Impact-resistant refrigerator hinge

Abstract

The utility model relates to an impact-resistant refrigerator hinge which comprises a box body connecting piece and a door body connecting piece which are rotationally connected through a hinge shaft, a buffer column parallel to the hinge shaft is arranged on the door body connecting piece, a sliding groove is formed in the box body connecting piece, one end of the buffer column is movably clamped in the sliding groove, and the other end of the buffer column is movably clamped in the sliding groove. When the door body connecting piece rotates, the ends of the buffer columns synchronously slide along the sliding grooves. The box body connecting piece is further provided with an ejector rod, the ejector rod is elastically clamped on the box body connecting piece, one end of the ejector rod is connected with a sleeve, and the sleeve is movably arranged on the periphery of the buffer column in a sleeving mode. The ejector rod is directly connected to the periphery of the buffer column in a sleeved mode through the sleeve, compared with a traditional mode that the ejector rod is directly or indirectly connected to the buffer column in an abutting mode, when the hinge rotates, the situation that the whole buffer structure falls apart due to the fact that the ejector rod shifts can be avoided through the structure, and the ejector rod can act on the buffer column all the time; and the structure is more stable and accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of freezer hinges, in particular to a freezer hinge with impact resistance. Background Art

[0002] The opening and closing of the freezer door body need to be realized through a hinge assembly. The hinge assembly is usually composed of two simple connecting blocks hinged together, with a simple structure. When using this kind of hinged assembly, when the freezer door body is fully closed or fully opened, it often causes a large impact force on the freezer box body or the hinge assembly due to the lack of buffering. The freezer door body lacking impact resistance will not only reduce the service life of the freezer after long-term use, but also affect the use safety of the freezer. Therefore, in the prior art, in order to improve this shortcoming, a spring is usually added between the two connecting blocks to make the opening and closing of the door body have a certain elastic buffer force. However, during the long-term use of the spring, its elasticity will have a large attenuation, resulting in a low service life of the buffer structure. Summary of the Utility Model

[0003] In view of this, in order to solve the above technical problems, the utility model provides a freezer hinge with a long service life and impact resistance.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] An impact-resistant freezer hinge includes a box body connecting piece and a door body connecting piece that are rotationally connected through a hinge shaft. A buffer column parallel to the hinge shaft is provided on the door body connecting piece. A sliding groove is provided on the box body connecting piece. One end of the buffer column is movably clamped in the sliding groove. When the door body connecting piece rotates, the end of the buffer column slides synchronously along the sliding groove. A push rod is further provided on the box body connecting piece. The push rod is elastically clamped on the box body connecting piece. One end of the push rod is connected with a sleeve, and the sleeve is movably sleeved on the outer periphery of the buffer column.

[0006] In the above technical solution, when the freezer hinge assembly is in use, the door body connecting piece can be connected to the freezer door body, and the box body connecting piece can be connected to the freezer box body. During the closing or opening process of the freezer door body, under the elastic force of the push rod, the buffer column slides smoothly in the sliding groove, thereby effectively absorbing the impact force generated when the door body rotates, reducing the instantaneous stress directly acting on the hinge shaft and the connecting piece, and thus greatly prolonging the service life of the hinge and the overall freezer.

[0007] In addition, the push rod is directly sleeved on the outer periphery of the buffer column through the sleeve. Compared with the traditional form that the push rod directly or indirectly abuts against the buffer column, this structure makes the sleeve not fall apart due to the offset of the push rod when the hinge rotates, that is, the push rod can always act on the buffer column, and its structure is more stable and accurate.

[0008] Furthermore, a clamping groove is provided on the outer circumference of the sleeve, the clamping groove extends along the circumference of the sleeve and is recessed inwardly along the radial direction of the sleeve, and one end of the push rod is clamped in the clamping groove.

[0009] In the above technical solution, the slot extends along the circumference of the sleeve and is clamped with one end of the push rod, which not only ensures a stable connection between the push rod and the sleeve, but also makes the entire buffer mechanism more stable when subjected to external force, and is not prone to loosening or falling off, thereby improving the structural strength of the entire hinge system. In addition, the clamping method of the slot and the push rod simplifies the assembly process, and can achieve fast and accurate installation without additional fasteners or complicated operating steps, which not only improves production efficiency but also reduces assembly costs.

