A hinge for embedded refrigerator and a design method of a guide groove in the hinge

Abstract

The application discloses a hinge for an embedded refrigerator, which comprises a hinge shaft and a guide groove matched with each other; the hinge shaft is arranged at the top front side of a refrigerator body, and the guide groove is arranged at the top end of a refrigerator door body; the hinge shaft extends downward along the vertical direction; the lower end of the hinge shaft is inserted into the corresponding guide groove; during the process that the refrigerator door body is changed from the closed state to the open state by 90 degrees, the guide groove and the hinge shaft are guided to move the outer side edge of the front end surface of the refrigerator door body inward along the side surface of the cabinet; during the process that the refrigerator door body is continuously opened after being opened by 90 degrees, the guide groove and the hinge shaft are guided to make the refrigerator door body make the circular motion around the side edge of the front end surface of the cabinet. The application further discloses a design method of the guide groove in the hinge for the embedded refrigerator. The guide groove designed by the design method is matched with the hinge shaft, so that the refrigerator door body will not be rubbed and collided with the side surface of the corresponding cabinet during the opening process.

Description

A design method for a hinge for an embedded refrigerator and a guide groove in the hinge. Technical Field

[0001] This invention belongs to the field of refrigerator technology, specifically relating to a hinge for an embedded refrigerator and a design method for a guide groove in the hinge. Background Technology

[0002] Currently, after a built-in refrigerator is installed, the side of the door is flush with the side of the corresponding cabinet, and the front of the door is flush with the front of the cabinet. During opening and closing, the door is prone to friction and collision with the corresponding cabinet side, thus affecting the lifespan of the refrigerator door.

[0003] Based on the above problems, this application proposes an embedded refrigerator hinge, which, through the structural design of the hinge guide groove, prevents the refrigerator door from rubbing and colliding with the corresponding side of the cabinet during the opening process. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hinge for an embedded refrigerator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hinge for an embedded refrigerator includes a mating hinge shaft and a guide groove;

[0007] The hinge shaft is fixedly installed on the top front side of the refrigerator body, and the guide groove is installed at the top of the refrigerator door.

[0008] The hinge axis extends downward in the vertical direction;

[0009] The lower end of the hinge shaft is inserted into the corresponding guide groove;

[0010] During the process of the refrigerator door opening from the closed state to 90°, the guide groove and the hinge shaft guide the outer edge of the front face of the refrigerator door to move inward along the side of the cabinet.

[0011] As the refrigerator door continues to open from 90°, the guide groove and hinge shaft work together to make the refrigerator door move in a circular motion around the side of the front face of the cabinet.

[0012] Preferably, a mounting plate is fixedly installed at the top of the hinge shaft, and the mounting plate is fixedly installed at the top of the refrigerator body.

[0013] Preferably, two sets of matching hinge shafts and guide grooves are provided.

[0014] The present invention also provides a design method for a guide groove in a hinge for an embedded refrigerator.

[0015] A design method for a guide groove in a hinge for an embedded refrigerator includes the following steps:

[0016] Step 1: Determine the movement process of the refrigerator door;

[0017] Using the top view of the refrigerator as a reference, when the refrigerator door is closed, define two points on the side of the refrigerator door: the point closer to the refrigerator body is point A, and the point farther away from the refrigerator body is point B. The point on the side of the cabinet corresponding to point A is point A1, and the point on the side of the cabinet corresponding to point B is point B1.

[0018] During the process of the refrigerator door moving from a closed state to a 90° open state, point B moves inward along the straight line B1A1, and point A also moves in a straight line. The straight line on which point A moves is defined as the reference line L, and the angle between the reference line L and the refrigerator body is denoted as α. The angle between the side of the refrigerator door and the side of the refrigerator body is defined as the opening angle θ.

[0019] As the refrigerator door continues to open from 90°, it makes a circular motion around the vertical line where point B1 is located, and the radius AB1 of the circular motion corresponding to point A is the largest.

[0020] Step 2: Determine the angle α between the reference line L and the refrigerator body;

[0021] The distance between the drawer boundary and the inner side panel of the refrigerator is δ, and the thickness of the refrigerator door is d;

[0022] To ensure that the drawer can be freely extended after the refrigerator door is opened, the maximum radius AB1 of the circular motion is the distance δ between the drawer boundary and the inner side panel of the refrigerator.

