Self-returning door and garbage chamber

Abstract

The utility model provides a self-returning door and a garbage chamber. The self-returning door comprises a door plate; the lower fixing piece is fixed to the lower portion of the door plate; the rolling wheel assembly is installed on the lower fixing piece, and the rolling wheel assembly comprises a rolling ball; the lower support is located on the lower side of the door plate, the upper surface of the lower support comprises a first ramp and a second ramp which are located on the two sides of the middle position, the first ramp and the second ramp incline upwards in the direction outwards from the middle position, when force is applied in the first direction to open the self-returning door, the balls roll upwards along the first ramp, and when the force is released, the balls roll upwards along the second ramp. The ball rolls and descends along the first ramp to return to the middle position so as to realize self-closing of the self-returning door; when force is applied in the second direction opposite to the first direction to open the self-returning door, the ball rolls uphill along the second ramp, and after the force is released, the ball rolls downhill along the second ramp to return to the middle position, so that self-closing of the self-returning door is achieved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a self-returning door and a garbage room. BACKGROUND

[0002] At present, when the door is opened and closed in two directions, the ground spring is used to realize the functions of two-way, limiting and automatic return. However, the ground spring assembly has high cost, large installation difficulty, unstable hydraulic mechanical structure, easy oil leakage and failure after long use, and high failure rate and maintenance cost when used outdoors.

[0003] Therefore, for the scene that needs to be used reliably for a long time, it is necessary to design a door structure that can meet the function of the ground spring and has low failure rate and simple installation and maintenance. CONTENT OF THE INVENTION

[0004] The present disclosure provides a self-returning door and a garbage room.

[0005] According to one aspect of the present disclosure, a self-returning door is provided, comprising: a door panel; a lower fixing member fixed to the lower part of the door panel; a roller assembly installed to the lower fixing member, and the roller assembly comprising a ball; and a lower bracket located on the lower side of the door panel, the upper surface of the lower bracket comprising a first slope and a second slope located on both sides of a middle position, the first slope and the second slope being inclined upward in the direction outward from the middle position, when the self-returning door is opened in a first direction, the ball rolls uphill along the first slope, and when the force is released, the ball rolls downhill along the first slope to return to the middle position, thereby realizing the self-closing of the self-returning door; when the self-returning door is opened in a second direction opposite to the first direction, the ball rolls uphill along the second slope, and when the force is released, the ball rolls downhill along the second slope to return to the middle position, thereby realizing the self-closing of the self-returning door.

[0006] According to the self-returning door of at least one embodiment of the present disclosure, the lower bracket further comprises a first platform position and a second platform position horizontal to the ground, the first slope is located between the middle position and the first platform position, the second slope is located between the middle position and the second platform position, and after the ball rolls to the first platform position or the second platform position, the self-returning door does not automatically return and remains in the fully open state.

[0007] According to the self-returning door of at least one embodiment of the present disclosure, the ball assembly further comprises a ball containing body and a mounting block, wherein the ball containing body is used to contain the ball and the ball can rotate relative to the ball containing body, the mounting block is installed to the lower fixing member, and the ball containing part can move up and down relative to the mounting block.

[0008] According to the self-returning door of at least one embodiment of the present disclosure, the ball rolls down along the first or second slope by the gravity of the ball housing body and the ball after the force is released.

[0009] According to the self-returning door of at least one embodiment of the present disclosure, the ball housing body includes a block-shaped member for housing the ball and a rod-shaped member for being inserted into a mounting hole of the mounting block, and the rod-shaped member is movable up and down in the mounting hole.

[0010] According to the self-returning door of at least one embodiment of the present disclosure, the mounting block includes a block-shaped body and column-shaped bodies located at both sides of the block-shaped body, the lower fixing member is provided with an insertion hole in the width direction thereof, and the lower surface of the mounting block is provided with a fitting hole, in which the mounting block is inserted into the insertion hole and the rod-shaped member is sequentially inserted into the fitting hole and the mounting hole in the process of mounting the ball assembly to the lower fixing member.

