Door body hinge device

Abstract

A door hinge device comprises a first hinged support, a second hinged support, a first connecting rod, a second connecting rod, a third connecting rod, an elastic pressing rod, a buffering rod and a supporting rod. Wherein the first hinged support is provided with a first supporting pivot point, the second connecting rod is provided with a second supporting pivot point, the first connecting rod, the second connecting rod, the third connecting rod and the second hinged support form a four-connecting-rod mechanism, the third connecting rod is provided with a pushing piece, and the elastic pressing rod is arranged on the first connecting rod and makes sliding contact with the pushing piece through a pulley. A buffering piece is arranged on the second hinged support, the buffering rod is arranged on the second connecting rod and abuts against the buffering piece, and the supporting rod is connected between the first supporting pivot point and the second supporting pivot point in a pivoted mode through the third connecting rod. Therefore, better supporting acting force can be further provided, and the effects that a door body of a refrigerator or a cold storage can be opened and closed at any time, instant collision is avoided when the door is closed, and the door is automatically closed can be achieved at the same time.

Description

Technical Field

[0001] This utility model relates to a hinge, and more particularly to a door hinge device applicable to refrigerators or cold storage rooms. Background Technology

[0002] Existing hinge structures used in doors such as refrigerators or cold storage rooms require sufficient support due to the relatively heavy door weight. They must also allow for smooth opening and closing, prevent sudden impact to the cabinet when closing, and automatically close when the door approaches the cabinet. Therefore, existing hinge structures often fail to effectively fulfill these functions due to insufficient support.

[0003] In view of this, in order to improve and solve the above-mentioned deficiencies, the creator has devoted himself to research and applied theoretical knowledge, and finally proposed a utility model with a reasonable design that effectively improves the above-mentioned deficiencies. Utility Model Content

[0004] The main objective of this invention is to provide a door hinge device that can provide better support force, thereby enabling the door of a refrigerator or cold storage to open and stop at will, to close without sudden impact, and to have the function of automatic closing.

[0005] To achieve the above objectives, this utility model provides a door hinge device, including a first hinge seat, a second hinge seat, a first connecting rod, a second connecting rod, a third connecting rod, an elastic pressure rod, a buffer rod, and a support rod; the first hinge seat has a first fixed part and a first pivot part disposed on the first fixed part, and the first pivot part is provided with a first fixed pivot point and a first support pivot point; the second hinge seat has a second fixed part, a second pivot part disposed on the second fixed part, and a buffer member disposed on the second hinge seat, and the second pivot part is provided with a buffer pivot point and a second fixed pivot point; the first connecting rod has a first rod body and a first connecting rod pivot part disposed on the first rod body, and the first connecting rod pivot part is pivotally connected to the first fixed pivot point at one end adjacent to the first rod body, and a recessed part is provided on the first rod body. The first accommodating space; the second link has a second rod body and a second link pivot disposed on the second rod body, wherein the second link pivot is pivotally connected to the other end of the first rod body at one end adjacent to the second rod body, and the other end of the second rod body is pivotally connected to a buffer pivot point, and a second accommodating space is recessed on the second rod body, and a second support pivot point is disposed on the second link pivot point; the third link has a third rod body and a pusher disposed on the third rod body, wherein the two ends of the third rod body are respectively connected between the second hinge seat and the first link, and together with the second link, they form a four-bar linkage; the elastic pressure rod is disposed in the first accommodating space and has a pulley that makes sliding contact with the pusher; the buffer rod is disposed in the second accommodating space and abuts against the buffer rod; the support rod is pivotally connected between the first support pivot point and the second support pivot point through the third link. Attached Figure Description

[0006] Figure 1 This is a three-dimensional exploded view of the present invention.

[0007] Figure 2 This is a three-dimensional assembly diagram of the present invention.

[0008] Figure 3 This is an exploded perspective view of the second connecting rod, buffer rod, and support rod in this utility model.

