Endoscope host shell assembly structure and assembly method

Abstract

The invention provides an endoscope main machine shell assembling structure and method, and relates to the technical field of endoscopes, the assembling structure comprises a lower shell, an upper shell and an alignment limiting structure, the lower shell comprises a bottom plate, a rear side plate connected to one end of the bottom plate and a front side plate connected to the other end of the bottom plate, and a bent supporting plate is arranged at the top of the rear side plate; a limiting bayonet is formed in the top of the front side plate, and the bent supporting plate and the limiting bayonet are located in the same plane; the upper shell comprises a top plate and side plates connected to the two sides of the top plate. The alignment limiting structure is connected to the bottom surface of the top plate; the lower shell and the upper shell are connected in a sliding mode, when the lower shell and the upper shell slide at the initial sliding position, the alignment limiting structure makes contact with the bending supporting plate, and when the lower shell and the upper shell slide at the tail sliding position, the alignment limiting structure is inserted into the limiting bayonet. According to the invention, repeated adjustment of the positions of the shells caused by position offset during assembly is avoided, the assembly time of the shells is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application provides an endoscope main machine shell assembly structure and an assembly method, and belongs to the technical field of endoscopes. BACKGROUND

[0002] An endoscope main machine refers to an endoscope cold light source main machine, an endoscope camera system main machine, and an endoscope image processor main machine, and the endoscope main machine adopts a design structure of "an external shell + an internal functional module". During assembly, the internal functional module is first fixed in a shell with an opening, and then the shell opening is closed by a cover plate to complete shell assembly.

[0003] In order to facilitate the installation of the functional module, some manufacturers design a split shell. For example, the patent with the announcement number CN221013220U provides an endoscope light source device and an endoscope camera system, and the box structure includes a first side wall body, a second side wall body, a bottom plate, a front shell, and the like. This design is conducive to installing components such as heat dissipation mechanisms on the wall body. However, the side wall body assembly process of such a box is relatively cumbersome, resulting in long assembly time and low production efficiency.

[0004] In order to improve the shell assembly efficiency, some manufacturers optimize the structure design: one is to adopt a U-shaped shell structure, such as the patent with the announcement number CN221264278U, which provides a U-shaped bottom shell and an envelope cover plate. This structure improves the disassembly and assembly efficiency by designing a pressed edge envelope buckle at the connection. The other is to design a guide structure, such as the patent with the publication number CN214311562U. The upper cover and the lower cover of the main machine box can be precisely positioned through the support feet, the guide groove, and the guide part, thereby improving the assembly efficiency.

[0005] Although the above designs improve the shell assembly efficiency, there are still problems of long assembly time and low production efficiency due to the complex structure of the shell itself and the excessive assembly structure and reinforcing members. SUMMARY

[0006] In order to solve the problems in the prior art, the application provides an endoscope main machine shell assembly structure and an assembly method, which can reduce the assembly time of the shell and improve the production efficiency.

[0007] Further, the purpose of the application is to design a simple shell structure, which can reduce the assembly time of the shell on the one hand and ensure the structural strength of the shell on the other hand.

[0008] In order to achieve the above-mentioned purposes, the application adopts the following technical solutions: In a first aspect, the present application provides an endoscope main shell assembly structure, comprising a lower shell, an upper shell and an alignment limiting structure, the lower shell comprising a bottom plate, a rear side plate connected to one end of the bottom plate and a front side plate connected to the other end of the bottom plate, the top of the rear side plate being provided with a bent support plate, the top of the front side plate being provided with a limiting socket, the bent support plate and the limiting socket being in the same plane; the upper shell comprising a top plate and side plates connected to both sides of the top plate; the alignment limiting structure is connected to the bottom surface of the top plate; the lower shell and the upper shell are slidingly connected, when the initial position of sliding, the alignment limiting structure is in contact with the bent support plate, when the end position of sliding, the alignment limiting structure is inserted into the limiting socket.

[0009] Preferably, in order to provide a simple structure of the upper shell and the lower shell mechanism, the upper shell and the lower shell in the present application are designed in the form of U-shaped structure, that is, the two side plates in the upper shell are parallel, the top plate is perpendicular to the two side plates, the rear side plate and the front side plate of the lower shell are parallel, and the bottom plate is perpendicular to the rear side plate and the front side plate.

[0010] Preferably, the upper shell and the lower shell are made by one-piece forming manufacturing process. Specifically, the upper shell and the lower shell are formed by bending a whole plate, that is, by bending a whole plate to form the upper shell and the lower shell.

[0011] Preferably, the upper shell and the lower shell are made of metal material, such as stainless steel, copper alloy, etc. The shell made of metal material can play the role of electromagnetic shielding to prevent the influence of magnetic field on the internal functional components (electronic components).