[0011] According to the self-returning door of at least one embodiment of the present disclosure, the lower surface of the lower fixing member is provided with a groove extending in the width direction of the lower fixing member, the fitting hole is provided on the top wall of the groove and is used for housing the block-shaped member, and the side walls of the groove are in contact with the outer walls of the block-shaped member to prevent the block-shaped member from rotating.

[0012] According to the self-returning door of at least one embodiment of the present disclosure, the column-shaped bodies located at both sides of the block-shaped body are provided with threads, and the mounting block is fixed by nuts at both sides of the lower fixing member after the mounting block is inserted into the insertion hole.

[0013] According to the self-returning door of at least one embodiment of the present disclosure, the position of the ball is adjusted by the nuts at both sides of the lower fixing member so that the ball is positioned at the intermediate position.

[0014] According to the self-returning door of at least one embodiment of the present disclosure, a pivot shaft is further included, both ends of the pivot shaft are respectively inserted into a lower pivot hole of the lower bracket and an upper pivot hole of the lower fixing member, so that the door panel is rotatable about the pivot shaft.

[0015] According to the self-returning door of at least one embodiment of the present disclosure, the door panel is a glass door panel, and the glass door panel is fixed in the groove of the lower fixing member.

[0016] According to the self-returning door of at least one embodiment of the present disclosure, the first inclination angle of the first slope and the second inclination angle of the second slope are the same or different with respect to the horizontal direction.

[0017] According to another aspect of the present disclosure, there is provided a litter house comprising the self-return door as in any of the above. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure.

[0019] Figure 1 is a perspective view of a litter house according to an embodiment of the present disclosure.

[0020] Figure 2 is a front view of a litter house according to an embodiment of the present disclosure.

[0021] Figure 3 is a perspective view of a litter house according to an embodiment of the present disclosure. Figure 2 is a partial enlarged view of A of FIG. 1.

[0022] Figures 4 to 6 is a perspective view of a lower holder at different angles.

[0023] Figures 7 to 10 is a perspective view of a roller assembly at different angles.

[0024] Figure 11 is a perspective view of a lower holder at different angles. Figure 7 is a cross-sectional view of A-A of FIG. 1.

[0025] Figures 12 to 13 is a perspective view of a mounting block.

[0026] Figures 14 to 16 is a perspective view of a lower fixing member.

[0027] Figures 17 to 18 is a perspective view of a lower holder, a roller assembly, a pivot shaft, and a lower fixing member at different angles.

[0028] Figure 19 is a perspective view of a lower holder, a roller assembly, a pivot shaft, and a lower fixing member.

[0029] Figure 20 is a cross-sectional view of B-B of FIG. 1. Figure 19

[0030] is a perspective view of a lower holder, a roller assembly, a pivot shaft, and a lower fixing member. Figure 21

[0031] is a cross-sectional view of C-C of FIG. 1. Figure 22 Figure 21

[0032] Figures 23 to 24 ​​is a schematic view of a lower support of another embodiment of the present disclosure.

[0033] Figure 25 A partial schematic view showing a self-returning door opening state is shown. DETAILED DESCRIPTION

[0034] The present disclosure will be described in further detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are merely exemplary for explaining the related content, and are not a limitation on the present disclosure. In addition, it should be noted that only parts related to the present disclosure are shown in the drawings for ease of description.

[0035] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.

[0036] Unless otherwise specified, the exemplary embodiments / instances shown will be understood as providing exemplary features of various details that can implement the technical concepts of the present disclosure in practice. Therefore, unless otherwise specified, the features of various embodiments / instances can be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of the present disclosure.

[0037] When a component is referred to as "on" or "over" another component, "connected to" or "combined to" another component, the component can be directly on, directly connected to or directly combined to the other component, or there can be an intermediate component. However, when a component is referred to as "directly on" another component, "directly connected to" or "directly combined to" another component, there is no intermediate component. For this reason, the term "connected" can refer to a physical connection, an electrical connection, etc., with or without an intermediate component.

