A handle system with a reinforced shaft and a vehicle-mounted refrigerator using the same

Abstract

The present invention provides a handle system with a reinforced shaft, which includes a handle grip portion, a handle base, and a reinforcement liner. The handle grip portion includes a first handle grip portion and a second handle grip portion arranged in parallel. A through handle reinforcement shaft is provided in the second handle grip portion. The handle base includes a left handle base and a right handle base. The left handle base and the right handle base are provided with handle grooves in the extending direction of the second handle grip portion for accommodating the end extension portion of the second handle grip portion, thereby forming the connection between the handle grip portion and the handle base. The handle reinforcement shaft extends into the handle groove. The reinforcement liner is fixedly connected to the handle base. The present invention balances the forces on the first handle base and the second handle base through the through handle reinforcement shaft, and conducts the forces to the reinforcement liner, enhancing the stability and strength of the handle.

Description

Technical Field

[0001] The present invention relates to a handle system with a reinforced shaft and a vehicle-mounted refrigerator using the same. Background Art

[0002] A vehicle-mounted refrigerator refers to a refrigeration and cold storage device that can be carried in a vehicle and is mostly used in scenarios such as self-driving tours and outdoor camping. The vehicle-mounted refrigerator greatly improves the quality of people's journeys. When traveling, the vehicle-mounted refrigerator can well preserve food, achieving a seamless connection from home to the destination, enabling people to enjoy a higher-quality life. Since the vehicle-mounted refrigerator needs to be frequently carried and is limited by the vehicle interior space, the material for preparing the vehicle-mounted refrigerator housing cannot be too heavy. However, if the housing material is not thick enough, material fatigue damage is likely to occur at high-stress parts, such as the handle area. In addition, the vehicle-mounted refrigerator usually uses a hinge system to connect the door body. Due to the fact that the material of the vehicle-mounted refrigerator housing cannot be too thick, the stress impact that the hinge area can withstand is limited. Especially when the door body is under a large accidental force in the open state, it will be damaged due to stress concentration in the hinge area, affecting the performance and use of the vehicle-mounted refrigerator. Summary of the Invention

[0003] In view of the above-mentioned defects in the prior art, the present invention proposes the following technical solutions, including the following embodiments:

[0004] Embodiment 1. A handle system with a reinforced shaft, comprising a handle grip portion, a handle base, and a reinforced liner fixedly connected to the handle base, characterized in that the handle grip portion comprises a first handle grip portion and a second handle grip portion arranged in parallel, the first handle grip portion and the second handle grip portion are fixedly connected to each other at the end, and a through handle reinforcing shaft is arranged in the second handle grip portion; the handle base comprises a left handle base and a right handle base respectively arranged at both ends of the handle grip portion, and the left handle base and the right handle base are provided with a handle groove in the extending direction of the second handle grip portion for accommodating the end extension of the second handle grip portion so as to form the connection between the handle grip portion and the handle base; the handle reinforcing shaft extends into the handle groove, thereby enhancing the connection between the handle grip portion and the handle base; the reinforced liner is fixedly connected to the left handle base and the right handle base.

[0005] Embodiment 2. The handle system according to Embodiment 1, characterized in that the handle grip portion is connected to the upper parts of the left handle base and the right handle base, and the end extension of the second handle grip portion accommodated in the handle groove is a detachable component;

[0006] The upper parts of the left handle base and the right handle base are provided with handle limiting devices, which limit the upward rotation of the first handle gripping part to the same vertical plane as the second handle gripping part, making the handle gripping part inclined relative to the vertical plane.

[0007] Embodiment 3. An in-vehicle refrigerator, which includes an inner wall of the heat preservation layer, an outer wall of the heat preservation layer, and a foaming layer arranged between the inner wall of the heat preservation layer and the outer wall of the heat preservation layer. It is characterized in that it further includes the handle system according to any one of Embodiments 1 to 2, wherein,

[0008] The handle base is arranged on the outer wall surface of the outer wall of the heat preservation layer, and the reinforcing liner is arranged on the inner wall surface of the outer wall of the heat preservation layer.

[0009] The reinforcing liner includes a reinforcing liner fixing part and a reinforcing liner extending part. The reinforcing liner fixing part is fixedly connected with the left handle base and the right handle base through the outer wall of the heat preservation layer, and the reinforcing liner extending part extends into the foaming layer.

[0010] Embodiment 4. The in-vehicle refrigerator according to Embodiment 3, characterized in that the reinforcing liner is not connected to the inner wall of the heat preservation layer.

[0011] Embodiment 5. The in-vehicle refrigerator according to Embodiment 3, characterized in that at least 2 / 3 of the reinforcing liner extending part extends into the area of the middle 1 / 3 of the heat preservation layer, and the main part of the width surface of the reinforcing liner extending part extends along the extending direction of the width surface of the outer wall of the heat preservation layer.

[0012] Embodiment 6. The in-vehicle refrigerator according to Embodiment 3, characterized in that the reinforcing liner extending part is provided with through holes, and the area of the through holes accounts for 1 / 6 to 2 / 3 of the area of the reinforcing liner extending part, used to reduce the weight of the reinforcing liner.

[0013] Embodiment 7. The in-vehicle refrigerator according to Embodiment 3, which includes a box body and a door body. A shaft body is arranged on the box body, and a shaft sleeve is arranged on the door body. A door shaft limiting device is arranged on the door body and / or the box body. It is characterized in that,

[0014] The outer surface of the shaft body includes a shaft body sliding contact surface and a shaft body rotating contact surface. Among them, the shaft body rotating contact surface coincides with the outer surface of the cylinder where the shaft body is located. The shaft body sliding contact surface includes two opposite parts on the shaft body, and the minimum distance (referred to as the minimum parallel tangent distance) between the parallel tangents of the shaft body in contact with the shaft body sliding contact surface is less than the diameter of the cylinder where the shaft body is located.

[0015] The bushing has an inner opening and a side opening. There are two opposite bushing sliding contact surfaces on the side opening for cooperating with the shaft body sliding contact surfaces; there is a bushing rotating contact surface on the inner opening for cooperating with the shaft body rotating contact surface. Thus, the shaft body can slide into or out of the bushing along the direction of the minimum parallel tangent via the side opening of the bushing, and the bushing rotating contact surface and the shaft body rotating contact surface cooperate with each other to realize the rotation of the shaft body within the bushing.

[0016] The bushing is made of a material with elastic deformation.

