Hinge structure and blood purification apparatus

Abstract

The application discloses a hinged structure and a blood purification equipment, the hinged structure connects a first arm and a second arm through a hinge shaft, a rotating connecting arm of the first arm is connected with a second support through a first rotating shaft, a rotating connecting arm of the second arm is connected with a first support through a second rotating shaft, and the hinged connection of a first hinged device and a second hinged device is realized; the end of a sliding connecting arm of the first arm is slidably matched with a sliding slot hole of the first support through a first sliding shaft, and the end of a sliding connecting arm of the second arm is slidably matched with a sliding slot hole of the second support through a second sliding shaft, so that the sliding stroke of the sliding shaft is limited through the sliding slot hole, and the opening and closing position and the opening and closing degree of the first hinged device and the second hinged device are limited and controlled. The blood purification equipment adopts the above hinged structure, can position the opening and closing position and the opening and closing degree of a second shell relative to a first shell, and ensure that the second shell and the first shell are tightly and tightly jointed, and the outer surface of the hinge is smooth.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical connection structures and medical equipment, and in particular to a hinged structure and a blood purification device using the hinged structure. Background Art

[0002] Industrial design and application often involve hinged connection of two housings to form a container space that can be easily opened or closed. Currently, the hinged connection structure is a single-bearing structure. For example, in patent document CN218418778U, the hinged connection structure in the prior art is implemented using a hinge bolt, a lock nut, a first housing connector, and a second housing connector.

[0003] It can be seen that after the existing hinge structure hinges the first and second shells together, the hinge structure itself cannot determine the opening and closing position and the degree of opening. Instead, the opening and closing position and degree of opening can only be limited by the contact between the mating surfaces of the two shells when they are joined, or by the contact between the outer walls of the two shells when they are extended. Therefore, the existing hinge structure is not suitable for use in some precision equipment with high requirements for the opening and closing position and the degree of opening.

[0004] In addition, after the existing hinged structure hinges the first shell and the second shell, there will always be additional parts (such as nuts, bolts, shell connectors, etc.) exposed outside the shell, which will affect the external smoothness of the shell after hinged, especially for equipment with relatively high requirements for structural miniaturization, such as medical devices such as blood purification equipment. Part of the structure after hinged will be exposed on the outside of the blood purification equipment, which will cause safety hazards to the normal use of the blood purification equipment. Moreover, the blood purification equipment needs to be registered for medical purposes before it can be put on the market. The existing hinged structure used in the blood purification equipment will have the risk of not being successfully registered. Summary of the Invention

[0005] The first object of the present invention is to provide a hinge structure and a blood purification device using the hinge structure, wherein the hinge structure itself can determine the opening and closing position and opening and closing degree of two hinged components. The first object of the present invention is achieved by the following technical solutions:

[0006] The cam is connected to the second end of the hinged body, and the hinged body is connected to the hinged body by the hinged body to form a hinged body, and the hinged body is connected to the hinged body by the hinged body.

[0007] Preferably, the first bracket includes a first assembly part for connecting to the first hinged component and a pair of first support plates spaced apart on the inner side of the first assembly part, and the first support plate is provided with the rotating shaft hole and the slide slot hole of the first bracket; the second bracket includes a second assembly part for connecting to the second hinged component and a pair of second support plates spaced apart on the inner side of the second assembly part, and the second support plate is provided with the rotating shaft hole and the slide slot hole of the second bracket.

[0008] Preferably, the slide slot hole provided on the first bracket is an oblique slot hole, and is located on the outside of the rotating shaft hole provided on the first bracket relative to the hinge axis; the slide slot hole provided on the second bracket is an oblique slot hole, and is located on the outside of the rotating shaft hole provided on the second bracket relative to the hinge axis.

[0009] Preferably, the sliding connection arm and the rotating connection arm of each of the first arm and the second arm form an obtuse angle with each other.

[0010] Preferably, a clearance groove for the second arm to be fitted into is provided in the middle of the first arm, and the clearance groove provides a swing space for the second arm.

