TW202340620A - Hinge device with good operating feeling and simple structure for opening and closing an opening and closing door - Google Patents

Abstract

The present invention provides a hinge device (10) with good operating feeling and simple structure for opening and closing an opening and closing door (3). A fixed part (11) of the hinge device is installed on a main body (2). A rotating part (12) of the hinge device is installed on the opening and closing door. Furthermore, a leaf spring (16) is installed on one of the fixed part and the rotating part, and a sliding protrusion part (11d) is formed on the other of the fixed part and the rotating part. When the rotating part rotates relative to the fixed part, the sliding protrusion part slides on the leaf spring to deform the leaf spring at the same time. In this way, when the opening and closing door is opened and closed, the stiffness of the leaf spring changes and the reaction force received from the leaf spring also changes. As a result, the operating force of the opening and closing door can be changed according to the opening degree of the opening and closing door, and the operating feeling can be improved. In addition, it only needs to arrange a leaf spring on one of the fixed part and the rotating part, and a sliding protrusion part on the other one, so the structure does not become complicated.

Description

Hinge device

The present invention relates to a hinge device installed between a main body and an opening/closing door and pivotally supporting the opening/closing door relative to the main body in an openable and closable manner.

Among home appliances, there are many home appliances in which a storage chamber is formed inside a main body and the entrance of the storage chamber is opened and closed with a swing door-type opening and closing door. For example, in a clothes dryer, a storage chamber for drying clothes is formed inside the main body. After opening a swing door type opening and closing door to put clothes into the storage chamber, the opening and closing door is closed and the clothes are dried. Moreover, in oven cookers, grill cookers, etc., a storage chamber for heating food is formed inside the main body. After opening the swing door type opening and closing door to put the cooking food into the storage chamber, the opening and closing door is closed. Turn off and start heating.

The opening and closing of such an opening and closing door is usually performed manually. Therefore, a technology has been proposed that improves the operating feeling during opening and closing by combining a spring and a cam with a hinge device that attaches the opening and closing door to the main body. For example, a hinge device has been proposed in which a door is pivotally supported by a bearing portion on the main body side, in which a cam protrusion is provided on the hinge shaft of the bearing portion, and a slider in contact with the cam protrusion is provided on the main body side, and A biasing spring that biases the slider toward the cam boss. In this hinge device, as the door is opened, the slider climbs along the cam protrusion. When it is opened to a predetermined angle, the slider reaches the apex of the cam protrusion. When it is further opened, the slider is Descending along the cam protrusion, when the opening and closing door is opened to a predetermined opening, the direction of the reaction force received by the self-energizing spring is switched. Therefore, it is possible to realize an operational feeling in which the opening and closing door itself tries to close when the opening degree is small and tries to open when the opening degree becomes larger (Patent Document 1). [Prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Application Publication No. 2007-309381

[Technical problem to be solved by the invention]

However, in the proposed conventional hinge device, there is a problem that the structure becomes complicated because a cam boss, a slider, and a biasing spring are required.

The present invention was made in order to solve the above-mentioned problems of the prior art, and its object is to provide a hinge device that can open and close an opening and closing door with good operating feeling and has a simple structure. [Technical means]

In order to solve the above-mentioned problems, the hinge device of the present invention adopts the following structure. Right now, A hinge device installed on one end of a door and a main body and supporting the door shaft so as to be openable and closable relative to the main body, characterized by: The aforementioned hinge device has: a fixed part, which is installed on the aforementioned main body; and a rotating part, which is installed on one end of the aforementioned opening and closing door and is rotatably supported on the aforementioned fixed part, A leaf spring is installed on either the fixed part or the rotating part, A sliding convex portion is formed on either the fixed portion or the rotating portion, and the sliding convex portion slides on the leaf spring and deforms the leaf spring as the rotating portion is rotated relative to the fixed portion.