[0017] The door body and the box body are connected by the shaft body and the bushing. The door shaft limiting device restricts the rotation of the shaft body within the bushing when the door body is fully opened, and when the door body is fully opened:

[0018] The distance between the two opposite bushing sliding contact surfaces of the bushing when they undergo elastic deformation under the action of the gravity of the door body itself, the door shaft limiting device, and the interaction between the shaft body and the bushing is less than the diameter of the cylinder where the shaft body is located (L 0 +L G <d 轴 ), and the distance between the two opposite bushing sliding contact surfaces of the bushing when they undergo elastic deformation under the action of the force F on the door body, the door shaft limiting device, and the interaction between the shaft body and the bushing can be greater than or equal to the diameter of the cylinder where the shaft body is located (L 0 +L G+F ≥d 轴 ).

[0019] The reinforcing lining extension extends to the connection area between the door body and the box body, and the shaft body is fixed on the reinforcing lining.

[0020] Embodiment 8. The vehicle-mounted refrigerator according to Embodiment 7, characterized in that the material with elastic deformation is selected from polyethylene, polyvinyl chloride, polypropylene, polystyrene, ABS plastic, polycarbonate, nylon, polyurethane, polytetrafluoroethylene, polyethylene terephthalate.

[0021] Embodiment 9. The vehicle-mounted refrigerator according to Embodiment 7, characterized in that the force F acts on the distal end of the door body, and its magnitude is 5 - 30 Newtons.

[0022] Embodiment 10. The vehicle-mounted refrigerator according to Embodiment 7, characterized in that a bushing groove is formed at the side opening of the bushing to increase the elastic deformation size at the side opening.

[0023] Embodiment 11. The vehicle-mounted refrigerator according to Embodiment 7 is characterized in that the door hinge limiting device is arranged on the door body and / or the box body close to the rotation axis of the door body. When the door body is fully opened, the door body and the box body are abutted against each other through the door hinge limiting device. On the rotation plane of the door body when it is opened, the distance from the abutting position of the door body and the box body to the side opening is 1 / 20 to 1 / 5 of the width of the door body.

[0024] Embodiment 12. The vehicle-mounted refrigerator according to Embodiment 7 is characterized in that the sliding contact surface of the shaft body includes parallel planes or is mainly composed of one or more groups of parallel planes. The distance between the parallel planes is between 1 / 3 and 5 / 6 of the diameter of the cylinder where the shaft body is located, preferably between 2 / 5 and 2 / 3.

[0025] The technical effects of the present invention include: When the handle system is in use, whether the first handle holding part is stressed or the second handle holding part is stressed, the through handle reinforcing shaft can balance the stress on the left handle base and the right handle base, enhance the stability and strength of the handle, and through the fixedly connected handle base and the reinforcing liner, conduct the stress on the handle holding part to the thermal insulation layer, reduce and disperse the stress on the housing material at the handle, and avoid fatigue damage to the housing material at the handle. The present application also enables the shaft body to disengage from the shaft sleeve within the elastic deformation range of the shaft sleeve when the door body is subjected to a large accidental force in the fully opened state through the elastic deformation of the shaft sleeve, so that the door body and the box body are separated. Further, by fixing the shaft body to the reinforcing liner extending to the connection area of the door body and the box body, the stress on the shaft body can be conducted to the thermal insulation layer through the reinforcing liner, reduce and disperse the stress on the housing material in the door hinge area, avoid fatigue damage to the housing material, and extend the service life of the product. In addition, the technical solution of the present application also brings many other advantages, which will be described in detail in the specific embodiments. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present disclosure and do not limit the present disclosure.

[0027] Figure 1 It is an exploded view of the handle system described in Embodiment 1.

[0028] Figure 2 It is a front view (including partial section) of the handle system described in Embodiment 1.

[0029] Figure 3 It is a side view of the handle system described in Embodiment 1.

[0030] Figure 4 It is a sectional view of the handle system described in Embodiment 1.

[0031] Figure 5 It is a schematic diagram of the vehicle-mounted refrigerator described in Embodiment 2.

[0032] Figure 6 It is a side view of the area where the handle system of the vehicle-mounted refrigerator described in Embodiment 2 is set.

[0033] Figure 7 It is a top view of the area where the handle system of the vehicle-mounted refrigerator described in Embodiment 2 is set.

[0034] Figure 8 It is a schematic diagram of the enhanced liner of the vehicle-mounted refrigerator described in Embodiment 2.

[0035] Figure 9 It is a rear view (including a partial section) of the vehicle-mounted refrigerator described in Embodiment 3.

[0036] Figure 10 It is a side view of the vehicle-mounted refrigerator described in Embodiment 3.

[0037] Figure 11 It is Figure 10 a partial enlarged view within the dotted circle in

[0038] Figures 12 to 18 It is a schematic diagram of the door hinge system of the vehicle-mounted refrigerator described in Embodiment 3.

[0039] Figure 19 and Figure 20 It is a schematic diagram of the vehicle-mounted refrigerator described in Embodiment 4.

[0040] Reference numerals: 100 - handle system, 110 - handle gripping part, 111 - first handle gripping part, 112 - second handle gripping part, 1121 - end extension part of the second handle gripping part, 113 - handle reinforcement shaft, 120 - handle base, 121 - left handle base, 122 - right handle base, 123 - handle groove, 124 - handle limiting device, 130 - enhanced liner, 131 - enhanced liner fixing part, 132 - enhanced liner extension part, 133 - through hole;

[0041] 210 - inner wall of the insulation layer, 220 - outer wall of the insulation layer, 221 - outer wall surface, 222 - inner wall surface, 230 - foaming layer;

[0042] 31 - box body, 32 - door body, 33 - door hinge limiting device, 321 - at the distal edge of the door body, 331 - the place where the door body and the box body abut against each other, 300 - shaft body, 310 - shaft body sliding contact surface, 320 - shaft body rotating contact surface, 400 - shaft sleeve, 410 - inner opening, 411 - shaft sleeve rotating contact surface, 420 - side opening, 421 - shaft sleeve sliding contact surface, 422 - shaft sleeve flare, 423 - shaft sleeve groove. Detailed implementation manners

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are only a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0044] The terms used in this application have the meanings commonly understood by those skilled in the art, unless otherwise clearly defined or stated to the contrary.

[0045] This application provides a handle system with a reinforced shaft, including a handle grip portion, a handle base, and a reinforcement liner fixedly connected to the handle base. The handle grip portion includes a first handle grip portion and a second handle grip portion arranged in parallel. The first handle grip portion and the second handle grip portion are fixedly connected to each other at the ends. A through handle reinforcement shaft is provided inside the second handle grip portion. The handle base includes a left handle base and a right handle base respectively arranged at both ends of the handle grip portion. The left handle base and the right handle base are provided with a handle groove in the extending direction of the second handle grip portion for accommodating the end extension of the second handle grip portion, thereby forming the connection between the handle grip portion and the handle base. The handle reinforcement shaft extends into the handle groove, thereby strengthening the connection between the handle grip portion and the handle base. The reinforcement liner is fixedly connected to the left handle base and the right handle base.