[0011] The above technical solution connects the first arm and the second arm through a hinge shaft, the rotating connecting arm of the first arm is connected to the second bracket through the first rotating shaft, and the rotating connecting arm of the second arm is connected to the first bracket through the second rotating shaft, thereby realizing a hinged connection between the first articulated component and the second articulated component; in addition, the end of the sliding connecting arm of the first arm is slidably engaged with the slide slot hole of the first bracket through the first sliding shaft, and the end of the sliding connecting arm of the second arm is slidably engaged with the slide slot hole of the second bracket through the second sliding shaft, so that the sliding stroke of the sliding shaft is limited by the slide slot hole, thereby realizing the limitation and control of the opening and closing position and opening degree of the first articulated component and the second articulated component.

[0012] The second object of the present application aims to provide a blood purification device capable of precisely controlling the hinging of a first shell and a second shell of the blood purification device.

[0013] The blood purification device comprises a first shell and a second shell hinged to the first shell; the first shell and the second shell are hinged through the hinging structure as described above; the first shell has a side end opening, the first support is connected to the inner wall of the bottom of the first shell, and the second support is connected to the inner wall of the bottom of the second shell.

[0014] Preferably, the first support is adjustably connected to the inner wall of the first shell, and / or the second support is adjustably connected to the inner wall of the second shell.

[0015] Preferably, the back surface of the second assembly part of the second support is provided with a positioning hole and a screw hole, and the inner wall of the second shell is provided with a positioning column and a screw column; when the second assembly part is connected to the second shell, the positioning hole and the positioning column are in butt joint, and the screw hole and the screw column are in alignment and locked through a screw.

[0016] Preferably, the edge of the inner wall of the bottom of the first shell is provided with a avoiding groove, and the second support has a blocking plate; when the second shell is in the closed state relative to the first shell, the blocking plate is blocked at the avoiding groove.

[0017] Preferably, the lower part of the inner side of the second shell is designed with a chamfered slope; when the second shell is opened or closed relative to the first shell, the chamfered slope of the lower part of the second shell leaves a gap with the lower part of the first shell.

[0018] The blood purification device of the above technical solution can position the opening and closing position and degree of the second shell relative to the first shell through the hinging structure as described above, and can ensure that the second shell and the first shell are tightly and tightly closed, and at the same time, the outer surface of the hinge is smooth and smooth. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The hinging structure provided for the embodiment of the present application is a perspective view.

[0020] Figure 2 The blood purification device provided for the embodiment of the present application is a perspective view.

[0021] Figure 3 The connection mode of the first support and the inner wall of the first shell of the hinging structure in the blood purification device provided for the embodiment of the present application is a schematic view.

[0022] Figure 4The connecting relationship of the hinged structure with the first shell and the second shell in a plan view when the second shell of the blood purification equipment is in the closed state.

[0023] Figure 5 The schematic diagram of the second support of the hinged structure in the blood purification equipment according to the embodiment of the present application.

[0024] Figure 6 The schematic diagram of the second support of the hinged structure in the blood purification equipment according to the embodiment of the present application.

[0025] Figure 7 The assembly relationship diagram of the second support of the hinged structure and the second shell in the blood purification equipment according to the embodiment of the present application.

[0026] Figure 8 The state diagram of the hinged structure when the second shell of the blood purification equipment is in the open state relative to the first shell.

[0027] Figure 9 The state diagram of the hinged structure when the second shell of the blood purification equipment is in the closed state relative to the first shell.

[0028] Figure 10 The bottom view of the blood purification equipment when the second shell is in the closed state relative to the first shell.

[0029] Figure 11 The cooperation relationship diagram of the inner lower part of the second shell and the outer lower part of the first shell when the second shell of the blood purification equipment is in the open state relative to the first shell.

[0030] Figure 12 The cooperation relationship diagram of the inner lower part of the second shell and the outer lower part of the first shell when the second shell of the blood purification equipment is in the closed state relative to the first shell. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. For the convenience of explanation, the present invention defines the orientations in conjunction with the accompanying drawings. The definitions of these orientations are intended to facilitate a clear description of the relative positional relationship and are not used to limit the actual orientation of the product or device during production, use, sales, etc. In addition, the terms "first" and "second" are only used for the purpose of distinguishing descriptions and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Furthermore, in the present invention, the plurality of refers to two or more, and the number meets the conventional settings and necessary settings in this field. In addition, unless otherwise clearly specified and limited, the terms "setting", "installation", "fixing" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral molding; the connection between the two can be a direct connection or an indirect connection through an intermediate medium; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] This embodiment first provides a hinged structure that can be widely used in various application scenarios where two shells are hinged, such as luggage, storage boxes, or any instrument or device involving two hinged shells, including the blood purification device described later in this embodiment. In addition, the hinged structure can be manufactured and sold as an independent product and can therefore be the subject of a separate patent claim.

