Hinge structure for VPX case observation window

Abstract

The utility model 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 utility model relates to the technical field of electromechanical equipment especially relates to a hinge structure for VPX case observation window. BACKGROUND

[0002] VPX case needs to be provided with an observation window to facilitate observation of the display of the indicator lights of each plug-in module in the case, and the observation window needs to have the functions of perspective, shielding, opening and closing, etc. to facilitate the plugging, replacement and maintenance of each plug-in module.

[0003] In the prior art, a VPX architecture reinforced case with a reversible visual window is disclosed in the patent with the announcement number CN219612275U. A small panel assembly is arranged on the front panel of the VPX architecture reinforced case, the small panel assembly is pivotally installed on the front panel through a plurality of shafts, and is fixed by a plurality of rivet screws. The small panel assembly sequentially comprises a small panel, a shielding pad, a silk screen glass, a rubber pad and a pressing frame from inside to outside, and provides a reversible visual window function through cooperation of these elements.

[0004] In the above prior art, the shaft connection structure can realize the reversing function of the observation window. Specifically, a hinge joint is integrally formed at the bottom of the small panel assembly, an installation groove is arranged on the bottom beam of the front panel, and the hinge joint is connected through the shaft by extending into the installation groove. The simplified schematic structure is shown in Figure 1 When the observation window is in the open state, the outer surface of the hinge joint abuts against the lower edge of the installation groove to limit the observation window, and the contact part is shown as M in the figure. The problems of this limiting method are as follows:

[0005] (1) During the process of opening and closing the observation window multiple times, the number of collisions between the hinge joint and the lower edge of the installation groove increases, which causes the paint on the outer surface of the hinge joint to fall off, thereby affecting the product quality.

[0006] (2) With the increase of the number of collisions, wrinkles are generated at the collision position of the edges of the installation groove, and depressions are easily generated at the collision position of the hinge joint, which seriously affects the product quality.

[0007] (3) When the observation window needs to be opened during equipment installation, debugging or maintenance, a soft object needs to be used to block the position where the collision occurs, thereby affecting the production efficiency and maintainability of the product. INVENTION CONTENTS

[0008] The main purpose of the utility model is to provide a hinge structure for VPX case observation window, which aims to solve the above technical problems.

[0009] In order to achieve the above object, the utility model provides a hinge structure for VPX case observation window, including front panel, observation window and hinge pin, the bottom surface of observation window is integrally formed with hinge joint, and the limit mouth is arranged on the hinge joint, the bottom beam of front panel is provided with hinge joint rotary groove and hinge pin installation counterbore, hinge pin installation counterbore is communicated with hinge joint rotary groove, the mouth of hinge joint rotary groove is provided with limit beam, the hinge joint is installed in hinge joint rotary groove, the limit piece is inserted in hinge pin installation counterbore, the first end of hinge pin is inserted in the pin hole of the side of hinge joint, and the second end of hinge pin is inserted into hinge pin installation counterbore and is clamped in the limit stop in the top of limit piece, when observation window is turned down to the horizontal state around hinge pin, the limit mouth is abutted on the lower surface of limit beam.

[0010] Preferably, the limit piece is integrally formed with a connecting lug at the lower end; the hinge pin installation counterbore is a counterbore with an open lower end, and an lug installation depression is formed in the bottom surface of the bottom beam of the front panel at the position of the mouth of the hinge pin installation counterbore; the connecting lug is installed in the lug installation depression and connected to the bottom beam of the front panel by screws.

[0011] Optionally, a hinge structure for a VPX case observation window includes a front panel, an observation window, and a hinge pin; a hinge block is provided on the bottom of the observation window, a hinge joint is integrally formed on the bottom of the hinge block, and a limit mouth is provided on the hinge joint; a collision prevention groove is provided on the bottom surface of the hinge block; a hinge seat is installed on the bottom beam of the front panel, a hinge joint rotary groove and a hinge pin installation counterbore are formed in the hinge seat, the hinge pin installation counterbore is communicated with the hinge joint rotary groove; a limit beam is provided at the mouth of the hinge joint rotary groove; the hinge joint is installed in the hinge joint rotary groove; a limit piece is inserted in the hinge pin installation counterbore, the first end of the hinge pin is inserted in the pin hole on the side of the hinge joint, and the second end of the hinge pin is inserted into the hinge pin installation counterbore and clamped in the limit stop on the top of the limit piece; when the observation window is turned down to the horizontal state around the hinge pin, the limit mouth is abutted on the lower surface of the limit beam.