[0012] In a specific scheme, the left side of the rear side plate, the left side of the bottom plate and the left side of the front side plate are in the same plane, and the right side of the rear side plate, the right side of the bottom plate and the right side of the front side plate are in the same plane; when the lower shell and the upper shell slide, the side plate is attached to the left and right end faces of the rear side plate, or the side plate is attached to the left and right end faces of the bottom plate, or the side plate is attached to the left and right end faces of the front side plate.

[0013] When the lower shell and the upper shell slide, the side plate is first attached to the left and right end faces of the rear side plate, then to the left and right end faces of the bottom plate, and finally to the left and right end faces of the front side plate.

[0014] In the present application, the rear side plate, the front side plate and the bottom plate of the lower shell are coplanar on the left and right sides, forming a regular side reference plane; the side plates on the left and right sides of the upper shell slide in conjunction with the reference plane, and the guidance of the middle alignment limiting structure forms a three-dimensional alignment system of "two sides + middle". Compared with single middle guidance, the two sides fit can limit the relative deviation of the upper and lower shells in the left and right directions, avoid the inclination or misplacement caused by single side stress during sliding, ensure the uniqueness of the assembly path from multiple dimensions, make the alignment more accurate and stable, and make the assembly of the upper and lower shells more efficient.

[0015] In one specific embodiment, the alignment limiting structure is located in the middle part of the top plate, and the bending support plate is located in the middle part of the rear side plate; the width of the alignment limiting structure and the width of the bending support plate are matched, and the middle lines of the two widths coincide.

[0016] Preferably, the width of the alignment limiting structure and the width of the bending support plate are matched, which means that the width of the bending support plate and the width of the alignment limiting structure are basically the same. The width of the bending support plate can be larger than the width of the alignment limiting structure, but the maximum difference is not more than 5mm. This design makes it easier to align the alignment limiting structure and the bending support plate, and the unilateral allowance is controlled within 2.5mm, which can ensure the accuracy during movement.

[0017] In the present application, the alignment limiting structure and the bending support plate are located in the middle part of the respective components, and the width is matched and the middle lines coincide. In the initial stage of assembly, the alignment of the upper and lower shells can be realized only by the alignment of the alignment limiting structure and the bending support plate, without the need for additional adjustment of the left and right direction positions, i.e. without the need for alignment of the side plates on the left and right sides, which greatly shortens the adjustment time of the initial alignment and makes the assembly more efficient.

[0018] In one specific embodiment, the top end of the rear side plate is connected with a bending plate, and the bending plate is perpendicular to the rear side plate; the bending plate is located on both sides of the bending support plate, and the horizontal height of the bending plate is higher than that of the bending support plate, and a limiting area is formed between the bending plates on both sides and the bending support plate. When sliding to the initial position, the alignment limiting structure is located in the limiting area.

[0019] It should be noted that in the present application, the bending support plate is perpendicular to the rear side plate, i.e. the bending support plate is parallel to the bending plate.

[0020] Preferably, the bending plate, the bending support plate and the rear side plate are integrally bent and formed, i.e. the lower shell is made by bending a whole metal plate.

[0021] The bottom surface of the limiting area is the bending support plate, the side surface of the limiting area is the wall of the rear side plate, i.e. the height difference between the bending support plate and the bending plate, and the top end of the limiting area is not blocked. This design facilitates the alignment limiting structure to enter the limiting area and facilitates the alignment limiting structure to align the bending support plate.

[0022] In one specific embodiment, a reinforcing rib is further included, one end of the reinforcing rib is connected with the top end of the rear side plate, and the other end is connected with the top end of the front side plate; the reinforcing rib is arranged along the length direction of the bottom plate.

[0023] The reinforcing rib is arranged along the sliding direction of the upper shell.

[0024] Preferably, the connection of the reinforcing rib can adopt screw connection, facilitating the installation and disassembly of the reinforcing rib and the rear side plate and the front side plate.

[0025] The reinforcing rib is arranged along the length direction of the bottom plate, that is, the reinforcing rib connects the top end of the rear side plate and the front side plate along the sliding direction, strengthens the rigidity of the lower shell frame structure, effectively suppresses the deformation of the rear side plate and the front side plate under the assembly stress, makes the relative position and coplanarity of the bent support plate and the limiting socket more stable, and ensures that the cooperation between the alignment limiting structure and the two is always accurate, thereby maintaining the consistency of the alignment accuracy from the root cause.

