Case and measuring equipment

Abstract

The invention belongs to the technical field of computers, and discloses a case and a measuring device.The case comprises a case body used for installing a plug-pull piece, a shielding assembly and a locking assembly, the locking assembly comprises a sliding support and a locking mechanism, the sliding support is connected to the case body, and the shielding assembly can reciprocate along a guide rail of the sliding support; the shielding assembly has a first working state for shielding the plugging piece to limit the plugging piece to be separated from the mounting cavity and a second working state for avoiding the plugging piece, the locking mechanism is used for locking the sliding support and the shielding assembly to limit the shielding assembly to move relative to the sliding support, and the locking mechanism has a locking state and an unlocking state; when the locking mechanism is in a locking state, the shielding assembly is in a first working state or a second working state, and when the locking mechanism is in an unlocking state, the shielding assembly can move along the guide rail so as to be switched between the first working state and the second working state. According to the invention, reliable locking and convenient plugging operation of the plugging member can be realized, and the safety and the convenience are improved.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, in particular to a chassis and a measuring device. Background Art

[0002] The PXIe signal processing platform is an electronic measuring instrument used in the field of electronics and communication technology. It is an expansion device of the PXI (PCI Extensions for Instrumentation) signal processing platform based on PCI Express (PCIe) technology. The chassis of the PXIe signal processing platform is equipped with a main circuit board and multiple daughter cards. The daughter card is inserted into the main circuit board and needs to be repaired and replaced during use. In order to facilitate the disassembly and assembly of the daughter card, the chassis usually has an inspection port and a shielding plate with a card anti-theft structure is set to ensure the safety of the daughter card and prevent the daughter card from being accidentally inserted or lost. After the card anti-theft structure is unlocked, the shielding plate is in a free state and the daughter card can be inserted and removed; when the card anti-theft structure is locked, the shielding plate is in a fixed state, the daughter card is blocked, and the daughter card cannot be inserted and removed. However, after the card anti-theft structure is unlocked, the shielding plate in the free state will swing at will, which will hinder the smoothness of the daughter card to a certain extent, and when the daughter card is reinstalled, the shielding plate needs to be supported or fixed, which is inconvenient to operate. Summary of the invention

[0003] An object of the present invention is to provide a chassis that can solve the problem that the existing shielding plate of the chassis is in a free state after the card insertion anti-theft structure is unlocked, which hinders the smoothness of extracting the sub-card and causes inconvenience in reinstalling the sub-card.

[0004] To achieve this object, the present invention adopts the following technical solutions on one hand:

[0005] A chassis is provided for installing a plug-in component, the chassis includes a case body, the case body has an installation cavity and an opening connected to the installation cavity, the plug-in component can be pluggably arranged in the installation cavity through the opening, the chassis also includes a shielding component and a locking component, the locking component includes a sliding bracket and a locking mechanism, the sliding bracket is connected to the case body, the shielding component can reciprocate along the guide rail of the sliding bracket, the shielding component has a first working state of shielding the plug-in component to limit the plug-in component from being separated from the installation cavity, and a second working state of avoiding the plug-in component, the locking mechanism is used to lock the sliding bracket and the shielding component to limit the shielding component from moving relative to the sliding bracket, the locking mechanism has a locked state and an unlocked state, when the locking mechanism is in the locked state, the shielding component is in the first working state or the second working state, when the locking mechanism is in the unlocked state, the shielding component can move along the guide rail to switch between the first working state and the second working state.

[0006] In one embodiment, the shielding assembly includes a rotatably connected shielding plate and a locking plate, and the sliding bracket also includes a first mounting plate and a second mounting plate connected to each other, the first mounting plate is arranged at the edge of the box body and is located on one side of the opening, and the second mounting plate is closely connected to the outer wall of the box body, when the shielding assembly is in a first working state, the locking mechanism is configured to lock the locking plate and the first mounting plate, and the shielding plate at least blocks part of the opening to constrain the plug-in component in the mounting cavity; when the shielding assembly is in a second working state, the locking mechanism is configured to lock the locking plate and the second mounting plate, and the shielding plate is away from the opening to avoid the plug-in component.

[0007] In one embodiment, the guide rails are arranged on both sides of the first mounting plate and extend along the height direction of the box; and / or,

[0008] When the shielding assembly is switched from the second working state to the first working state, the shielding plate slides along the guide rail and drives the locking plate to flip and be slidably connected to the guide rail, and the end of the shielding plate facing the locking plate has a stop plane, and the stop plane abuts against the locking plate to limit the flipping of the locking plate; and / or,

[0009] A first limiting portion is provided on one end of the shielding plate away from the locking plate, and a second limiting portion is provided on one end of the locking plate away from the shielding plate. The guide rail has a first end and a second end that are relatively arranged along the length direction. When the shielding assembly is in the first working state, the second limiting portion abuts against the second end to limit the movement of the shielding assembly along the length direction of the guide rail; when the shielding assembly is in the second working state, the first limiting portion abuts against the first end to limit the movement of the shielding assembly along the length direction of the guide rail.