[0009] Figure 4 This is a cross-sectional schematic diagram of the present invention in its folded state.

[0010] Figure 5 This is a cross-sectional schematic diagram of the fully open state of this utility model.

[0011] Figure 6 This is a cross-sectional schematic diagram of the present invention in its semi-open state.

[0012] Figure 7 This is a cross-sectional schematic diagram of the folded state of another embodiment of the present invention.

[0013] Explanation of symbols in the attached diagram:

[0014] 1: First hinge seat; 10: First fixed part; 11: First pivot part; 110: First fixed pivot point; 111: First support pivot point; 2: Second hinge seat; 20: Second fixed part; 21: Second pivot part; 210: Buffer pivot point; 211: Second fixed pivot point; 22: Buffer element; 220: Fixed point; 221: Second cam surface; 221a: Second abutment edge; 221b: Second sliding surface; 221c: Second critical edge; 3: First connecting rod; 30: First rod body; 31: First connecting rod pivot part; 310: First pivot point of connecting rod; 311: Second pivot point of connecting rod; 312: Pushing pivot point; 32: First accommodating space; 320: Pressing surface; 33: First limiting structure; 34: Second limiting structure; 4: Second connecting rod; 40: Second rod body; 41: Second connecting rod pivot part; 410: Connecting... 411: Third pivot point of the rod; 412: Fourth pivot point of the connecting rod; 412: Second support pivot point; 42: Second accommodating space; 5: Third connecting rod; 50: Third rod body; 500: Passable space; 501: Fifth pivot point of the connecting rod; 502: Sixth pivot point of the connecting rod; 51: Pushing member; 510: Pushing pivot point; 511: First cam surface; 511a: First abutting edge; 511b: First sliding surface; 511c: First critical edge; 6: Elastic pressure rod; 60: Pressure rod; 600: Pulley seat; 601: Rod part; 61: Pulley; 610: Shaft part; 62: Elastic component; 7: Buffer rod; 70: Buffer body; 700: Pressure-bearing part; 701: Telescopic rod; 71: Buffer seat; 710: Mounting part; 711: Assembly part; 72: Protective sleeve; 720: Sleeve part; 721: Pressure-bearing surface; 8: Support rod. Detailed Implementation

[0015] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings are provided for reference and illustration only and are not intended to limit this utility model.

[0016] Please see Figure 1 and Figure 2 The figures shown are an exploded perspective view and a combined perspective view of the present invention. The present invention provides a door hinge device, applicable to applications such as refrigerators or cold storage rooms, for pivoting the door. The door hinge device includes a first hinge seat 1, a second hinge seat 2, a first connecting rod 3, a second connecting rod 4, a third connecting rod 5, an elastic pressure rod 6, a buffer rod 7, and a support rod 8; wherein:

[0017] The first hinge 1 has a first fixing part 10 and a first pivoting part 11 disposed on the first fixing part 10. The first fixing part 10 allows the first hinge 1 to be fixed to a cabinet such as a refrigerator or cold storage (not shown). The first pivoting part 11 is provided with a first fixing pivot point 110 and a first supporting pivot point 111, which are pivotally connected to the first connecting rod 3 and the support rod 8 respectively.

[0018] The second hinge 2 has a second fixing part 20, a second pivoting part 21 disposed on the second fixing part 20, and a buffer member 22. The second fixing part 20 allows the second hinge 2 to be fixed to the door of a refrigerator or cold storage (not shown), thereby allowing the door of the refrigerator or cold storage to open and close relative to its cabinet. The second pivoting part 21 is provided with a buffer pivot point 210 and a second fixing pivot point 211. The buffer pivot point 210 is connected to the buffer member 22 by a fixing point 220 and is fixedly disposed on the second hinge 2. The buffer pivot point 210 and the second fixing pivot point 211 are respectively pivotally connected to the second connecting rod 4 and the third connecting rod 5.