[0046] The enhanced connection between the handle grip portion and the handle base enables the handle grip portion to rotate with the handle reinforcement shaft passing through and extending into the handle groove as the rotation axis. During use, whether the first handle grip portion is stressed or the second handle grip portion is stressed, the through handle reinforcement shaft can balance the forces on the left handle base and the right handle base, enhance the stability and strength of the handle, and through the reinforcement liner fixedly connected to the handle base, reduce and disperse the stress on the housing material at the handle, avoid fatigue damage to the housing material at the handle, and extend the service life of the product.

[0047] In some embodiments, the handle gripping portion is connected to the upper parts of the left handle base and the right handle base, and the end extension of the second handle gripping portion received in the handle groove is a detachable component; the upper parts of the left handle base and the right handle base are provided with a handle limiting device, which restricts the first handle gripping portion from rotating upward to the same vertical plane as the second handle gripping portion, so that the handle gripping portion is inclined relative to the vertical plane. Thus, when the handle system works, for example, when carrying by gripping the first handle gripping portion, the handle limiting device can abut against the end of the second handle gripping portion, so that the first handle gripping portion is inclined in the direction of the gripping force, which is convenient for gripping and carrying. The end extension of the second handle gripping portion received in the handle groove is a detachable component, which is convenient for the installation of the handle system. At the same time, when the handle gripping portion rotates with the handle strengthening shaft as the rotation axis, the detachable end extension of the second handle gripping portion can not rotate with the handle gripping portion in the handle groove, thereby reducing the rotation resistance in the groove and further enhancing the stability of the handle system. Since the handle gripping portion is connected to the handle base through the second handle gripping portion at the upper part of the handle base, the second handle gripping portion located at the upper part can be directly gripped to carry in a limited operation space without being interfered by the first handle gripping portion.

[0048] The present application also discloses a vehicle-mounted refrigerator, which includes an inner wall of the thermal insulation layer, an outer wall of the thermal insulation layer, a foaming layer provided between the inner wall of the thermal insulation layer and the outer wall of the thermal insulation layer, and further includes the handle system described above. Wherein, the handle base is arranged on the outer wall surface of the outer wall of the thermal insulation layer, and the reinforcing lining plate is arranged on the inner wall surface of the outer wall of the thermal insulation layer. The reinforcing lining plate includes a reinforcing lining plate fixing portion and a reinforcing lining plate extending portion. The reinforcing lining plate fixing portion is fixedly connected to the left handle base and the right handle base through the outer wall of the thermal insulation layer, and the reinforcing lining plate extending portion extends into the foaming layer.

[0049] In the present application, the inner wall of the thermal insulation layer and the outer wall of the thermal insulation layer are shells located on both sides of the thermal insulation layer respectively, and the thermal insulation layer is formed after the foaming glue is injected into the foaming layer and cured. In the present application, the thermal insulation layer, the foaming layer, and the foaming area have the same meaning when describing the components of the vehicle-mounted refrigerator.

[0050] In this application, a reinforcing structure is formed by arranging a reinforcing liner fixedly connected to the outer wall of the thermal insulation layer and extending into the foaming layer. Specifically, when the foaming adhesive cures within the foaming layer, the reinforcing liner is integrally embedded in the foaming area and bonded and cured. Since the fixing portion of the reinforcing liner is fixedly connected to the left handle base and the right handle base through the outer wall of the thermal insulation layer, the extending portion of the reinforcing liner extends into the foaming layer. When the handle system is in operation, the force applied to the handle gripping portion is conducted through the fixedly connected handle base and the reinforcing liner to the thermal insulation layer, which is equivalent to introducing the strength of the thermal insulation layer to the outer wall of the thermal insulation layer, thereby generating a reinforcing effect on the outer wall of the thermal insulation layer, avoiding fatigue damage to the housing material at the handle, and extending the service life of the product.

[0051] In some embodiments, the reinforcing liner is not connected to the inner wall of the thermal insulation layer. Such a structural design makes it more convenient to install the reinforcing liner on the one hand, as it only needs to be fixedly connected to the outer wall of the thermal insulation layer. On the other hand, it can prevent heat from being conducted through the reinforcing liner, ensuring that the thermal insulation effect is not affected.

[0052] In some embodiments, at least 2 / 3 of the extending portion of the reinforcing liner extends into the middle 1 / 3 area of the thermal insulation layer, and the main part of the width of the extending portion of the reinforcing liner extends along the width extending direction parallel to the outer wall of the thermal insulation layer. More of the reinforcing liner extends into the thermal insulation layer and maintains a certain distance from the outer wall of the thermal insulation layer, which can play a greater reinforcing role. The middle 1 / 3 area of the thermal insulation layer refers to the area located in the middle 1 / 3 in the thickness direction of the thermal insulation layer, so that the reinforcing liner maintains a certain distance from the inner wall of the thermal insulation layer, avoiding heat being conducted through the reinforcing liner to the inner wall of the thermal insulation layer, and thus not affecting the thermal insulation performance.

[0053] In some embodiments, the extending portion of the reinforcing liner is provided with through holes, and the area of the through holes accounts for 1 / 6 to 2 / 3 of the area of the extending portion of the reinforcing liner, which is used to reduce the weight of the reinforcing liner. By setting through holes in the reinforcing liner, the weight of the liner can be reduced while achieving substantially the same reinforcing effect. This is because although the area of the extending portion of the reinforcing liner decreases, the area "covered" by the entire reinforcing liner in the thermal insulation layer remains basically unchanged, so that while achieving the required reinforcing effect, the weight of the product is reduced.

[0054] In some embodiments, the vehicle-mounted refrigerator includes a box body and a door body. An axle body is provided on the box body, and a bushing is provided on the door body. A door axle limiting device is provided on the door body and / or the box body. The outer surface of the axle body includes an axle body sliding contact surface and an axle body rotating contact surface. Among them, the axle body rotating contact surface coincides with the outer surface of the cylinder where the axle body is located. The axle body sliding contact surface includes two opposite parts on the axle body. The minimum distance (referred to as the minimum parallel tangent distance) between the parallel tangents of the axle body in contact with the axle body sliding contact surface is less than the diameter of the cylinder where the axle body is located. The bushing has an inner opening and a side opening. There are two opposite bushing sliding contact surfaces on the side opening for cooperating with the axle body sliding contact surface; an inner bushing rotating contact surface is provided on the inner opening for cooperating with the axle body rotating contact surface. Thus, the axle body can slide into or out of the bushing through the side opening of the bushing along the direction of the minimum parallel tangent. The bushing rotating contact surface and the axle body rotating contact surface cooperate with each other to realize the rotation of the axle body in the bushing. The bushing is made of a material with elastic deformation. The door body and the box body are connected through the axle body and the bushing. The door axle limiting device limits the rotation of the axle body in the bushing when the door body is fully opened, and when the door body is fully opened: the distance between the two opposite bushing sliding contact surfaces of the bushing when they elastically deform under the action of the gravity of the door body itself, the door axle limiting device, the axle body and the bushing is less than the diameter of the cylinder where the axle body is located (L 0 +L G <d 轴 ), and the distance between the two opposite bushing sliding contact surfaces of the bushing when they elastically deform under the action of the force F on the door body, the door axle limiting device, the axle body and the bushing can be greater than or equal to the diameter of the cylinder where the axle body is located (L 0 +L G+F ≥d 轴 ). The reinforcing liner extension extends to the connection area between the door body and the box body, and the axle body is fixed on the reinforcing liner.