[0010] Furthermore, the sleeve is provided with a strip-shaped notch, and the strip-shaped notch extends along the axial direction of the sleeve.

[0011] In the above technical solution, the design of the strip-shaped notch allows the sleeve to produce a certain elastic deformation along the axial direction when subjected to external force, thereby more effectively absorbing and dispersing the impact force and stress generated during the rotation of the door body. In addition, the setting of the strip-shaped notch reduces the contact area between the sleeve and the buffer column, thereby reducing the friction and wear between the two during relative movement, which helps to maintain the smooth operation of the hinge system and reduce noise and energy loss. In addition, the setting of the strip-shaped notch also facilitates the addition of lubricating oil into the sleeve to improve the smoothness of rotation between it and the buffer column.

[0012] Furthermore, the slide groove is an arc-shaped structure, and the arc-shaped structure matches the rotation trajectory of the buffer column. Two bosses are provided on the slide groove, and the two bosses are close to two ends of the slide groove.

[0013] In the above technical solution, the slide groove is designed as an arc structure, which closely matches the rotation trajectory of the buffer column, ensuring that the buffer column can slide smoothly along the predetermined path in the slide groove, reducing the noise and wear caused by deviation or shaking. The setting of the two bosses can limit the movement of the buffer column to slow down the movement speed of the buffer column, thereby playing a certain buffering role, avoiding the buffer column from causing severe impact on the weak point of the slide groove, that is, the weak point of the hinge, thereby increasing the service life of the hinge.

[0014] Furthermore, the boss is an arc-shaped protrusion, and the connection between the boss and the slide groove is an arc-shaped transition.

[0015] In the above technical solution, the boss is designed as an arc-shaped protrusion, and the connection with the chute adopts an arc transition. This design can effectively reduce the problem of stress concentration. When the buffer column slides to the position of the boss, the arc transition can smoothly guide the movement of the buffer column, avoiding local high stress caused by right-angle or acute-angle connections, thereby prolonging the service life of the hinge.

[0016] Further, the diameter of the end of the buffer column is smaller than the minimum gap between the boss and the inner side wall of the chute.

[0017] In the above technical solution, since the diameter of the end of the buffer column is smaller than the minimum gap between the boss and the inner side wall of the chute, it is ensured that the buffer column can slide freely and smoothly in the chute without being blocked by the boss or the inner side wall of the chute. This unobstructed sliding mechanism improves the smoothness of the door opening and closing, reducing jamming and friction.

[0018] Further, there are two chutes, and the two chutes are respectively arranged on opposite sides of the box body connecting piece, and both ends of the buffer column are respectively clamped in the two chutes.

[0019] In the above technical solution, by arranging the chutes on opposite sides of the box body connecting piece, a symmetrical structural layout is formed, making the door more stable during the opening and closing process and reducing the possibility of shaking and skew. In addition, the design of the two chutes enables the buffer column to be subjected to more uniform forces during the sliding process. When the door is subjected to external forces, the two chutes can share these forces together, avoiding damage or deformation caused by excessive force on a single chute, thereby improving the overall load-bearing capacity and durability of the hinge system.

[0020] Further, an installation seat is provided on the box body connecting piece, a limiting block is provided on the ejector rod and an elastic member is sleeved thereon. One end of the ejector rod away from the sleeve can movably pass through the installation seat, and the elastic member is located between the limiting block and the installation seat.

[0021] In the above technical solution, the setting of the ejector rod and the elastic member can achieve the buffering function of the hinge. When the door is closed, the ejector rod is pushed by the pressure to compress the elastic member by the limiting block, and the elastic member can absorb and disperse the impact force, thereby protecting the hinge system and the freezer box body from damage. At the same time, the resilience of the elastic member also helps the door to maintain a certain opening force during the opening process, making the operation smoother. At the same time, due to the existence of the elastic member, when the door is completely closed, the elastic member can provide an additional pressure, enabling the door to form a closer contact with the box body, thereby improving the sealing performance of the freezer.

[0022] Further, a plurality of first mounting holes are provided on the box body connecting piece.