[0026] The arrangement of the reinforcing rib not only can strengthen the rigidity of the lower shell frame structure, but also can improve the assembly efficiency between the upper shell and the lower shell. Specifically, due to the heavy weight of the shell made of metal material, the top plate of the U-shaped upper shell may be inclined downward (under the action of gravity) without support during the assembly process, which causes the alignment limiting structure on the bottom surface of the top plate to be misaligned with the limiting socket. The connection of the reinforcing rib at the top end of the rear side plate and the front side plate can make the upper shell more smoothly slide along the preset track from the initial alignment position to the end locking position, improve the operation continuity of the rapid assembly, and improve the assembly efficiency.

[0027] In one specific scheme, the top end of the rear side plate and the top end of the front side plate are both connected with a bent plate, the bent plate is perpendicular to the rear side plate and the front side plate, and the bent plate on the rear side plate and the bent plate on the front side plate are in the same plane; one end of the reinforcing rib is connected with the bent plate on the rear side plate, and the other end is connected with the bent plate on the front side plate.

[0028] The installation of the reinforcing rib and the bent plate can be realized by screws or bolts, and in the application, the installation is preferably realized by screws. Specifically, a through hole is preferably arranged on the bent plate, and a thread is arranged on the reinforcing rib. At this time, the screw can be tightened from top to bottom. If a thread is arranged on the bent plate and a through hole is arranged on the reinforcing rib, the screw needs to be screwed from the side of the reinforcing rib. In order to prevent the reinforcing rib from exceeding the range of the shell, the reinforcing rib can only be placed between the bent plate and the bottom plate, and the screw needs to be screwed from bottom to top, which has low operability.

[0029] Through the above arrangement, the reinforcing rib can be arranged horizontally, and the guiding effect on the upper shell can be ensured.

[0030] In one specific scheme, the rear end surface of the top plate and the rear end surface of the side plate are both connected with a rear baffle, and the rear baffle is perpendicular to the top plate and the side plate, respectively.

[0031] Preferably, the rear baffle and the top plate and the side plate are made by bending. By arranging the rear baffle, the upper shell can be limited. When the upper shell is in the sliding end position, the rear baffle and the rear side plate are in contact, and the rear side plate effectively limits the continuous sliding of the upper shell, so that the upper shell can be prevented from sliding excessively.

[0032] In one specific scheme, the bottom end surface of the side plate is connected with a lower baffle plate, which is perpendicular to the side plate; the lower baffle plate is provided with a through hole, and the bottom plate is provided with a screw hole matched with the through hole; in the sliding end position, the screw is connected into the screw hole through the through hole.

[0033] The screw connection can ensure the stable fixation between the upper shell and the lower shell. The sliding connection of the upper shell and the lower shell improves the assembly efficiency, and the screw fixation ensures the reliable connection of the upper shell and the lower shell after assembly, and the screw is arranged only at the lower baffle plate, so that the assembly point is not present in the overall appearance structure of the shell.

[0034] In one specific scheme, the alignment limiting structure comprises a connecting plate, a transition plate and a limiting plate; the connecting plate is connected to the bottom surface of the top plate, the limiting plate is connected through the transition plate and the connecting plate, and the limiting plate is parallel to the top plate; at least a part of the limiting plate is located outside the upper shell, in the sliding initial position, the limiting plate is in contact with the bent support plate, and in the sliding end position, the limiting plate is inserted into the limiting socket.

[0035] It is worth noting that at least a part of the limiting plate is located outside the upper shell, that is, at least a part of the limiting plate is exposed outside the upper shell, which has the advantage that the limiting plate and the bent support plate can be contacted and aligned conveniently and intuitively during assembly, thereby improving the assembly efficiency.

[0036] In the second aspect, the application provides an endoscope main machine, which comprises the main machine shell assembly structure according to any one of the first aspect.

[0037] In the third aspect, the application provides an assembly method based on the main machine shell assembly structure according to any one of the first aspect, which comprises the following steps: adjusting the position of the upper shell so that the opening of the upper shell is opposite to the opening of the lower shell; adjusting the angle of the upper shell so that the top plate of the upper shell is parallel to the bottom plate of the lower shell; controlling the movement of the upper shell so that the limiting plate is aligned with the bent support plate; and controlling the relative movement of the upper shell and the lower shell so that the limiting plate is inserted into the limiting socket.

[0038] In one preferred scheme, the specific steps of the assembly method are as follows: step one, adjusting the position of the upper shell so that the opening of the upper shell is opposite to the opening of the lower shell; step two, adjusting the angle of the upper shell so that the top plate of the upper shell is parallel to the bottom plate of the lower shell; step three, controlling the movement of the upper shell so that the limiting plate is aligned with the bent support plate; and step four, controlling the relative movement of the upper shell and the lower shell so that the limiting plate is inserted into the limiting socket.