[0019] The first connecting rod 3 has a first rod body 30 and a first connecting rod pivot 31 disposed on the first rod body 30. The first connecting rod pivot 31 has a first connecting rod pivot point 310 and a second connecting rod pivot point 311 at its two ends adjacent to the first rod body 30, and a pushing pivot point 312 is provided on the first connecting rod pivot 31 between the first connecting rod pivot point 310 and the second connecting rod pivot point 311. The first connecting rod pivot point 310 is pivotally connected to the first fixed pivot point 110 by means of a pivot, so that the first connecting rod 3 can swing with the first hinge seat 1 and can be stacked on the first hinge seat 1. In addition, the first rod body 30 has a first receiving space 32 recessed near the first connecting rod pivot point 310, so that the elastic pressure rod 6 can be disposed in the first receiving space 32.

[0020] Please refer to the following: Figure 3As shown, the second link 4 has a second rod body 40 and a second link pivot 41 disposed on the second rod body 40. The second link pivot 41 has a third link pivot 410 and a fourth link pivot 411 respectively at both ends adjacent to the second rod body 40. A second support pivot 412 is provided on the second link pivot 41 between the third link pivot 410 and the fourth link pivot 411. The third link pivot 410 is pivotally connected to the second link pivot 311 of the first link 3 via a pivot, and the fourth link pivot 411 is pivotally connected to the buffer pivot 210 of the second hinge seat 2 via a pivot, so that the second link 4 can swing between the first link 3 and the second hinge seat 2. In addition, the second link 4 has a recessed second receiving space 42 near the fourth pivot point 411 of the link, so that the buffer rod 7 can be disposed in the second receiving space 42.

[0021] Please see again Figure 1 As shown, the third link 5 has a third rod body 50 and a pusher 51 disposed on the third rod body 50. The third rod body 50 can be formed by two pieces arranged at a distance, and can be integrally formed by plate stamping between the two pieces, or other components (not shown) can be provided to connect between the two pieces to maintain their spacing, so as to form a passable space 500 on the third rod body 50. In addition, a fifth pivot point 501 and a sixth pivot point 502 are respectively provided at both ends of the third rod body 50. The fifth pivot point 501 is pivotally connected to the pusher pivot point 312 of the first link 3 by means of a pivot, and the sixth pivot point 502 is pivotally connected to the second fixed pivot point 211 of the second hinge seat 2 by means of a pivot, so that the third link 5 can form a four-bar linkage with the second hinge seat 2, the first link 3 and the second link 4. The pusher 51 can be connected to the fifth pivot point 501 of the connecting rod via a pusher pivot point 510.

[0022] Please refer to the following: Figure 1 and Figure 4 As shown, the elastic pressure rod 6 is disposed within the first accommodating space 32 of the first connecting rod 3, and a pressing surface 320 may be provided within the first accommodating space 32. The elastic pressure rod 6 may include a pressure rod 60, a pulley 61 disposed on the pressure rod 60, and an elastic component 62 providing elastic restoring force to the pressure rod 60 after being compressed. The pressure rod 60 may have a pulley seat 600 and a rod portion 601 connected to the pulley seat 600. The pulley 61 has a shaft portion 610 pivotally mounted on the pulley seat 600, and the rod portion 601 can pass through the elastic component 62, allowing the elastic component 62 to abut against the pulley seat 600 and the pressing surface 320. Figure 4As shown, the pusher 51 of the third link 5 makes sliding contact with the pulley 61. The pusher 51 is provided with a first cam surface 511. The first cam surface 511 has a first abutting edge 511a, a first sliding surface 511b extending along the first abutting edge 511a, and a first critical edge 511c located between the first abutting edge 511a and the first sliding surface 511b. When the second hinge 2 is retracted onto the first hinge 1, the elastic pressure rod 6 pushes the pulley 61 into the first abutting edge 511a by the elastic force of the elastic component 62.

