Hinge structure for VPX case observation window

Abstract

The invention relates to the technical field of electromechanical equipment, in particular to a hinge structure for a VPX case observation window, which comprises a front panel, an observation window and a hinge pin, a hinge joint is integrally formed on the bottom surface of the observation window, and a limiting nozzle is arranged on the hinge joint; a bottom cross beam of the front panel is provided with a hinge joint rotation groove and a hinge pin mounting counter bore, and the hinge pin mounting counter bore is communicated with the hinge joint rotation groove; a limiting cross beam is arranged at the opening part of the hinge joint rotary groove; the hinge joint is mounted in the hinge joint rotation groove; a limiting piece is inserted into the hinge pin mounting counter bore, the first end of the hinge pin is inserted into a pin hole in the side face of the hinge head, and the second end of the hinge pin extends into the hinge pin mounting counter bore and is clamped in a limiting spigot in the top of the limiting piece; when the observation window is overturned downwards around the hinge pin to be in an upper horizontal state, the limiting nozzle abuts against the lower surface of the limiting cross beam.

Description

Technical Field

[0001] The present invention relates to the technical field of electromechanical equipment, and in particular to a hinge structure for a VPX chassis observation window. Background Art

[0002] The VPX chassis needs to be equipped with an observation window to facilitate observation of the indicator lights of each plug-in module in the chassis, and the observation window must have functions such as perspective, shielding, and opening and closing to facilitate the plug-in, removal, replacement, and maintenance of each plug-in module.

[0003] In the prior art, for example, a patent with announcement number CN219612275U discloses a VPX architecture reinforced chassis with a flippable visualization window, wherein a small panel assembly is disposed on the front panel of the VPX architecture reinforced chassis, wherein the small panel assembly is pivotally mounted to the front panel via a plurality of rotating shafts and is fixed with a plurality of rivet screws, wherein the small panel assembly includes a small panel, a shielding pad, a wire mesh glass, a rubber pad and a pressure frame from the inside to the outside, and the flippable visualization window function is provided by the cooperation of these components.

[0004] In the above-mentioned prior art, the rotating shaft connection structure can realize the flipping function of the observation window. Specifically, a hinged head is integrally formed at the bottom of the small panel assembly, and a mounting groove is provided on the bottom crossbeam of the front panel. The hinged head extends into the mounting groove and is connected by the rotating shaft. The simplified schematic structure is as follows: Figure 1 When the observation window is open, the outer surface of the hinged head is pressed against the lower edge of the mounting groove to limit the observation window, and the contact part is shown at M in the figure. The problems with this limiting method are as follows:

[0005] (1) During the process of opening and closing the observation window many times, the number of collisions between the hinge and the lower edge of the mounting groove increases, causing the paint on the outer surface of the hinge to fall off, thus affecting product quality.

[0006] (2) As the number of collisions increases, wrinkles will appear at the edges of the installation groove where they collide, and depressions will easily appear at the collision locations of the hinged joints, seriously affecting product quality.

[0007] (3) When the observation window needs to be opened during equipment installation, commissioning or maintenance, soft objects need to be used to block the location where the collision occurs, which will affect the product production efficiency and maintainability. Summary of the invention

[0008] The main purpose of the present invention is to propose a hinged structure for a VPX chassis observation window, aiming to solve the above technical problems.

[0009] To achieve the above-mentioned purpose, the present invention proposes a hinge structure for a VPX chassis observation window, comprising a front panel, an observation window and a hinge pin; a hinge head is integrally formed on the bottom surface of the observation window, and a limiting position mouth is arranged on the hinge head; a hinge head rotation groove and a hinge pin mounting countersunk hole are opened on the bottom cross beam of the front panel, and the hinge pin mounting countersunk hole is communicated with the hinge head rotation groove; a limiting position cross beam is arranged at the mouth of the hinge head rotation groove; the hinge head is installed in the hinge head rotation groove; a limiting piece is inserted in the hinge pin mounting countersunk hole, the first end of the hinge pin is inserted in the pin hole on the side of the hinge head, the second end of the hinge pin extends into the hinge pin mounting countersunk hole and is clamped in the limiting stop mouth at the top of the limiting piece; when the observation window flips downward around the hinge pin to an upper horizontal state, the limiting position mouth abuts against the lower surface of the limiting cross beam.