In the hinge device of the present invention described above, when the opening and closing door is opened and closed, the rotating part attached to the opening and closing door rotates relative to the fixed part attached to the main body. In addition, as the rotating portion rotates, the sliding convex portion slides on the leaf spring and deforms the leaf spring.

In this way, force is required to deform the leaf spring when opening and closing the door. In addition, when the opening and closing door is opened and closed, the sliding protrusion slides on the leaf spring, so the stiffness of the leaf spring changes and the reaction force received from the leaf spring also changes. As a result, the operating force for opening and closing the opening and closing door can be changed according to the opening degree of the opening and closing door, and the operating feeling can be improved. In addition, it is enough to provide a leaf spring in one of the fixed part or the rotating part, and to provide a sliding convex part in any other of the fixed part or the rotating part, so the structure of the hinge device does not become complicated. .

Furthermore, in the above-described hinge device of the present invention, the width of the leaf spring may be changed in the direction in which the sliding protrusion slides within the range of the leaf spring in which the sliding protrusion slides.

In this way, the reaction force of the leaf spring can be changed according to the opening and closing of the opening and closing door, so the operating feeling of the opening and closing door can be easily improved.

Furthermore, in the above-mentioned hinge device of the present invention, the shape of the leaf spring may be formed in a shape such that the rotation angle of the rotating part relative to the fixed part corresponds to at least one of the fully closed state or the fully open state of the opening and closing door. At the rotation angle, the leaf spring does not come into contact with the sliding protrusion or is deformed by the sliding protrusion.

In this way, it is possible to prevent the leaf spring from remaining in a deformed state for a long time and causing the reaction force of the leaf spring to become small.

FIG. 1 is an explanatory diagram of the clothes dryer 1 equipped with the hinge device 10 of this embodiment. The clothes dryer 1 includes a cube-shaped main body 2 in which a large input port 2a is opened on the front surface, and an opening and closing door 3 that opens and closes the input port 2a. The opening and closing door 3 is attached to the main body 2 via a hinge device 10 at a position on the left side when viewed from the front. Therefore, when the handle 3a formed on the right side of the opening and closing door 3 is pulled forward, the opening and closing door 3 rotates around the position supported by the hinge device 10. As a result, clothes can be put in from the insertion port 2a.

FIG. 2 is an exploded assembly view showing a structure in which the opening and closing door 3 is mounted on the main body 2 via the hinge device 10 . FIG. 2 shows the clothes dryer 1 viewed from the direction in front of the hinge device 10 (the direction indicated by arrow A in FIG. 1 ). The hinge device 10 includes a fixing part 11 attached to the main body 2 of the clothes dryer 1 and a rotating part 12 attached to the opening and closing door 3 . The fixing part 11 is attached to the position adjacent to the insertion port 2a of the main body 2. Furthermore, the rotating part 12 forms a part of the annular door frame 3b, and the dome-shaped door cover 3c is assembled to the annular door frame 3b, thereby forming the opening and closing door 3. Furthermore, the opening and closing door 3 is attached to the main body 2 by attaching the rotating part 12 on the opening and closing door 3 side to the fixed part 11 of the main body 2 .

FIG. 3 is an exploded assembly diagram showing the detailed structure of the hinge device 10 of this embodiment. As shown in the figure, the fixed part 11 is a single member, but the rotating part 12 is composed of a combination of the door-side base 13 that forms a part of the door frame 3b, the hinge shaft 14, the fixed plate 15, the leaf spring 16, etc. .

The fixed portion 11 is made of a hard resin or metal material and has a shape in which support portions 11 b for supporting the door-side base 13 of the rotating portion 12 protrude from two locations of the main-side base 11 a attached to the main body 2 . A through hole 11 c through which the hinge shaft 14 is inserted is formed at the front end of each support portion 11 b. Furthermore, each support part 11b is formed with a protrusion 11d parallel to the through hole 11c. In addition, the protrusion 11d of this embodiment corresponds to the "sliding convex part" of this invention.

