90 degrees.

  The angle at which the first bracket 10 can swing relative to the second bracket 20 can be arbitrarily set. For example, as shown in FIG. The mounting portion 11 can also be set so that the first bracket 10 can swing from a position about 90 degrees away from the mounting portion 21 of the second bracket 20 to a substantially parallel position. FIG. 15 is a perspective view showing a state in which the attachment portion 11 of the first bracket 10 is in a position substantially parallel to the attachment portion 21 of the second bracket 20.

  The hinge according to the present embodiment can also be widely used as a joining member for a structure that swings around the central axis.

It is a disassembled perspective view of the hinge which concerns on Example 1 of this invention. It is sectional drawing of the hinge which concerns on Example 1. FIG. It is a figure which shows the internal structure of the rotation damper employ | adopted in Example 1. FIG. It is a figure which shows the state which attached the hinge which concerns on Example 1 to the vehicle. It is a figure for demonstrating the effect | action of the hinge which concerns on Example 1. FIG. It is a disassembled perspective view of the hinge which concerns on Example 2 of this invention. It is sectional drawing of the hinge which concerns on Example 2. FIG. It is a perspective view of the hinge which concerns on Example 2. FIG. It is a figure for demonstrating the effect | action of the hinge which concerns on Example 1 and 2. FIG. It is a figure for demonstrating the effect | action of the hinge which concerns on Example 1 and 2. FIG. It is a perspective view which shows the state which the attachment part of the 1st bracket was further spaced apart about 90 degree | times from the state spaced apart about 90 degree | times with respect to the attachment part of the 2nd bracket. It is a perspective view of the hinge which concerns on Example 3 of this invention. It is a figure for demonstrating the effect | action of the hinge which concerns on Example 3. FIG. It is a figure for demonstrating the effect | action of the hinge which concerns on Example 3. FIG. It is a perspective view which shows the state in which the attaching part of a 1st bracket exists in a substantially parallel position with respect to the attaching part of a 2nd bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 1st bracket 11 attachment part 11a hole 12 1st connection part 12a hole 13 2nd connection part 13a hole 20 2nd bracket 21 attachment part 21a hole 22 1st connection part 22a hole 23 2nd connection part 23a hole 30 shaft 31 1st DESCRIPTION OF SYMBOLS 1 Engagement part 32 2nd engagement part 33 Screw hole 34 Hollow part 35 Concave part 40 Coil spring 41 Coil part 42, 43 End part 50 Rotation damper 51 Rotating shaft 52 Main body case 53 Vane 54 Check valve 55 Convex part 60 Joint 61 Shaft 62 Slot 63 First engaging portion 64 Second engaging portion 65 Groove 66 Flange 70 Washer 70a Hole 80 Screw 90 C-shaped ring 100 Seat 110 Car body

Claims (2)

First and second brackets swinging about an axis;
The shaft is inserted into the cylindrical coil portion, and ends extending from both sides of the coil portion are locked to the first and second brackets, respectively, in a direction in which the first and second brackets are brought close to or away from each other. An energizing coil spring;
A hinge having a rotary damper built in the shaft and slowing the approaching or separating operation of the first and second brackets against the biasing force of the coil spring. A first bracket attached to a seat installed in the vehicle;
A second bracket attached to the vehicle body and connected to the first bracket via a shaft;
The shaft is inserted into the cylindrical coil portion, and the end portions extending from both sides of the coil portion are respectively locked to the first and second brackets, and the urging force that can open the sheet is applied to the sheet. A coil spring to be applied;
A seat opening device, comprising: a rotary damper that is built in the shaft and makes the opening operation of the seat slow against the biasing force of the coil spring.

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