[0010] In one embodiment, the locking mechanism includes a locking piece and a first locking hole and a second locking hole opened on the sliding bracket, and a mounting hole is opened on the shielding assembly. The locking piece is movably inserted into the mounting hole. When the locking mechanism is in a locked state, the locking piece is locked to the first locking hole to keep the shielding assembly in the first working state, or the locking piece is locked to the second locking hole to keep the shielding assembly in the second working state.

[0011] In one embodiment, the locking member includes a knob and a locking shaft, a clamping column is provided at the end of the locking shaft, the locking shaft passes through the mounting hole to connect to the knob, the first locking hole and the second locking hole both have a long diameter end and a short diameter end, the clamping column can pass through the long diameter end and rotate to be located at the short diameter end, and the short diameter end can limit the clamping column from detaching from the sliding bracket.

[0012] In one of the embodiments, a limiting groove connected to the short diameter end is provided on the side of the sliding bracket facing away from the knob. When the clamping column is located at the short diameter end, the clamping column can be clamped in the limiting groove. The limiting groove is configured to limit the axial rotation of the clamping column around the locking axis to the long diameter end.

[0013] In one of the embodiments, when the locking mechanism is in a locked state, the locking piece can move axially toward the sliding bracket to make the clamping column disengage from the limiting groove, and the locking piece also includes a reset elastic piece, one end of the reset elastic piece is connected to the knob, and the other end can abut the sliding bracket, and the reset elastic piece always has a tendency to push the knob to make the locking piece move in a direction away from the sliding bracket.

[0014] In one embodiment, a receiving groove communicating with the mounting hole is provided on a side of the shielding assembly facing away from the sliding bracket, the locking mechanism is in a locked state, and the knob is embedded in the receiving groove and does not protrude from the receiving groove; and / or,

[0015] An unlocking portion is provided at the end of the knob facing away from the locking shaft, and the unlocking portion is configured to engage an unlocking tool, and the unlocking tool is used to apply torque to the locking member; and / or,

[0016] The sliding bracket is provided with a guiding slope, which is arranged around the first locking hole and the second locking hole. The clamping column rotates to abut against the guiding slope, and the guiding slope is inclined from the long diameter end to the short diameter end toward the direction away from the shielding component to guide the clamping column.

[0017] In one embodiment, the sliding bracket further includes a plurality of balls, the guide rail is an annular guide rail, the central axis of the annular guide rail is perpendicular to the moving direction of the shielding component, the shielding component is provided with a rolling groove, a plurality of the balls are embedded in the guide rail, a portion of the balls protrudes from the guide rail and is clamped in the rolling groove, and the balls are rollingly connected to the shielding component so that the shielding component reciprocates along the guide rail; or,

[0018] One of the guide rail and the shielding assembly is provided with a sliding groove, and the other is provided with a slider, and the slider is slidably embedded in the sliding groove; or,

[0019] The shielding assembly is provided with a pulley, the guide rail is provided with a slideway, and the pulley is slidably connected to the slideway.

[0020] Another object of the present invention is to provide a measuring device having a chassis that can solve the problem that the existing shielding plate is in a free state after the card insertion anti-theft structure is unlocked, hindering the smoothness of withdrawing the sub-card and causing inconvenience in reinstalling the sub-card.

[0021] To achieve this object, the present invention adopts the following technical solution on the other hand:

[0022] A measuring device is provided, comprising the chassis as described above, and also comprising a plug-in component, wherein the plug-in component is pluggably disposed in a mounting cavity of the chassis through an opening of the chassis.

[0023] Beneficial effects of the present invention:

[0024] The chassis provided by the present invention has a locking assembly including a sliding bracket and a locking mechanism. The sliding bracket is connected to the case body, and the shielding assembly can reciprocate along the guide rail of the sliding bracket. The shielding assembly has a first working state for shielding the plug-in to limit the plug-in from being separated from the installation cavity, and a second working state for avoiding the plug-in. When the shielding assembly is in the first working state, the plug-in is shielded by the shielding assembly and cannot be plugged in or out through the opening of the installation cavity, thereby avoiding safety risks caused by the loss or mis-plugging of the plug-in. When the shielding assembly is in the second working state, the shielding assembly and the plug-in avoid each other, and the plug-in can be directly plugged in and out, which is easy to operate. The locking mechanism is used to lock the sliding bracket and the shielding assembly to limit the movement of the shielding assembly relative to the sliding bracket. The locking mechanism has a locked state and an unlocked state. When the locking mechanism is in the locked state, the shielding assembly is in the first working state or the second working state, and the shielding assembly is restricted from moving without shaking. In the first working state, the reliability of shielding the plug-in component can be ensured, and the locking safety is improved; in the second working state, the plug-in and pull-out operations of the shielding assembly are avoided, and the convenience of operation is improved. When the locking mechanism is in the unlocked state, the shielding assembly can move along the guide rail to switch between the first working state and the second working state, and the working state conversion is convenient and fast.