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

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

[0014] Preferably, a second accommodating groove is formed in the bottom crossbeam of the front panel, the hinge seat is embedded in the second accommodating groove, and the hinge seat and the bottom crossbeam of the front panel are fastened and connected by a second countersunk screw.

[0015] Optionally, a second accommodating groove is formed in the bottom crossbeam of the front panel, the hinge seat is embedded in the second accommodating groove, and the hinge seat and the second accommodating groove are connected by welding at a joint.

[0016] Preferably, a connecting lug is integrally formed at the lower end of the limiting piece; the hinge pin mounting counterbore is an open-ended counterbore, and a lug mounting counterbore is formed in the bottom surface of the hinge seat; the connecting lug is mounted in the lug mounting counterbore and fastened and connected with the hinge seat by a screw.

[0017] Preferably, the first end of the hinge pin is provided as a columnar body, and the second end is provided as an octagonal prism; the columnar body is arranged on one vertical side of the octagonal prism; a process threaded hole is arranged in the center of the octagonal prism for mounting a process screw; the columnar body is inserted into the pin hole in the side of the hinge joint; and the octagonal prism is arranged in the hinge pin mounting counterbore and clamped in the limiting stopper at the top of the limiting piece.

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

[0019] Thanks to the above technical scheme, the present application has the following advantages:

[0020] (1) By adopting the hinge structure provided by the present application, the limiting mouth on the hinge joint is limited by the limiting crossbeam, and when the observation window is opened, the limiting mouth can abut against the lower surface of the limiting crossbeam, so that the observation window can be kept in a horizontal state, and the hinge joint and the lower edge of the hinge joint rotating groove are prevented from colliding, thus avoiding defects such as collision, scratch and paint removal of the observation window when it is opened and closed, and effectively overcoming the problems in the prior art.

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

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0023] Figure 1 Simplified schematic diagram of the hinge structure in the prior art;

[0024] Figure 2 Overall schematic diagram of the hinge structure according to the first embodiment of the present application;

[0025] Figure 3 Schematic diagram of the hinge joint in the first embodiment of the present application; Figure 2 Enlarged view of A in FIG. 5;

[0026] Figure 4 Schematic diagram of the hinge joint in the first embodiment of the present application; Figure 2 Cross-sectional view of A in FIG. 6 after being enlarged;

[0027] Figure 5 Schematic diagram of the hinge joint installation counterbore in the first embodiment of the present application;

[0028] Figure 6 Schematic diagram of the hinge joint installation counterbore in the first embodiment of the present application;

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

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

[0031] Figure 9 Front view of the limiting piece in the present application;

[0032] Figure 10 Top view of the limiting piece in the present application;

[0033] Figure 11 Schematic diagram of the observation window in the closed state in the first embodiment of the present application;

[0034] Figure 12 Schematic diagram of the observation window in the open state in the first embodiment of the present application;

[0035] Figure 13The whole schematic view of the hinged structure is shown in the second embodiment of the utility model;

[0036] Figure 14 The Figure 13 The sectional view after amplification at B in the middle;

[0037] Figure 15 The structure schematic view of the hinge joint and the hinge block integrally formed in the second embodiment of the utility model;

[0038] Figure 16 The structure schematic view of the hinge block embedded in the first accommodating groove in the second embodiment of the utility model;

[0039] Figure 17 The schematic view of the hinge block and the observation window screw connected in the second embodiment of the utility model;

[0040] Figure 18 The three-dimensional structure of the hinge seat in the second embodiment of the utility model Figure 1 ;

[0041] Figure 19 The three-dimensional structure of the hinge seat in the second embodiment of the utility model Figure 2 ;

[0042] Figure 20 The structure schematic view of the hinge seat embedded in the second accommodating groove in the second embodiment of the utility model;