[0023] In the above technical solution, the design of multiple first mounting holes provides higher flexibility for the installation of the freezer hinge system. According to the specific structure and installation requirements of the freezer cabinet body, the appropriate mounting hole positions can be selected for installation, so as to ensure that the hinge system can be firmly fixed on the cabinet body and meet the opening and closing requirements of the door body.

[0024] Furthermore, a plurality of second mounting holes are provided on the door body connecting member.

[0025] In the above technical solution, the design of multiple second mounting holes enables the door body connecting member to form a multi-point connection with the door body, thereby greatly enhancing the stability of the connection and ensuring that the door body can maintain stable operation during frequent opening and closing, reducing failures and potential safety hazards caused by loose connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. 1 is one of the schematic diagrams of the overall structure of an embodiment.

[0027] Figure 2 FIG. 2 is the schematic diagram of the structure of a sleeve in an embodiment.

[0028] Figure 3 FIG. 3 is the other schematic diagram of the overall structure of an embodiment.

[0029] Reference numerals: 1 - cabinet body connecting member; 11 - chute; 12 - boss; 13 - mounting seat; 14 - first mounting hole; 2 - door body connecting member; 21 - second mounting hole; 3 - hinge shaft; 4 - buffer column; 5 - ejector rod; 51 - limit block; 6 - sleeve; 61 - card slot; 62 - strip-shaped notch; 7 - elastic member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0031] A preferred embodiment of the present invention is as follows.

[0032] Please refer to Figure 1, An impact-resistant freezer hinge, comprising a cabinet connecting member 1 and a door connecting member 2 rotatably connected by a hinge shaft 3. A buffer post 4 parallel to the hinge shaft 3 is provided on the door connecting member 2. A sliding groove 11 is provided on the cabinet connecting member 1. One end of the buffer post 4 is movably clamped in the sliding groove 11. When the door connecting member 2 rotates, the end of the buffer post 4 synchronously slides along the sliding groove 11. A push rod 5 is further provided on the cabinet connecting member 1. The push rod 5 is elastically clamped on the cabinet connecting member 1. One end of the push rod 5 is connected with a sleeve 6. The sleeve 6 is movably sleeved on the outer periphery of the buffer post 4. Among them, both the cabinet connecting member 1 and the door connecting member 2 are plate structures integrally in a "U" shape, so that the connection between the two can be facilitated. The buffer post 4 is located below the hinge shaft 3, and there is a certain distance between the buffer post 4 and the hinge shaft 3. The buffer post 4 can swing around the hinge shaft 3.

[0033] When the freezer hinge assembly of this embodiment is in use, the door connecting member 2 can be connected to the freezer door body, and the cabinet connecting member 1 can be connected to the freezer cabinet body. During the closing or opening process of the freezer door body, under the elastic force of the push rod 5, the buffer post 4 smoothly slides in the sliding groove 11, thereby effectively absorbing the impact force generated when the door body rotates, reducing the instantaneous stress directly acting on the hinge shaft 3 and the connecting members, and thus greatly extending the service life of the hinge and the overall freezer.

[0034] In addition, the push rod 5 is directly sleeved on the outer periphery of the buffer post 4 through the sleeve 6. Compared with the traditional form in which the push rod 5 directly or indirectly abuts against the buffer post 4, this structure enables the sleeve 6 not to cause the entire buffer structure to fall apart due to the offset of the push rod 5 when the hinge rotates, that is, the push rod 5 can always act on the buffer post 4, and its structure is more stable and accurate.

[0035] Please refer to Figure 2 , in this embodiment, a card slot 61 is provided on the outer periphery of the sleeve 6. The card slot 61 extends along the circumferential direction of the sleeve 6 and is recessed inward along the radial direction of the sleeve 6. One end of the push rod 5 is clamped in the card slot 61. Among them, the push rod 5 is a plate-like structure, and a circular card hole is provided at one end of the push rod 5. The circular card hole can be clamped in the card slot 61.

[0036] The card slot 61 of this embodiment extends along the circumferential direction of the sleeve 6 and is clamped with one end of the push rod 5, which not only ensures the firm connection between the push rod 5 and the sleeve 6, but also makes the entire buffer mechanism more stable when subjected to external forces, not easy to loosen or fall off, thereby enhancing the structural strength of the entire hinge system. In addition, the clamping method of the card slot 61 and the push rod 5 simplifies the assembly process. Without additional fasteners or complex operation steps, rapid and accurate installation can be achieved, which not only improves production efficiency but also reduces assembly costs.