[0033] like Figure 1 As shown, the hinge structure includes: a first arm 10, a second arm 20, a hinge shaft 30, a first rotating shaft 41, a second rotating shaft 42, a first sliding shaft 51, a second sliding shaft 52, a first bracket 60, and a second bracket 70. The first bracket 60 is used to connect to a first hinged component (e.g., a first housing), and the second bracket 70 is used to connect to a second hinged component (e.g., a second housing).

[0034] The first arm 10 includes a hinge portion 11, a sliding connecting arm 12, and a rotating connecting arm 13 extending left and right from the hinge portion 11. The second arm 20 includes a hinge portion 21, a sliding connecting arm 22, and a rotating connecting arm 23 extending left and right from the hinge portion 21. Both the hinge portion 11 of the first arm 10 and the hinge portion 21 of the second arm 20 are rotatably mounted on a hinge shaft 30.

[0035] The first bracket 60 includes a first assembly portion 61 and a pair of first support plates 62 spaced apart on the inner side of the first assembly portion 61 (the inner side here refers to the side facing the hinge shaft 30). The first assembly portion 61 is used to directly or indirectly connect to the first hinged component, and the pair of first support plates 62 are correspondingly provided with a rotating shaft hole 621 and a slide slot hole 622; the second bracket 70 includes a second assembly portion 71 and a pair of second support plates 72 spaced apart on the inner side of the second assembly portion 71 (the inner side here refers to the side facing the hinge shaft 30). The second assembly portion 71 is used to directly or indirectly connect to the second hinged component, and the pair of second support plates 72 are correspondingly provided with a rotating shaft hole 721 and a slide slot hole 722.

[0036] The distal end of the sliding connecting arm 12 of the first arm 10 is slidably engaged with the sliding slot hole 622 of the first bracket 60 via the first sliding shaft 51, and the distal end of the rotating connecting arm 13 of the first arm 10 is rotationally engaged with the rotating shaft hole 721 of the second bracket 70 via the first rotating shaft 41. The distal end of the sliding connecting arm 22 of the second arm 20 is slidably engaged with the sliding slot hole 722 of the second bracket 70 via the second sliding shaft 52, and the distal end of the rotating connecting arm 23 of the second arm 20 is rotationally engaged with the rotating shaft hole 621 of the first bracket 60 via the second rotating shaft 42.

[0037] In this embodiment, the slide slot 622 provided on the first bracket 60 is an oblique slot and is located outside the pivot hole 621 relative to the hinge axis 30. Similarly, the slide slot 722 provided on the second bracket 70 is an oblique slot and is located outside the pivot hole 721 relative to the hinge axis 30. Furthermore, the sliding connection arm and the pivot connection arm of the first arm 10 and the second arm 20, respectively, form an obtuse angle with each other. The magnitude of this obtuse angle, the inclination and length of the slide slot, and the spacing between the slide slot and the corresponding pivot hole are adaptively set based on the predetermined opening and closing position and degree of opening of the first and second articulated components.

[0038] Theoretically, as long as there is no interference during movement, the first arm 10 and the second arm 20 can be flexibly arranged, for example, they can be arranged side by side. In this embodiment, to save space and make the structure more stable, a clearance groove 101 is provided in the middle of the first arm 10 for the second arm to fit into. The clearance groove 101 provides swing space for the second arm 20. Specifically, the clearance groove 101 spans the sliding connecting arm 12 and the rotating connecting arm 13 of the first arm 10. The hinge portion 21 and the rotating connecting arm 23 of the second arm 20 can swing up and down within the clearance groove 101, and the end of the sliding connecting arm 22 of the second arm 20 extends outside the clearance groove 101.