[0023] With the refrigerator door open to 90°:

[0024] δ=AB1 (1)

[0025] d=AB=A1B1=A1B+BB1 (2)

[0026] at the same time,

[0027] α=∠A1AB (3)

[0028] Solving for α using trigonometric relationships, we obtain the relationship between α, δ, and d as follows:

[0029]

[0030] Step 3: Determine the equation of motion of the hinge axis during the process of the refrigerator door opening 90° from closed;

[0031] The distance from the hinge axis centerline to the refrigerator body is 'a', and the distance from the hinge axis to the cabinet body is 'b'. The calculation process for the hinge axis's motion trajectory equation during the refrigerator door's process of opening 90° from closed is as follows:

[0032] Determine the coordinate system for motion: take point B of the refrigerator door as the origin, the straight line BA as the Y-axis, and the straight line perpendicular to BA as the X-axis;

[0033] The position of the hinge axis centerline is point O;

[0034] Draw a straight line perpendicular to the front face of the refrigerator body from point O, with the foot of the perpendicular at point F; draw a straight line perpendicular to the side face of the cabinet from point O, with the foot of the perpendicular at point G; the intersection of FO and the Y-axis is J, and the intersection of GO and the Y-axis is M.

[0035] Draw a straight line perpendicular to the Y-axis from point O, with the foot of the perpendicular at point I;

[0036] but:

[0037] a=FO=A1G=FJ+JO (5)

[0038] b = GO = A1F = GM + MO (6)

[0039] The coordinates (x, y) of point O in the moving coordinate system are solved using trigonometric functions, where...

[0040]

[0041]

[0042] The coordinates (x, y) of point O in the motion coordinate system are the equation of the motion trajectory of the hinge axis during the process of the refrigerator door opening 90° from closed.

[0043] Step 3: Draw the motion trajectory curve at the top of the refrigerator door using the motion trajectory equation obtained in Step 2. This motion trajectory curve is the first segment of the center line curve of the guide groove during the process of the refrigerator door opening 90° from closing.

[0044] Step 4: With the refrigerator door open to 90°, draw an arc curve along the closing direction, with the distance from point O to point B1 as the radius and the end point of the first segment of the center line curve of the guide groove as the starting point. The included angle of the arc curve is β. This arc curve is the second segment of the center line curve of the guide groove during the process of the refrigerator door opening from 90° to the maximum opening angle.

[0045] in,

[0046]

[0047] In equation (9), γ is the maximum door opening angle;

[0048] Step 5: Determine the width of the guide groove based on the diameter of the hinge shaft;

[0049] Step 6: Determine the outline of the guide groove based on the guide groove centerline curve obtained in Steps 3 and 4 and the guide groove width obtained in Step 5.

[0050] Preferably, in step 2, the process of solving α using trigonometric function relationships to obtain equation (4) is as follows:

[0051] With the refrigerator door open to 90°, in triangle ABB1,

[0052]

[0053]

[0054]

[0055] In △ABA1,

[0056] A1B=AB×tan∠A1AB=d×tanα(4.4)

[0057] therefore,

[0058]

[0059] Preferably, in step 3, the process of solving for the coordinates (x, y) of point O in the moving coordinate system using trigonometric functions is as follows:

[0060] During the process of the refrigerator door opening 90° from closed, in △ABA1,

[0061]

[0062] therefore,

[0063]

[0064] but,

[0065]

[0066] In the background music (BGM),

[0067]

[0068] but,

[0069]

[0070] In △MIO,

[0071]

[0072] The x-coordinate of point O in the moving coordinate system is x = 10;

[0073] The ordinate of point O in the moving coordinate system

[0074]

[0075] The beneficial effects of this invention are:

[0076] The guide groove designed by the present invention, after cooperating with the hinge shaft, allows the outer edge of the front face of the refrigerator door to move inward along the side of the cabinet during the process of the refrigerator door opening from the closed state to 90°. During the process of the refrigerator door continuing to open from 90°, the refrigerator door moves in a circular motion around the side of the front face of the cabinet, so that the refrigerator door will not rub or collide with the corresponding side of the cabinet during the opening process. Attached Figure Description

[0077] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0078] Figure 1 is a structural schematic diagram of the hinge for the embedded refrigerator of the present invention;

[0079] Figure 2 is a schematic diagram of the refrigerator door in the closed state;

[0080] Figure 3 is a schematic diagram of the refrigerator door from the closed state to the state of opening 90°.

[0081] Figure 4 is a schematic diagram of the refrigerator door when it is opened to 90°.

[0082] Figure 5 is a schematic diagram of the refrigerator door opening from 90° and continuing to open;

[0083] Figure 6 is a schematic diagram showing the position of the refrigerator door relative to the drawer boundary when the refrigerator door is opened 90°.

