JPH03140128A - Opening/closing device for cover of electric hot-water heater or the like - Google Patents

Abstract

PURPOSE:To easily realize the cover opening/closing device which stops smoothly at the time when opening of the cover ends, and does not give a shock, etc., to the body by energizing the cover body by a torsion coil spring in the opening direction, and adjusting the energizing force by making a fitting position of an end part of the spring variable. CONSTITUTION:In the vicinity of a bearing part of a fitting metallic fixture 21, a decelerating part 24 whose tip is roughly a circular arc is formed, and a part thereof is pressed against an end part 25 of a lever 20. A spring energizes a projection 18 by an arm part 26, and the fitting metallic fixture 21 by an arm part 27 in a state that the cover body 3 is closed, and by pressing a lock release control 9, an engagement to a claw receiving part 8 of a lock member 5 is released, and the cover body 3 is brought to arc-turning in the opening direction by using the bearing part 22 as the rotation center through the fitting metallic fixture 21. In accordance with whether the arm part 27 of the spring 16 is positioned in the upper end face 31 being higher or positioned in a second upper end face 32 being lower, energizing force in the opening direction of the cover body 3 becomes different, and in the case it is positioned in the upper end face 31, energizing force becomes weak, two kinds of energizing force can be obtained, and it is possible to allow it to further approach the opening speed being a target of the cover body 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a locking mechanism for attaching a lid to a main body so as to be rotatable in an arc, locking the lid in a closed position, and a locking mechanism for releasing the lock. This invention relates to a lid opening/closing mechanism for an electric water heater or the like provided with a mechanism.

2. Description of the Related Art Conventionally, the opening/closing mechanism for the lid of this type of electric water heater, etc., has been designed to open and close the lid even when the lid is locked by the locking mechanism and even after the lid is unlocked by the lock release mechanism. Most of them are configured to remain in the closed position, so when opening the lid, the tabs, and the lid are unlocked and the lid is lifted. There was a risk of burns if the vapor in the container that contained the liquid came into contact with hands. Also, to eliminate the need to lift the lid, some thermos bottles have a 9th
As shown in the figure, there was a device in which the lid body was biased in the opening direction by a screw coil spring, and the lock was released by pressing the locking member, and the posture of the lid body was changed from the closed position to the opening direction. (Utility Model Application Publication No. 63-88242).

Problems to be Solved by the Invention However, in the case of such torsion coil springs, variations in the wire diameter, coil diameter, etc. tend to cause differences in the biasing force of the individual springs, and in some containers, the lid body The lid opened violently, and in some cases the lid could easily open completely. In particular, when the lid opens forcefully, the impact on the main body when the lid is fully opened makes the user feel uneasy, and is actually dangerous.

The present invention solves the above problems.The lid can be opened without touching the steam, and there is no risk of burns.Furthermore, the lid stops smoothly when the lid is finished opening, causing shock to the main body. The purpose of this invention is to easily realize a lid opening/closing device that does not cause any damage.

Means for Solving the Problems In order to achieve the above object, the present invention attaches a lid body to the main body via a hinge part so as to be rotatable in an arc, and the lid body twists in the opening direction so that the coil springs off. The mounting position of the end of the spring is variable to adjust the biasing force, and a lever that slides vertically near the hinge of the main body is biased upward. Also, a deceleration member that constitutes a part of the lid and rotates in conjunction with the lid while being in pressure contact with the end of the lever in all or part of the rotation range when the lid rotates in an arc. is provided, and the upward biasing force of the lever is variable.

According to the above-mentioned configuration, the present invention makes the mounting position of the end of the torsion coil spring, which is the source of the biasing force that rotates the lid body in an arc, variable, so that the spring can be used when the lid is closed and when the lid is closed. By increasing or decreasing the bending angle when the spring is opened, the biasing force, which is the bending moment, can be adjusted in that state, and the difference in biasing force between individual springs can be reduced.

The same effect can also be obtained by adjusting the biasing force in the arc rotation direction of the lid body by making the biasing force that biases the lever upward that presses against the deceleration member variable and increasing or decreasing the deceleration effect that the lever gives to the deceleration member. There is an effect.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 8.

In FIGS. 2 to 6, reference numeral 1 denotes a main body, which includes a container 2 containing a liquid. Reference numeral 3 denotes a lid body attached to the hinge part 4 of the main body 1 so as to be rotatable in an arc.

Reference numeral 6 denotes a locking member disposed inside the lid 3, which is biased forward by a first spring 6, and when the lid 3 is in the closed position, the claw portion 7 formed on the front part is closed to the main body 1. The claw receiver is engaged with the portion 8, and in this state, the lid 3 is locked to the main body 1. 9 has a shaft 12 that fits into a hole 11 of a pillar 10 formed inside the lid body 3, and is a lock release knob mounted so as to be rotatable in an arc around the shaft 12; The first protrusion 14 formed below the portion 13 is substantially in contact with a sloped portion 16 formed on the locking member 6 . 16 is the second spring,
The lid body 3 is biased in the opening direction.

When the external operation part 13 of the lock release knob 9 is depressed, the first protrusion 14 comes into pressure contact with the slope part 16 of the lock member 6, so that the lock member 6 moves backward against the bias of the first spring 6. Moving on.