The door-side base 13 is formed by injection molding of hard resin. Through-holes 13a for inserting the support portions 11b of the fixing portion 11 are opened at two locations on the bottom side, and are formed on the upper portions of each through-holes 13a. There is a storage chamber 13b for accommodating the inserted support portion 11b. Moreover, the hinge shaft 14 is fixed to the door side base 13 in the state which penetrated the two storage chambers 13b. Therefore, by inserting the hinge shaft 14 into the through hole 11c of the support portion 11b with the support portion 11b of the fixed portion 11 accommodated in the storage chamber 13b, the door-side base 13 is rotatably attached to the fixed portion. Department 11.

A recessed portion 13d is formed on the upper surface of the door-side base 13 between the two storage chambers 13b. When the hinge shaft 14 is assembled, the hinge shaft 14 passes through the recessed portion 13d. Furthermore, an attachment portion 13c for attaching the leaf spring 16 is formed on the upper surface of the door-side base 13 at a position adjacent to each storage chamber 13b.

The fixing plate 15 is a metal plate member having a rectangular main body 15a and a hanging portion 15b extending vertically downward from the center of one long side of the main body 15a. Mounting pieces 15c are formed at both ends of the hanging portion 15b by being bent inward, and each mounting piece 15c is formed with a through hole 15d for the hinge shaft 14 to pass through. In addition, when assembling the hinge shaft 14 to the door side base 13, the hanging portion 15b of the fixed plate 15 is inserted into the recessed portion 13d of the door side base 13 in advance and the hinge shaft 14 is inserted into the through hole 15d. Assembly below. In this way, the fixing plate 15 can be assembled to the door side base 13 in a rotatable state about the hinge shaft 14 . Furthermore, the fixing plate 15 can be fixed to the door side base 13 by inserting the mounting bolt 17 into the mounting hole 15e formed in the main body 15a. Furthermore, a rectangular-shaped through window 15f is formed in the main body portion 15a of the fixed plate 15 at a position overlapping the mounting portion 13c of the door-side base 13 when the fixed plate 15 is fixed to the door-side base 13 with the mounting bolts 17. .

The leaf spring 16 is formed by bending a strip-shaped spring member. FIG. 4 is an explanatory diagram showing the detailed shape of the leaf spring 16. As shown in the figure, in the leaf spring 16, a sliding part 16b is formed on one end side of the spring body 16a of a constant width, and a mounting part 16c is formed on the other end side. The sliding portion 16b is formed in a shape in which the spring body 16a is formed in a tongue shape, and the base portion of the tongue shape is bent obliquely downward and is slightly bent upward in the middle of the tongue shape. In addition, the sliding portion 16b may be formed by gently bending the entire tongue shape downward into a convex shape. Furthermore, the mounting portion 16c is formed in a shape in which the other end side of the spring body 16a is bent downward, and then the bent front end is bent horizontally.

The leaf spring 16 is attached to the door side base 13 in the following manner. First, in a state where the fixing plate 15 is not fixed with the mounting bolts 17 , the fixing plate 15 is rotated about the hinge shaft 14 , whereby the main body 15 a is separated from the door side base 13 . In this state, after inserting the mounting portion 16c of the leaf spring 16 into the through window 15f of the fixing plate 15, the fixing plate 15 is rotated in the opposite direction, and the fixing plate 15 is fixed to the door side base 13 using the mounting bolts 17. Then, the mounting portion 16c of the leaf spring 16 is sandwiched between the mounting portion 13c of the door-side base 13 and the main body portion 15a of the fixed plate 15, and the leaf spring 16 is fixed to the door-side base at the portion of the mounting portion 16c. 13.

FIG. 5 is a cross-sectional view of the hinge device 10 taken along a cross-section through the center of the leaf spring 16 . As shown in the figure, the leaf spring 16 is mounted by sandwiching the mounting portion 16c between the mounting portion 13c of the door-side base 13 and the fixing plate 15 . Moreover, the door side base 13 is rotatably attached to the fixing part 11 via the hinge shaft 14.