[0084] Figure 7 is a schematic diagram of the moving coordinate system;

[0085] Figure 8 is a schematic diagram of the outline of the first guide groove and the second guide groove in Embodiment 3;

[0086] in:

[0087] 1-Hinge shaft, 2-Guide groove, 3-Mounting plate. Detailed Implementation

[0088] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0089] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0090] In this invention, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements of this invention, and do not specifically refer to any component or element in this invention, and should not be construed as limiting this invention.

[0091] In this invention, terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0092] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0093] Example 1:

[0094] A hinge for an embedded refrigerator includes a mating hinge shaft 1 and a guide groove 2.

[0095] As shown in Figure 1, the hinge shaft is fixedly installed on the top front side of the refrigerator body, and the guide groove 2 is installed at the top of the refrigerator door.

[0096] The hinge shaft 1 extends downward in the vertical direction;

[0097] The lower end of the hinge shaft 1 is inserted into the corresponding guide groove 2; the hinge shaft 1 and the guide groove 2 can move relative to each other;

[0098] During the process of the refrigerator door opening from the closed state to 90°, the guide groove 2 and the hinge shaft 1 guide the outer edge of the front face of the refrigerator door to move inward along the side of the cabinet.

[0099] As the refrigerator door continues to open from 90°, the guide groove 2 and the hinge shaft 1 guide each other, causing the refrigerator door to move in a circular motion around the side of the front face of the cabinet.

[0100] Preferably, a mounting plate 3 is fixedly installed at the top of the hinge shaft 1, and the mounting plate 3 is fixedly installed at the top of the refrigerator body.

[0101] Preferably, two sets of matching hinge shaft 1 and guide groove 2 are provided.

[0102] Example 2:

[0103] The design method of the guide groove in the hinge of the embedded refrigerator in Example 1 includes the following steps:

[0104] Step 1: Determine the movement process of the refrigerator door;

[0105] Using the top view of the refrigerator as a reference, when the refrigerator door is in a closed state, as shown in Figure 2, define two points on the side of the refrigerator door: the point closer to the refrigerator body is point A, and the point farther away from the refrigerator body is point B. The point on the side of the cabinet corresponding to point A is point A1, and the point on the side of the cabinet corresponding to point B is point B1.

[0106] As shown in Figure 3, during the process of the refrigerator door moving from the closed state to the 90° open state, point B moves inward along the straight line B1A1, and point A also moves in a straight line. The straight line on which point A's trajectory is located is defined as the reference line L, and the angle between the reference line L and the refrigerator body is denoted as α. The angle between the side of the refrigerator door and the side of the refrigerator body is defined as the opening angle θ. The refrigerator door is open to 90° as shown in Figure 4.

[0107] As shown in Figure 5, during the process of the refrigerator door opening from 90° to continuing to open, the refrigerator door moves in a circle around the vertical line where point B1 is located, and the radius AB1 of the circle corresponding to point A is the largest.

[0108] Step 2: Determine the angle α between the reference line L and the refrigerator body;

[0109] As shown in Figure 6, the distance between the drawer boundary and the inner side panel of the refrigerator is δ, and the thickness of the refrigerator door is d.

[0110] To ensure that the drawer can be freely extended after the refrigerator door is opened, the maximum radius AB1 of the circular motion is the distance δ between the drawer boundary and the inner side panel of the refrigerator.

[0111] With the refrigerator door open to 90°:

[0112] δ=AB1 (1)

[0113] d=AB=A1B1=A1B+BB1 (2)

[0114] at the same time,

[0115] α=∠A1AB (3)

[0116] Solving for α using trigonometric relationships, we obtain the relationship between α, δ, and d as follows:

[0117]

[0118] Specifically, in step 2, the process of solving α using trigonometric function relationships to obtain equation (4) is as follows:

[0119] With the refrigerator door open to 90°, in triangle ABB1,

[0120]

[0121]

[0122]

[0123] In △ABA1,

[0124] A1B=AB×tan∠A1AB=d×tanα(4.4)

[0125] therefore,

[0126]

[0127] Step 3: Determine the equation of motion of the hinge axis during the process of the refrigerator door opening 90° from closed;

[0128] Where the distance from the central axis of the hinge shaft to the refrigerator body is 'a', and the distance from the hinge shaft to the cabinet body is 'b'; the calculation process of the motion trajectory equation of the hinge shaft during the process of the refrigerator door opening 90° from closed is as follows:

[0129] As shown in Figure 7, the motion coordinate system is determined as follows: point B of the refrigerator door is taken as the origin, the straight line BA is the Y-axis, and the straight line perpendicular to BA is the X-axis.