[0043] Figure 21 The schematic view of the hinge seat and the front panel connected through the second countersunk screw in the second embodiment of the utility model Figure 1 ;

[0044] Figure 22 The schematic view of the hinge seat and the front panel connected through the second countersunk screw in the second embodiment of the utility model Figure 2 ;

[0045] Figure 23 The whole schematic view of the hinged structure is shown in the third embodiment of the utility model;

[0046] Figure 24 The Figure 23 The sectional view after amplification at C in the middle;

[0047] Figure 25 The structure schematic view of the hinge joint and the hinge block integrally formed in the third embodiment of the utility model;

[0048] Figure 26 The schematic view of the hinge block and the observation window welded in the third embodiment of the utility model Figure 1 ;

[0049] Figure 27Schematic view of welding of the hinge block and the observation window in the third embodiment of the present utility model Figure 2 ;

[0050] Figure 28 Schematic view of welding of the hinge seat and the front panel in the third embodiment of the present utility model

[0051] Figure 29 Schematic view of the structure of the hinge pin in the present utility model

[0052] Figure 30 Schematic view of the structure of the hinge pin in the present utility model

[0053] BRIEF DESCRIPTION OF DRAWINGS: 1, front panel; 1a, let go of the bevel; 1b, the second accommodating groove; 2, observation window; 2a, let go of the recess; 2b, the first accommodating groove; 3, hinge; 3a, limit mouth; 4, hinge head rotary groove; 5, hinge pin installation counterbore; 6, hinge pin; 7, limit beam; 8, limit piece; 8a, limit stop; 8b, connecting ear plate; 9, ear plate installation sunken table; 10, hinge block; 10a, countersunk hole; 10b, anti-collision groove; 10c, process groove; 11, hinge seat; 11a, threaded hole; 12, the first countersunk screw; 13, the second countersunk screw; 14, process screw. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0055] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0056] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description and cannot be understood as indicating or implying the relative importance or implying the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0057] Embodiment one:

[0058] In combination with Figure 2 to Figure 12 , and Figure 29 , Figure 30 , the specific embodiment one of the hinge structure for the observation window of the VPX case provided by the present application, the hinge structure, comprising a front panel 1, an observation window 2 and a hinge pin 6; The bottom surface of the observation window 2 is integrally formed with a hinge 3, and a limiting nozzle 3a is arranged on the hinge 3; The bottom beam of the front panel 1 is provided with a hinge rotating groove 4 and a hinge pin mounting counterbore 5, and the hinge pin mounting counterbore 5 is in communication with the hinge rotating groove 4; The mouth of the hinge rotating groove 4 is provided with a limiting beam 7; The hinge 3 is installed in the hinge rotating groove 4; The limiting member 8 is inserted in the hinge pin mounting counterbore 5, the first end of the hinge pin 6 is inserted into the pin hole on the side of the hinge 3, and the second end of the hinge pin 6 extends into the hinge pin mounting counterbore 5 and is clamped in the limiting stop 8a on the top of the limiting member 8.

[0059] In combination with Figure 11 and Figure 12 , when the observation window 2 is turned down to the upper horizontal state around the hinge pin 6, the limiting nozzle 3a abuts against the lower surface of the limiting beam 7.

[0060] In the present embodiment, the hinge 3 and the observation window 3 are integrally formed, that is, the hinge 3 and the observation window 3 are integrally machined, as shown in Figure 8 , the hinge 3 and the observation window 2 are integrally machined, the relative position accuracy of the hinge 3 and the observation window 2 is high, there is no any joint, and the appearance quality is good.

[0061] In combination with Figure 4 , Figure 6 and Figure 9 , the lower end of the limiting member 8 is integrally formed with a connecting lug plate 8b; The hinge pin mounting counterbore 5 is a counterbore with an open lower end, and the lug plate mounting sink 9 is arranged on the bottom surface of the bottom beam of the front panel 1 at the position of the mouth of the hinge pin mounting counterbore 5; The connecting lug plate 8b is installed in the lug plate mounting sink 9 and connected with the bottom beam of the front panel 1 through screws.