[0039] The hinge structure provided in this embodiment connects the first arm 10 and the second arm 20 through the hinge shaft 30, and the rotating connecting arm 13 of the first arm 10 is connected to the second bracket 70 through the first rotating shaft 41, and the rotating connecting arm 23 of the second arm 20 is connected to the first bracket 60 through the second rotating shaft 42, thereby realizing the hinge connection between the first articulated component and the second articulated component; more importantly, the end of the sliding connecting arm 12 of the first arm 10 is slidingly engaged with the slide hole 622 of the first bracket 60 through the first sliding shaft 51, and the end of the sliding connecting arm 22 of the second arm 20 is slidingly engaged with the slide hole 722 of the second bracket 70 through the second sliding shaft 52, so that the sliding stroke of the sliding shaft can be limited by the corresponding slide hole, thereby realizing the limitation and control of the opening and closing position and opening degree of the first articulated component and the second articulated component.

[0040] Combine Figures 2 to 4 As shown, this embodiment also provides a blood purification device, including a first housing 80 (which is prior art and is also referred to as a middle housing in the industry) and a second housing 90 (which is prior art and is also referred to as a front housing in the industry). The second housing is hinged to the first housing via the hinge structure described above. It should be noted that the innovation of the present invention primarily relates to the hinged connection between the housings. The other functional components of the blood purification device 200 are prior art and will not be further described in this application.

[0041] The first housing 80 has a side opening 801, the first bracket 60 is connected to the bottom inner wall of the first housing 80, and the second bracket is connected to the lower inner wall of the second housing 90. Figure 3 and Figure 4 As shown, the first bracket 60 is fixedly connected to a positioning plate 81, and is then set on the inner wall of the first shell 80 through the positioning plate 81. A guide mechanism 82 is provided on the inner wall of the first shell 80, and the guide mechanism 82 guides the movement of the positioning plate 81 in the direction of approaching or moving away from the side opening 801. A strip assembly hole 811 is provided on the positioning plate 81, and the strip assembly hole 811 cooperates with the screw 812 to fix the positioning plate 81 to the inner wall of the first shell 80. At the same time, the distance between the positioning plate 81 and the side opening 801 can be adjusted by adjusting the relative position of the strip assembly hole 811 and the screw 812, so as to achieve precise assembly and adjustment of the first bracket 60.

[0042] See also Figures 5 to 7 As shown, the back of the second assembly portion 71 of the second bracket 70 is provided with a positioning hole 711 and a screw hole 712, and the inner wall of the second shell 90 is provided with a positioning column 901 and a screw column 902; when the second assembly portion 71 is connected to the second shell 90, the positioning hole 711 and the positioning column 901 are connected, and the screw hole 712 and the screw column 902 are aligned and locked by screws. The assembled structure is shown in FIG. Figure 7 .

[0043] In this embodiment, when the second housing 90 is opened or closed relative to the first housing 80, the first arm 10 and the second arm 20 of the hinge structure rotate relative to the hinge shaft 30, and the hinge shaft 30 can also move; thus, it can achieve good folding and stretching functions, which plays a key role in hiding the entire hinge structure within the housing. Figure 8 As shown, when the second housing 90 is in the open state relative to the first housing 80, the first sliding shaft 51 of the hinge structure slides to the end of the sliding slot hole 622 close to the rotation shaft hole 621, and the second sliding shaft 52 slides to the end of the sliding slot hole 722 close to the rotation shaft hole 721. Figure 9 As shown, when the second shell 90 is in a closed state relative to the first shell 80, the first sliding shaft 51 of the hinge structure slides to the end of the slide slot hole 622 away from the rotation shaft hole 621, and the second sliding shaft 52 slides to the end of the slide slot hole 722 away from the rotation shaft hole 721; at this time, the docking surfaces of the second shell 90 and the first shell 80 are tightly fitted, and no hinge structure is exposed outside.

[0044] Please refer to Figure 3 、 Figure 6 and Figure 10 As shown, a relief groove 802 is defined on the inner edge of the bottom wall of the first housing 80. A blocking plate 73 is connected to the lower ends of the pair of second support plates 72 of the second bracket 70. When the second housing 90 is closed relative to the first housing 80, the blocking plate 73 blocks the relief groove 802, ensuring that the outer surface of the first housing 80 remains smooth when the second housing 90 is closed relative to the first housing 80. The provision of the relief groove 802 allows the hinge structure to have a larger opening and closing angle, that is, it allows the second housing 90 to open at a larger angle relative to the first housing 80.