[0010] Preferably, a connecting ear plate is integrally formed at the lower end of the limiting member; the hinge pin mounting countersunk hole is a countersunk hole with an open lower end, and an ear plate mounting sinker is provided on the bottom surface of the bottom cross beam of the front panel at the mouth of the hinge pin mounting countersunk hole; the connecting ear plate is installed in the ear plate mounting sinker and is connected to the bottom cross beam of the front panel by screws.

[0011] Optionally, a hinge structure for an observation window of a VPX chassis comprises a front panel, an observation window and a hinge pin; a hinge block is provided at the bottom of the observation window, a hinge head is integrally formed at the bottom of the hinge block, and a limit stop mouth is provided on the hinge head; an anti-collision groove is provided on the bottom surface of the hinge block; a hinge seat is installed on the bottom cross beam of the front panel, a hinge head rotation groove and a hinge pin mounting countersunk hole are provided on the hinge seat, and the hinge pin mounting countersunk hole is communicated with the hinge head rotation groove; a limit cross beam is provided at the mouth of the hinge head rotation groove; the hinge head is installed in the hinge head rotation groove; a limit piece is inserted in the hinge pin mounting countersunk hole, the first end of the hinge pin is inserted in the pin hole on the side of the hinge head, the second end of the hinge pin extends into the hinge pin mounting countersunk hole and is clamped in the limit stop mouth at the top of the limit piece; when the observation window flips downward around the hinge pin to an upper horizontal state, the limit mouth abuts against the lower surface of the limit cross beam.

[0012] Preferably, a first accommodating groove is opened on the bottom surface of the observation window; the hinge block is embedded in the first accommodating groove; a countersunk through hole is arranged on the hinge block, and a first countersunk screw is arranged in the countersunk through hole, and the first countersunk screw is tightened on the bottom of the first accommodating groove.

[0013] Optionally, a first accommodating groove is provided on the bottom surface of the observation window; the hinge block is embedded in the first accommodating groove, and the joint between the hinge block and the first accommodating groove is connected by welding.

[0014] Preferably, a second accommodating groove is provided on the bottom cross beam of the front panel, the hinge seat is embedded in the second accommodating groove, and the hinge seat is fastened to the bottom cross beam of the front panel by a second countersunk screw.

[0015] Optionally, a second accommodating groove is provided on the bottom cross beam of the front panel, the hinge seat is embedded in the second accommodating groove, and the joint between the hinge seat and the second accommodating groove is connected by welding.

[0016] Preferably, a connecting ear plate is integrally formed at the lower end of the limit member; the hinge pin mounting countersunk hole is a countersunk hole with an open lower end, and an ear plate mounting sinker is provided on the bottom surface of the hinge seat; the connecting ear plate is installed in the ear plate mounting sinker and is fastened to the hinge seat by screws.

[0017] Preferably, the first end of the hinge pin is configured as a columnar body and the second end is configured as an octagonal prism; the columnar body is arranged on one of the vertical side surfaces of the octagonal prism; a process threaded hole is arranged in the center of the octagonal prism for installing a process screw; the columnar body is inserted into the pin hole on the side surface of the hinge head; the octagonal prism is arranged in the hinge pin mounting countersunk hole and is clamped in the limit stop at the top of the limit member.

[0018] Preferably, a clearance groove is provided on the bottom surface of the observation window, and a clearance bevel is provided on the upper edge of the bottom crossbeam of the front panel; when the observation window flips around the hinge pin, the clearance bevel and the clearance groove form a clearance with each other.

[0019] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0020] (1) By adopting the hinge structure provided by the present invention, a limiting crossbeam is used to limit the limiting mouth on the hinge joint. When the observation window is opened, the limiting mouth can be abutted against the lower surface of the limiting crossbeam, so that the observation window can be kept in a horizontal state, avoiding collision between the hinge joint and the lower edge of the hinge joint rotating groove. Therefore, the observation window can be opened and closed without defects such as collision, scratches, and paint peeling, effectively overcoming the problems existing in the prior art.

