JPH046475Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention is suitable for use in, for example, a copying machine, etc., in which the lid, etc., which can be moved up and down depending on the thickness of the copy, is hinged. Concerning a hinge for a raised lid.

<<Prior Art>> Conventionally, as shown in FIGS. 5 and 6, the above-mentioned hinge includes a main body member which is supported by a fixed body d such as a cabinet in a vertically movable manner by providing a cam at the upper end of a support rod b. A and a movable member f to be attached to the upper lid e which is opened and closed relative to the fixed body d are pivotally connected by a support shaft g, and a sliding body h is slid in the front and rear direction on the movable member f. A device is known which is movable and is attached so as to come into elastic contact with the cam surface c' of the member a by means of an internal spring i.

However, in the above hinge, since the movable member f has a sliding body h and a spring i, the upper part is larger than the main body member a, which makes up the lower part. If you try to use it, a spring with a large spring constant will be installed inside, so the upper part will become even larger, resulting in an imbalance between the upper and lower parts in terms of size and weight, and it will be difficult to attach it to the fixed body d above. However, there are also problems such as problems.

<<Problems to be Solved by the Invention>> The present invention attempts to solve the above-mentioned problems.The main body member is made vertically long and has a vertically elongated hole along the vertical direction thereof, while the movable member is A horizontally elongated hole is formed along the front and back direction, and a spring is installed in each of the vertically long hole and the horizontally long hole, and a sliding body is fitted to be slidable in the direction of each hole, and each sliding body is connected to the other side. By making elastic contact with each cam surface provided on the movable member and the main body member, and pivoting the two members, it is possible to reduce the overall size, and it is possible to reduce the burden on large and heavy lids. The purpose is to provide something that can be used and has a good balance between the upper and lower parts.

<Means for Solving the Problems> In other words, the present invention has a main body member that is to be attached to a desired fixed body so as to be movable in the vertical direction, and a movable member that is to be attached to a lid that can be opened and closed with respect to the fixed body. member, and the main body member is vertically long,
On the other hand, the movable member has a horizontally long hole extending in the front-rear direction, and a spring is attached to the vertically long hole and the horizontally long hole, respectively, and the movable member slides in the direction of each hole. The above-mentioned problems are solved by incorporating a movably fitted sliding body, and making elastic contact with each cam surface provided on the movable member serving as its counterpart and the main body member. It is something.

<<Embodiment>> Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. As shown in FIGS. 1 to 4, a main body member is supported by a fixed body 1 such as a cabinet so as to be movable up and down. 2, a movable body 4 to be fixed with screws or the like to the upper lid 3 that is opened and closed with respect to the fixed body 1, and a sliding body that is slidably incorporated in the main body member 2 and the movable member 4, respectively. 5, 6, 6' and springs 7, 8, 8' as main members.

The main body member 2 has a support rod 9 which is elongated vertically and has an elongated hole 9a with a circular cross section in the vertical direction, and an integrally expanded support rod 9 on both sides in the width direction at the upper end of the support rod 9. It has a pair of cam portions 10 each having a substantially rectangular planar shape, and a cam surface 11 is curved from the front surface to the upper surface of the cam portion 10.
is fitted into a mounting hole 12 formed in the top wall 1a of the fixed body 1, and is mounted so as to be supported so as to be movable up and down.

Further, between the cam portions 10 of the member 2, there is provided a fitting groove portion 13 having a substantially concave shape from the front and opening in the front-rear direction.

The main body member 2 is preferably integrally molded from synthetic resin or made from steel, and in either case, it is designed to have sufficient strength.

The pair of cam portions 10 have a shaft hole 15 extending in the width direction through which the support shaft 14 is inserted.As clearly shown in FIG.
The radius R from 5 is formed to be minimum at the upper part 11a and maximum at the front.

The movable member 4 is integrally formed of synthetic resin, steel, etc., and has a cam portion 17 integrally extending rearward to a desired length from the center of the rear end of the thick plate-like portion 16. Cam surface 1 from the rear surface to the bottom surface
8 is curved, and engagement recesses 18a and 18b are provided at both ends of the cam surface 18 for engaging and holding a sliding pin 24, which will be described later. , two horizontally elongated holes 19 and 19' extending in the front-rear direction are provided on the left and right sides of the rear end of the thick plate-like portion 16, opening rearward and parallel to each other.

