Small door buckle and ultralow-temperature refrigeration equipment

Abstract

The utility model discloses a small door buckle and ultralow-temperature refrigeration equipment, and the small door buckle comprises a small door handle, a handle seat, a fixed seat and a rotating shaft, the small door handle is clamped between the handle seat and the fixing seat in an attached mode, a lock hook is integrally formed on the small door handle and is of a smooth, flat and solid hook structure, the rotating shaft is installed on the fixing seat, and the lock hook is hinged to the rotating shaft. A protruding column is integrally formed on the handle base, the protruding column is of a smooth, seamless and solid cylinder structure, the lock hook has the movement stroke of rotating to tightly hook the protruding column or rotating to retreat and loosen the protruding column, and locking or unlocking of the small door handle and the handle base is completed. The outer surface of the protruding column is smooth and seamless, frost can only be condensed on the surface of the protruding column, follow-up cleaning is easy, the influence on normal work of the small door buckle is small, the degree of damage to the structure of the small door buckle is small, the lock hook is tightly matched with the protruding column, and the lock hook can be tightly locked through rotation tightening friction between the hook opening portion and the protruding column. And frost on the peripheral surface of the protruding column can be scratched and removed.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-low temperature equipment, in particular to a small door handle and ultra-low temperature refrigeration equipment. Background Art

[0002] At present, the small doorknobs of known ultra-low temperature equipment are generally tightened by bearings. However, as the ultra-low temperature products are used, water vapor will condense into frost on the surface of the small doorknobs. Therefore, the surface of the bearings will also frost. During the engagement process with the small doorknob, the frost cannot be normally locked or unlocked due to the frost, causing the small doorknob to fail and causing scratches on the surface of the bearings. At the same time, the bearings themselves have gaps and cracks in their structure, and frost will also form in the gaps and cracks. Over time, a large amount of frost will bring the risk of extrusion and deformation to the bearings, hindering the normal locking or unlocking of the small doorknob, and causing damage to the bearings. Utility Model Content

[0003] The utility model provides a small door handle and ultra-low temperature refrigeration equipment which can effectively reduce the loss rate and improve the normal use rate, and can solve at least one of the above-mentioned technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A small door handle, comprising a small door handle, a handle seat, a fixing seat and a rotating shaft;

[0006] The small door handle is fitted and clamped between the handle seat and the fixing seat. A lock hook is integrally formed on the small door handle. The lock hook is a smooth, flat and solid hook structure. The rotating shaft is installed on the fixing seat. The lock hook is hinged to the rotating shaft.

[0007] The handle seat is integrally formed with a protruding column, which is a smooth, seamless and solid cylindrical structure. The lock hook has a movement range of rotating to tighten and hook or rotating to force and release the protruding column, thereby completing the locking or unlocking of the small door handle and the handle seat.

[0008] Furthermore, the small door handle includes a pull handle, a connecting piece and a lock hook that are integrally connected, the connecting piece includes a first folded edge portion and a first mounting edge portion that are integrally connected in an L-shaped structure, the pull handle is connected to the first folded edge portion and is parallel to the plane where the first folded edge portion is located, and the lock hook is connected to the first mounting edge portion and is parallel to the plane where the first mounting edge portion is located.

[0009] Furthermore, an axial hole is provided on the lock hook, the axial hole is penetrated on the rotating shaft, and the small door handle can rotate around the rotating shaft.

[0010] Furthermore, the lock hook is provided with a hook mouth, the diameter of the hook mouth is consistent with the outer diameter of the protruding column, the inner wall width of the hook mouth is consistent with the column length of the protruding column, and when the lock hook rotates around the rotating axis to tighten and hook the protruding column or rotates back to force and release the protruding column, the inner wall of the hook mouth contacts and adheres to the outer peripheral surface of the protruding column and rotates one circle.

[0011] Furthermore, the handle base is fitted and mounted on a cabinet door of the ultra-low temperature refrigeration equipment, and the protruding column is perpendicular to the handle base and points to the fixing base.