[0037] In this embodiment, the sleeve 6 is provided with a strip-shaped notch 62, which extends along the axial direction of the sleeve 6. The strip-shaped notch 62 may be equal to the length of the sleeve 6, or may be smaller than the length of the sleeve 6.

[0038] The design of the strip notch 62 allows the sleeve 6 to produce a certain elastic deformation along the axial direction when subjected to external force, thereby more effectively absorbing and dispersing the impact force and stress generated during the rotation of the door body. In addition, the provision of the strip notch 62 reduces the contact area between the sleeve 6 and the buffer column 4, thereby reducing the friction and wear between the two during relative movement, which helps to maintain the smooth operation of the hinge system and reduce noise and energy loss. In addition, the provision of the strip notch 62 also facilitates the addition of lubricating oil into the sleeve 6 to improve the smoothness of rotation between it and the buffer column 4.

[0039] In this embodiment, the slide groove 11 is an arc-shaped structure, which matches the rotation trajectory of the buffer column 4 . Two bosses 12 are provided on the slide groove 11 , and the two bosses 12 are close to two ends of the slide groove 11 .

[0040] In this embodiment, the slide groove 11 is designed as an arc structure, and closely matches the rotation trajectory of the buffer column 4, ensuring that the buffer column 4 can slide smoothly along the predetermined path in the slide groove 11, reducing the noise and wear caused by deviation or shaking. The setting of the two bosses 12 can limit the movement of the buffer column 4 to slow down the movement speed of the buffer column 4, thereby playing a certain buffering role, avoiding the buffer column 4 from causing severe impact on the weak point of the slide groove 11, that is, the weak point of the hinge, thereby improving the service life of the hinge.

[0041] In this embodiment, the boss 12 is an arc-shaped protrusion, and the connection between the boss 12 and the slide groove 11 is an arc-shaped transition. The boss 12 is designed as an arc-shaped protrusion, and the connection with the slide groove 11 adopts an arc-shaped transition. This design can effectively reduce the problem of stress concentration. When the buffer column 4 slides to the position of the boss 12, the arc-shaped transition can smoothly guide the movement of the buffer column 4, avoiding the local high stress caused by the right-angle or acute-angle connection, thereby extending the service life of the hinge.

[0042] It should be noted that the diameter of the end of the buffer column 4 is smaller than the minimum gap between the boss 12 and the inner wall of the slide groove 11. This technical solution ensures that the buffer column 4 can slide freely and smoothly in the slide groove 11 without being hindered by the boss 12 or the inner wall of the slide groove 11. This unobstructed sliding mechanism improves the smoothness of the door opening and closing and reduces jamming and friction.

[0043] In this embodiment, there are two sliding grooves 11, which are respectively arranged on the opposite sides of the box body connecting piece 1, and both ends of the buffer column 4 are respectively clamped in the two sliding grooves 11. Both of the two sliding grooves 11 are through groove structures, and the diameters of both ends of the buffer column 4 are smaller than the width of the sliding groove 11, that is, there is a gap between the buffer column 4 and the sliding groove 11.

[0044] In this embodiment, by arranging the sliding grooves 11 on the opposite sides of the box body connecting piece 1, a symmetrical structural layout is formed, making the door body more stable during the opening and closing processes, and reducing the possibility of shaking and skew. In addition, the design of the two sliding grooves 11 enables the buffer column 4 to be subjected to a more uniform force during the sliding process. When an external force acts on the door body, the two sliding grooves 11 can share these forces together, avoiding damage or deformation caused by excessive force on a single sliding groove 11, thereby improving the overall load-bearing capacity and durability of the hinge system.

[0045] In this embodiment, an installation seat 13 is provided on the box body connecting piece 1. A limiting block 51 is provided on the ejector rod 5 and an elastic member 7 is sleeved thereon. One end of the ejector rod 5 far from the sleeve 6 is movably passed through the installation seat 13, and the elastic member 7 is located between the limiting block 51 and the installation seat 13. Among them, the elastic member 7 is a spring. Of course, as another implementation manner, the elastic member 7 can also be an elastic structure such as elastic rubber or elastic sheet.