In addition, an appropriate number of screw holes 21, 21, . . ., which are used for fixing to the upper lid 3 with screws 20, penetrate in the vertical direction at appropriate positions of the thick plate-shaped portion 16 and the cam portion 17. It has been done.

Furthermore, the cam portion 10 of the main body member 2 includes:
Shaft holes 26, 2 into which the support shaft 14 is inserted
6 penetrates in the left and right direction, and at the bottom,
In order to insert and install a sliding pin 24, which will be described later to be in elastic contact with the cam surface 18, so as to be able to slide along the vertical direction, guide elongated holes 22, 22, which are long in the vertical direction, are passed through in the horizontal direction. On the other hand, a sliding pin 25, which will be described later, is inserted between the thick plate-like portion 16 and the cam portion 17 of the movable member 4 so as to be able to come into elastic contact with the cam surface 11 so as to be slidable in the front-rear direction. A guide elongated hole 23, which is long in the front-rear direction, is passed through in the left-right direction so as to be constructed.

The sliding bodies 5, 6, 6' are integrally molded of synthetic resin or the like, and are adapted to fit the vertically elongated hole 9a and the horizontally elongated holes 19, 19'. Concave grooves 5a and 6 for engaging the respective sliding pins 24 and 25 are provided at the center of the upper end surface of the sliding bodies 6 and 6', and at the center of the rear end surfaces of the sliding bodies 6 and 6'.
a and 6a' are respectively recessed in the diametrical direction.

Further, the cam surface 18 of the movable member 4 also fits into the shaft hole 15.
The radius from the rear engagement recess 18a is the minimum,
It is formed to be maximum near the lower engagement recess 18b.

The vertically elongated hole 9a of the support rod 9 in the main body member 2 and the horizontally elongated holes 19, 1 of the movable member 4
After fitting the springs 7, 8, 8' into the respective springs 9', insert the sliding pins 24, 25 into the guide slots 22, 22, 23, respectively, with the springs 5, 6, 6' fitted therein. The sliding pins 24, 25 are respectively engaged with the grooves 5a, 6a, 6a' of the sliding bodies 5, 6, 6'.

Further, the main body member 2 and the movable member 4 are connected to the shaft holes 26, 26 of the cam portion 10 and the shaft hole 1 of the cam portion 17 in a state where the cam portion 17 is fitted into the fitting groove 13.
The sliding pin 25 incorporated in the movable member 4 slides on the cam surface 11 of the main body member 2 by the elastic force of the springs 8 and 8', respectively. It is brought into elastic contact via the moving bodies 6, 6',
On the other hand, on the cam surface 18 of the movable member 4, the main body member 2
The sliding pin 24 incorporated in the sliding pin 24 is configured to be brought into elastic contact via the sliding body 5 by the elastic force of the spring 7.

In the structure described above, in the closed state shown by solid lines in FIGS. 2 and 4, the sliding body 5 is moved toward the cam portion 17 of the movable member 4 by the spring 7, that is, upward in the figures. By being energized,
The sliding pin 24 is located in the lower engagement recess 18b of the cam surface 18.
On the other hand, the sliding bodies 6, 6' are held in engagement with
The sliding pin 25 is elastically urged against the front surface of the cam surface 11 by being resiliently biased toward the cam portion 10 of the main body member 2, that is, toward the right in the figure, by the springs 8 and 8'. The upper lid 3 is in the closed state (in this state, the upper lid 3 is in the closed position A in Fig. 4 so that the upper lid 3 is fully pressed against the copy).
It is inclined with respect to the horizontal position A' so that the free end side of the A' is lowered. ) is held.