[0055] The cylinder where the shaft body described in the present application is a virtual cylinder, and the shaft body rotation contact surface coincides with at least part of the cylindrical surface of the virtual cylinder. The parallel tangents of the shaft body described in the present application refer to two parallel lines that are perpendicular to the extension direction of the shaft body (i.e. the direction of the rotation axis when the door axis system rotates) and are respectively in contact with two opposite shaft body sliding contact surfaces on the shaft body, and do not enter the shaft body. Among all the parallel tangents, the parallel tangent with the smallest distance between the two parallel lines is called the minimum parallel tangent, and this distance is the minimum parallel tangent distance. The present application defines the minimum parallel tangent distance of the shaft body as being less than the diameter of the cylinder where the shaft body is located, that is, at least one of the two parallel lines is in contact with the shaft body sliding contact surface inside the cylinder where the shaft body is located. When only one of the two parallel lines is in contact with the shaft body sliding contact surface inside the cylinder where the shaft body is located, the shaft body sliding contact surface corresponding to the other line coincides with a part of the shaft body rotation contact surface, that is, the other line is in contact with the outer surface of the cylinder where the shaft body is located.

[0056] In the present application, in order to form a matching relationship between the sliding contact surface of the sleeve and the sliding contact surface of the shaft body, and a matching relationship between the rotating contact surface of the sleeve and the rotating contact surface of the shaft body, the opening size of the side opening depends on the minimum parallel tangent distance, and the size of the inner opening depends on the diameter of the cylinder where the shaft body is located. The present application stipulates that the minimum parallel tangent distance of the shaft body is smaller than the diameter of the cylinder where the shaft body is located, that is, the opening size of the side opening is smaller than the size of the inner opening, so that the shaft body cannot escape after entering the sleeve and rotating a certain angle, thereby forming a stable connection. Only by rotating the shaft body sleeve back to the positional relationship at the moment when the shaft body enters the sleeve can the two be separated, thereby realizing the rapid disassembly and assembly of the door axis system (that is, an easy-to-disassemble door axis system). In the present application, the opening size of the side opening refers to the distance between the two relative sleeve sliding contact surfaces on the side opening when the sleeve has not undergone elastic deformation, and the size of the inner opening refers to the diameter of a virtual cylinder that at least partially overlaps with the arc of the sleeve rotating contact surface on the inner opening.

[0057] In this application, elastic deformation (also called elastic deformation) refers to the deformation of a material under the action of an external force. When the external force is removed, the deformation of the material disappears and completely returns to its original shape. The important feature of elastic deformation is its reversibility. The sleeve described in this application is made of a material with elastic deformation, so that the side opening expands due to elastic deformation when subjected to force, and the distance between the two relative sleeve sliding contact surfaces increases. When the external force is removed, the elastic deformation of the side opening disappears.

[0058] The door body and the box body are connected by the shaft body and the sleeve. The door shaft limiting device limits the rotation of the shaft body in the sleeve when the door body is fully opened. At this time, if the door body continues to be subjected to the force along the opening direction, the force of the door body is transmitted to the sleeve, and the side opening undergoes elastic deformation.

[0059] When the door body is fully opened, the elastic deformation of the side opening satisfies: L 0 +L G <d 轴 , at this time, the shaft body cannot be disengaged from the bushing.

[0060] When the door body is fully opened and the door body is subjected to a force F, the elastic deformation of the side opening can satisfy: L 0 +L G+F ≥d 轴 , at this time, the shaft body disengages from the bushing. After disengagement, the elastic deformation of the side opening disappears, and the distance between the two opposite sliding contact surfaces of the bushings on the side opening returns to L 0 +L G .

[0061] Among them, L 0 refers to the opening size of the side opening; L G refers to the elastic deformation size of the side opening under the action of the self-weight G of the door body when the door body is fully opened; L G+F refers to the elastic deformation size of the side opening under the combined action of the self-weight G of the door body and the external force F when the door body is fully opened; d 轴 refers to the diameter of the cylinder where the shaft body is located. The elastic deformation size in this application refers to the increased distance due to elastic deformation between the two opposite sliding contact surfaces of the bushings on the side opening when the side opening expands due to elastic deformation under force.

[0062] That is, when the door body is subjected to an external force, it can disengage within the elastic deformation range of the bushing, avoiding deformation or damage to the bushing and the adjacent door hinge area due to excessive force. Due to the reversibility of elastic deformation, this disengagement can be repeated. After the door body disengages, the shaft body can slide into the bushing along the direction of the minimum parallel tangent through the side opening of the bushing and form a stable connection.

[0063] In this application, further, by fixing the shaft body to the reinforcing lining plate extending to the connection area between the door body and the box body, the force on the shaft body can be conducted to the heat preservation layer through the reinforcing lining plate, reducing and dispersing the force on the shell material in the door hinge area, avoiding fatigue damage of the shell material, and extending the service life of the product.

[0064] The door hinge limiting device in this application only needs to satisfy restricting the rotation of the shaft body in the bushing when the door body is fully opened. It can be set on the door body, or on the box body, or on both the door body and the box body at the same time, or it can be the area where the door body and the box body are in contact with each other at the door hinge when the door body is fully opened. Those skilled in the art can reasonably select and set it.

[0065] As used in this application, "ejection" refers to the process in which the shaft body detaches from the bushing through the expanded side opening of the bushing within the elastic deformation range of the bushing. "Sliding in" or "entering" and "sliding out" refer to the process in which the shaft body and the bushing are connected and separated along the sliding contact surface of the bushing.

[0066] The shaft body in this application is made of rigid material. This application defines that "the reinforcing liner extension extends to the connection area between the door body and the box body, and the shaft body is fixed on the reinforcing liner", so that when the door body repeatedly ejects within the elastic deformation range of the bushing, the force on the shaft body can be transmitted to the thermal insulation layer through the fixedly connected reinforcing liner, reducing and dispersing the force on the shell material in the door hinge area, avoiding fatigue damage of the shell material, and prolonging the service life of the product.