[0021] (2) By adopting the hinge structure provided by the present invention, the observation window is automatically limited when it is flipped to the horizontal position, and there is no need to use soft objects for isolation, thereby improving the production efficiency of the product, improving the product quality, and improving the maintainability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a simplified schematic diagram of a hinge structure in the prior art;

[0024] Figure 2 This is an overall schematic diagram of the hinge structure according to the first embodiment of the present invention;

[0025] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0026] Figure 4 for Figure 2 The enlarged cross-sectional view of point A in the middle;

[0027] Figure 5 It is a schematic diagram of the hinge joint rotation groove and hinge pin installation countersunk hole provided on the bottom crossbeam of the front panel in the first embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of a hinge pin installation countersunk hole provided on the bottom crossbeam of the front panel in the first embodiment of the present invention;

[0029] Figure 7 Schematic diagram of an integrally formed hinge joint on the bottom surface of the observation window in the first embodiment of the present invention Figure 1 ;

[0030] Figure 8 Schematic diagram of an integrally formed hinge joint on the bottom surface of the observation window in the first embodiment of the present invention Figure 2 ;

[0031] Fig. 9 It is a front view of the limiting member in the present invention;

[0032] Fig.10 A top view of the position limiting member in the present invention;

[0033] Fig.11 It is a schematic diagram of the observation window in the closed state in the first embodiment of the present invention;

[0034] Fig.12 This is a schematic diagram of the observation window in the open state in the first embodiment of the present invention;

[0035] Fig.13 This is an overall schematic diagram of the hinge structure provided in the second embodiment of the present invention;

[0036] Fig.14 for Fig.13 The enlarged cross-sectional view of point B in the middle;

[0037] Fig.15 This is a schematic diagram of the structure in which the hinge head and the hinge block are integrally formed in the second embodiment of the present invention;

[0038] Fig.16 It is a structural schematic diagram of the hinge block embedded in the first accommodation groove in the second embodiment of the present invention;

[0039] Fig.17 This is a schematic diagram of the screw connection between the hinge block and the observation window in the second embodiment of the present invention;

[0040] Fig.18 The three-dimensional structure of the hinge seat in the second embodiment of the present invention Figure 1 ;

[0041] Fig.19 The three-dimensional structure of the hinge seat in the second embodiment of the present invention Figure 2 ;

[0042] Fig. 20 It is a structural schematic diagram of the hinge seat embedded in the second receiving groove in the second embodiment of the present invention;

[0043] Fig.21 Schematic diagram of the connection between the hinge seat and the front panel through the second countersunk screw in the second embodiment of the present invention Figure 1 ;

[0044] Fig. 22 Schematic diagram of the connection between the hinge seat and the front panel through the second countersunk screw in the second embodiment of the present invention Figure 2 ;

[0045] Fig.23 This is an overall schematic diagram of the hinge structure provided in the third embodiment of the present invention;

[0046] Fig.24 for Fig.23 The enlarged cross-sectional view at point C in the middle;

[0047] Fig.25 This is a schematic diagram of the structure in which the hinge head and the hinge block are integrally formed in the third embodiment of the present invention;

[0048] Fig.26 Schematic diagram of welding the hinge block and the observation window in the third embodiment of the present invention Figure 1 ;

[0049] Fig. 27 Schematic diagram of welding the hinge block and the observation window in the third embodiment of the present invention Figure 2 ;

[0050] Fig.28 It is a schematic diagram of welding the hinge seat and the front panel in the third embodiment of the present invention;

[0051] Fig.29 It is a structural schematic diagram of the hinge pin in the present invention;

[0052] Fig.30 It is a schematic diagram of the structure when the hinge pin and the process screw in the present invention cooperate with each other.