[0045] See also Figure 11 and Figure 12 The lower inner part of the second shell 90 is designed with a chamfered surface 905. When the second shell 90 and the first shell 80 are opened or closed, a gap will be left between the lower part of the second shell 90 and the lower part of the first shell 80. This can reserve a gap for the lower part of the second shell 90 to prevent the lower part of the second shell 90 from hitting the lower edge of the first shell 80 when the second shell 90 is rotated open or closed, thereby preventing interference and making the opening or closing process smoother.

[0046] The above embodiments are intended to fully disclose rather than limit the present invention. Any replacement of equivalent technical features that can be obtained based on the creative purpose of the present invention without creative work should be regarded as within the scope of the present invention.

Claims

1. A blood purification device, comprising a hinge structure, a first shell, and a second shell hinged to the first shell; the first shell and the second shell are hingedly connected by the hinge structure; the first shell has a side end opening; characterized in that The hinge structure includes: a first arm, a second arm, a hinge axis, a first rotating shaft, a second rotating shaft, a first sliding shaft, a second sliding shaft, a first bracket for connecting to the first hinged component, and a second bracket for connecting to the second hinged component; the first arm and the second arm each include a hinge portion and a sliding connecting arm and a rotating connecting arm extending to both sides from the hinge portion; the hinge portion of each of the first arm and the second arm is rotatably mounted on the hinge axis; the first bracket and the second bracket are both provided with a rotating shaft hole and a sliding slot hole, the end of the sliding connecting arm of the first arm is slidably fitted in the sliding slot hole of the first bracket through the first sliding shaft, and the end of the rotating connecting arm of the first arm is rotatably fitted in the rotating shaft hole of the second bracket through the first rotating shaft; the end of the sliding connecting arm of the second arm is rotatably fitted in the rotating shaft hole of the second bracket through the first rotating shaft; The second sliding shaft slidably fits in the sliding slot hole of the second bracket, and the end of the rotating connecting arm of the second arm rotatably fits in the rotating shaft hole of the first bracket through the second rotating shaft, the first bracket is connected to the bottom inner wall of the first shell, and the second bracket is connected to the lower part of the inner wall of the second shell; an avoidance groove is opened at the edge of the bottom inner wall of the first shell, and the second bracket includes a second assembly part for connecting to the second hinged component and a pair of second support plates arranged at intervals on the second assembly part, and a sealing baffle is connected to the lower end of the pair of second support plates; when the second shell is in a closed or open state relative to the first shell, the hinge shaft is located in the first shell; when the second shell is in a closed state relative to the first shell, the sealing baffle is blocked at the avoidance groove.

2. The blood purification device according to claim 1, characterized in that: The first bracket includes a first assembly portion for connecting to the first hinged component and a pair of first support plates arranged at intervals on the first assembly portion, and the first support plate is provided with the rotating shaft hole and the slide slot hole of the first bracket; the second support plate is provided with the rotating shaft hole and the slide slot hole of the second bracket.

3. The blood purification device according to claim 2, characterized in that: The slide slot hole provided on the first bracket is an oblique slot hole, and is located on the outside of the rotating shaft hole provided on the first bracket relative to the hinge axis; the slide slot hole provided on the second bracket is an oblique slot hole, and is located on the outside of the rotating shaft hole provided on the second bracket relative to the hinge axis.

4. The blood purification device according to claim 2 or 3, characterized in that: The sliding connection arm and the rotating connection arm of each of the first arm and the second arm form an obtuse angle with each other.

5. The blood purification device according to claim 4, characterized in that: A clearance groove for the second arm to be fitted and assembled is provided in the middle of the first arm, and the clearance groove provides a swing space for the second arm.

6. The blood purification device according to claim 1, characterized in that: The first bracket is adjustably connected to the inner wall of the first shell, and / or the second bracket is adjustably connected to the inner wall of the second shell.

7. The blood purification device according to claim 1 or 6, characterized in that: A positioning hole and a screw hole are provided on the back of the second assembly part of the second bracket, and a positioning column and a screw column are provided on the inner wall of the second shell; when the second assembly part is connected to the second shell, the positioning hole and the positioning column are docked, and the screw hole and the screw column are aligned and locked by screws.

8. The blood purification device according to claim 1 or 6, characterized in that: The lower inner portion of the second shell is designed with a chamfered surface. When the second shell and the first shell are opened or closed, a gap is left between the chamfered surface of the lower portion of the second shell and the lower portion of the first shell.

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