JPH0119740Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is designed to attach rotating members that need to be held open, such as doors including the bonnet and inspection door of various vehicles, to mounting members on the body side. This relates to a friction lock hinge that is used when the hinge is installed so that it can be opened and closed.

[Conventional technology]

Conventionally, for the above-mentioned door, for example,
Like the one described in Publication No. 20815, it is held in the open state using a fixing rod or stay.

[The problem that the idea attempts to solve]

However, this method had problems in that it had a complicated structure and required large parts.

[Means to solve the problem]

The present invention has the following means to solve the above problems. In other words, a shaft fixed to the other side of the mounting member and the rotating member is rotatably mounted in an outer cylinder fixed to one side of the mounting member, which is a fixed member, and a rotating member that rotates with respect to the member. A lock spring, which is a coil spring or a leaf spring having a substantially circular cross-section with a portion missing, is pivotally supported, is fitted in contact with the shaft, and is housed in an outer cylinder, and has one end attached to the outer cylinder. while fixing the lock, and engaging the other end with a lock release member rotatably provided with respect to the shaft;
Alternatively, the locking member is formed as a lock release member that is free with respect to the outer cylinder, and the lock spring is configured to apply a tightening force to the shaft when the shaft rotates relative to the outer cylinder in one direction. This is a characteristic feature.

Note that Japanese Utility Model Publication No. 56-54200 describes a lid opening/closing device, in which the lid is pressed against a mounting member, which is a fixed member, in the direction of opening at all times by a coil spring. A brake plate is provided which is pivotally mounted on a shaft and which applies enough braking force to open and close the lid when it is opened and closed, so that the lid can be opened and closed gently. They are different.

[Effect]

By having the above-mentioned means, the present invention locks the shaft of the hinge itself, thereby making it possible to hold a rotating member such as a vehicle door in an open state with a simple structure and using small parts. By changing the direction of the lock spring, you can freely select the direction of rotation to lock.

〔Example〕

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

1 to 5 show an embodiment of the present invention.
In these figures, reference numeral 1 denotes an outer cylinder, and a shaft 2 is rotatably supported at both ends of the small diameter of the outer cylinder 1. It protrudes from both ends.

A lock spring 3 made of a coil spring is accommodated in the outer cylinder 1, and one end of this spring 3 is connected to the outer cylinder 1.
It is locked and fixed. Also, lock spring 3
is the shaft 2 whose outer diameter is slightly larger than its inner diameter.
The lock release member 4 is fitted into the inner portion of the outer cylinder 1, and the other end thereof is engaged with a notch 4a provided at one end of the lock release member 4.

As shown in FIGS. 1 and 2, the lock release member 4 has an arcuate portion 4b having the notch 4a rotatably fitted onto the shaft 2, and the other end 4c protruding from the arcuate portion 4b. , loosely passes through a hole 1a provided in the outer cylinder 1 and protrudes from the outer periphery of the outer cylinder 1. Said outer cylinder 1
Both ends of the shaft 2 protruding from the outer cylinder 1 are fixed to mounting plates 5 and 6, respectively, and an operating cable 7 is connected to the other end 4c of the lock release member 4.
The inner cable 7a of the operating cable 7 is connected, and the outer tube 7b of the operating cable 7 is supported and fixed to a support plate 8 fixed to the mounting plate 5. In addition,
Reference numeral 9 in FIG. 1 is a ring for preventing the shaft 2 from coming off, which is fitted on the outer side of both ends of the outer cylinder 1 of the shaft 2.

In the friction lock hinge 10 according to an embodiment of the present invention configured as described above, the outer peripheral surface of the shaft 2 and the inner diameter part of the lock spring 3 are normally in contact with each other, and the lock spring 3 is rotated in the winding direction of the lock spring 3 made of a coil spring. Therefore, this is the lock spring 3 for shaft 2.
There are two directions: one direction in which it is locked and prevented from rotating due to friction, and the other direction in which it rotates almost freely.

That is, the rotation of the shaft 2 in the direction of arrow a in FIG. 1 is caused by the frictional engagement between the lock spring 3 and the shaft 2, which causes a force to act in the direction in which the lock spring 3, which is a coil spring, tightens the shaft 2. Therefore, the frictional resistance that the shaft 2 receives increases, and the shaft 2 is locked to the outer cylinder 1 via the locking spring 3.

However, when the shaft 2 is rotated in the direction of arrow b in FIG. 1, the shaft 2 can be rotated with a small force while the frictional resistance between the lock spring 3 and the shaft 2 is small. In addition, by pulling the inner cable 7a of the operation cable 7, the lock release member 4 rotates around the shaft 2, and the lock release member 4 is rotated around the shaft 2, and its diameter is Since the spring 3 is expanded, the frictional resistance between the spring 3 and the shaft 2 is reduced or eliminated, and the shaft 2 can almost freely rotate in the direction of the arrow a.