[0046] The arrangement of the ejector rod 5 and the elastic member 7 in this embodiment can realize the buffering function of the hinge. When the door body is closed, the ejector rod 5 is subjected to pressure to push the limiting block 51 to compress the elastic member 7, and the elastic member 7 can absorb and disperse the impact force, thereby protecting the hinge system and the freezer box body from damage. At the same time, the resilience of the elastic member 7 also helps the door body to maintain a certain opening force during the opening process, making the operation smoother. At the same time, due to the existence of the elastic member 7, when the door body is completely closed, the elastic member 7 can provide an additional pressure, making the door body and the box body form a closer contact, thereby improving the sealing performance of the freezer.

[0047] Please refer to Figure 3 , in this embodiment, a plurality of first mounting holes 14 are provided on the box body connecting piece 1, and a plurality of second mounting holes 21 are provided on the door body connecting piece 2.

[0048] In the above technical solution, the design of multiple first mounting holes 14 and second mounting holes 21 provides higher flexibility for the installation of the freezer hinge system. According to the specific structure and installation requirements of the freezer cabinet body or the freezer door body, the appropriate mounting hole positions can be selected for installation, so as to ensure that the hinge system can be stably installed and meet the requirements for opening and closing the door body. In addition, the design of multiple first mounting holes 14 or second mounting holes 21 enables the cabinet body connecting member 1 or the door body connecting member 2 to form a multi-point connection with the corresponding door body or cabinet body, thus greatly enhancing the stability of the connection and ensuring that the door body can maintain stable operation during frequent opening and closing, reducing failures and potential safety hazards caused by loose connections.

[0049] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0051] Although the description of the present utility model is carried out in combination with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included within the spirit and scope of the appended claims.

Claims

1. An impact-resistant freezer hinge, comprising a cabinet connecting member and a door connecting member rotatably connected by a hinge shaft, characterized in that, A buffer column parallel to the hinge shaft is provided on the door body connecting piece, a sliding groove is provided on the box body connecting piece, one end of the buffer column is movably clamped in the sliding groove, and when the door body connecting piece rotates, the end of the buffer column synchronously slides along the sliding groove; a push rod is further provided on the box body connecting piece, the push rod is elastically clamped on the box body connecting piece, a sleeve is connected to one end of the push rod, and the sleeve is movably sleeved on the outer periphery of the buffer column.

2. The impact-resistant freezer hinge according to claim 1, wherein A clamping groove is provided on the outer periphery of the sleeve, the clamping groove extends along the circumferential direction of the sleeve and is recessed inward along the radial direction of the sleeve, and one end of the push rod is clamped in the clamping groove.

3. The impact-resistant freezer hinge according to claim 1, wherein A strip-shaped notch is provided on the sleeve, and the strip-shaped notch extends along the axial direction of the sleeve.

4. A shock-resistant freezer hinge according to claim 1, wherein, The sliding groove is of an arc structure, and the arc structure matches the rotation track of the buffer column. Two convex platforms are provided on the sliding groove, and the two convex platforms are close to both ends of the sliding groove.

5. The impact-resistant freezer hinge according to claim 4, wherein, The convex platform is an arc-shaped protrusion, and the connection between the convex platform and the sliding groove is an arc transition.

6. The impact-resistant freezer hinge according to claim 4, wherein The diameter of the end of the buffer column is smaller than the minimum gap between the convex platform and the inner side wall of the sliding groove.

7. The impact-resistant freezer hinge according to claim 1, wherein There are two sliding grooves, and the two sliding grooves are respectively arranged on opposite sides of the box body connecting piece, and both ends of the buffer column are respectively clamped in the two sliding grooves.

8. A shock-resistant freezer hinge according to claim 1, characterized in that, An installation seat is provided on the box body connecting piece, a limiting block is provided on the push rod and an elastic member is sleeved, one end of the push rod away from the sleeve can movably pass through the installation seat, and the elastic member is located between the limiting block and the installation seat.

9. A shock-resistant freezer hinge according to any one of claims 1-8, characterized in that, A plurality of first installation holes are provided on the box body connecting piece.

10. A shock-resistant freezer hinge according to any one of claims 1-8, characterized in that, A plurality of second installation holes are provided on the door body connecting piece.

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