[0053] Explanation of the accompanying figure numbers: 1. Front panel; 1a. Make way bevel; 1b. Second accommodating groove; 2. Observation window; 2a. Make way groove; 2b. First accommodating groove; 3. Hinge head; 3a. Limiting mouth; 4. Hinge head rotation groove; 5. Hinge pin mounting countersunk hole; 6. Hinge pin; 7. Limiting beam; 8. Limiting piece; 8a. Limiting stop; 8b. Connecting ear plate; 9. Ear plate mounting sinker; 10. Hinge block; 10a. Countersunk through hole; 10b. Anti-collision groove; 10c. Process groove; 11. Hinge seat; 11a. Threaded hole; 12. First countersunk screw; 13. Second countersunk screw; 14. Process screw. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0057] Embodiment 1:

[0058] Combination Figures 2 to 12 ,as well as Fig.29, Fig.30 The present invention provides a specific embodiment 1 of the hinge structure for the observation window of the VPX chassis, the hinge structure comprises a front panel 1, an observation window 2 and a hinge pin 6; a hinge head 3 is integrally formed on the bottom surface of the observation window 2, and a limiting position mouth 3a is arranged on the hinge head 3; a hinge head rotation groove 4 and a hinge pin mounting countersunk hole 5 are provided on the bottom cross beam of the front panel 1, and the hinge pin mounting countersunk hole 5 is communicated with the hinge head rotation groove 4; a limiting position cross beam 7 is arranged at the mouth of the hinge head rotation groove 4; the hinge head 3 is installed in the hinge head rotation groove 4; a limiting member 8 is inserted in the hinge pin mounting countersunk hole 5, the first end of the hinge pin 6 is inserted in the pin hole on the side of the hinge head 3, and the second end of the hinge pin 6 extends into the hinge pin mounting countersunk hole 5 and is clamped in the limiting stop 8a at the top of the limiting member 8.

[0059] Combination Fig.11 and Fig.12 As shown, when the observation window 2 is flipped downward around the hinge pin 6 to an upper horizontal state, the limiting mouth 3 a abuts against the lower surface of the limiting crossbeam 7 .

[0060] In this embodiment, the hinged joint 3 and the observation window 3 are an integrally formed structure, that is, the hinged joint 3 and the observation window 3 are integrally processed as a whole. Figure 8 As shown, it is processed by an integrated molding method, the relative position accuracy of the hinged head 3 and the observation window 2 is high, there is no seam, and the appearance quality is good.

[0061] Combination Figure 4 , Figure 6 and Fig. 9 As shown, a connecting ear plate 8b is integrally formed at the lower end of the limiting member 8; the hinge pin mounting countersunk hole 5 is a countersunk hole with an open lower end, and an ear plate mounting sink 9 is provided on the bottom surface of the bottom cross beam of the front panel 1 at the mouth of the hinge pin mounting countersunk hole 5; the connecting ear plate 8b is installed in the ear plate mounting sink 9 and is connected to the bottom cross beam of the front panel 1 by screws.

[0062] Combination Figure 5 and Figure 6 As shown, the hinge head rotating groove 4 and the hinge pin mounting countersunk hole 5 are directly opened on the bottom cross beam of the front panel 1 and are integrally processed with the front panel 1, so that the relative position of the hinge head rotating groove 4, the hinge pin mounting countersunk hole 5 and the front panel 1 is highly accurate, without any seams, and has good appearance quality.

[0063] Combination Fig.29 , Fig.30As shown, the first end of the hinge pin 6 is set as a columnar body 6a, and the second end is set as an octagonal prism 6b; the columnar body 6a is set on one of the vertical side surfaces of the octagonal prism 6b; a process threaded hole 6c is set in the center of the octagonal prism 6b for installing a process screw 14; the columnar body 6a is inserted into the pin hole on the side of the hinge head 3; the octagonal prism 6b is set in the hinge pin mounting countersunk hole 5 and is clamped in the limit stop 8a at the top of the limit member 8.