Next, an example of how this embodiment is used will be described.
FIG. 6 shows an example in which the friction lock hinge 10 described above is used to attach the hood 11 and trunk hood 12 of a passenger car to the body 13 side. In this example, a mounting plate 5 fixed to the outer cylinder 1 is installed so that the bonnet 11 and trunk hood 12, which are rotating members, are held open relative to the body 13, which is a mounting member. body 13
On the side, a mounting plate 6 fixed to the shaft 2 is fixed to the bonnet 11 and hood 12 sides, respectively, and the closing direction of these is made to coincide with the direction of arrow a in FIG. In this way, the bonnet 11 and the hood 12 can be held open at the hinge portion without using a fixing rod or stay, and the bonnet 1
1. The hood 12 can be opened with a small force, and by extending the inner wire 7a of the operating cable 7 into the passenger compartment and pulling it intermittently, the bonnet 11 and the hood 12 can be gradually closed by their own weight. can.

In addition, Figures 7 and 8 show storage door 1 of a large bus.
4. Friction lock hinge 17 according to this invention for attaching rear engine inspection door 15 to body 16 side
This is an example using . In this example, it is only necessary to replace the mounting plates fixed to both ends of the outer cylinder and shaft of the above-mentioned embodiment with the mounting members 18 and 19 shown in FIG. It is almost the same as when used for etc. In the example of use shown in FIGS. 7 and 8, the inner wire of the operation cable may be connected to the handle of the door, and the inner wire may be pulled by operating the handle.

In the present invention, in order to increase the locking force of the shaft by the lock spring, the number of lock springs can be increased by increasing the length of the lock spring or by providing lock springs on both sides of the lock release member. good.

In addition, the present invention uses a ninth coil spring instead of a coil spring.
A lock spring 20 consisting of a substantially circular plate spring with a partially cut out cross section as shown in FIGS. One end of the shifter 20 is fixed to the outer cylinder, the other end is extended to the outside of the shifter 2, loosely passes through a notch provided in the outer cylinder 1, and protrudes to the outside of the outer cylinder 1. The lock spring 20 may be formed on a member 21, and the inner wire of the operating cable may be connected to this member 21.
A friction material may be attached to the inner surface of the brake shoe for use as a lining material for a brake shoe. In addition,
The operating cable may be omitted and the lock release member may be operated directly.

[Effect of idea]

As explained above, the friction hinge of the present invention is
It is used when attaching a rotating member such as a vehicle door to a mounting member so that it can be opened and closed.The rotating member can be held open at the hinge part, the structure is simple, no large parts are required, and the direction of the locking spring can be adjusted. You can easily and freely select the direction of rotation in which the rotating member is locked by simply changing the rotation direction.Furthermore, by connecting an operating cable to the unlocking member, the rotating member can be locked in a location away from the rotating member, such as in the passenger compartment. An advantage is obtained that the member can be closed by its own weight.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of the main part showing one embodiment of the present invention, Figs. 2 and 3 are sectional views taken along the - line and - line of Fig. 1, and Fig. 4 is a longitudinal cross-sectional view of the main part of the present invention. FIG. 5 is a front view of one embodiment, FIG. 5 is a side view of the same, FIG. 6 is a schematic side view of one usage example of the present invention, FIG. FIG. 9 is a perspective view showing the main parts of another embodiment of the present invention, and FIG. 10 is a cross-sectional view showing the structure of the embodiment of FIG. 9 and the outer cylinder. It is a diagram. 1... Outer cylinder, 1a... Hole, 2... Shaft, 3
...Coil spring, 4...Lock release member, 4a...
...notch, 4b...arc-shaped portion, 4c...other end,
5, 6...Mounting plate, 7...Operation cable, 7a...
...Inner cable, 7b...Outer tube, 8
... Support plate, 9 ... Stop ring, 10 ... Friction lock hinge, 11, 12 ... Bonnet, hood (rotating member), 13 ... Body (mounting member),
14, 15... Storage door, inspection door (rotating member),
16... Body (attachment member), 17... Friction lock hinge, 18, 19... Attachment member, 20... Lock spring, 21... Lock release member.

Claims (1)

[Scope of utility model registration request] In an outer cylinder fixed to one side of a mounting member that is a fixed member and a rotating member that rotates with respect to the mounting member,
A coil spring or a coil spring with a part missing, which rotatably supports a shaft fixed to the other side of the mounting member and the rotating member, fits in contact with the shaft, and is housed in an outer cylinder. A coil spring made of a plate spring having a circular cross section has one end fixed to the outer cylinder and the other end engaged with a lock release member rotatably provided with respect to the shaft, or The locking member is formed as a lock release member that is free with respect to the outer cylinder, and the lock spring is configured to apply a tightening force to the shaft when the shaft rotates relative to the outer cylinder in one direction. Friction lock hinge.