[0067] In this application, the shaft body in the door hinge system is made of metal such as copper, iron or alloy. There is no limitation on the specific selection of the metal, as long as it can meet the needs of specific application scenarios. Those skilled in the art can make appropriate selections according to actual needs.

[0068] In some embodiments, the material with elastic deformation is selected from polyethylene, polyvinyl chloride, polypropylene, polystyrene, ABS plastic, polycarbonate, nylon, polyurethane, polytetrafluoroethylene, polyethylene terephthalate. In addition to having a sufficient elastic deformation size to allow the shaft body to eject from the side opening within the elastic deformation range of the bushing, the selection of the bushing material also needs to consider the ease of generating elastic deformation of the material, that is, the stress required for the material to generate unit elastic deformation under the action of external force. In engineering applications, the elastic modulus can be used to measure the ease of generating elastic deformation of the material. If the elastic modulus of the material is too large, too much external force is required for the bushing to eject, making it difficult to avoid excessive force on the connection area between the door body and the box body and causing damage. If the elastic modulus of the material is too small, the connection between the shaft body and the bushing is not stable enough, and the bushing may eject under the action of external force even when the door body is not fully opened, thus affecting the use. The material in this application can not only meet the requirement that the shaft body forms a sufficiently stable connection after sliding into the bushing and rotating a certain angle, but also enable the shaft body to eject from the side opening within the elastic deformation range of the bushing under the interaction of the door hinge limit device, the shaft body and the bushing when the door body is subjected to a large external force. Those skilled in the art can select materials with similar properties to these materials.

[0069] In some embodiments, the force F acts on the distal end of the door body, and its magnitude is 5 - 30 Newtons. Such a setting enables the door body to be disengaged under an appropriate acting force, facilitating the user to easily remove the door body without the aid of other tools. The distal end of the door body refers to the distal end relative to the rotation axis of the door body, that is, the area of the door body far from the rotation axis. In the plane of rotation of the door body, the distal end of the door body has a larger force arm relative to the proximal end of the door body. The force F acting on the distal end of the door body can cause elastic deformation at the side opening of the bushing and disengage the door body under the interaction of the door shaft limiting device, the shaft body, and the bushing.

[0070] In some embodiments, a bushing groove is provided at the side opening of the bushing, so that the elastic deformation dimension at the side opening is increased. Providing the bushing groove not only reduces the stress required for unit elastic deformation at the side opening of the bushing, but also increases the displacement at the side opening of the bushing within the same elastic deformation range, that is, increases the distance between the two relatively sliding contact surfaces of the bushing, thereby increasing the elastic deformation ability of the bushing and facilitating the use of materials with poor elastic deformation.

[0071] In some embodiments, the door shaft limiting device is provided on the door body and / or the box body close to the rotation axis of the door body. When the door body is fully opened, the door body and the box body are in mutual abutment through the door shaft limiting device. In the rotation plane of the door body when it is opened, the distance from the mutual abutment of the door body and the box body to the side opening is 1 / 20 to 1 / 5 of the door body width. The door body width refers to the dimension from the distal edge of the door body to the side opening. Since the door shaft limiting device is close to the rotation axis of the door body, the door body width is approximately equal to the distance from the distal edge of the door body to the mutual abutment of the door body and the box body. When the door body is fully opened, a lever is formed with the mutual abutment of the door body and the box body as the fulcrum between the side opening and the force application point of the force F on the door body. During the process of the door body continuing to be subjected to a force (driving force) along the opening direction and disengaging the shaft body from the bushing, the distance from the force application point of the door body to the mutual abutment of the door body and the box body is the driving arm of the lever. When the force (driving force) along the opening direction acts on the distal edge of the door body, the door body width is the driving arm of the lever, and the distance from the mutual abutment of the door body and the box body to the side opening is the resistance arm of the lever. The resistance acts on the side opening of the bushing and causes elastic deformation expansion of the side opening, increasing the distance between the two relatively sliding contact surfaces of the bushing and disengaging the shaft body from the bushing. Since the door body width is much larger than the distance from the mutual abutment of the door body and the box body to the side opening, a relatively small force acting on the distal end of the door body can, through the lever action, cause elastic deformation at the side opening of the bushing until the shaft body is disengaged.

[0072] In some embodiments, the sliding contact surface of the shaft body includes parallel planes, or is mainly composed of one or more sets of parallel planes. The distance between the parallel planes is between 1 / 3 and 5 / 6 of the diameter of the cylinder where the shaft body is located, preferably between 2 / 5 and 2 / 3. The shaft body sliding contact surface including planes can produce a smooth feel, especially when there are parallel planes, which can improve comfort.

[0073] In some embodiments, there is a flared bushing at the outside of the side opening of the bushing. The width of the flared bushing is greater than the distance between the two opposite sliding contact surfaces of the bushing. Thus, the shaft body can be guided into the side opening through the flared bushing, making the installation more convenient.

[0074] The above ranges can be used alone or in combination. Through the following embodiments, the present application can be more easily understood.

[0075] Embodiment

[0076] Embodiment 1

[0077] Referring to Figures 1 to 4 , this embodiment discloses a handle system 100 with a reinforced shaft, including a handle grip portion 110, a handle base 120, and a reinforcing liner 130 fixedly connected to the handle base.

[0078] The handle grip portion 110 includes a first handle grip portion 111 and a second handle grip portion 112 arranged in parallel. The first handle grip portion 111 and the second handle grip portion 112 are fixedly connected to each other at the end. A through handle reinforcing shaft 113 is provided inside the second handle grip portion 112; the handle base 120 includes a left handle base 121 and a right handle base 122 respectively arranged at both ends of the handle grip portion. The left handle base 121 and the right handle base 122 are provided with a handle groove 123 in the extending direction of the second handle grip portion 112 for accommodating the end extension portion of the second handle grip portion, thereby forming the connection between the handle grip portion 110 and the handle base 120; the handle reinforcing shaft 113 extends into the handle groove 123, thereby strengthening the connection between the handle grip portion 110 and the handle base 120; the reinforcing liner 130 is fixedly connected to the left handle base 121 and the right handle base 122.

[0079] The enhanced connection between the handle grip portion 110 and the handle base 120 enables the handle grip portion 110 to rotate about a handle reinforcement shaft 113 that penetrates and extends into the handle groove 123. In use, whether the first handle grip portion 111 or the second handle grip portion 112 is subjected to force, the force on the left handle base 121 and the right handle base 122 can be balanced through the penetrating handle reinforcement shaft 113, enhancing the stability and strength of the handle system 100. And through the reinforcement liner 130 fixedly connected to the handle base 120, the force on the housing material at the handle is reduced and dispersed, avoiding fatigue damage to the housing material at the handle and extending the service life of the product.