[0062] The hinge pin 6 is arranged in the hinge joint 3, and the hinge pin 6 is arranged in the hinge pin mounting counterbore 5. Figure 5 The hinge pin 6 is arranged in the hinge joint 3, and the hinge pin 6 is arranged in the hinge pin mounting counterbore 5. Figure 6 As shown in Figs. 1 and 2, the hinge pin rotating groove 4 and the hinge pin mounting counterbore 5 are directly arranged on the bottom beam of the front panel 1 and are integrally formed with the front panel 1, so that the relative position accuracy of the hinge pin rotating groove 4, the hinge pin mounting counterbore 5 and the front panel 1 is high, there is no joint, and the appearance quality is good.

[0063] The hinge pin 6 is arranged in the hinge joint 3, and the hinge pin 6 is arranged in the hinge pin mounting counterbore 5. Figure 29 The hinge pin 6 is arranged in the hinge joint 3, and the hinge pin 6 is arranged in the hinge pin mounting counterbore 5. Figure 30 As shown in Figs. 1 and 2, the first end of the hinge pin 6 is arranged as a columnar body 6a, and the second end is arranged 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 in the center of the octagonal prism 6b for mounting a process screw 14; the columnar body 6a is inserted into the pin hole in the side surface of the hinge joint 3; and the octagonal prism 6b is arranged in the hinge pin mounting counterbore 5 and is clamped in the limiting stop 8a at the top of the limiting member 8.

[0064] Through the above structure, the octagonal prism 6b is clamped in the limiting stop 8a, which limits the hinge pin 6. The process threaded hole 6c is an M3 threaded hole. Due to the small space of the hinge pin mounting counterbore 5, the hinge pin 6 cannot be simply assembled by using fingers, pliers or tweezers. During assembly, the M3×20 process screw 14 is screwed into the M3 process threaded hole 6c, the hinge pin 6 is sent into the hinge pin mounting counterbore 5 by the process screw 14, the columnar body 6a of the hinge pin 6 is inserted into the pin hole in the side surface of the hinge joint 3, the process screw 14 is finally unscrewed and removed, and then the limiting member 8 is assembled into the hinge pin mounting counterbore 5.

[0065] The hinge pin 6 is arranged in the hinge joint 3, and the hinge pin 6 is arranged in the hinge pin mounting counterbore 5. Figure 5 The hinge pin 6 is arranged in the hinge joint 3, and the hinge pin 6 is arranged in the hinge pin mounting counterbore 5. Figure 8 As shown in Figs. 1 and 2, the bottom surface of the observation window 2 is provided with a giving recess 2a, and the upper edge of the bottom beam of the front panel 1 is provided with a giving bevel 1a; when the observation window 2 is flipped around the hinge pin 6, the giving bevel 1a and the giving recess 2a form a giving position to each other. Through the arrangement of the giving recess 2a and the giving bevel 1a, the bottom surface of the observation window 2 can avoid interference with the upper edge of the bottom beam of the front panel 1 when the observation window 2 is rotated.

[0066] Example two:

[0067] The hinge pin 6 is arranged in the hinge joint 3, and the hinge pin 6 is arranged in the hinge pin mounting counterbore 5. Figure 13 to Figure 22 The hinge pin 6 is arranged in the hinge joint 3, and the hinge pin 6 is arranged in the hinge pin mounting counterbore 5. Figure 29 The hinge pin 6 is arranged in the hinge joint 3, and the hinge pin 6 is arranged in the hinge pin mounting counterbore 5. Figure 30The utility model provides a hinge structure for VPX case observation window two specific embodiments shown in the utility model provides a hinge structure for VPX case observation window, including front panel 1, observation window 2 and hinge pin 6, the bottom of observation window 2 is provided with hinge block 10, and the bottom of hinge block 10 is integrally formed with hinge joint 3, and the hinge joint 3 is provided with limit mouth 3a, the bottom crossbeam of front panel 1 is installed with hinge seat 11, hinge joint rotary groove 4 and hinge pin installation counterbore 5 are seted up on hinge seat 11, hinge pin installation counterbore 5 is communicated with hinge joint rotary groove 4, the mouth of hinge joint rotary groove 4 is provided with limit crossbeam 7, hinge joint 3 is installed in hinge joint rotary groove 4, limit piece 8 is inserted in hinge pin installation counterbore 5, the first end of hinge pin 6 is inserted in the pin hole of the side of hinge joint 3, and the second end of hinge pin 6 extends into hinge pin installation counterbore 5 and is clamped in the limit stop 8a in the top of limit piece 8.