[0064] By adopting the above structure, the octagonal prism 6b is clamped in the limit stop 8a, which plays a limiting role on the hinge pin 6. The process threaded hole 6c is an M3 threaded hole. Since the space of the hinge pin installation countersunk hole 5 is small, it cannot be assembled simply by fingers, pliers or tweezers. During assembly, first use the M3×20 process screw 14 to screw into the M3 process threaded hole 6c, then use the process screw 14 to send the hinge pin 6 into the hinge pin installation countersunk hole 5, and continue to insert the columnar body 6a of the hinge pin 6 into the pin hole on the side of the hinge head 3, and finally reverse and screw and remove the process screw 14, and then the limiter 8 can be installed in the hinge pin installation countersunk hole 5.

[0065] Combination Figure 5 and Figure 8 As shown, a clearance groove 2a is provided on the bottom surface of the observation window 2, and a clearance angle 1a is provided on the upper edge of the bottom crossbeam of the front panel 1; when the observation window 2 is turned around the hinge pin 6, the clearance angle 1a and the clearance groove 2a form a clearance with each other. By providing the clearance groove 2a and the clearance angle 1a, the observation window 2 can avoid interference between its bottom surface and the upper edge of the bottom crossbeam of the front panel 1 when rotating.

[0066] Embodiment 2:

[0067] Combination Figures 13 to 22 ,as well as Fig.29 , Fig.30 The second specific embodiment of the hinge structure for the observation window of the VPX chassis provided by the present invention is shown, the hinge structure includes a front panel 1, an observation window 2 and a hinge pin 6; a hinge block 10 is arranged at the bottom of the observation window 2, a hinge head 3 is integrally formed at the bottom of the hinge block 10, and a limiting position mouth 3a is arranged on the hinge head 3; a hinge seat 11 is installed on the bottom cross beam of the front panel 1, a hinge head rotation groove 4 and a hinge pin mounting countersunk hole 5 are opened on the hinge seat 11, and the hinge pin mounting countersunk hole 5 is connected with the hinge head rotation groove 4; a limiting position cross beam 7 is arranged at the mouth of the hinge head rotation groove 4; the hinge head 3 is installed in the hinge head rotation groove 4; a limiting member 8 is inserted in the hinge pin mounting countersunk hole 5, the first end of the hinge pin 6 is inserted in the pin hole on the side of the hinge head 3, and the second end of the hinge pin 6 extends into the hinge pin mounting countersunk hole 5 and is clamped in the limiting stop 8a at the top of the limiting member 8.

[0068] When the observation window 2 is turned down around the hinge pin 6 to an upper horizontal state, the limiting mouth 3a abuts against the lower surface of the limiting crossbeam 7. The mutual limiting structure between the limiting mouth 3a and the limiting crossbeam 7 is similar to that in the first embodiment. Fig.12 Similar, no further elaboration is given here.

[0069] Combination Figures 15 to 17 As shown, a first receiving groove 2b is provided on the bottom surface of the observation window 2; the hinge block 10 is embedded in the first receiving groove 2b; a countersunk through hole 10a is provided on the hinge block 10, and a first countersunk screw 12 is provided in the countersunk through hole 10a, and the first countersunk screw 12 is screwed on the bottom of the first receiving groove 2b. In this embodiment, the hinge block 10 and the observation window 2 are fastened by screw connection, which is less difficult to process and suitable for mass production.

[0070] Combination Fig.15 As shown, an anti-collision groove 10 b is provided on the bottom surface of the hinge block 10 . When the hinge block 10 rotates around the hinge pin 6 , the anti-collision groove 10 b plays a role of giving way to avoid interference between the bottom surface of the hinge block 10 and the edge of the hinge seat 11 .

[0071] Combination Figures 20 to 22 As shown, a second receiving groove 1b is provided on the bottom crossbeam of the front panel 1, the hinge seat 11 is embedded in the second receiving groove 1b, and the hinge seat 11 is fastened to the bottom crossbeam of the front panel 1 by a second countersunk screw 13. Specifically, the second countersunk screw 13 passes through the front panel 1 horizontally and then screws into the threaded hole on the side of the hinge seat 11. The hinge seat 11 and the front panel 1 are fastened by screw connection, which has low processing difficulty and is suitable for mass production.