[0080] The handle grip portion 110 is connected to the upper parts of the left handle base 121 and the right handle base 122. The end extension 1121 of the second handle grip portion received in the handle groove 123 is a detachable component; handle limiting devices 124 are provided on the upper parts of the left handle base 121 and the right handle base 122 to limit the upward rotation of the first handle grip portion 111 to the same vertical plane as the second handle grip portion 112, causing the handle grip portion 110 to be inclined relative to the vertical plane (as Figure 3 shown). Thus, when the handle system 100 is working, for example, when carrying by gripping the first handle grip portion 111, the handle limiting device 124 can abut against the end of the second handle grip portion 112, causing the first handle grip portion 111 to be inclined in the direction of the gripping force, leaving a gripping space instead of abutting against the housing material, which is convenient for gripping and carrying. The end extension 1121 of the second handle grip portion received in the handle groove 123 is a detachable component, which is convenient for the installation of the handle system. At the same time, when the handle grip portion 110 rotates about the handle reinforcement shaft 113, the detachable end extension 1121 of the second handle grip portion can not rotate with the handle grip portion 110 in the handle groove 123, thereby reducing the rotational resistance in the handle groove 123 and further enhancing the stability of the handle system.

[0081] As Figure 4 shown, since the handle grip portion 110 is connected to the handle base 120 through the second handle grip portion 112 at the upper part of the handle base 120, it is possible to carry out handling within a limited operating space by directly gripping the upper second handle grip portion 112 without being interfered by the first handle grip portion 111.

[0082] Embodiment 2

[0083] Refer to Figures 5 to 8, this embodiment discloses a vehicle-mounted refrigerator, which includes an inner wall 210 of the heat preservation layer, an outer wall 220 of the heat preservation layer, a foaming layer 230 disposed between the inner wall 210 and the outer wall 220 of the heat preservation layer, and a handle system 100 respectively disposed on both sides of the vehicle-mounted refrigerator box body. The handle system 100 is the same as that in Embodiment 1.

[0084] The handle base 120 of the handle system 100 is disposed on the outer wall surface 221 of the outer wall 220 of the heat preservation layer. The reinforcing lining plate 130 is disposed on the inner wall surface 222 of the outer wall 220 of the heat preservation layer. The reinforcing lining plate 130 includes a reinforcing lining plate fixing portion 131 and a reinforcing lining plate extending portion 132. The reinforcing lining plate fixing portion 131 is fixedly connected to the left handle base 121 and the right handle base 122 through the outer wall 220 of the heat preservation layer. The reinforcing lining plate extending portion 132 extends to the middle 1 / 3 area of the foaming layer 230, and the main part of the width of the reinforcing lining plate extending portion 132 extends along the extending direction of the width of the outer wall 220 of the heat preservation layer. The reinforcing lining plate 130 is not connected to the inner wall 210 of the heat preservation layer and keeps a certain distance from the inner wall 210 of the heat preservation layer, which can avoid heat conduction through the reinforcing lining plate 130 and ensure that the heat preservation performance of the vehicle-mounted refrigerator is not affected. The reinforcing lining plate extending portion 132 is provided with through holes 133, and the area of the through holes 133 accounts for 1 / 3 of the area of the reinforcing lining plate extending portion 132, thereby reducing the weight of the reinforcing lining plate 130. At this time, although the area of the reinforcing lining plate extending portion 132 is reduced, the area "covered" by the entire reinforcing lining plate 130 in the foaming layer 230 remains basically unchanged, so as to reduce the product weight while playing the required strengthening role.

[0085] When the handle system 100 works, the force on the handle holding portion 110 is conducted to the foaming layer 230 through the fixedly connected handle base 120 and the reinforcing lining plate 130, and the strength of the foaming layer 230 is introduced onto the outer wall 220 of the heat preservation layer, thereby playing a strengthening role on the outer wall 220 of the heat preservation layer, avoiding fatigue damage of the shell material at the handle, and prolonging the service life of the product.

[0086] Embodiment 3

[0087] Referring to Figures 9 to 18 , this embodiment discloses a vehicle-mounted refrigerator, whose structure is basically the same as that of the vehicle-mounted refrigerator in Embodiment 2. It includes a box body 31, a door body 32 and a door shaft limiting device 33. Two shaft bodies 300 are disposed on the box body 31, two shaft sleeves 400 are disposed on the door body 32, the door shaft limiting device 33 is a protrusion disposed near the shaft sleeve 400 on the door body 32, and the box body 31 and the door body 32 are connected through two sets of the shaft bodies 300 and the shaft sleeves 400 disposed opposite to each other (such as Figure 9As shown), the door shaft limiting device 33 can abut against the upper edge of the box body 31 when the door body 32 is fully opened, thereby limiting the rotation of the shaft body 300 in the shaft sleeve 400.

[0088] Reference Figure 12 and Figure 13 The outer surface of the shaft body 300 includes a shaft body sliding contact surface 310 and a shaft body rotation contact surface 320, wherein the shaft body rotation contact surface 320 coincides with the outer surface of the cylinder where the shaft body is located ( Figure 13 The dotted line shows the cross section of the virtual cylinder), the diameter of the cylinder where the shaft body is located is 1.2 cm, the shaft body sliding contact surface 310 includes two mutually parallel planes opposite to each other on the shaft body 300, and the minimum distance between the parallel tangents of the shaft body in contact with the two shaft body sliding contact surfaces 310 is 0.9 cm (referred to as the minimum parallel tangent distance, Figure 13 The parallel tangents of the shaft body are shown), and the minimum parallel tangent distance is smaller than the diameter of the cylinder where the shaft body is located.

[0089] The sleeve 400 has an inner opening 410 and a side opening 420. The side opening 420 has two opposite sleeve sliding contact surfaces 421 for slidingly contacting with the shaft body. The inner opening 410 has a sleeve rotating contact surface 411 for cooperating with the shaft body rotating contact surface 320, so that the shaft body 300 can slide into or out of the sleeve 400 through the side opening 420 of the sleeve 400 along the direction of the minimum parallel tangent. The sleeve rotating contact surface 411 and the shaft body rotating contact surface 320 cooperate with each other to realize the rotation of the shaft body 300 in the sleeve 400. The outer side of the side opening 420 of the sleeve has a sleeve flare 422, the width of which is greater than the distance between the two opposing sleeve sliding contact surfaces 421, and the maximum width of the sleeve flare 422 is 1.5 cm, so that the shaft body 300 can be guided into the side opening 420 through the sleeve flare 422, making it easier to install. The difference between the opening size of the side opening and the minimum parallel tangent distance is less than 2 times the processing error, that is, the opening size of the side opening is slightly greater than 0.9 cm, so that the shaft body and sleeve are tightly matched.