[0068] When observation window 2 is turned down to the upper horizontal state around hinge pin 6, limit mouth 3a abuts on the lower surface of limit crossbeam 7. Figure 12 The structure of mutual limit between limit mouth 3a and limit crossbeam 7 is similar to that in embodiment one, and will not be repeated here.

[0069] In combination Figure 15 to Figure 17 As shown, the bottom surface of observation window 2 is provided with first accommodating groove 2b, hinge block 10 is embedded in first accommodating groove 2b, counterbore through hole 10a is arranged on hinge block 10, first counterbore screw 12 is arranged in counterbore through hole 10a, and first counterbore screw 12 is screwed on the groove bottom of first accommodating groove 2b. In this embodiment, hinge block 10 and observation window 2 are fastened in the screw connection mode, which has low processing difficulty and is suitable for mass production.

[0070] In combination Figure 15 As shown, anti-collision groove 10b is arranged on the bottom surface of hinge block 10, and when hinge block 10 rotates around hinge pin 6, anti-collision groove 10b plays a role of giving way to avoid interference between the bottom surface of hinge block 10 and the edge of hinge seat 11.

[0071] In combination Figure 20 to 22 As shown, second accommodating groove 1b is arranged on the bottom crossbeam of front panel 1, hinge seat 11 is embedded in second accommodating groove 1b, and hinge seat 11 and the bottom crossbeam of front panel 1 are fastened and connected through second counterbore screw 13. Specifically, second counterbore screw 13 is transversely threaded through front panel 1 and is screwed on the threaded hole in the side of hinge seat 11. Hinge seat 11 and front panel 1 are fastened in the screw connection mode, which has low processing difficulty and is suitable for mass production.

[0072] In combination Figure 9 , Figure 14 andFigure 19 The connecting lug 8b is integrally formed at the lower end of the limiting member 8. The hinge pin mounting counterbore 5 is a counterbore with an open lower end. The lug mounting counterbore 9 is formed in the bottom surface of the hinge seat 11. The connecting lug 8b is mounted in the lug mounting counterbore 9 and fastened to the hinge seat 11 by screws.

[0073] In combination Figure 29 , Figure 30 The first end of the hinge pin 6 is provided as a cylindrical body 6a and the second end is provided as an octagonal prism 6b. The cylindrical body 6a is arranged on one of the vertical side surfaces of the octagonal prism 6b. A process threaded hole 6c is arranged in the center of the octagonal prism 6b for mounting a process screw 14. The cylindrical body 6a is inserted into the pin hole in the side surface of the hinge head 3. The octagonal prism 6b is arranged in the hinge pin mounting counterbore 5 and clamped in the limiting stop 8a at the top of the limiting member 8. In this second embodiment, the cylindrical body 6a and the octagonal prism 6b of the hinge pin 6 have the same functions as in the first embodiment, which will not be described again.

[0074] In combination Figure 16 , Figure 20 A clearance groove 2a is arranged in the bottom surface of the observation window 2. A clearance bevel 1a is arranged on the upper edge of the bottom crossbeam of the front panel 1. When the observation window 2 is flipped around the hinge pin 6, the clearance bevel 1a and the clearance groove 2a form clearance with each other. By arranging the clearance groove 2a and the clearance bevel 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 it is rotated.

[0075] In combination Figure 15 A process groove 10c is arranged on the opposite side of the hinge block 10 to meet the space requirement for tool path when the hinge head 3 is processed.