[0039] In another preferred scheme, the specific steps of the assembling method are: step one: adjusting the position of the upper shell so that the opening of the upper shell is opposite to the opening of the lower shell; step two: controlling the movement of the upper shell so that the limiting plate is aligned with the bent support plate; step three: adjusting the angle of the upper shell so that the top plate of the upper shell is parallel to the bottom plate of the lower shell; and step four: controlling the relative movement of the upper shell and the lower shell to insert the limiting plate into the limiting slot.

[0040] It should be noted that the opening of the upper shell is opposite to the opening of the lower shell, that is, the opening of the upper shell faces upward and the opening of the lower shell faces downward, or the opening of the upper shell faces downward and the opening of the upper shell faces upward, or the directions of the upper shell and the lower shell face other opposite directions.

[0041] Controlling the relative movement of the upper shell and the lower shell can be controlling the movement of the upper shell toward the lower shell to realize the relative movement of the two, or controlling the movement of the lower shell toward the upper shell to realize the relative movement of the two, or simultaneously controlling the movement of the upper shell and the lower shell to realize the relative movement of the two.

[0042] In a specific scheme, the assembling method further comprises the following steps: installing the functional module on the bottom plate of the lower shell, installing the power supply interface, the grounding column, the network socket, the video output plate and the HDMI connector on the rear side plate of the lower shell; installing the display screen on the front surface of the display screen fixing plate by screws, installing the display screen control plate on the back surface of the display screen fixing plate by screws, connecting the FPC line of the display screen to the display screen control plate to form a display screen assembly; facing the one side of the display screen assembly with the display screen toward the outside of the front cover, installing the display screen fixing plate on the back surface of the front cover by screws, installing the acrylic plate on the front surface of the front cover to form a front cover assembly; and installing the front cover assembly on the front side plate of the lower shell by screws.

[0043] The method installs the display screen assembly and the front cover by screws, which facilitates the disassembly, assembly and maintenance of the display screen assembly and the front cover. Advantageous effects

[0044] The present application forms a pre-alignment mechanism by aligning the contact between the limiting structure and the bent support plate when sliding to the initial position, can quickly realize the alignment of the upper shell and the lower shell, avoids the repeated adjustment of the position between the shells due to the position deviation during assembly, greatly shortens the positioning time, and only needs to slide the shell after positioning and alignment to complete the assembly of the shell, reduces the assembly time of the shell, and improves the production efficiency.

[0045] The bent support plate and the limiting slot are in the same plane, and the limiting structure is inserted into the limiting slot when sliding to the end position, realizes the limiting of the assembled shell, prevents the shaking of the upper shell relative to the lower shell, and ensures the structural stability of the assembled shell.

[0046] The top plate of the upper shell and the side plates connected on both sides of the top plate, the lower shell comprises a bottom plate, a rear side plate connected on one end of the bottom plate and a front side plate connected on the other end of the bottom plate, the upper shell and the lower shell are simple in structure, the bending support plate on the top of the rear side plate, the limiting socket on the top of the front side plate and the alignment limiting structure cooperate to form the alignment limiting structure, only two plate pieces and one socket are needed to form the alignment limiting structure, and the structure is simple. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 It is a whole structure schematic diagram of the present application; Figure 2 It is an exploded view of the present application; Figure 1 It is a front view of the exploded view of the present application; Figure 3 It is an assembly schematic diagram of the upper shell and the lower shell of the present application; Figure 4 It is a schematic diagram of the lower shell in the present application; Figure 5 It is a schematic diagram of the upper shell in the present application; Figure 6 It is an enlarged view of A in the present application; Figure 5 Figure 7 It is a schematic diagram of the limiting area in the present application.

[0048] 1, lower shell; 11, bottom plate; 12, rear side plate; 13, front side plate; 14, bending plate; 15, bending support plate; 16, limiting socket; 2, upper shell; 21, top plate; 22, side plate; 23, lower baffle; 24, rear baffle; 3, alignment limiting structure; 31, connecting plate; 32, transition plate; 33, limiting plate; 4, reinforcing rib; P, limiting area. DETAILED DESCRIPTION

[0049] The present application will be further described below in combination with the drawings.

[0050] ​In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0051] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0052] As Figures 1 to 7 shown, the present application provides an endoscope main shell assembly structure, which comprises a lower shell 1, an upper shell 2 and an alignment limiting structure 3, the lower shell 1 comprises a bottom plate 11, a rear side plate 12 connected to one end of the bottom plate 11 and a front side plate 13 connected to the other end of the bottom plate 11, the top of the rear side plate 12 is provided with a bent support plate 15, the top of the front side plate 13 is provided with a limiting bayonet 16, and the bent support plate 15 and the limiting bayonet 16 are in the same plane; the upper shell 2 comprises a top plate 21 and side plates 22 connected to both sides of the top plate 21; the alignment limiting structure 3 is connected to the bottom surface of the top plate 21; the lower shell 1 and the upper shell 2 are slidingly connected, the alignment limiting structure 3 is in contact with the bent support plate 15 at the initial sliding position, and the alignment limiting structure 3 is inserted into the limiting bayonet 16 at the end sliding position.