When the lid 3 is opened from the closed state, the sliding pin 24 touches the cam surface 18, while the sliding pin 25
The upper lid 3 is opened by sliding on the cam surfaces 11, but in the illustrated example, the cam surfaces 11 and 18 allow the lid to be moved manually from the closed position A to the position B opened approximately 20 degrees. The upper lid 3 can be opened and closed,
When the lid 3 is opened until it slightly exceeds this position B, the radius R of the cam surfaces 18 and 11 from the support shaft 14 is gradually reduced.
The springs 7, 8, 8' are expanded, and the sliding pins 24, 25 slide on the cam surfaces 18, 11, respectively, so that the upper lid is moved from the position B to the position D shown in the figure. 3 can be stopped freely, and furthermore, the raising lid 3 is gradually opened from the above-mentioned position N to the opening position C, and the sliding pin 24 engages with the engagement recess 18a, and the fourth The lid is kept in the open state at the open position C indicated by the two-dot broken line in the figure.

Here, the angles of positions A to C are set to 80 degrees, and the angles of positions B to C vary depending on the weight of the lid 3, but it is recommended that they be set to approximately 45 to 60 degrees. good.

Further, in the lid opening position C, the sliding bodies 5, 6, 6' move by the effective stroke of the guide slots 22, 23 due to the extension of the springs 7, 8, 8'.
10 side, respectively.

Also, when closing the upper lid 3, it is closed by the operation opposite to that described above, but at this time, when the upper lid 3 is closed from the opening position C to a position slightly beyond the above-mentioned position B. After that, the lid is automatically closed to the closing position A.

In the illustrated example, the cam surface 1 of the movable member 4
Engagement recesses 18a for the sliding pin 24 at both end portions of the slide pin 8,
18b, but engagement recesses for the sliding pins 25 may be provided at both end portions of the cam surface 11 in the main body member 2.
It is also possible to provide the above-mentioned engaging recesses in correspondence with both end portions of 8 and 11, respectively.

<<Effects of the invention>> As explained above, the hinge for the lift lid according to the present invention is constructed so that the main body member 2 which is to be attached to the fixed body 1 in a vertically movable manner, and the hinge which is attached to the lift cover 3. A cam surface is provided on the mating member in order to pivotally connect the movable member 4 to the main body member 2 and apply a lid opening force and a closing force to the movable member 4 with respect to the main body member 2,
In order to bring the sliding body into elastic contact with the cam surface, springs 7, 8, which elastically bias the sliding body toward the cam surface are provided.
8' is incorporated into both the main body member 2 and the movable member 4, and each sliding body 5, 6, 6' biased by each spring 7, 8, 8' is connected to the movable member 4 as a mating member. Each cam surface 18, 1 provided on the main body member 2, respectively.
Since both members 2 and 1 are made to come into elastic contact with each other, the opening force and the closing force determined by the spring force are determined by the spring force.
4 is reinforced by the springs 7, 8, and 8' incorporated in the upper part 4, so that even if the overall size is reduced, it can be used with a sufficiently large and heavy lid. Since the lower part is well-balanced, not only the design as a whole is improved, but also the installation is excellent.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the hinge for a lift lid according to the present invention, FIGS.
The figure is an explanatory side view of the same embodiment, and FIGS. 5 and 6 are a plan view and a vertical sectional side view, respectively, showing conventional examples of a hinge for a lift lid. 1... Fixed body, 2... Main body member, 3... Lifting lid, 4... Movable member, 5, 6, 6'... Sliding body,
7, 8, 8'... Spring, 9a... Vertical hole, 19,
19'...Horizontal hole, 11, 18...Cam surface.

Claims (1)

[Scope of utility model registration request] A main body member that is to be attached to a desired fixed body so as to be movable in the vertical direction, and a movable member that is to be attached to a lid that can be opened and closed with respect to the fixed body are pivotally connected, and the main body member is vertically long. On the other hand, the movable member has a horizontally long hole extending in the front-rear direction, and a spring is attached to the vertically long hole and the horizontally long hole, respectively, and the movable member slides in the direction of each hole. A hinge for an upper lid, which includes a movably fitted sliding body, and each sliding body is brought into elastic contact with a movable member serving as a mating member and each cam surface provided on a main body member, respectively.