[0076] Embodiment three:

[0077] In combination Figure 23 to Figure 30The hinge structure for the observation window of the VPX case provided by the utility model 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 joint 3 is integrally formed at the bottom of the hinge block 10, and a limiting nozzle 3a is arranged on the hinge joint 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 beam of the front panel 1, a hinge joint rotary groove 4 and a hinge pin installation counterbore 5 are formed in the hinge seat 11, the hinge pin installation counterbore 5 is communicated with the hinge joint rotary groove 4, and a limiting beam 7 is arranged at the opening of the hinge joint rotary groove 4; the hinge joint 3 is installed in the hinge joint rotary groove 4; a limiting piece 8 is inserted in the hinge pin installation counterbore 5, the first end of the hinge pin 6 is inserted into the pin hole in the side of the hinge joint 3, the second end of the hinge pin 6 is inserted into the hinge pin installation counterbore 5 and is clamped in the limiting stop 8a at the top of the limiting piece 8; when the observation window 2 is turned down to the horizontal state around the hinge pin 6, the limiting nozzle 3a is abutted against the lower surface of the limiting beam 7. Figure 12 The structure of limiting nozzle 3a and limiting beam 7 is similar to that in the first embodiment, and thus will not be repeated here.

[0078] In the utility model, the structure of the hinge seat 11 in the third embodiment is similar to that in the second embodiment, and the difference lies in that the hinge seat 11 in the second embodiment is provided with a threaded hole on the side surface for being connected with the second countersunk screw 13, and the side surface of the hinge seat 11 in the third embodiment is not provided with a threaded hole.

[0079] 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. Figure 25 to 27 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.

[0080] 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. Figure 28 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.

[0081] 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. Figure 9 ,Figure 14 and Figure 19 As shown in the drawings, the connecting lug 8b is integrally formed at the lower end of the limiting member 8; the hinge pin mounting counterbore 5 is a counterbore with an open lower end, and the ear plate mounting counterbore 9 is formed in the bottom surface of the hinge seat 11; the connecting lug 8b is mounted in the ear plate mounting counterbore 9 and fastened to the hinge seat 11 by screws.

[0082] As shown in the drawings, Figure 29 , Figure 30 As shown in the drawings, the first end of the hinge pin 6 is provided as a cylindrical body 6a, and the second end is provided as an octagonal prism 6b; the cylindrical body 6a is arranged on one of the vertical side surfaces of the octagonal prism 6b; a process threaded hole 6c is arranged in the center of the octagonal prism 6b for mounting a process screw 14; the cylindrical body 6a is inserted into the pin hole in the side surface of the hinge head 3; and the octagonal prism 6b is arranged in the hinge pin mounting counterbore 5 and clamped in the limiting stop 8a at the top of the limiting member 8. In this embodiment, the cylindrical body 6a and the octagonal prism 6b of the hinge pin 6 have the same effect as in the first embodiment, and will not be described again here.

[0083] As shown in the drawings, Figure 26 , Figure 28 As shown in the drawings, the bottom surface of the observation window 2 is provided with a clearance groove 2a, and the upper edge of the bottom crossbeam of the front panel 1 is provided with a clearance bevel 1a; when the observation window 2 is flipped around the hinge pin 6, the clearance bevel 1a and the clearance groove 2a form a clearance with each other. By providing the clearance groove 2a and the clearance bevel 1a, the bottom surface of the observation window 2 can avoid interference with the upper edge of the bottom crossbeam of the front panel 1 when it is rotated.

[0084] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields within the concept of the present application and the contents of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A hinge structure for a VPX chassis viewing window, comprising: It comprises a front panel (1), an observation window (2) and a hinge pin (6); a hinge joint (3) is integrally formed on the bottom surface of the observation window (2), and a limiting nozzle (3a) is arranged on the hinge joint (3); A hinge joint rotating groove (4) and a hinge pin mounting counterbore (5) are arranged on the bottom beam of the front panel (1), and the hinge pin mounting counterbore (5) is in communication with the hinge joint rotating groove (4); a limiting beam (7) is arranged at the mouth of the hinge joint rotating groove (4); The hinge joint (3) is mounted in the hinge joint rotating groove (4); a limiting piece (8) is inserted in the hinge pin mounting counterbore (5), the first end of the hinge pin (6) is inserted into the pin hole on the side of the hinge joint (3), and the second end of the hinge pin (6) extends into the hinge pin mounting counterbore (5) and is clamped in the limiting stop (8a) on the top of the limiting piece (8); When the observation window (2) is turned down to the horizontal state around the hinge pin (6), the limiting nozzle (3a) abuts against the lower surface of the limiting beam (7).