[0090] The sleeve 400 is made of ABS plastic, an elastically deformable material, so that the side opening expands due to elastic deformation when subjected to force, and the distance between the two relative sleeve sliding contact surfaces increases. When the external force is removed, the elastic deformation of the side opening disappears.

[0091] The connection between the handle base of the handle system 100 and the reinforced lining is consistent with that of Embodiment 2. Figure 9, the enhanced liner extension extends to the connection area of the door body 32 and the box body 31, and the shaft body 300 provided on the box body 31 is fixed to the enhanced liner extension that extends to the door body and box body connection area. This enables the force on the shaft body to be conducted to the insulation layer through the enhanced liner, reducing and dispersing the force on the shell material in the door hinge area, avoiding fatigue damage to the shell material, and extending the service life of the product.

[0092] Refer to Figure 14 and Figure 15 , after the shaft body 300 slides into the shaft sleeve 400 and rotates a certain angle, a firm connection is formed ( Figure 15 The process of the shaft body sliding into the shaft sleeve from the side opening and the shaft sleeve rotating to form a firm connection is shown successively from left to right). Only by rotating the shaft body and shaft sleeve back to the position relationship at the moment when the shaft body enters the shaft sleeve can the two be separated. The vehicle-mounted refrigerator using this door hinge system can achieve rapid disassembly and assembly of the door body (i.e., an easily dismountable door hinge system). When the door body 32 is opened, the shaft sleeve 400 rotates around the shaft body 300. When rotated to a specific angle, the shaft body 300 slides out and the entire door body 32 can be removed, facilitating the removal of items inside the box, or quickly installing the door body 32 and forming a firm connection.

[0093] Refer to Figure 16 , when the door body is fully opened, the door body 32 abuts against the mutual abutment 331 of the door body and the box body located on the upper edge of the box body 31 through the door hinge limiting device 33, thereby restricting the rotation of the shaft body 300 within the shaft sleeve 400. At this time, the shaft sleeve 400 undergoes elastic deformation under the action of the gravity of the door body itself, the door hinge limiting device, the interaction between the shaft body and the shaft sleeve. The elastic deformation of the side opening satisfies: L 0 +L G <d 轴 , where L 0 is the opening size of the side opening, which is 0.9 cm, and d 轴 is the diameter of the cylinder where the shaft body is located, which is 1.2 cm. L G is the elastic deformation size of the side opening under the action of the self-gravity G of the door body. At this time, the shaft body cannot escape from the shaft sleeve.

[0094] Refer to Figure 17 and Figure 18 , when the door body is fully opened, the distance from the distal edge of the door body to the mutual abutment 331 of the door body and the box body is 40 cm (i.e., the width of the door body, not shown in the figure). The distance from the mutual abutment 331 of the door body and the box body to the side opening ( Figure 17The distance a) shown by the dashed line in the figure is approximately 1 / 15 of the width of the door body. At this time, if a force F of 30 N is applied at the distal edge of the door body along the opening direction of the door body, a lever is formed with the point of contact 331 where the door body and the box body abut against each other as the fulcrum between the side opening and the force application point of the force F on the door body. The force F acts on the side opening of the bushing through the lever, causing elastic deformation and expansion of the side opening. As shown in Figure 18 (a), the elastic deformation of the side opening can satisfy: L 0 +L G+F ≥d 轴 , where L G+F refers to the elastic deformation size of the side opening under the combined action of the self-weight G of the door body and the external force F when the door body is fully opened, that is, L G+F ≥0.3 cm. At this time, the door body can be disengaged within the elastic deformation range of the bushing, achieving the effect of "force-disengaging", so that the door body falls off the box body. While facilitating disassembly, it avoids irreversible deformation or damage to the bushing and the adjacent door shaft area due to excessive force. Due to the reversibility of elastic deformation, this disengagement can be carried out repeatedly. After the door body falls off, as shown in Figure 18 (b), the elastic deformation of the side opening disappears, and the opening size of the side opening returns to 0.9 cm. The shaft body can slide into the bushing along the direction of the minimum parallel tangent through the side opening of the bushing again and form a stable connection.

[0095] By arranging the handle and the door shaft on the reinforcing liner extending in the heat insulation layer, the on-vehicle refrigerator reduces and disperses the stress on the housing material at the handle and the door shaft area, avoids stress concentration during repeated handling of the on-vehicle refrigerator, or when the door shaft area is stressed and the door body falls off, avoids damage to the housing material, and prolongs the service life of the product.

[0096] Embodiment 4

[0097] Referring to Figure 19 and Figure 20 , this embodiment discloses an on-vehicle refrigerator connected by a detachable door shaft system, which includes a box body 31, a door body 32 and a door shaft limiting device 33, and its setting is the same as that in Embodiment 4. A plurality of bushing grooves 423 are also provided at the side opening of the bushing 400. The provision of the bushing grooves 423 not only reduces the stress required for unit elastic deformation at the side opening of the bushing, but also increases the displacement at the side opening of the bushing within the same elastic deformation range, that is, increases the distance between the two relatively sliding contact surfaces of the bushing, so that the elastic deformation size at the side opening increases, thereby increasing the elastic deformation ability of the bushing.

[0098] When the door body 32 is fully opened, the door body 32 abuts against the abutting portion 331 between the door body and the box body located at the upper edge of the box body 31 through the door shaft limiting device 33, thereby restricting the rotation of the shaft body 300 within the shaft sleeve 400. At this time, the shaft sleeve 400 undergoes elastic deformation under the action of the gravity of the door body itself, the door shaft limiting device, and the interaction between the shaft body and the shaft sleeve. The elastic deformation of the side opening satisfies: L 0 +L G <d 轴 where L 0 is the opening size of the side opening, which is 0.9 cm, and d 轴 is the diameter of the cylinder where the shaft body is located, which is 1.2 cm. L G is the elastic deformation size of the side opening under the action of the self-gravity G of the door body. At this time, the shaft body cannot escape from the shaft sleeve.