[0053] In the initial state, the alignment limiting structure 3 is in contact with the bent supporting plate 15, so that the upper shell and the lower shell are aligned, and the bent supporting plate can support the upper shell. At this time, the upper shell can slide freely along the lower shell. During the sliding assembly process, the upper shell 2 is pushed along the length direction of the lower shell 1, for example, from the rear to the front. Under the guidance of the lower shell, the sliding track remains stable. When the alignment limiting structure 3 slides to the limiting notch 16 of the front side plate 13, the end of the alignment limiting structure 3 is accurately inserted into the notch 16 because the bent supporting plate 15 and the limiting notch 16 are coplanar. At this time, the upper shell 2 and the lower shell 1 are preliminarily fixed. During disassembly, only a reverse force, such as pulling the upper shell backward, is needed to make the alignment limiting structure 3 come out of the limiting notch 16, so that the disassembly process is simple and smooth.

[0054] In the initial sliding position, the contact between the alignment limiting structure and the bent supporting plate forms a pre-alignment mechanism, which can quickly align the upper shell and the lower shell, avoid repeated adjustment of the position between the shells due to position deviation during assembly, greatly shorten the positioning time, and complete the assembly of the shells only after the shells are aligned and slid, thereby reducing the assembly time of the shells and improving the production efficiency. Embodiment 1

[0055] The embodiment provides a shell assembly structure which is simple in structure and short in assembly time, and the structure of the upper shell and the lower shell is described in detail.

[0056] As shown in Figures 3 to 5 The upper shell 2 includes a top plate 21 and side plates 22 connected to both sides of the top plate 21. The upper shell adopts a U-shaped structure, that is, the two side plates 22 in the upper shell 2 are parallel, and the top plate 21 is perpendicular to the two side plates 22. Further, the upper shell 2 is made in one piece, and can be made by one-piece bending.

[0057] The lower shell 1 includes a bottom plate 11, a rear side plate 12 connected to one end of the bottom plate 11, and a front side plate 13 connected to the other end of the bottom plate 11. Similarly, the lower shell adopts a U-shaped structure, and the rear side plate 12 and the front side plate 13 of the lower shell 1 are parallel, and the bottom plate 11 is perpendicular to the front side plate 12 and the rear side plate 13. Further, the rear side plate 12 is provided with a bent supporting plate 15 which is perpendicular to the rear side plate 12, and the front side plate 13 is provided with a limiting notch 16, and the bent supporting plate 15 and the limiting notch 16 are in the same plane. The lower shell 1 is made in one piece, and can be made by one-piece bending. Specifically, the bottom plate 11, the front side plate 12, the rear side plate 13 and the bent supporting plate 15 are bent in one piece, and the limiting notch 16 is made by stamping.

[0058] Preferably, the upper shell 2 and the lower shell 1 are made of metal material, such as stainless steel, copper alloy, etc. The shell made of metal material can play the role of electromagnetic shielding to prevent the influence of magnetic field on the internal functional components and electronic components.

[0059] Since the shapes of the upper shell and the lower shell are both U-shaped structures, the end faces of the upper shell are flush, and the end faces of the lower shell are flush. That is, the left and right sides of the rear side plate 12, the bottom plate 11 and the front side plate 13 are respectively in the same plane, the front end faces of the top plate 21 and the side plate 22 are in the same plane, and the rear end faces of the top plate 21 and the side plate 22 are in the same plane. When the lower shell 1 and the upper shell 2 slide, the side plate 22 first adheres to the left and right end faces of the rear side plate 12, then adheres to the left and right end faces of the bottom plate 11, and finally adheres to the left and right end faces of the front side plate 13.

[0060] Further, the top end of the rear side plate 12 is connected with a bent plate 14, and the bent plate 14 is perpendicular to the rear side plate 12. Similarly, the bent plate 14 is also made by one-piece bending forming. As shown in Figure 7 The bent plate 14 is located on both sides of the bent support plate 15, and the horizontal height of the bent plate 14 is higher than that of the bent support plate 15, and the bent plate 14 and the bent support plate 15 on both sides form a limiting area P. The limiting area P can accommodate the alignment limiting structure, and provide spatial position for the alignment of the upper shell and the lower shell.

[0061] In the present application, as shown in Figure 5 and Figure 6 The alignment limiting structure 3 is connected to the middle part of the top plate 21, and the bent support plate 15 is located in the middle part of the rear side plate 12; the width of the alignment limiting structure 3 and the width of the bent support plate 15 are matched, and the midlines in the width direction of the two coincide. In the present application, the width of the alignment limiting structure 3 is 100 mm, and the width of the bent support plate 15 is 105 mm. This design can facilitate the alignment of the alignment limiting structure 3 and the bent support plate, and after alignment, the upper shell will not have a large amount of shaking relative to the lower shell.