[0072] Combination Fig. 9 , Fig.14 and Fig.19 As shown, a connecting ear plate 8b is integrally formed at the lower end of the limit member 8; the hinge pin mounting countersunk hole 5 is a countersunk hole with an open lower end, and an ear plate mounting sink 9 is provided on the bottom surface of the hinge seat 11; the connecting ear plate 8b is installed in the ear plate mounting sink 9 and is fastened to the hinge seat 11 by screws.

[0073] Combination Fig.29 , Fig.30As shown, the first end of the hinge pin 6 is set as a columnar body 6a, and the second end is set as an octagonal prism 6b; the columnar body 6a is set on one of the vertical sides of the octagonal prism 6b; a process threaded hole 6c is set in the center of the octagonal prism 6b for installing a process screw 14; the columnar body 6a is inserted into the pin hole on the side of the hinge head 3; the octagonal prism 6b is set in the hinge pin installation countersunk hole 5 and is clamped in the limit stop 8a at the top of the limiter 8. In this second embodiment, the function of the columnar body 6a and the octagonal prism 6b set on the hinge pin 6 is the same as that in the first embodiment, and will not be repeated here.

[0074] Combination Fig.16 , Fig. 20 As shown, a clearance groove 2a is provided on the bottom surface of the observation window 2, and a clearance angle 1a is provided on the upper edge of the bottom crossbeam of the front panel 1; when the observation window 2 is turned around the hinge pin 6, the clearance angle 1a and the clearance groove 2a form a clearance with each other. By providing the clearance groove 2a and the clearance angle 1a, the observation window 2 can avoid interference between its bottom surface and the upper edge of the bottom crossbeam of the front panel 1 when rotating.

[0075] Combination Fig.15 As shown, a process groove 10c is provided on the opposite surface of the hinge block 10, which can meet the tool space requirement of the hinge head 3 during processing.

[0076] Embodiment three:

[0077] Combination Figures 23 to 30 The third specific embodiment of the hinge structure for the observation window of the VPX chassis provided by the present invention is shown, and the hinge structure includes a front panel 1, an observation window 2 and a hinge pin 6; a hinge block 10 is arranged at the bottom of the observation window 2, a hinge head 3 is integrally formed at the bottom of the hinge block 10, and a limited position mouth 3a is arranged on the hinge head 3; an anti-collision groove 10b is arranged on the bottom surface of the hinge block 10; a hinge seat 11 is installed on the bottom cross beam of the front panel 1, and a hinge head rotation groove 4 and a hinge pin installation countersunk hole 5 are opened on the hinge seat 11, and the hinge The pin installation countersunk hole 5 is connected with the hinge head rotating groove 4; a limiting cross beam 7 is arranged at the mouth of the hinge head rotating groove 4; the hinge head 3 is installed in the hinge head rotating groove 4; a limiting member 8 is inserted in the hinge pin installation countersunk hole 5, the first end of the hinge pin 6 is inserted in the pin hole on the side of the hinge head 3, and the second end of the hinge pin 6 extends into the hinge pin installation countersunk hole 5 and is clamped in the limiting stop 8a at the top of the limiting member 8; when the observation window 2 is flipped downward around the hinge pin 6 to the upper horizontal state, the limiting mouth 3a abuts against the lower surface of the limiting cross beam 7. The mutual limiting structure between the limiting mouth 3a and the limiting cross beam 7 is similar to that in the first embodiment. Fig.12 Similar, no further elaboration is given here.

[0078] In the present invention, the structure of the hinge seat 11 in the third embodiment is similar to that in the second embodiment, except that the hinge seat 11 in the second embodiment is provided with a threaded hole on the side for connecting with the second countersunk screw 13, while the hinge seat 11 in the third embodiment is not provided with a threaded hole on the side.

[0079] Combination Figures 25 to 27 As shown, a first receiving groove 2b is provided on the bottom surface of the observation window 2; the hinge block 10 is embedded in the first receiving groove 2b, and the joint between the hinge block 10 and the first receiving groove 2b is connected by welding. The hinge block 10 and the observation window 2 are connected by welding, which is easy to process and suitable for mass production. After welding, stress is relieved and the weld is polished. When the shoe is painted, the exposed weld is processed, so that the exposed joint at the joint between the hinge block 10 and the observation window 2 is invisible, and the appearance quality is good.