[0130] The position of the hinge axis centerline is point O;

[0131] Draw a straight line perpendicular to the front face of the refrigerator body from point O, with the foot of the perpendicular at point F; draw a straight line perpendicular to the side face of the cabinet from point O, with the foot of the perpendicular at point G; the intersection of FO and the Y-axis is J, and the intersection of GO and the Y-axis is M.

[0132] Draw a straight line perpendicular to the Y-axis from point O, with the foot of the perpendicular at point I;

[0133] but:

[0134] a=FO=A1G=FJ+JO (5)

[0135] b = GO = A1F = GM + MO (6)

[0136] The coordinates (x, y) of point O in the moving coordinate system are solved using trigonometric functions, where...

[0137]

[0138]

[0139] The coordinates (x, y) of point O in the motion coordinate system are the equation of the motion trajectory of the hinge axis during the process of the refrigerator door opening 90° from closed.

[0140] Specifically, in step 3, the process of using trigonometric functions to solve for the coordinates (x, y) of point O in the moving coordinate system is as follows:

[0141] During the process of the refrigerator door opening 90° from closed, in △ABA1,

[0142]

[0143] therefore,

[0144]

[0145] but,

[0146]

[0147] In the background music (BGM),

[0148]

[0149] but,

[0150]

[0151] In △MIO,

[0152]

[0153] The x-coordinate of point O in the moving coordinate system is x = 10;

[0154] The ordinate of point O in the moving coordinate system

[0155]

[0156] Step 3: Draw the motion trajectory curve at the top of the refrigerator door using the motion trajectory equation obtained in Step 2. This motion trajectory curve is the first segment of the center line curve of the guide groove during the process of the refrigerator door opening 90° from closing.

[0157] Step 4: With the refrigerator door open to 90°, draw an arc curve along the closing direction, with the distance from point O to point B1 as the radius and the end point of the first segment of the center line curve of the guide groove as the starting point. The included angle of the arc curve is β. This arc curve is the second segment of the center line curve of the guide groove during the process of the refrigerator door opening from 90° to the maximum opening angle.

[0158] in,

[0159]

[0160] In equation (9), γ is the maximum opening angle, which can be set to 115°;

[0161] Step 5: Determine the width of the guide groove based on the diameter of the hinge shaft;

[0162] The width of the guide groove is 0.1 mm larger than the diameter of the corresponding hinge shaft to reduce friction between the shaft and the groove during movement.

[0163] Step 6: Determine the outline of the guide groove based on the guide groove centerline curve obtained in Steps 3 and 4 and the guide groove width obtained in Step 5.

[0164] The design of the guide groove is now complete.

[0165] The guide groove designed by the method of this application, after cooperating with the hinge shaft, allows the outer edge of the front face of the refrigerator door to move inward along the side of the cabinet during the process of the refrigerator door opening from the closed state to 90°. During the process of the refrigerator door continuing to open from 90°, the refrigerator door moves in a circle around the side of the front face of the cabinet, so that the refrigerator door will not rub or collide with the corresponding side of the cabinet during the opening process.

[0166] Example 3:

[0167] According to the design method in Embodiment 2, there are two sets of hinge shafts and guide grooves, and the two guide grooves are designed.

[0168] Where d = 62 mm, δ = 76.8 mm; from equation (4), α = 15°;

[0169] The first hinge pin has the following dimensions: a = 48 mm, b = 17 mm, and a diameter of 4 mm.

[0170] The second hinge pin has the following dimensions: a = 54 mm, b = 40 mm, and a diameter of 4 mm.

[0171] The maximum opening angle of the refrigerator door is γ = 115°;

[0172] The final outlines of the first guide groove that mates with the first hinge axis and the second guide groove that mates with the second hinge axis are shown in Figure 8.