[0038] For descriptive purposes, the disclosure can use spatial or relative terms, such as "below," "lower," "bottom," "on," "above," "upper," "top," "side" (as in "sidewall"), etc. to describe a relationship of one element to another element as illustrated in the figures. Except where the context requires otherwise, these spatial or relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "under" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatial or relative descriptors used herein interpreted accordingly.

[0039] In most prefabricated outdoor houses, glass doors need to be used. The current mainstream door can only use the ground spring to realize the functions of bidirectional opening and closing, limiting and automatic return when bidirectionally opened and closed. However, the ground spring has several problems: high cost; difficult to install; unstable hydraulic mechanical structure. Long-term use is prone to oil leakage and failure, and the general warranty period is about one year, and the use failure rate and maintenance cost are high.

[0040] In the technical solution of the present application, a brand-new self-return door is proposed, which can realize the function of bidirectional opening and closing, has low cost, low failure rate and simple installation and maintenance, and thus realizes long-term reliable use.

[0041] Before the technical solution of the present application is described in detail, the following terms are explained.

[0042] Self-return door: After the self-return door is opened, it can automatically return to the closed state without the aid of external force, thereby realizing the function of automatic return. For a bidirectional self-return door, whether opened inwardly or outwardly, the self-return door will automatically return to the closed state.

[0043] The specific embodiments of the present application will be described below.

[0044] Figure 1 And Figure 2 A garbage room 10 installed with a self-return door is shown, which is used when recycling garbage. The user can push open the self-return door to put the garbage into the garbage room. Figure 1 And Figure 2 The embodiments of the self-return door of the present disclosure only show one application scenario, and those skilled in the art should understand that it can be applied to any other scenario, such as outdoor houses, indoor houses, commercial houses, etc.

[0045] According to one embodiment of this application, a self-returning gate is provided. Figure 3 As shown Figure 2 A magnified view of part A shown. Figure 3 As shown, the self-closing door 100 may include a lower support 110, a roller assembly 120, a pivot 130, and a lower fixing member 140. Additionally, the self-closing door 100 may include a door panel. The lower fixing member 140 is fixed to the lower part of the door panel. The roller assembly 120 is mounted to the lower fixing member 140. The lower support 110 is located on the lower side of the door panel. The lower support 110, roller assembly 120, pivot 130, and lower fixing member 140 are mounted near the side door frame.

[0046] exist Figures 1 to 3 In the illustrated embodiment, a frameless glass door is used as an example. In the case of a frameless glass door, the lower fixing member 140 can be a lower door clamp that can hold the glass. However, it should be understood that the self-closing door of this application can also be in the form of a wooden door, a steel door, an aluminum alloy door, or a framed glass door. In these forms, the lower fixing member 140 can be fixed to the door panel. For example, a groove can be made in the door body of a wooden door, a steel door, an aluminum alloy door, or the frame of a framed glass door to accommodate and fix the lower fixing member 140.

[0047] The following is a detailed description of each component included in the self-closing door 100.

[0048] In this application, the lower support 110 can be fixed to the ground or to the lower frame of the building (e.g., Figure 1 and Figure 2 (In the lower frame 210 of the house type shown). Figure 4 A three-dimensional view of the lower support from one direction is shown. Figure 5 A three-dimensional view of the lower support from another direction is shown. Figure 6 The front view of the lower part is shown.

[0049] The upper surface of the lower support 110 may include a first ramp 111 and a second ramp 112. The first ramp 111 and the second ramp 112 form a V-shape. From Figure 6 Viewed from the direction of the slope, the first ramp 111 and the second ramp 112 gradually slope upwards from the middle position of the lower support 110 towards the outer position, that is, the two sides of the lower support 110 are higher than the middle position. The first ramp 111 and the second ramp 112 can be inclined planar shapes, such as... Figure 6 As shown. The first ramp 111 and the second ramp 112 can also be concave arc surfaces. The inclination angle of the first ramp 111 and the second ramp 112 can be set to a suitable angle, such as 5-25°, so that the automatic return door can smoothly return to the closed position. In the direction from the middle position outward, the two ramps on both sides of the middle position are inclined upward.