[0062] The shape of the alignment limiting structure 3 is shown in Figure 6 The alignment limiting structure 3 includes a connecting plate body 31, a transition plate 32 and a limiting plate 33, which are made by one-piece forming, the connecting plate 31 is pasted on the bottom surface of the top plate 21 by glue or welded on the bottom surface of the top plate, and the limiting plate 33 is parallel to the top plate 21.

[0063] It is worth mentioning that at least a part of the limiting plate 33 is located outside the upper shell 2, and the limiting plate 33 is inserted into the limiting notch 16 at the sliding end position. The present application has the following two advantages: first, the position of the limiting plate can be directly observed during alignment, which facilitates the positioning and alignment of the upper shell and the lower shell during assembly; second, the upper shell does not interfere with the lower shell during alignment, further improving the efficiency of the positioning and alignment of the upper shell and the lower shell.

[0064] Therefore, when the upper shell 2 and the lower shell 1 are assembled, only the limiting plate 33 needs to be moved into the limiting area P to achieve the alignment of the upper and lower shells, and then the upper shell 2 is slid to complete the assembly of the two, and finally the assembly is completed by screwing.

[0065] In order to prevent the upper shell 2 from moving excessively, the present application further provides a backstop 24, as shown in Figure 5 The backstop 24 is connected to the rear end surface of the top plate 21 and the side plate 22, respectively, and is perpendicular to the top plate 21 and the side plate 22. When at the sliding end position, the backstop 24 is in contact with the rear end surface 12 of the back side plate 12, which can effectively limit the continuous sliding of the upper shell.

[0066] In the present application, the bottom end surface of the side plate 22 is connected with a lower stop plate 23, and the lower stop plate 23 is perpendicular to the side plate 22. By providing the lower stop plate, the positional deviation between the upper shell and the lower shell is further limited. When at the sliding end position, the limiting plate 33 is inserted into the limiting notch 16, which can limit the position between the upper shell and the lower shell and prevent the two from shaking. The lower stop plate 23 engages with the bottom plate 11 to further limit the position between the upper shell and the lower shell and prevent the two from shaking.

[0067] Further, the lower stop plate 23 is provided with a through hole 231, and the bottom plate 11 is provided with a screw hole matched with the through hole; at the sliding end position, a screw is connected into the screw hole through the through hole. By the contact of the lower stop plate 23 and the bottom plate, the insertion of the limiting plate 33 into the limiting notch 16, and the contact of the backstop 24 and the rear end surface 12 of the back side plate 12, the upward and forward movement between the upper shell and the lower shell is limited, and finally the upper shell and the lower shell are fixed by the screw, realizing the rearward movement of the upper shell and the lower shell, and ensuring the stability of the assembled upper shell and lower shell.

[0068] In the present application, after the upper shell and the lower shell are assembled, only 6-8 screws (2-3 screws are provided on each side of the lower stop plate) are needed to fix the upper shell and the lower shell. By connecting the screw at the lower stop plate, the overall appearance of the shell can also be ensured to be simple. Example 2

[0069] This embodiment is based on the inventive concept of embodiment 1, and the same parts as embodiment 1 are not repeated. This embodiment details the reinforcing rib structure.

[0070] As shown in Figure 2 and Figure 3 The present application also provides a reinforcing rib 4. The reinforcing rib of the present application is arranged at the top of the lower shell, that is, one end of the reinforcing rib 4 is connected to the top end of the rear side plate 12, and the other end is connected to the top end of the front side plate 13. The top ends of the rear side plate 12 and the front side plate 13 are of the same height, so that the reinforcing rib 4 is parallel to the bottom plate 11. In the present application, the reinforcing rib 4 is arranged along the length direction of the bottom plate 11, that is, the arrangement direction of the reinforcing rib 4 is the same as the sliding direction of the upper shell 2.

[0071] It is worth mentioning that the present application has the following three advantages by arranging the reinforcing rib 4 at the top of the lower shell. First, the reinforcing rib 4 is arranged at the top of the lower shell, which does not interfere with the functional components in the lower shell and does not affect the installation of the functional components. Second, it plays a role in structural reinforcement, ensuring the structural strength of the lower shell, preventing the opening end of the lower shell from tilting the rear side plate 12 and the front side plate 13, and affecting the installation of the upper shell. Third, it plays a role in supporting and guiding. When the upper shell moves from the initial sliding position to the end sliding position, the reinforcing rib 4 can support the upper shell, prevent the front end of the top plate 21 of the upper shell 2 from tilting downward, and further ensure that the limiting plate 33 of the alignment limiting structure 3 can be accurately inserted into the limiting socket 16. If the reinforcing rib is not arranged at the top of the lower shell, due to the weight of the metal shell and the lack of structural reinforcement in the upper shell, the front end of the top plate 21 of the upper shell will tilt downward under the action of gravity during assembly, and the limiting plate 33 cannot be accurately inserted into the limiting socket 16, which requires manual adjustment, thereby affecting the assembly efficiency.