[0080] Combination Fig.28 As shown, a second receiving groove 1b is provided on the bottom crossbeam of the front panel 1, the hinge seat 11 is embedded in the second receiving groove 1b, and the joint between the hinge seat 11 and the second receiving groove 1b is connected by welding. The hinge seat 11 is connected to the front panel 1 by welding, which is easy to process and suitable for mass production. After welding, stress is relieved and the weld is polished. When the shoe is painted, the exposed weld is processed, so that the exposed joint at the joint between the hinge seat 11 and the front panel 1 is invisible, and the appearance quality is good.

[0081] Combination Fig. 9 , Fig.14 and Fig.19 As shown, a connecting ear plate 8b is integrally formed at the lower end of the limit member 8; the hinge pin mounting countersunk hole 5 is a countersunk hole with an open lower end, and an ear plate mounting sink 9 is provided on the bottom surface of the hinge seat 11; the connecting ear plate 8b is installed in the ear plate mounting sink 9 and is fastened to the hinge seat 11 by screws.

[0082] Combination Fig.29 , Fig.30 As shown, the first end of the hinge pin 6 is set as a columnar body 6a, and the second end is set as an octagonal prism 6b; the columnar body 6a is set on one of the vertical sides of the octagonal prism 6b; a process threaded hole 6c is set in the center of the octagonal prism 6b for installing a process screw 14; the columnar body 6a is inserted into the pin hole on the side of the hinge head 3; the octagonal prism 6b is set in the hinge pin installation countersunk hole 5 and clamped in the limit stop 8a at the top of the limiter 8. In this third embodiment, the function of the columnar body 6a and the octagonal prism 6b set on the hinge pin 6 is the same as that in the first embodiment, and will not be repeated here.

[0083] Combination Fig.26 , Fig.28As shown, a clearance groove 2a is provided on the bottom surface of the observation window 2, and a clearance angle 1a is provided on the upper edge of the bottom crossbeam of the front panel 1; when the observation window 2 is turned around the hinge pin 6, the clearance angle 1a and the clearance groove 2a form a clearance with each other. By providing the clearance groove 2a and the clearance angle 1a, the observation window 2 can avoid interference between its bottom surface and the upper edge of the bottom crossbeam of the front panel 1 when rotating.

[0084] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hinge structure for a VPX chassis observation window, characterized in that: It comprises a front panel (1), an observation window (2) and a hinge pin (6); a hinge head (3) is integrally formed on the bottom surface of the observation window (2), and a limit position nozzle (3a) is provided on the hinge head (3); A hinged head revolving groove (4) and a hinged pin mounting countersunk hole (5) are provided on the bottom crossbeam of the front panel (1), and the hinged pin mounting countersunk hole (5) is connected to the hinged head revolving groove (4); a limit crossbeam (7) is provided at the mouth of the hinged head revolving groove (4); The hinge head (3) is installed in the hinge head rotation groove (4); a limit piece (8) is inserted in the hinge pin installation countersunk hole (5); the first end of the hinge pin (6) is inserted in the pin hole on the side of the hinge head (3); the second end of the hinge pin (6) extends into the hinge pin installation countersunk hole (5) and is clamped in the limit stop (8a) at the top of the limit piece (8); When the observation window (2) flips downward around the hinge pin (6) to an upper horizontal state, the limiting mouth (3a) abuts against the lower surface of the limiting crossbeam (7).

2. A hinge structure for a VPX chassis observation window as claimed in claim 1, characterized in that: A connecting ear plate (8b) is integrally formed at the lower end of the limiting member (8); the hinge pin mounting countersunk hole (5) is a countersunk hole with an open lower end, and an ear plate mounting sinker (9) is provided on the bottom surface of the bottom cross beam of the front panel (1) at the mouth of the hinge pin mounting countersunk hole (5); the connecting ear plate (8b) is installed in the ear plate mounting sinker (9) and is connected to the bottom cross beam of the front panel (1) by screws.