[0050] When the self-returning door is opened in a first direction (e.g. outward opening), the ball rolls up the first ramp, and when the force is released, the ball rolls down the first ramp back to the neutral position, thus achieving self-closing of the self-returning door. When the self-returning door is opened in a second direction opposite to the first direction (e.g. inward opening), the ball rolls up the second ramp, and when the force is released, the ball rolls down the second ramp back to the neutral position, thus achieving self-closing of the self-returning door.

[0051] The lower surface of the lower bracket 110 can be shaped in any suitable shape, which is not limited in the present application. In the drawings, the lower surface of the lower bracket is planar in shape, and a lower rib 113 is provided in the middle portion. For example, when the lower bracket is installed in the lower frame as shown in Figure 1 and Figure 2 The lower rib 113 can be embedded in the groove of the lower frame 210, thus fixing the lower bracket 110 to the lower frame 210.

[0052] Figures 7 to 10 Different angle views of the roller assembly 120 are shown, Figure 11 A cross-sectional view of the roller assembly 120 is shown. Figure 7 The cross-sectional view is taken along the cross-sectional line A-A. The roller assembly 120 can include a ball 121 and a ball housing 122. The ball 121 is arranged in contact with the upper surface of the lower bracket 110. When the self-returning door 100 is opened in one direction, the ball 121 rolls along the first ramp 111, and when the self-returning door 100 is opened in another direction, the ball 121 rolls along the second ramp 112. When the self-returning door 100 is fully closed, the ball 121 is in the neutral position, and when the self-returning door 100 is fully opened, the ball 121 is in one of the two side positions. When the self-returning door 100 in the closed state is opened, a user exerts a force to push or pull the self-returning door 100, and the ball 121 rolls along the upper surface of the lower bracket 110. When the user does not exert a force on the self-returning door 100, the ball 121 will automatically roll along the upper surface of the lower bracket 110 to the neutral position, thus achieving automatic closing of the self-returning door 100.

[0053] The ball housing 122 is used to house the ball 121, and the ball 121 can rotate smoothly relative to the ball housing 122. The ball housing 122 is mounted to the mounting block and can move up and down relative to the mounting block. As an example, the ball housing 122 can wrap around a majority of the ball 121, ensuring that the ball 121 does not fall out of the ball housing 122. As an example, the majority is greater than half of the volume of the ball 121, such as two-thirds, etc. In this way, a lower portion of the ball 121 is exposed from the ball housing 122 and can roll on the upper surface of the lower bracket 110. As shown in the drawings, the ball and the ball housing are arranged in the form of a bullseye wheel.

[0054] As shown in Figures 7 to 11 The shape of the ball accommodating body 122 can be set as an inverted T shape. Figure 11 The lower part of the ball accommodating body 122 shown in FIG. 1 is a block-shaped piece 1221 and the upper part is a rod-shaped piece 1222. The block-shaped piece 1221 and the rod-shaped piece 1222 can be integrally formed or separately formed and then fixed together. The block-shaped piece 1221 is used to accommodate the balls 121. The rod-shaped piece 1222 is used to connect the mounting block 123. The mounting block 123 is provided with a mounting hole 1231 (for example, a through hole) of the mounting block. The mounting hole 1231 of the mounting block can pass through the mounting block 123 in the up-down direction. The rod-shaped piece 1222 is inserted into the mounting hole 1231 of the mounting block and can move up and down in the mounting hole 1231 of the mounting block.

[0055] It should be understood that during the opening and closing process of the self-returning door 100, the balls 121 roll on the upper surface of the lower holder 110, which causes the ball accommodating body 122 to move up and down. In turn, the rod-shaped piece 1222 moves up and down in the mounting hole 1231 of the mounting block of the mounting block 123. In this application, preferably, the ball accommodating body 122 and the balls 121 realize the contact of the balls with the first slope or the second slope by the action of gravity, so that the balls roll down along the slope. Alternatively, a spring or other elastic component can also be provided to realize the elastic action of the ball accommodating body 122 and the mounting block 123. For example, one end of the spring abuts against the mounting block 123 and the other end abuts against the ball accommodating body 122. With respect to the mounting block 123, the spring applies a downward elastic force to the ball accommodating body 122. Those skilled in the art should understand that the spring can apply a further elastic force on the basis of the action of gravity, and the specific mounting structure can be designed according to the actual situation.