Further, the pressing operation is continued, and after the claw part 7 of the locking member 5 is disengaged from the claw receiver part 8, when the pressing operation is stopped and the hand is released, the second spring 16 biases the lid body 3. is rotated in an arc to a predetermined position.

Reference numeral 17 denotes a locking member disposed on the lid body 3, which slides vertically on a second protrusion 18 provided on the hinge portion 4 of the main body 1, and is attached upwardly to the third spring 19. It is held between the levers 2Q and 2Q. When removing the lid 3 from the main body 1, by pushing down the lever 2° against the biasing force of the third spring 19 and lifting the lid 3 upward, the locking member 17 is attached to the main body 1. It separates from the hinge part 4.

21 is a mounting bracket fixed to the lid body 3 with screws 28;
At one end the bearing forms a section 22. - The second spring 16 and the locking member 17 are attached to the mounting bracket 21 by a shaft 23 whose bearing is fixed to a portion 22. The bearing of the mounting bracket 21 has a reducing part 24 formed near the end thereof and having a substantially arcuate tip, and is brought into pressure contact with the end part 25 of the lever 20 .

The second spring 16 is connected to the first spring when the lid body 3 is closed.
The second protrusion 18 of the main body 1 is biased through the locking member 17 with the arm 26, and the mounting bracket 21 is biased with the second arm 2A, and the lock release knob 9 is pressed down. lock member 6
The pawl receiver of the main body 1 is disengaged from the part 8, and the bearing is attached to the lid body 3 through the mounting bracket 21 with the part 22 as the center of rotation.
This is to make the arc rotate in the opening direction. At this time, attach the mounting bracket 2
A part of the connecting portion 24 formed in the lever 2o rotates in an arc in conjunction with the lid body 3 while being in pressure contact with the end portion 25 of the lever 2o. The frictional force caused by the pressure contact between the two produces a deceleration effect.

FIG. 1 shows a hole 29 in which the second arm 27 of the second spring 16 of the mounting bracket 21 is attached.The upper end of the hole 29 has a height difference, and there is a gap between the upper and lower ends. A protrusion 30 is present. Here, the second spring 1e
The biasing force in the opening direction of the lid body 3 is determined by whether the second arm portion 2T is located on the higher first upper end surface 31 or the lower second upper end surface 32. , that is, the bending moment becomes different. In this example, the first
The biasing force is weaker when it is located on the upper end surface 31 of. By making these two selections, one spring can obtain two types of biasing force, and it is possible to get closer to the desired opening speed.

In the figure, there are two types of height differences, but if this number is increased, the range of adjustment of the biasing force will be further increased.

Moreover, FIG. 7 and FIG. 8 show another embodiment,
The lever 33 is provided with a female threaded portion 34, a corresponding male threaded portion 36, and an adjustment member 37 whose lower surface 36 abuts the third spring 19. By screwing or loosening the adjusting member 37 onto the lever 33, the lower surface 36 is raised or lowered, and the compression amount tJl of the second spring 19 changes the upward biasing force on the lever 33, and the lever 33 is mounted. Even if the deceleration effect is adjusted by increasing or decreasing the pressing force of the metal fitting 21 against the deceleration part 24, the same effect can be achieved.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the biasing force itself for rotating the lid in an arc can be adjusted, or
By adjusting the pressing force between the lever and the deceleration section that produces a deceleration effect, it is possible to easily bring the lid into an ideal open state.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a perspective view showing a mounting bracket according to an embodiment of the present invention, Fig. 2 is an exploded perspective view of the same essential part, Fig. 3 is an enlarged vertical cross-sectional view of the same main part, and Fig. 4 is an exploded perspective view of the same essential part. 5 is a plan view of the same, FIG. 6 is a perspective view of the same, and FIG. 7 is an enlarged vertical sectional view of main parts showing another embodiment.
FIG. 8 is an exploded perspective view of the same essential parts, and FIG. 9 is a longitudinal sectional view showing a conventional example. 4... Hinge part, 16... Second spring, 17... Locking member, 18...
Second protrusion, 19...Third spring, 20
... Lever, 21 ... Mounting bracket, 22
...Bearing part, 23...Shaft, 24...
...Reduction part (of the mounting bracket), 25... End of the lever, 27... Second (of the second spring)
arm portion, 31...first upper end surface, 32...
...Second upper end surface, 33...Lever, 37...
...Adjustment member.

Claims (2)

[Claims] (1) The lid body is attached to the main body via the hinge part so as to be rotatable in an arc, and the lid body is biased in the opening direction by a torsion coil spring, and the mounting position of the end of the spring is variable to apply the biasing force. Adjustable lid opening/closing device for electric water heaters, etc. (2) A lever that slides in the vertical direction is provided near the hinge of the main body and is biased upward, and also constitutes a part of the lid, so that when the lid rotates in an arc, the entire rotation range or The electric water heater, etc. according to claim 1, wherein a deceleration member is disposed in a part of the lever and rotates in conjunction with the lid while being in pressure contact with the end of the lever, and the upward biasing force of the lever is variable. lid opening/closing device.