In FIG. 5 , the opening and closing door 3 is in a closed state, but in this state, the protrusion 11 d formed on the fixed part 11 and the sliding part 16 b of the leaf spring 16 are separated. Therefore, when the opening and closing door 3 is opened, no reaction force is received from the leaf spring 16, and the opening and closing door 3 can be opened and closed with a relatively light force. Furthermore, since the leaf spring 16 does not deform, the force of the leaf spring 16 does not weaken even if a long time passes. However, when the door 3 is opened, the rotating part 12 rotates in the direction indicated by the hatched arrow in the figure, and the sliding part 16b of the leaf spring 16 approaches the protrusion 11d of the fixed part 11. When the opening degree of the opening and closing door 3 reaches a predetermined opening degree, the sliding portion 16 b comes into contact with the protrusion 11 d to deform the leaf spring 16 . As a result, a reaction force from the leaf spring 16 is applied to the opening and closing door 3 .

FIG. 6 is an explanatory diagram showing how the leaf spring 16 deforms as the opening and closing door 3 is opened. (a) of FIG. 6 shows a state immediately after the sliding portion 16b of the leaf spring 16 comes into contact with the protrusion 11d of the fixed portion 11. When the opening and closing door 3 is further opened from this state, the leaf spring 16 deforms, and the reaction force generated by the deformation is applied to the opening and closing door 3 . In addition, as described above using FIG. 4 , the spring body 16 a of the leaf spring 16 is formed to have a constant width, and the sliding portion 16 b is formed into a tongue shape. The width of the leaf spring 16 becomes smaller toward the front end. Therefore, compared with the spring main body 16a, the portion of the sliding portion 16b becomes more easily deformed toward the front end. As a result, the sliding part 16b is mainly deformed within the angular range for a period of time after the plate spring 16 comes into contact with the protrusion 11d. Next, when the opening/closing door 3 is further opened, the state shown in FIG. 6(b) is achieved.

Comparing (a) and (b) of FIG. 6 , it can be seen that as the opening and closing door 3 is opened, the protrusion 11 d of the fixed part 11 pushes up the leaf spring 16 . In addition, the position where the protrusion 11d pushes up the leaf spring 16 moves as the opening and closing door 3 is opened. That is, as the door 3 is opened, the protrusion 11d of the fixed part 11 slides on the sliding part 16b of the leaf spring 16, and at the same time, the leaf spring 16 is pushed up. In addition, the position where the protrusion 11d pushes up the leaf spring 16 approaches the spring body 16a of the leaf spring 16 as the door 3 is opened. In the state shown in FIG. 6( b ), the protrusion 11 d pushes up the vicinity of the base of the sliding part 16 b, but does not apply force to the front end side of the sliding part 16 b. Therefore, what is pushed up and deformed by the protrusion 11d becomes the spring main body 16a of the leaf spring 16. In (b) of FIG. 6 , the fact that the leaf spring 16 is separated from the fixed plate 15 means that the leaf spring 16 itself is deformed. When the plate spring 16 itself is deformed in this way, the reaction force generated by the deformation becomes larger than when the sliding portion 16 b of the plate spring 16 is deformed.

(c) of FIG. 6 shows a case in which the opening and closing door 3 is further opened to a fully open state. When the opening and closing door 3 is brought into the fully open state, the protrusion 11d passes over the sliding part 16b, and the protrusion 11d does not deform the leaf spring 16. In addition, in FIG. 6( c ), it is shown that a slight gap is formed between the protrusion 11 d and the spring main body 16 a of the leaf spring 16 . However, the protrusion 11 d and the spring main body 16 a may be slightly contacted. In this state, the spring body 16a does not deform, so no reaction force acts on the opening and closing door 3. However, if the door 3 is further opened, the protrusion 11d deforms the spring body 16a, and the reaction force acts on the opening and closing door. 3.