3. A hinge structure for a VPX chassis observation window, characterized in that: The invention comprises a front panel (1), an observation window (2) and a hinge pin (6); a hinge block (10) is arranged at the bottom of the observation window (2); a hinge head (3) is integrally formed at the bottom of the hinge block (10); a limit position mouth (3a) is arranged on the hinge head (3); and an anti-collision groove (10b) is arranged on the bottom surface of the hinge block (10); A hinge seat (11) is installed on the bottom crossbeam of the front panel (1), and a hinge head rotation groove (4) and a hinge pin installation countersunk hole (5) are provided on the hinge seat (11), and the hinge pin installation countersunk hole (5) is connected to the hinge head rotation groove (4); a limit crossbeam (7) is provided at the mouth of the hinge head rotation groove (4); The hinge head (3) is installed in the hinge head rotation groove (4); a limit piece (8) is inserted in the hinge pin installation countersunk hole (5); the first end of the hinge pin (6) is inserted in the pin hole on the side of the hinge head (3); the second end of the hinge pin (6) extends into the hinge pin installation countersunk hole (5) and is clamped in the limit stop (8a) at the top of the limit piece (8); When the observation window (2) flips downward around the hinge pin (6) to an upper horizontal state, the limiting mouth (3a) abuts against the lower surface of the limiting crossbeam (7).

4. A hinge structure for a VPX chassis observation window as claimed in claim 3, characterized in that: A first receiving groove (2b) is provided on the bottom surface of the observation window (2); the hinge block (10) is embedded in the first receiving groove (2b); a countersunk through hole (10a) is provided on the hinge block (10), and a first countersunk screw (12) is provided in the countersunk through hole (10a), and the first countersunk screw (12) is screwed on the bottom of the first receiving groove (2b).

5. The hinge structure for the VPX chassis observation window according to claim 3, characterized in that: A first accommodating groove (2b) is provided on the bottom surface of the observation window (2); the hinge block (10) is embedded in the first accommodating groove (2b), and the joint between the hinge block (10) and the first accommodating groove (2b) is connected by welding.

6. The hinge structure for the VPX chassis observation window according to claim 3, characterized in that: A second accommodating groove (1b) is provided on the bottom cross beam of the front panel (1), the hinge seat (11) is embedded in the second accommodating groove (1b), and the hinge seat (11) is fastened to the bottom cross beam of the front panel (1) by a second countersunk screw (13).

7. The hinge structure for a VPX chassis observation window according to claim 3, characterized in that: A second accommodating groove (1b) is provided on the bottom crossbeam of the front panel (1), the hinge seat (11) is embedded in the second accommodating groove (1b), and the joint between the hinge seat (11) and the second accommodating groove (1b) is connected by welding.

8. The hinge structure for a VPX chassis observation window according to claim 3, characterized in that: A connecting ear plate (8b) is integrally formed at the lower end of the limiting member (8); the hinge pin mounting countersunk hole (5) is a countersunk hole with an open lower end, and an ear plate mounting sink (9) is provided on the bottom surface of the hinge seat (11); the connecting ear plate (8b) is mounted in the ear plate mounting sink (9) and is fastened to the hinge seat (11) by screws.

9. A hinge structure for a VPX chassis observation window according to any one of claims 1 to 8, characterized in that: The first end of the hinge pin (6) is configured as a columnar body (6a), and the second end is configured as an octagonal prism (6b); the columnar body (6a) is arranged on one of the vertical side surfaces of the octagonal prism (6b); a process threaded hole (6c) is arranged at the center of the octagonal prism (6b) for installing a process screw (14); the columnar body (6a) is inserted into the pin hole on the side of the hinge head (3); the octagonal prism (6b) is arranged in the hinge pin mounting countersunk hole (5) and is clamped in the limit stop (8a) at the top of the limit member (8).

10. A hinge structure for a VPX chassis observation window according to any one of claims 1 to 8, characterized in that: A clearance groove (2a) is provided on the bottom surface of the observation window (2), and a clearance angle (1a) is provided on the upper edge of the bottom crossbeam of the front panel (1); when the observation window (2) flips around the hinge pin (6), the clearance angle (1a) and the clearance groove (2a) form a clearance with each other.

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