[0056] Figure 12 A schematic view of one angle of the mounting block 123 (viewed from the upper part) is shown. Figure 13 A schematic view of another angle of the mounting block 123 (viewed from the lower part) is shown. The mounting block 123 can be a block-shaped body 1232, and the mounting hole 1231 of the mounting block is formed in the block-shaped body 1232. A columnar body 1233 can be provided on the block-shaped body 1232. The columnar body 1233 is provided with threads at both ends (not shown in the figure).

[0057] Figures 14 to 16A schematic view of three angles of the lower fixing member 140 is shown. The lower fixing member 140 includes a recess 1401, which can extend along the width direction of the lower fixing member 140. The recess 1401 is used to accommodate the block-shaped member 1221 of the ball accommodating body 122. For example, the upper portion of the block-shaped member 1221 can be accommodated in the recess 1401 to prevent the block-shaped member 1221 from rotating with respect to the lower fixing member 140. The recess 1401 is formed in the lower surface of the lower fixing member 140. A fitting hole 1402 is formed in the top wall of the recess 1401. After the ball accommodating body 122 is installed to the lower fixing member 140, the fitting hole 1402 is aligned with the mounting hole 1231 of the mounting block, so that the rod-shaped member 1222 can be inserted from the fitting hole 1402. In the case where the mounting block 123 is installed to the lower fixing member 140, the rod-shaped member 1222 can be inserted into the mounting hole 1231 of the mounting block 123. As an example, the block-shaped member has a polygonal cross-sectional shape, and the outer wall of the block-shaped member is in contact with the side wall of the recess to prevent the block-shaped member from rotating.

[0058] In addition, an insertion hole 1403 is formed in the width direction of the lower fixing member 140. The insertion hole 1403 penetrates the left and right sides of the lower fixing member 140. The insertion hole 1403 can have a shape matching that of the block-shaped body 1232 to accommodate the block-shaped body 1232. In the present application, the shapes of the insertion hole 1403 and the block-shaped body 1232 are preferably square.

[0059] The lower fixing member 140 shown in the drawing is a self-returning door in the form of a glass door. For this form of self-returning door, a mounting groove 1404 is provided on the lower fixing member 140. The glass door can be fitted into the groove 1404, and the glass can be fixed by the hole and screw shown in the side view.

[0060] Figures 17 to 22 A schematic view of the lower bracket 110, the roller assembly 120, the pivot shaft 130, and the lower fixing member 140 after installation is shown. Figure 20 A cross-sectional view of the B-B section of Figure 19 A cross-sectional view of the C-C section of Figure 22 A cross-sectional view of the C-C section of Figure 21 As shown in the drawing, the pivot shaft 130 is provided between the lower fixing member 140 and the lower bracket 110, so that the door installed to the lower fixing member can rotate about the pivot shaft 130. As shown in the drawing, Figure 4 A lower pivot hole 131 is formed in the lower bracket 110. As shown in the drawing, Figure 14 An upper pivot hole 132 is formed in the lower fixing member 140. The both ends of the pivot shaft 130 are inserted into the lower pivot hole 131 and the upper pivot hole 132, respectively, so that the door panel can rotate about the pivot shaft.

[0061] According to the technical solution of the present disclosure, the component structure is simple and convenient to assemble. In the assembly process, the lower fixing member 140 is fixed on the door panel (e.g. glass), the mounting block 123 is inserted into the insertion hole 1403 of the lower fixing member 140. Then the ball accommodating body 122 of the roller assembly 120 (at this time the balls 121 have been installed into the ball accommodating body 122, and the balls 121 and the ball accommodating body 122 can be an integral component out of the factory) is installed into the lower fixing member 140. In the installation process, the rod-shaped member 1222 of the ball accommodating body 122 is inserted into the mounting hole 1402 of the lower fixing member 140 and also inserted into the mounting hole 1231 of the mounting block. Then the gasket 1234 and the nut 1235 are installed on the columnar body 1233 on both sides. In addition, according to the technical solution of the present application, the fine adjustment function can also be realized. After the installed door panel is placed on the lower support 110, the nuts on both sides can be fine adjusted to fine adjust the position of the roller. Through the bidirectional screw rod (columnar body 1233) perpendicular to the slope (upper surface) of the lower support 110, the position of the ball is fine adjusted to be positioned at the bottom of the slope.