FIG. 7 is an explanatory diagram showing how the reaction force of the leaf spring 16 changes as the opening and closing door 3 is opened. In the section from the fully closed state to the opening degree θ1, the protrusion 11d does not contact the sliding portion 16b of the leaf spring 16, so no reaction force of the leaf spring 16 is generated. However, when the opening and closing door 3 is opened to the opening degree θ1, The protrusion 11d comes into contact with the sliding part 16b and pushes up the leaf spring 16. At this time, the position where the protrusion 11d abuts the sliding portion 16b is a narrow portion of the front end side of the sliding portion 16b. Since the stiffness of the leaf spring 16 is low, the reaction force generated by the deformation is small, but then the When the door 3 is opened, the protrusion 11d moves in the direction of the spring body 16a, so the rigidity of the leaf spring 16 becomes high. As a result, the reaction force generated by the leaf spring 16 gradually becomes larger.

Furthermore, when the opening and closing door 3 is opened to a certain opening degree, the spring body 16a is deformed, and in this state, the protrusion 11d moves in the direction of the mounting portion 16c. Therefore, the length of the deformed portion of the leaf spring 16 (that is, the portion from the contact position of the protrusion 11 d to the mounting portion 16 c ) becomes shorter, and the deformation amount of the leaf spring 16 becomes larger, so the reaction force of the leaf spring 16 further increases. Next, when the opening/closing door 3 is fully opened, the protrusion 11d no longer pushes up the leaf spring 16, so the reaction force of the leaf spring 16 decreases sharply and becomes zero. Furthermore, when the opening and closing door 3 is closed from the fully open state, the reaction force of the leaf spring 16 changes in the opposite direction.

Thus, in the hinge device 10 of this embodiment, as the door 3 is opened and closed, the protrusion 11d of the fixed part 11 slides on the sliding part 16b of the leaf spring 16 while pushing up the leaf spring 16. Therefore, by changing the width of the leaf spring 16 within the sliding range of the protrusion 11d, the stiffness of the leaf spring 16 can be changed. As a result, as illustrated in FIG. 7 , the reaction force of the leaf spring 16 can be changed in a complex manner with respect to the opening of the opening and closing door 3 , so the operating feeling of the opening and closing door 3 can be improved. In addition, since the plate spring 16 is deformed only by sliding the protrusion 11d on the sliding portion 16b of the plate spring 16, the operating feeling can be improved with an extremely simple structure.

In addition, it is considered that the time that the opening and closing door 3 is in the fully closed state is the longest, and the time in the fully open state is second. However, in the hinge device 10 of this embodiment, the protrusions are formed near the fully closed and fully open states of the opening and closing door 3. 11d is formed into a shape which does not deform the leaf spring 16. Therefore, the time during which the leaf spring 16 is deformed can be shortened, and therefore it is possible to prevent the force of the leaf spring 16 from weakening and thus causing the operating feeling of the opening and closing door 3 to deteriorate.

In addition, in the present embodiment described above, the sliding portion 16b of the leaf spring 16 has the aforementioned shape as described using FIG. 4, but the shape of the sliding portion 16b may be other shapes. FIG. 8 shows a three-dimensional view of a leaf spring 16 having a differently shaped sliding portion 16 b. In the leaf spring 16 illustrated in FIG. 8 , one end side of the spring body 16 a of a constant width is formed into a tongue shape, and the base portion of the tongue shape is bent downward to form the sliding portion 16 b.

FIG. 9 is a cross-sectional view of another aspect of the hinge device 10 provided with the leaf spring 16 illustrated in FIG. 8 . In another aspect of the hinge device 10, the leaf spring 16 is sandwiched between the mounting portion 13c of the door-side base 13 and the fixing plate 15 via the mounting portion 16c. In FIG. 9 , the opening and closing door 3 is in a closed state. However, when the opening and closing door 3 is closed, in another aspect of the hinge device 10 , the protrusion 11 d of the fixed part 11 and the sliding part of the leaf spring 16 are also used. 16b separated. Therefore, the leaf spring 16 does not deform, and the force of the leaf spring 16 does not weaken even if a long time passes. However, when the opening and closing door 3 is opened, the rotating portion 12 rotates in the direction indicated by the hatched arrow in the figure. When the opening of the opening and closing door 3 reaches a predetermined opening, the sliding portion 16b comes into contact with the protrusion 11d. The leaf spring 16 is deformed, and the reaction force of the leaf spring 16 affects the opening and closing of the opening and closing door 3 .