[0023] Please refer to the following: Figure 1 and Figure 3 As shown, the buffer rod 7 can be a hydraulic or pneumatic push rod, disposed within the second accommodating space 42 of the second connecting rod 4, and abutting against the buffer member 22 of the second hinge seat 2. The buffer rod 7 can have a buffer body 70 and a buffer seat 71 for mounting the buffer body 70. The buffer seat 71 has a mounting portion 710 and an assembly portion 711, wherein the mounting portion 710 is for housing the buffer body 70, and the assembly portion 711 is used to assemble it onto the second connecting rod 4 so that the buffer body 70 is located within the second accommodating space 42. The buffer body 70 has a pressure-receiving portion 700 and a telescopic rod 701. When the pressure-receiving portion 700 is compressed, the telescopic rod 701 can be compressed inward and can be restored by means of hydraulic or pneumatic pressure. In addition, a protective sleeve 72 can be fitted over the buffer body 70. The protective sleeve 72 has a sleeve portion 720 for the pressure-bearing portion 700 of the buffer body 70 to fit into, and the front end of the protective sleeve 72 also has a pressure-bearing surface 721 to replace the pressure-bearing portion 700 of the buffer body 70 in making frictional contact with the buffer member 22. For example... Figure 4 As shown, the buffer 22 has a second cam surface 221, which has a second abutment edge 221a, a second sliding surface 221b extending along the second abutment edge 221a, and a second critical edge 221c connecting the second sliding surface 221b. When the second hinge 2 is retracted onto the first hinge 1, the buffer rod 7 abuts against the second abutment edge 221a and is compressed.

[0024] Please see again Figure 1 , Figure 3 and Figure 4As shown, the support rod 8 is pivotally connected between the first support pivot point 111 and the second support pivot point 412 via the aforementioned third link 5. Specifically, the support rod 8 may have a support rod body 80 and a first pivot end 81 and a second pivot end 82 connected to both ends of the support rod body 80. The first pivot end 81 is pivotally mounted at the first support pivot point 111, and the second pivot end 82 is pivotally mounted at the second support pivot point 412. The support rod body 80 may have a first support segment 800, a second support segment 801, and a third support segment 802 connected between the first support segment 800 and the second support segment 801. A first reverse fold portion 802a is formed between the first support segment 800 and the third support segment 802, and a second reverse fold portion 802b is formed between the second support segment 801 and the third support segment 802. The reverse folding directions of the first reverse fold portion 802a and the second reverse fold portion 802b are opposite, thereby improving the strength that the support rod 8 can support through the reverse folding structure.

[0025] Therefore, the door hinge device of this utility model can be obtained by using the above-described structure.

[0026] Accordingly, Figure 5 As shown, when the refrigerator or cold storage door is opened, the first connecting rod 3 flips outward, causing the second hinge 2 to open to a certain angle with the door. The buffer 22 of the second hinge 2 is pushed by the buffer rod 7, stopping the door at the aforementioned opening angle. Simultaneously, the pushing member 51 of the third connecting rod 5 compresses the elastic pressure rod 6, allowing the support rod 8 to be supported between the first hinge 1 and the second connecting rod 4 via the third connecting rod 5, providing sufficient support force. Conversely, if... Figure 6 As shown, during the closing process of the refrigerator or cold storage door, the elastic pressure rod 6 and the first cam surface 511 abut against each other, applying force to push the elastic pressure rod 6 to make its pulley 61 contact the first cam surface 511, thereby achieving the functions of opening and stopping simultaneously and automatic closing. Furthermore, the buffer rod 7 contacts the second cam surface 221, providing a certain amount of resistance to prevent the door from directly impacting the cabinet, thus ensuring that the door does not impact the cabinet instantly when closing. Therefore, this invention, in conjunction with the support rod to provide sufficient support force during operation, further enhances the aforementioned functions of the elastic pressure rod 6 and the buffer rod 7.