[0099] When the door body is fully opened, the distance from the distal edge 321 of the door body to the abutting portion 331 between the door body and the box body is 40 cm (i.e., the width of the door body). The distance from the abutting portion 331 between the door body and the box body to the side opening (refer to the distance a shown by the dotted line in Embodiment 3 Figure 17 is approximately 1 / 15 of the width of the door body. At this time, if a force F of 10 N is applied at the distal edge 321 of the door body along the door opening direction, a lever with the abutting portion 331 between the door body and the box body as the fulcrum is formed between the side opening and the force application point of the door body under the force F (i.e., the distal edge 321 of the door body). The force F acts on the side opening of the shaft sleeve through the lever, causing the side opening to undergo elastic deformation and expansion. The elastic deformation of the side opening can satisfy: L 0 +L G+F ≥d 轴 where L G+F refers to the elastic deformation size of the side opening under the combined action of the self-gravity G of the door body and the external force F when the door body is fully opened, that is, L G+F ≥0.3 cm. At this time, the door body can escape within the elastic deformation range of the shaft sleeve, achieving the effect of "escaping under force", so that the door body can be detached from the box body. While facilitating disassembly, it avoids irreversible deformation or damage to the shaft sleeve and the adjacent door shaft area due to excessive force. Due to the reversibility of elastic deformation, this escape can be repeated. After the door body is detached, the elastic deformation of the side opening disappears, the opening size of the side opening returns to 0.9 cm, and the shaft body can slide into the shaft sleeve along the direction of the minimum parallel tangent through the side opening of the shaft sleeve and form a stable connection.

[0100] The above is only an exemplary embodiment of the present disclosure, and is not used to limit the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. An in-vehicle refrigerator with a handle system, the handle system comprising a handle grip portion, a handle base, and a reinforcing liner fixedly connected to the handle base, wherein, the handle grip portion comprises a first handle grip portion and a second handle grip portion arranged in parallel, the first handle grip portion and the second handle grip portion are fixedly connected to each other at the ends, and a through handle reinforcing shaft is arranged in the second handle grip portion; the handle base comprises a left handle base and a right handle base respectively arranged at two ends of the handle grip portion, and a handle groove is arranged on the left handle base and the right handle base in the extending direction of the second handle grip portion for accommodating an end extension portion of the second handle grip portion so as to form the connection between the handle grip portion and the handle base; the handle reinforcing shaft extends into the handle groove, thereby enhancing the connection between the handle grip portion and the handle base; the reinforcing liner is fixedly connected to the left handle base and the right handle base, the in-vehicle refrigerator comprises a box body, a door body and the handle system, a shaft body is arranged on the box body, a shaft sleeve is arranged on the door body, and a door shaft limiting device is arranged on the door body and / or the box body. The outer surface of the shaft body comprises a shaft body sliding contact surface and a shaft body rotating contact surface. Among them, the shaft body rotating contact surface coincides with the outer surface of the cylinder where the shaft body is located, and the shaft body sliding contact surface comprises two opposite parts on the shaft body. The minimum distance between the parallel tangents of the shaft body in contact with the shaft body sliding contact surface, that is, the minimum parallel tangent distance, is smaller than the diameter of the cylinder where the shaft body is located, the shaft sleeve has an inner opening and a side opening, and two opposite shaft sleeve sliding contact surfaces are arranged on the side opening for cooperating with the shaft body sliding contact surface; a shaft sleeve rotating contact surface is arranged on the inner opening for cooperating with the shaft body rotating contact surface, so that the shaft body can slide into or out of the shaft sleeve through the side opening of the shaft sleeve along the direction of the minimum parallel tangent, and the shaft sleeve rotating contact surface and the shaft body rotating contact surface cooperate with each other to realize the rotation of the shaft body in the shaft sleeve.

2. The in-vehicle refrigerator according to claim 1, wherein, the handle grip portion is connected to the upper parts of the left handle base and the right handle base, and the end extension portion of the second handle grip portion accommodated in the handle groove is a detachable component; handle limiting devices are arranged on the upper parts of the left handle base and the right handle base to limit the first handle grip portion from rotating upwards to the same vertical plane as the second handle grip portion, so that the handle grip portion is inclined relative to the vertical plane.

3. The in-vehicle refrigerator according to claim 1, which comprises an inner wall of the heat preservation layer, an outer wall of the heat preservation layer, and a foaming layer arranged between the inner wall of the heat preservation layer and the outer wall of the heat preservation layer, wherein, the handle base is arranged on the outer wall surface of the outer wall of the heat preservation layer, and the reinforcing liner is arranged on the inner wall surface of the outer wall of the heat preservation layer, The enhanced liner includes an enhanced liner fixing part and an enhanced liner extending part. The enhanced liner fixing part is fixedly connected to the left handle base and the right handle base through the outer wall of the heat insulation layer, and the enhanced liner extending part extends into the foaming layer.

4. The vehicle-mounted refrigerator according to claim 3, characterized in that the enhanced liner is not connected to the inner wall of the heat insulation layer.

5. The vehicle-mounted refrigerator according to claim 3, characterized in that at least 2 / 3 of the enhanced liner extending part extends into the area of the middle 1 / 3 of the heat insulation layer, and the main part of the width of the enhanced liner extending part extends along the width extending direction parallel to the outer wall of the heat insulation layer.

6. The vehicle-mounted refrigerator according to claim 3, characterized in that the enhanced liner extending part is provided with through holes, and the area of the through holes accounts for 1 / 6 to 2 / 3 of the area of the enhanced liner extending part, which is used to reduce the weight of the enhanced liner.

7. The vehicle-mounted refrigerator according to claim 1, characterized in that the shaft sleeve is made of a material with elastic deformation, the door body and the box body are connected through the shaft body and the shaft sleeve, and the door shaft limiting device limits the rotation of the shaft body in the shaft sleeve when the door body is fully opened, and when the door body is fully opened: the distance between the two opposite shaft sleeve sliding contact surfaces of the shaft sleeve when elastic deformation occurs under the action of the gravity of the door body itself, the door shaft limiting device, the shaft body and the shaft sleeve is less than the diameter of the cylinder where the shaft body is located, and the distance between the two opposite shaft sleeve sliding contact surfaces of the shaft sleeve when elastic deformation occurs under the action of the force F on the door body, the door shaft limiting device, the shaft body and the shaft sleeve can be greater than or equal to the diameter of the cylinder where the shaft body is located, the enhanced liner extending part extends to the connection area between the door body and the box body, and the shaft body is fixed on the enhanced liner.

8. The vehicle-mounted refrigerator according to claim 7, characterized in that the material with elastic deformation is selected from polyethylene, polyvinyl chloride, polypropylene, polystyrene, ABS plastic, polycarbonate, nylon, polyurethane, polytetrafluoroethylene, polyethylene terephthalate.

9. The vehicle-mounted refrigerator according to claim 7, characterized in that the force F acts on the distal end of the door body, and its magnitude is 5 - 30 Newtons.

10. The vehicle-mounted refrigerator according to claim 1, characterized in that a shaft sleeve groove is opened at the side opening of the shaft sleeve, so that the elastic deformation size at the side opening is increased.

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