[0072] Further, in the present application, the reinforcing rib is connected to the lower shell 1 by screws. Specifically, one end of the reinforcing rib 4 is connected to the bent plate 14 on the rear side plate 12 by a screw, and the other end is connected to the bent plate 14 on the front side plate 13 by a screw.

[0073] In the present application, two reinforcing ribs 4 are arranged, and the two reinforcing ribs are symmetrically arranged on both sides of the bent support plate 15. On the one hand, it does not hinder the movement of the alignment limiting structure, and on the other hand, it can ensure the supporting effect of the top plate 21. Embodiment 3

[0074] This embodiment provides an endoscope host, which adopts the shell assembly structure of embodiments 1 and 2 to facilitate quick assembly of the host. Embodiment 4

[0075] Based on the shell assembly structure of embodiments 1 and 2, this embodiment provides a shell assembly method, which specifically includes the following steps: Step 1: Place the reinforcing rib 4 in the lower shell 1, align the screw holes on the reinforcing rib 4 with the through holes of the bent plate 14, and screw the screws from top to bottom through the through holes of the bent plate 14 into the screw holes of the reinforcing rib to lock the reinforcing rib 4.

[0076] Step 2: Adjust the position of the upper shell 2 so that the opening of the upper shell 2 is opposite to the opening of the lower shell 1. This step is a preparation before assembly, and if the opening of the upper shell and the opening of the lower shell are opposite, this step is not needed.

[0077] Step 3: Adjust the angle of the upper shell 2 so that the top plate 21 of the upper shell 2 is parallel to the bottom plate 11 of the lower shell 1. This step can be quickly realized by a workbench with a flat surface. Specifically, place the lower shell 1 and the upper shell 2 on the workbench to make the top plate 21 of the upper shell 2 parallel to the bottom plate 11 of the lower shell 1.

[0078] Step 4: Control the movement of the upper shell 2 so that the limiting plate 33 is aligned with the bent support plate 15. This step can also be realized by moving the lower shell 1. Since part of the limiting plate 33 is exposed outside the upper shell, it is convenient to observe whether the limiting plate 33 and the bent support plate 15 are aligned.

[0079] Step 5: Control the relative movement of the upper shell 2 and the lower shell 1 to insert the limiting plate 33 into the limiting socket 16. This step is preferably realized by moving the upper shell 2. When assembling, only the upper shell 2 needs to be pushed to move. When the upper shell 2 cannot be moved, it means that the limiting plate 33 has been inserted into the limiting socket 16. At this time, the preliminary assembly is completed. Then, the screws are connected to the bottom plate 11 through the lower baffle 23, and the assembly of the upper shell and the lower shell is completed.

[0080] The assembly structure and the assembly method of the application can complete the assembly of the main shell in only 5-6 minutes. Specifically, the installation of the two reinforcing ribs takes about 2 minutes, the alignment of the upper shell and the lower shell and the completion of the preliminary assembly take about 1 minute, and the locking of the upper shell and the lower shell by screws takes about 2-3 minutes. Compared with other forms of main shell assembly, which takes about 30 minutes, the efficiency is improved by 5-6 times.

[0081] The assembling method further comprises the following steps before step 1: step 01, assembling of the functional module and the interface. The functional module is installed on the bottom plate of the lower shell 1, and the power interface, the grounding column, the network socket, the video output board and the HDMI joint are installed on the rear plate 12 of the lower shell 1. Step 02, assembling of the display screen assembly. The display screen is installed on the front of the display screen fixing plate by screws, the display screen control plate is installed on the back of the display screen fixing plate by screws, the FPC line of the display screen is connected to the display screen control plate, and the display screen assembly is formed. Step 03, assembling of the front cover assembly. The display screen assembly with the display screen faces the outside of the front cover, the display screen fixing plate is installed on the back of the front cover by screws, and the acrylic plate is installed on the front of the front cover, and the front cover assembly is formed. Step 04, assembling of the front cover. The front cover assembly is installed on the front plate 13 of the lower shell 1 by screws.

[0082] The assembling method assembles the display screen assembly and the front cover assembly by screws, and is convenient for installation, disassembly, maintenance of the display screen assembly and assembling of the front cover.