FIG. 10 is an explanatory diagram showing a state in which the leaf spring 16 deforms as the opening and closing door 3 is opened in the hinge device 10 in another aspect. (a) of FIG. 10 shows a state immediately after the sliding portion 16b of the leaf spring 16 comes into contact with the protrusion 11d of the fixed portion 11. Comparing Fig. 6 (a) and Fig. 10 (a), it can be seen that in another aspect of the hinge device 10, compared with the hinge device 10 of the present embodiment described above, the protrusion 11d has a greater opening and closing angle of the door 3. The smaller angle abuts the sliding portion 16b. If the shape of the sliding portion 16 b of the leaf spring 16 is changed, the opening degree at which the reaction force of the leaf spring 16 starts to affect the opening and closing of the opening and closing door 3 can be adjusted.

When the opening and closing door 3 is further opened after the protrusion 11d comes into contact with the sliding part 16b, the protrusion 11d slides on the sliding part 16b toward the spring body 16a while pushing up the leaf spring 16. (b) of FIG. 10 shows a state in which the protrusion 11d pushes up the leaf spring 16 and slides on the sliding part 16b. Furthermore, as shown by the thick arrow in the figure, the reaction force of the leaf spring 16 is directed toward the hinge axis 14 . Therefore, in the hinge device 10 of another aspect, the reaction force of the leaf spring 16 acts as a braking force when opening and closing the opening and closing door 3 . Furthermore, when the opening and closing door 3 is in the fully open state, as illustrated in FIG. 10( c ), the protrusion 11 d is sandwiched between the fixed plate 15 and the sliding portion 16 b and is held by the reaction force of the leaf spring 16 . condition.

Thus, in the hinge device 10 of another aspect, when the door 3 is opened and the leaf spring 16 begins to deform, the opening and closing of the door 3 is braked by the reaction force of the leaf spring 16 until it reaches the fully open state. status. Therefore, the opening and closing door 3 can be held at the opening degree desired by the user in advance. In addition, even if the place where the clothes dryer 1 is installed is tilted, it is possible to prevent the half-open door 3 from opening or closing by itself due to its own weight.

Several modifications can be considered for the hinge device 10 of another aspect of the present embodiment described above. In the following, the above-mentioned modified example will be described focusing on differences from this embodiment and another aspect.

In the hinge device 10 of another aspect of the present embodiment described above, the case where the portion of the sliding portion 16 b of the leaf spring 16 on which the protrusion 11 d slides is formed in a flat shape will be described. However, as shown in FIG. 11( a ), a smaller convex portion 16 d may be formed on the surface of the sliding portion 16 b of the leaf spring 16 on which the protrusion 11 d slides. Here, the convex portion 16d may have a rib shape. In this way, when the protrusion 11d passes over the convex portion 16d, the deformation of the leaf spring 16 becomes larger, so that when opening and closing the opening and closing door 3, it is possible to achieve an operating feeling in which there is a small resistance at an arbitrary opening degree. Moreover, when forming the convex part 16d, as shown in FIG.11(b), the size of the convex part 16d may be made different. In this way, it is possible to achieve an operational feeling in which resistance of any size exists at any opening degree.

Furthermore, in the hinge device 10 of another aspect of the present embodiment described above, the case where the protrusion 11d is formed on the fixed part 11 and the leaf spring 16 is attached to the rotating part 12 will be described. However, the protrusion 11d may be formed on the rotating part 12, and the leaf spring 16 may be attached to the fixed part 11.