[0027] Furthermore, such as Figure 7 As shown, in another embodiment of this utility model, a first limiting structure 33 may be provided to abut against the front end of the pressure rod 60, and a second limiting structure 34 may be provided to prevent the elastic component 62 from falling out of the first receiving space 32. This further increases the stability of the elastic pressure rod 6 during operation.

[0028] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Therefore, all equivalent technical and means changes made using the contents of the present utility model specification and drawings are also included in the scope of the present utility model and are hereby stated.

Claims

1. A door hinge device, characterized in that, include: A first hinge seat has a first fixing part and a first pivoting part disposed on the first fixing part, and the first pivoting part is provided with a first fixing pivot point and a first supporting pivot point; A second hinge seat has a second fixing part, a second pivot part disposed on the second fixing part, and a buffer member disposed on the second hinge seat, wherein the second pivot part is provided with a buffer pivot point and a second fixing pivot point; A first link has a first rod body and a first link pivot disposed on the first rod body, wherein the first link pivot is pivotally connected to a first fixed pivot point at one end adjacent to the first rod body, and a first receiving space is recessed on the first rod body; A second link has a second rod body and a second link pivot disposed on the second rod body, wherein the second link pivot is pivotally connected to the other end of the first rod body at one end adjacent to the second rod body, and the other end of the second rod body is pivotally connected to the buffer pivot point, and a second receiving space is recessed on the second rod body, and a second support pivot point is provided on the second link pivot; A third link has a third link body and a pusher disposed on the third link body. The two ends of the third link body are respectively connected between the second hinge seat and the first link, and together with the second link, they form a four-bar linkage mechanism. An elastic pressure bar is disposed within the first accommodating space and has a pulley that makes sliding contact with the pushing member; A buffer rod is disposed within the second receiving space and abuts against the buffer member; and A support rod is pivotally connected between the first support pivot point and the second support pivot point via the third link.

2. The door hinge device according to claim 1, characterized in that, The first accommodating space is provided with a pressing surface, and the elastic pressure rod abuts against the pressing surface.

3. The door hinge device according to claim 1, characterized in that, The third rod is composed of two pieces arranged at a distance to form a passageway on the third rod, through which the support rod passes the third connecting rod.

4. The door hinge device according to claim 3, characterized in that, The two pieces are integrally formed by stamping in the shape of a plate, or the spacing is maintained by connecting the two pieces as components.

5. The door hinge device according to claim 1, characterized in that, The elastic pressure bar further includes a pressure bar and an elastic component that provides the pressure bar with an elastic restoring force after being compressed. The pressure bar has a pulley seat and a rod portion connected to the pulley seat. The rod portion passes through the elastic component, and the pulley is pivotally mounted on the pulley seat.

6. The door hinge device according to claim 1, characterized in that, The pusher has a first cam surface, which has a first abutting edge, a first sliding surface extending along the first abutting edge, and a first critical edge located between the first abutting edge and the first sliding surface.

7. The door hinge device according to claim 1, characterized in that, The buffer rod has a buffer body and a buffer seat for the buffer body. The buffer seat has a mounting part and an assembly part. The mounting part is for the buffer body to be disposed therein, and the assembly part is assembled on the second connecting rod so that the buffer body is located in the second accommodating space.

8. The door hinge device according to claim 7, characterized in that, The buffer body is also covered by a protective sleeve, which has a sleeve inside for the buffer body to fit into, and the front end of the protective sleeve has a pressure-bearing surface to abut against the buffer.

9. The door hinge device according to claim 1, characterized in that, The buffer has a second cam surface, which has a second abutment edge, a second sliding surface extending along the second abutment edge, and a second critical edge connecting the second sliding surface.

10. The door hinge device according to claim 1, characterized in that, The support rod has a support rod body, and the support rod body has a first support segment, a second support segment, and a third support segment connected between the first support segment and the second support segment. A first reverse bend is formed between the first support segment and the third support segment, and a second reverse bend is formed between the second support segment and the third support segment. The reverse bend directions of the first reverse bend and the second reverse bend are opposite.

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