[0062] In the technical solution of the present application, through the cooperation of the roller assembly and the lower support, the limiting function and the supporting function are realized through the slope with a slight height difference.

[0063] In addition, the self-return door 100 of the present disclosure can also include an upper fixing member 150. The upper fixing member can be a standard component. For example, the upper fixing member can clamp the glass or be fixed to a wooden door panel, etc., and can be provided with a pivot shaft and can rotate around the pivot shaft. Those skilled in the art should understand that appropriate upper fixing members and connection methods with the door frame can be used, which will not be described herein.

[0064] In addition, as shown in Figure 4 The lower support 100 can also include platform positions 114 on both sides, which can include a first platform position and a second platform position. The first slope is located between the middle position and the first platform position, and the second slope is located between the middle position and the second platform. The platform position 114 is arranged to be horizontal relative to the ground and extends outward by a predetermined width. If the roller is pushed to the platform position (e.g. the door opening angle is about 90 degrees or greater than 90 degrees), the roller will be lifted to the platform position, at which time the door will not be automatically returned to the fully open state. In the case of needing to close the door, the user needs to exert force to make the roller enter the slope, and then it will be automatically closed.

[0065] Figure 23 and Figure 24The structure of the lower bracket according to another embodiment of the present disclosure is shown. The difference from the previously described lower bracket is that the inclination angles of the first slope and the second slope can be the same in the previous embodiment, but the inclination angles of the first slope and the second slope are different in this another embodiment. As shown in Figure 23 and Figure 24 the first inclination angle θ1 of the first slope 111 is smaller than the second inclination angle θ2 of the second slope 112. The inclination angle refers to the inclination angle of the slope relative to the horizontal plane (the included angle with the horizontal plane). The first inclination angle θ1 and the second inclination angle θ2 can be 5-25 degrees.

[0066] According to the lower bracket of the present embodiment, for the installation site with a slope on the ground, the direction of the lower bracket can be adjusted to reduce the imbalance caused by the ground slope. By adjusting the installation direction or position of the lower bracket, the inclination angles of the first slope and the second slope relative to the horizontal direction, for example, the inclination angles relative to the horizontal plane, can be adjusted to be the same or different. In addition, after installation, the inclination angles of the two slopes relative to the horizontal direction are different, the slope with a larger inclination angle can make the self-returning door return faster, can guide the user's opening habit, etc.

[0067] As shown in Figure 24 two lower pivot holes 131 can be provided on the lower bracket 110. The lower pivot shaft will use the lower pivot hole close to the side door frame during installation. In this way, both installation directions (i.e. left door or right door) can be considered.

[0068] The self-returning door of the present disclosure, through a simple physical structure, can make the door return by gravity, avoiding the problem that the traditional spring is easy to be damaged, greatly prolonging the service life, saving maintenance and installation costs, reducing the failure rate, etc.

[0069] In the present application, during the installation of the entire door panel, the following method can be used. The upper and lower fixing members are fixed to the door panel, and then the roller assembly is installed to the lower fixing member. The roller assembly is kept loose and not fixed in position in order to make fine adjustment. Then the upper pivot shaft and the lower pivot shaft are installed to the door frame, and the lower bracket is installed, etc. Lift the door panel, align the upper pivot shaft and the lower pivot shaft, and insert the holes of the upper and lower fixing members. Finally, fine-tune the position of the roller assembly, and fix the nuts at both ends.

[0070] During the normal opening and closing of the door, the roller rolls uphill along the slope, and after the pushing and pulling force is released (the user releases his hand), due to the action of gravity, the roller will roll downhill along the slope, realizing automatic closing and resetting. In Figure 25 the self-returning door is shown in an open state.