[0083] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An endoscope main unit housing assembly structure, characterized in that, include: The lower housing (1) includes a base plate (11), a rear side plate (12) connected to one end of the base plate (11), and a front side plate (13) connected to the other end of the base plate (11). The rear side plate (12) is provided with a bending support plate (15) at the top, and the front side plate (13) is provided with a limiting slot (16) at the top. The bending support plate (15) and the limiting slot (16) are in the same plane. The upper shell (2) includes a top plate (21) and side plates (22) connected to both sides of the top plate (21); Align the limiting structure (3) and connect it to the bottom surface of the top plate (21); The lower housing (1) and the upper housing (2) are slidably connected. At the initial sliding position, the alignment limiting structure (3) contacts the bending support plate (15). At the end sliding position, the alignment limiting structure (3) is inserted into the limiting slot (16).

2. The shell assembly structure according to claim 1, characterized in that, The left side of the rear side plate (12), the left side of the bottom plate (11) and the left side of the front side plate (13) are on the same plane, and the right side of the rear side plate (12), the right side of the bottom plate (11) and the right side of the front side plate (13) are on the same plane. When the lower housing (1) and the upper housing (2) slide, the side plate (22) is attached to the left and right end faces of the rear side plate (12), or the side plate (22) is attached to the left and right end faces of the bottom plate (11), or the side plate (22) is attached to the left and right end faces of the front side plate (13).

3. The shell assembly structure according to claim 1, characterized in that, The top of the rear side plate (12) is connected to a bent plate (14), and the bent plate (14) is perpendicular to the rear side plate (12); The bending plate (14) is located on both sides of the bending support plate (15), and the horizontal height of the bending plate (14) is higher than the horizontal height of the bending support plate (15). A limiting area (P) is formed between the bending plate (14) and the bending support plate (15) on both sides. When sliding in the initial position, the alignment limiting structure (3) is located in the limiting area (P).

4. The shell assembly structure according to claim 1, characterized in that, It also includes a reinforcing rib (4), one end of which is connected to the top of the rear side plate (12), and the other end is connected to the top of the front side plate (13); The reinforcing rib (4) is arranged along the length direction of the base plate (11).

5. The housing assembly structure according to claim 4, characterized in that, The top of the rear side plate (12) and the top of the front side plate (13) are both connected to a bending plate (14). The bending plate (14) is perpendicular to the rear side plate (12) and the front side plate (13), and the bending plate (14) on the rear side plate (12) and the bending plate (14) on the front side plate (13) are on the same plane. One end of the reinforcing rib (4) is connected to the bent plate (14) on the rear side plate (12), and the other end is connected to the bent plate (14) on the front side plate (13).

6. The shell assembly structure according to claim 1, characterized in that, The rear end faces of the top plate (21) and the side plate (22) are both connected to a rear baffle (24), which is perpendicular to the top plate (21) and the side plate (22) respectively.

7. The housing assembly structure according to claim 1, characterized in that, The bottom end face of the side plate (22) is connected to a lower baffle (23), which is perpendicular to the side plate (22); the lower baffle (23) is provided with a through hole (231), and the bottom plate (11) is provided with a screw hole that matches the through hole; When in the sliding end position, the screw passes through the through hole and connects to the screw hole.

8. The housing assembly structure according to claim 1, characterized in that, The alignment limiting structure (3) is located in the middle of the top plate (21), and the bending support plate (15) is located in the middle of the rear side plate (12). The width of the alignment limiting structure (3) is adapted to the width of the bending support plate (15), and the center lines of the two in the width direction coincide.

9. The housing assembly structure according to any one of claims 1-8, characterized in that, The alignment limiting structure (3) includes a connecting plate (31), a transition plate (32), and a limiting plate (33). The connecting plate (31) is connected to the bottom surface of the top plate (21), and the limiting plate (33) is connected to the connecting plate (31) through the transition plate (32). The limiting plate (33) and the top plate (21) are parallel. At least a portion of the limiting plate (33) is located outside the upper housing (2). In the initial sliding position, the limiting plate (33) contacts the bending support plate (15). In the end sliding position, the limiting plate (33) is inserted into the limiting slot (16).

10. An assembly method, implemented based on the host housing assembly structure according to any one of claims 1-9, characterized in that, The methods include: Adjust the position of the upper shell (2) so that the opening of the upper shell (2) is opposite to the opening of the lower shell (1); Adjust the angle of the upper shell (2) so that the top plate (21) of the upper shell (2) and the bottom plate (11) of the lower shell (1) are parallel; Control the upper housing (2) to move so that the limiting plate (33) is aligned with the bending support plate (15); Control the relative movement of the upper housing (2) and the lower housing (1) to insert the limiting plate (33) into the limiting slot (16).

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