[0012] Furthermore, the fixing seat includes a second folded edge portion and a second mounting edge portion which are integrally connected in an L-shaped structure. The fixing seat is mounted on another cabinet door of the ultra-low temperature refrigeration equipment via the second mounting edge portion, and a mounting hole is provided on the second mounting edge portion, and the rotating shaft is mounted in the mounting hole.

[0013] Furthermore, the lock hook, handle seat, fixing seat and rotating shaft are all made of stainless steel metal.

[0014] An ultra-low temperature refrigeration device comprises the small door handle.

[0015] The beneficial effects of the utility model are embodied in:

[0016] 1. In the utility model, the protruding column and the handle seat are integrally formed, the structure is strong and rust-resistant, the surface is smooth and seamless, and in a low temperature environment, frost can only condense on the surface of the protruding column, which is easy to clean later, has little effect on the normal operation of the small door buckle, and has little damage to its own structure.

[0017] 2. In the utility model, the lock hook and the small door handle are integrally formed, the structure is solid, rust-proof and corrosion-resistant, the appearance is smooth and flat, the lock hook and the protruding column are closely matched, and in the process of rotating the lock hook to lock or unlock, the frost on the outer peripheral surface of the protruding column can be scratched and removed through the rotation and tightening friction between the hook mouth and the protruding column, thereby avoiding the problem of damage or failure of the small door handle after long-term use in a low temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0019] Figure 1 It is a front structural axonometric diagram of an embodiment of the utility model.

[0020] Figure 2 It is a rear structural axonometric diagram of an embodiment of the utility model.

[0021] Figure 3 It is an exploded view of an embodiment of the utility model.

[0022] The components in the accompanying drawings are marked as follows: 1. small door handle; 2. handle seat; 3. fixed seat; 4. rotating shaft; 5. pull handle; 6. connecting piece; 601. first folded edge portion; 602. first mounting edge portion; 7. lock hook; 701. shaft hole; 702. hook mouth portion; 8. protruding column; 9. second folded edge portion; 10. second mounting edge portion; 1001. mounting hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B.

[0025] See also Figure 1-2 The embodiment of the utility model provides a small door handle, including a small door handle 1, a handle seat 2, a fixing seat 3 and a rotating shaft 4;

[0026] The small door handle 1 is fitted and clamped between the handle base 2 and the fixing base 3. A lock hook 7 is integrally formed on the small door handle 1. The lock hook 7 is a smooth, flat and solid hook structure. The rotating shaft 4 is installed on the fixing base 3. The lock hook 7 is hinged to the rotating shaft 4.

[0027] The handle base 2 is integrally formed with a protruding column 8, which is a smooth, seamless and solid cylindrical structure. The lock hook 7 has a movement range of rotating to tighten or rotating to force the protruding column 8 to release, thereby completing the locking or unlocking of the small door handle 1 and the handle base 2.

[0028] In the utility model, on the one hand, the protruding column and the handle seat are integrally formed, the structure is strong, rust-proof and corrosion-resistant, the surface is smooth and seamless, and in a low-temperature environment, frost can only condense on the surface of the protruding column, which is easy to clean later, has little impact on the normal operation of the small door handle, and causes less damage to its own structure; on the other hand, the lock hook and the small door handle are integrally formed, the structure is strong, rust-proof and corrosion-resistant, the surface is smooth and flat, and the lock hook and the protruding column are tightly matched. In the process of rotating the lock hook to lock or unlock, the frost on the outer peripheral surface of the protruding column can be scratched and removed through the rotation and tightening friction between the hook mouth and the protruding column, thereby avoiding the problem of damage or failure of the small door handle after long-term use in a low-temperature environment.