[0071] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or a specific number of the technical features indicated. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited.

[0072] Those skilled in the art will understand that the above-mentioned embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. Other changes or modifications can be made on the basis of the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A self-closing door, characterized in that, include: Door panel; A lower fixing member is fixed to the lower part of the door panel; A roller assembly, the roller assembly being mounted to the lower fixing member, and the roller assembly including balls; and The lower support is located on the lower side of the door panel. The upper surface of the lower support includes a first ramp and a second ramp located on both sides of the middle position. The first ramp and the second ramp slope upward in a direction outward from the middle position. When the self-closing door is opened by applying force in the first direction, the ball rolls uphill along the first ramp. When the force is released, the ball rolls downhill along the first ramp back to the middle position, thus achieving the self-closing of the self-closing door. When the self-closing door is opened by applying force in the second direction opposite to the first direction, the ball rolls uphill along the second ramp. When the force is released, the ball rolls downhill along the second ramp back to the middle position, thus achieving the self-closing of the self-closing door.

2. The self-closing door as described in claim 1, characterized in that, The lower support also includes a first platform position and a second platform position that are horizontal to the ground. The first ramp is located between the middle position and the first platform position, and the second ramp is located between the middle position and the second platform position. After the ball rolls to the first platform position or the second platform position, the self-closing door will not automatically return to its original position and will remain fully open.

3. The self-closing door as described in claim 1, characterized in that, The ball assembly further includes a ball housing and a mounting block, wherein the ball housing is used to accommodate the ball and the ball is rotatable relative to the ball housing, the mounting block is mounted to the lower fixing member, and the ball housing is movable up and down relative to the mounting block.

4. The self-closing door as described in claim 3, characterized in that, After the force is released, the ball bearings roll down the first or second ramp due to the weight of the ball bearing housing and the ball bearings.

5. The self-closing door as described in claim 3 or 4, characterized in that, The ball bearing housing includes a block-shaped component and a rod-shaped component. The block-shaped component is used to hold the ball bearing, and the rod-shaped component is used to be inserted into the mounting hole of the mounting block. The rod-shaped component is capable of moving up and down in the mounting hole.

6. The self-closing door as described in claim 5, characterized in that, The mounting block includes a block-shaped body and columnar bodies located on both sides of the block-shaped body. The lower fixing member has an insertion hole in its width direction, and the lower surface of the mounting block has an assembly hole. During the process of installing the ball assembly to the lower fixing member, the mounting block is inserted into the insertion hole, and the rod-shaped member is sequentially inserted into the assembly hole and the mounting hole.

7. The self-closing door as described in claim 6, characterized in that, The lower surface of the lower fixing member is provided with a groove, which extends along the width direction of the lower fixing member. The assembly hole is opened on the top wall of the groove and is used to accommodate the block. The side wall of the groove contacts the outer wall of the block to prevent the block from rotating.

8. The self-closing door as described in claim 6 or 7, characterized in that, The columnar bodies on both sides of the block are provided with threads. After the mounting block is inserted into the insertion hole, the mounting block is fixed on both sides of the lower fixing member by nuts.

9. The self-closing door as described in claim 8, characterized in that, The position of the ball bearing can be adjusted by using the nuts on both sides of the lower fixing member so that the ball bearing is positioned in the middle position.

10. The self-closing door as described in claim 1, characterized in that, It also includes a pivot shaft, the two ends of which are respectively inserted into the lower pivot hole of the lower support and the upper pivot hole of the lower fixing member, so that the door panel can rotate around the pivot shaft.

11. The self-closing door as described in claim 1, characterized in that, The door panel is a glass door panel, and the glass door panel is fixed in the groove of the lower fixing member.

12. The self-closing door as described in claim 1, characterized in that, The first inclination angle of the first ramp relative to the horizontal direction is the same as or different from the second inclination angle of the second ramp.

13. A garbage room, characterized in that, Includes a self-returning door as described in any one of claims 1 to 12.

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