[0173] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, they are not intended to limit the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A design method for a guide groove in a hinge for an embedded refrigerator, characterized in that, The hinge for an embedded refrigerator includes a mating hinge shaft and a guide groove; the hinge shaft is fixedly installed on the top front side of the refrigerator body, and the guide groove is installed at the top of the refrigerator door; the hinge shaft extends downward in a vertical direction; the lower end of the hinge shaft is inserted into the corresponding guide groove; during the process of the refrigerator door opening from a closed state to 90°, the guiding engagement of the guide groove and the hinge shaft causes the outer edge of the front face of the refrigerator door to move inward along the side of the cabinet; during the process of the refrigerator door continuing to open from 90°, the guiding engagement of the guide groove and the hinge shaft causes the refrigerator door to move in a circular motion around the side of the front face of the cabinet; the design method includes the following steps: Step 1: Determine the movement process of the refrigerator door; using the top view of the refrigerator as a reference, when the refrigerator door is in a closed state, define two points on the side of the refrigerator door, the point closer to the refrigerator body is point A, the point farther from the refrigerator body is point B, and the point on the side of the cabinet corresponding to point A is point A1, and so on. Point B1 is the point on the side of the cabinet corresponding to point B. During the process of the refrigerator door opening from a closed state to a 90° open state, point B moves inward along the straight line B1A1, thus point A also moves in a straight line. The straight line containing the trajectory of point A is defined as reference line L, and the angle between reference line L and the refrigerator cabinet is denoted as α. The angle between the side of the refrigerator door and the side of the refrigerator cabinet is defined as the opening angle θ. During the process of the refrigerator door continuing to open from 90°, the refrigerator door makes a circular motion around the vertical line containing point B1, and the radius AB1 of the circular motion corresponding to point A is the largest. Step 2: Determine the angle α between reference line L and the refrigerator cabinet. The distance between the drawer boundary and the inner panel of the refrigerator cabinet is δ, and the thickness of the refrigerator door is d. To ensure that the drawer can be freely extended after the refrigerator door is opened, the maximum radius AB1 of the circular motion is the distance δ between the drawer boundary and the inner panel of the refrigerator cabinet. In the state where the refrigerator door is open at 90°: （1） (2) At the same time, (3) Solve for α using trigonometric function relationships to obtain the relationship between α, δ, and d: (4) Step 3: Determine the motion trajectory equation of the hinge axis during the process of the refrigerator door opening 90° from closed; the distance from the central axis of the hinge axis to the refrigerator body is a, and the distance from the cabinet is b; the calculation process of the motion trajectory equation of the hinge axis during the process of the refrigerator door opening 90° from closed is as follows: Determine the motion coordinate system: take point B of the refrigerator door as the origin, the straight line BA as the Y-axis, and the straight line perpendicular to BA as the X-axis; the position of the central axis of the hinge axis is point O; draw a straight line perpendicular to the front face of the refrigerator body from point O, with the foot of the perpendicular at point F; draw a straight line perpendicular to the side of the cabinet from point O, with the foot of the perpendicular at point G; the intersection of FO and the Y-axis is J, and the intersection of GO and the Y-axis is M; draw a straight line perpendicular to the Y-axis from point O, with the foot of the perpendicular at point I; then: （5） (6) Solve for the coordinates (x, y) of point O in the moving coordinate system using trigonometric relationships, where, （7） (8) The coordinates (x, y) of point O in the motion coordinate system are the motion trajectory equation of the hinge axis during the process of the refrigerator door opening from 90° to 90°; Step 3: Draw the motion trajectory curve at the top of the refrigerator door using the motion trajectory equation obtained in Step 2. This motion trajectory curve is the first segment centerline curve of the guide groove during the process of the refrigerator door opening from 90° to 90°; Step 4: With the refrigerator door open at 90°, draw an arc curve along the closing direction with the distance from point O to point B1 as the radius and the end point of the first segment centerline curve of the guide groove as the starting point. The included angle of the arc curve is ; This arc curve is the second segment centerline curve of the guide groove during the process of the refrigerator door opening from 90° to the maximum opening angle; Among them, (9) In equation (9), is the maximum opening angle; Step 5: Determine the width of the guide groove according to the diameter of the hinge shaft; Step 6: Determine the outline of the guide groove according to the center line curve of the guide groove obtained in steps 3 and 4 and the width of the guide groove obtained in step 5.

2. The design method of the guide groove in the hinge for an embedded refrigerator as described in claim 1, characterized in that, A mounting plate is fixedly installed at the top of the hinge shaft, and the mounting plate is fixedly installed at the top of the refrigerator body.

3. The design method of the guide groove in the hinge for an embedded refrigerator as described in claim 1, characterized in that, Two sets of matching hinge shafts and guide grooves are provided.

4. The design method of the guide groove in the hinge for an embedded refrigerator as described in claim 1, characterized in that, In step 2, the process of solving α using trigonometric functions to obtain equation (4) is as follows: When the refrigerator door is opened to 90°, in △ABB1, （4.1） （4.2） (4.3) In △ABA1, (4.4) Therefore, （4.5）。 5. The design method of the guide groove in the hinge for an embedded refrigerator as described in claim 1, characterized in that, In step 3, the process of solving for the coordinates (x, y) of point O in the moving coordinate system using trigonometric functions is as follows: During the process of the refrigerator door opening 90° from closed to open, in △ABA1, (8.1) Therefore, (8.2) Then, (8.3) In △BGM, (8.4) Then, (8.5) In △MIO, (8.6) The abscissa of point O in the moving coordinate system is x=IO; the ordinate of point O in the moving coordinate system is... （8.7）。

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