[0029] See also Figure 3 In this embodiment, the small door handle 1 includes a pull handle 5, a connector 6 and a lock hook 7 which are integrally connected. The connector 6 includes a first folded edge portion 601 and a first mounting edge portion 602 which are integrally connected in an L-shaped structure. The pull handle 5 is connected to the first folded edge portion 601 and is parallel to the plane where the first folded edge portion 601 is located. The lock hook 7 is connected to the first mounting edge portion 602 and is parallel to the plane where the first mounting edge portion 602 is located. With this design, the small door handle 1 is an L-shaped structure as a whole. The pull handle 5 and the first folded edge portion 601 are in the same plane, and the first mounting edge portion 602 and the lock hook 7 are in the same plane. In order to facilitate opening the cabinet door of the ultra-low temperature refrigeration equipment, the pull handle 5 can be embossed with printed patterns to increase friction, or holes can be provided to facilitate pulling. The specific method is not limited and will not be described one by one here.

[0030] See also Figure 3 In this embodiment, the lock hook 7 is provided with an axial hole 701, and the axial hole 701 is penetrated on the rotating shaft 4, and the small door handle 1 can rotate around the rotating shaft 4. With this design, pulling the handle 5 drives the small door handle 1 to rotate around the rotating shaft 4, so as to realize the rotational tightening and hooking or the rotational retraction and release between the lock hook 7 and the protruding column 8, that is, the locking or unlocking between the small door handle 1 and the handle base 2 is realized.

[0031] See also Figure 3In this embodiment, the lock hook 7 is provided with a hook opening 702, the diameter of the hook opening 702 is consistent with the outer diameter of the protruding column 8, and the inner wall width of the hook opening 702 is consistent with the column length of the protruding column 8. When the lock hook 7 rotates around the rotating shaft 4 to tightly hook or rotates to force the protruding column 8 to release, the inner wall of the hook opening 702 contacts and fits the outer peripheral surface of the protruding column 8 and rotates for one circle. With this design, since the protruding column 8 is a smooth, seamless and solid stainless steel cylinder, the frost is uniformly condensed on the outer surface of the protruding column 8. When the lock hook 7 rotates to lock or unlock, the hook opening 702 rotates and engages with the protruding column 8, and the frost on the outer peripheral surface of the protruding column 8 is effectively removed by the rotational tightening friction between the hook opening 702 and the protruding column 8.

[0032] See also Figure 1-2 In this embodiment, the handle base 2 is fitted on a cabinet door of the ultra-low temperature refrigeration equipment, and the protruding column 8 is perpendicular to the handle base 2 and points to the fixing base 3. With this design, in order to realize the rotation locking or unlocking of the lock hook 7, the handle base 2 and the fixing base 3 should be staggered. In this application, since the small door handle 1 is hinged on the fixing base 3 and the lock hook 7 faces backward, the handle base 2 should be located behind the fixing base 3.

[0033] See also Figure 3 In this embodiment, the fixing seat 3 includes a second folding edge portion 9 and a second mounting edge portion 10 which are integrally connected in an L-shaped structure. The fixing seat 3 is mounted on another cabinet door of the ultra-low temperature refrigeration equipment via the second mounting edge portion 10, and a mounting hole 1001 is provided on the second mounting edge portion 10, and the rotating shaft 4 is installed in the mounting hole 1001. With this design, the second folding edge portion 9 is vertical compared to the second mounting edge portion 10, which plays a role of avoiding the installation of the rotating shaft 4. In addition to the mounting hole 1001, the second mounting edge portion 10 also has an arc groove at the edge position, and the arc groove matches the column head of the protruding column 8, which plays a role of avoiding the protruding column 8;

[0034] When the small door handle 1 is rotated around the rotating axis 4 and locked in place, the inner wall surface of the connecting member 6 should be in contact with the outer wall surface of the fixing seat 3, so that the overall structure of the small door handle of the present application is more compact and stable.

[0035] See also Figure 1-3In this embodiment, the lock hook 7, handle seat 2, fixing seat 3 and rotating shaft 4 are all made of stainless steel. With this design, the small door handle of this application is mainly made of stainless steel. Even in a low temperature environment, the structure is still strong, rust-proof and corrosion-resistant. The pull handle 5 does not need to be made of metal to avoid frostbite of human hand skin under the effect of low temperature conduction.

[0036] The embodiment of the present invention further provides an ultra-low temperature refrigeration device, including the small door handle. With the small door handle, the ultra-low temperature refrigeration device, such as an ultra-low temperature refrigerator, can be used smoothly during opening or closing, with a good user experience, and the cabinet door can be locked and sealed.