2. A hinge structure for a VPX chassis viewing window as claimed in claim 1, wherein, A connecting lug plate (8b) is integrally formed at the lower end of the limiting piece (8); the hinge pin mounting counterbore (5) is a counterbore with an open lower end, an lug plate mounting counter-sink (9) is arranged on the bottom surface of the bottom beam of the front panel (1) at the position of the mouth of the hinge pin mounting counterbore (5); the connecting lug plate (8b) is mounted in the lug plate mounting counter-sink (9) and connected with the bottom beam of the front panel (1) by screws.

3. A hinge structure for a VPX chassis viewing window, characterized by, It comprises a front panel (1), an observation window (2) and a hinge pin (6); a hinge block (10) is arranged on the bottom of the observation window (2), a hinge joint (3) is integrally formed on the bottom of the hinge block (10), and a limiting nozzle (3a) is arranged on the hinge joint (3); a collision prevention groove (10b) is arranged on the bottom surface of the hinge block (10); A hinge seat (11) is mounted on the bottom beam of the front panel (1), a hinge joint rotating groove (4) and a hinge pin mounting counterbore (5) are arranged on the hinge seat (11), and the hinge pin mounting counterbore (5) is in communication with the hinge joint rotating groove (4); a limiting beam (7) is arranged at the mouth of the hinge joint rotating groove (4); The hinge joint (3) is mounted in the hinge joint rotating groove (4); a limiting piece (8) is inserted in the hinge pin mounting counterbore (5), the first end of the hinge pin (6) is inserted into the pin hole on the side of the hinge joint (3), and the second end of the hinge pin (6) extends into the hinge pin mounting counterbore (5) and is clamped in the limiting stop (8a) on the top of the limiting piece (8); When the observation window (2) is turned down to the horizontal state around the hinge pin (6), the limiting nozzle (3a) abuts against the lower surface of the limiting beam (7).

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

5. A hinge structure for a VPX chassis viewing window as claimed in claim 3, wherein, The first accommodating groove (2b) is arranged on the bottom surface of the observation window (2), and 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. A hinge structure for a VPX chassis viewing window as claimed in claim 3, wherein, The second accommodating groove (1b) is arranged on the bottom beam of the front panel (1), the hinge block (11) is embedded in the second accommodating groove (1b), and the hinge block (11) and the bottom beam of the front panel (1) are connected by the second countersunk screw (13).

7. A hinge structure for a VPX chassis viewing window as defined in claim 3, wherein, The second accommodating groove (1b) is arranged on the bottom beam of the front panel (1), the hinge block (11) is embedded in the second accommodating groove (1b), and the joint between the hinge block (11) and the second accommodating groove (1b) is connected by welding.

8. A hinge structure for a VPX chassis viewing window as claimed in claim 3, wherein, The connecting lug (8b) is integrally formed on the lower end of the limiting piece (8), the hinge pin mounting counterbore (5) is a counterbore with an open lower end, the lug mounting counterbore (9) is arranged on the bottom surface of the hinge block (11), the connecting lug (8b) is mounted in the lug mounting counterbore (9) and is connected with the hinge block (11) by a screw.

9. A hinge structure for a VPX chassis viewing window as claimed in any one of claims 1 to 8, wherein, The first end of the hinge pin (6) is provided as a columnar body (6a), and the second end is provided 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 in the center of the octagonal prism (6b) for mounting a process screw (14); the columnar body (6a) is inserted into the pin hole in the side surface of the hinge joint (3); the octagonal prism (6b) is arranged in the hinge pin mounting counterbore (5) and is clamped in the limiting stop (8a) at the top of the limiting piece (8).

10. A hinge structure for a VPX chassis viewing window as claimed in any one of claims 1 to 8, wherein, The clearance groove (2a) is arranged on the bottom surface of the observation window (2), and the clearance bevel (1a) is arranged on the upper edge of the bottom beam of the front panel (1); when the observation window (2) is flipped around the hinge pin (6), the clearance bevel (1a) and the clearance groove (2a) form clearance with each other.

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