Furthermore, in the hinge device 10 of another aspect of the present embodiment described above, a case in which the sliding portion 16 b is formed by forming one end side of the leaf spring 16 into a tongue shape will be described. However, if the stiffness of the spring body 16a of the leaf spring 16 can be changed, the tongue shape does not necessarily have to be the same. For example, the width of the leaf spring 16 may be temporarily narrowed and then widened, or the thickness of the leaf spring 16 may be changed (for example, the thickness of the leaf spring 16 may be made thinner toward the front end). The sliding portion 16b is formed.

The hinge device 10 according to this embodiment, another aspect, and a modified example has been described above. However, the present invention is not limited to the above-described embodiments, and can be implemented in various aspects without departing from the gist of the invention.

1: Clothes dryer 2:Subject 2a:Input port 3:Open and close the door 3a: handle 3b:Door frame 3c: door cover 10:Hinge device 11: Fixed part 11a: Main side abutment 11b: Support part 11c:Through hole 11d:Protrusion 12:Rotating part 13: Door side abutment 13a: Through port 13b: Storage room 13c: Installation Department 13d: concave part 14:Hinge axis 15:Fixed plate 15a: Main part 15b: hanging part 15c: Installation piece 15d:Through hole 15e:Mounting hole 15f: Through window 16:leaf spring 16a:Spring body 16b:Sliding part 16c: Installation Department 16d:convex part 17: Installation bolts

[Fig. 1] is a perspective view showing the appearance of the clothes dryer 1 equipped with the hinge device 10 of this embodiment. [Fig. 2] is an exploded assembly view showing the structure in which the opening and closing door 3 is attached to the main body 2 by the hinge device 10. [Fig. 3] is an exploded assembly diagram showing the detailed structure of the hinge device 10 of this embodiment. [Fig. 4] is an explanatory diagram showing the detailed shape of the leaf spring 16. [Fig. 5] is a cross-sectional view of the hinge device 10 taken along a cross-section passing through the center of the leaf spring 16. [Fig. 6] is an explanatory diagram showing how the leaf spring 16 deforms as the opening and closing door 3 is opened and closed. [Fig. 7] is an explanatory diagram showing how the reaction force of the leaf spring 16 changes as the opening and closing door 3 is opened and closed. [Fig. 8] is an explanatory diagram showing the detailed shape of the leaf spring 16 in another aspect. [Fig. 9] is a cross-sectional view of the hinge device 10 provided with another aspect of the leaf spring 16. [Fig. 10] is an explanatory diagram showing a state in which the leaf spring 16 deforms as the opening and closing door 3 opens and closes in the hinge device 10 in another aspect. [Fig. 11] is an explanatory diagram illustrating the leaf spring 16 having the convex portion 16d in the sliding portion 16b.

10:Hinge device

11: Fixed part

11d:Protrusion

12:Rotating part

13: Door side abutment

13c: Installation Department

14:Hinge axis

15:Fixed plate

16:leaf spring

16b:Sliding part

Claims (3)

A hinge device that is installed on one end of a door and a main body and supports the shaft of the door so that it can be opened and closed relative to the main body, and is characterized by: This hinge device has: a fixing part installed on the main body; and a rotating part, which is installed on one end of the opening and closing door and is rotatably supported on the fixed part, A leaf spring is installed on either the fixed part or the rotating part, A sliding convex portion is formed on either the fixed portion or the rotating portion, and the sliding convex portion slides on the leaf spring and deforms the leaf spring as the rotating portion is rotated relative to the fixed portion. The hinge device according to claim 1, wherein, The leaf spring is at least within the sliding range of the sliding protrusion, and the width of the leaf spring changes toward the sliding direction of the sliding protrusion. The hinge device according to claim 1 or 2, wherein, The shape of the leaf spring is formed in a shape such that when the rotation angle of the rotating part relative to the fixed part corresponds to at least one of the fully closed state or the fully open state of the opening and closing door, the leaf spring does not interact with the sliding protrusion. contact or not be deformed by the sliding protrusion.