[0037] In summary, in the present invention, on the one hand, the protruding column and the handle seat are integrally formed, the structure is strong, rust-resistant and corrosion-resistant, the surface is smooth and seamless, and in a low-temperature environment, frost can only condense on the surface of the protruding column, which is easy to clean later, has little effect on the normal operation of the small door handle, and has little damage to its own structure;

[0038] On the other hand, the lock hook and the small door handle are integrally formed with a solid structure that is rust-proof and corrosion-resistant, with a smooth and flat appearance. The lock hook and the protruding column fit tightly together, and during the process of the lock hook rotating to lock or unlock, the frost on the outer surface of the protruding column can be scratched and removed through the rotating and tightening friction between the hook mouth and the protruding column, thereby avoiding damage or failure of the small door handle after long-term use in a low-temperature environment.

[0039] It should be understood that the examples and implementation modes described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art may make various modifications or changes based on the examples and implementation modes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A small door handle, characterized in that: It comprises a small door handle (1), a handle seat (2), a fixing seat (3) and a rotating shaft (4); The small door handle (1) is fitted and clamped between the handle seat (2) and the fixing seat (3); a lock hook (7) is integrally formed on the small door handle (1); the lock hook (7) is a smooth, flat and solid hook structure; the rotating shaft (4) is mounted on the fixing seat (3); the lock hook (7) is hinged to the rotating shaft (4); The handle seat (2) is integrally formed with a protruding column (8), which is a smooth, seamless and solid cylindrical structure. The lock hook (7) has a movement stroke for rotating to tighten and hook or rotating to force and release the protruding column (8), thereby completing the locking or unlocking of the small door handle (1) and the handle seat (2).

2. The small door handle as claimed in claim 1, characterized in that: The small door handle (1) comprises a pull handle (5), a connecting piece (6) and a locking hook (7) which are integrally connected, the connecting piece (6) comprising a first folded edge portion (601) and a first mounting edge portion (602) which are integrally connected in an L-shaped structure, the pull handle (5) is connected to the first folded edge portion (601) and is parallel to the plane where the first folded edge portion (601) is located, and the locking hook (7) is connected to the first mounting edge portion (602) and is parallel to the plane where the first mounting edge portion (602) is located.

3. The small door handle as claimed in claim 1, characterized in that: The lock hook (7) is provided with an axial hole (701), the axial hole (701) is penetrated on the rotating shaft (4), and the small door handle (1) can rotate around the rotating shaft (4).

4. The small door handle as claimed in claim 1, characterized in that: The lock hook (7) is provided with a hook mouth (702), the diameter of the hook mouth (702) is consistent with the outer diameter of the protruding column (8), and the inner wall width of the hook mouth (702) is consistent with the column length of the protruding column (8). When the lock hook (7) rotates around the rotating shaft (4) to tightly hook or rotates back to release the protruding column (8), the inner wall of the hook mouth (702) contacts and adheres to the outer peripheral surface of the protruding column (8) and rotates one circle.

5. The small door handle as claimed in claim 1, characterized in that: The handle seat (2) is fitted and installed on a cabinet door of ultra-low temperature refrigeration equipment, and the protruding column (8) is perpendicular to the handle seat (2) and points to the fixing seat (3).

6. The small door handle as claimed in claim 1, characterized in that: The fixing seat (3) comprises a second folded edge portion (9) and a second mounting edge portion (10) which are integrally connected in an L-shaped structure; the fixing seat (3) is mounted on another cabinet door of the ultra-low temperature refrigeration equipment via the second mounting edge portion (10); and a mounting hole (1001) is provided on the second mounting edge portion (10), and the rotating shaft (4) is mounted in the mounting hole (1001).

7. The small door handle as claimed in claim 1, characterized in that: The locking hook (7), the handle seat (2), the fixing seat (3) and the rotating shaft (4) are all made of stainless steel.

8. An ultra-low temperature refrigeration device, characterized in that: It comprises a small door handle as described in any one of claims 1 to 7.

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