[0025] The measuring device provided by the present invention includes the above-mentioned chassis. When the shielding component of the chassis is in the second working state, the shielding component and the plug-in component avoid each other, and the plug-in component can be directly plugged in and out, which is easy to operate; when the shielding component is in the first working state, the plug-in component is blocked by the shielding component and cannot be plugged in or out, avoiding the safety risks caused by missed or incorrect plugging and unplugging; when the locking mechanism is in the locked state, the shielding component in the first working state or the second working state is restricted from moving and will not shake; when the locking mechanism is in the unlocked state, the shielding component can easily and quickly switch the working state, thereby improving the safety and convenience of using the PXIe signal processing platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a chassis provided by an embodiment of the present invention when the shielding component is in a first working state;

[0027] Figure 2 is a structural schematic diagram of a chassis provided by an embodiment of the present invention when the shielding component is in a second working state;

[0028] Figure 3 The structure disassembly diagram of the shielding assembly and the locking assembly provided in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 4 is a structural front view of a shielding assembly provided by an embodiment of the present invention in a first working state;

[0030] Figure 5 yes Figure 4 The cross-sectional view along the AA direction;

[0031] Figure 6 is a structural perspective view of a shielding assembly provided by an embodiment of the present invention in a second working state;

[0032] Figure 7 yes Figure 6 The cross-sectional view along the BB direction;

[0033] Figure 8 is a structural cross-sectional view of a shielding assembly and a locking assembly in an unlocked state provided by an embodiment of the present invention;

[0034] Fig. 9 is a schematic diagram of the structural disassembly of a locking member provided by an embodiment of the present invention;

[0035] Fig.10 The structure disassembly diagram of the shielding assembly and the locking assembly provided in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0036] Fig.11 yes Fig.10 A magnified schematic diagram of the local structure of part C in the middle;

[0037] Fig.12 is a schematic diagram of the structural disassembly of the shielding assembly and the locking assembly provided by an embodiment of the present invention from another perspective;

[0038] Fig.13 yes Fig.12 Schematic diagram of the enlarged local structure of part D.

[0039] In the figure:

[0040] 1. Box body; 11. Installation cavity; 12. Outer wall;

[0041] 3. Shielding assembly; 31. Shielding plate; 311. Stopping plane; 312. First limiting portion; 32. Locking plate; 321. Second limiting portion; 33. Mounting hole; 34. Accommodating groove; 35. Rolling groove;

[0042] 4. Locking assembly; 41. Sliding bracket; 411. Guide rail; 4111. First end; 4112. Second end; 412. First mounting plate; 4121. Main body plate; 4122. Upper cover plate; 4123. Lower cover plate; 413. Second mounting plate; 414. Guide slope; 415. Ball; 42. Locking mechanism; 421. Locking piece; 4211. Knob; 42111. Unlocking part; 4212. Locking shaft; 4213. Clamping column; 4214. Resetting elastic piece; 422. First locking hole; 4221. Long diameter end; 4222. Short diameter end; 4223. Limiting groove; 423. Second locking hole; 100. Plug and pull piece. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It is also necessary to explain that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0047] like Figure 1 and Figure 2 As shown, this embodiment first provides a chassis, the chassis is used to install a plug-in component 100, and the plug-in component 100 includes but is not limited to a structure such as a daughter card that can be inserted into and connected to a main circuit board. The chassis includes a case body 1, the case body 1 has an installation cavity 11 and an opening connected to the installation cavity 11, and the plug-in component 100 can be pluggably arranged in the installation cavity 11 through the opening. The chassis can be applied to a computer, and can also be applied to other measurement equipment with a plug-in daughter card structure, such as a plug-in card-type PXIe modular device.

[0048] The chassis also includes a shielding component 3 and a locking component 4, and the locking component 4 includes a sliding bracket 41 and a locking mechanism 42. The sliding bracket 41 is connected to the case 1, and the shielding component 3 can reciprocate along the guide rail 411 of the sliding bracket 41. The shielding component 3 has a first working state of shielding the plug-in component 100 to limit the plug-in component 100 from being separated from the installation cavity 11, and a second working state of avoiding the plug-in component 100. When the shielding component 3 is in the first working state, the plug-in component 100 is shielded by the shielding component 3 and cannot be plugged in or unplugged through the opening of the installation cavity 11, thereby avoiding the safety risks caused by the loss or mis-plugging of the plug-in component 100. When the shielding component 3 is in the second working state, the shielding component 3 and the plug-in component 100 avoid each other, and the plug-in component 100 can be directly plugged in and unplugged, which is convenient to operate. The locking mechanism 42 is used to lock the sliding bracket 41 and the shielding assembly 3 to limit the movement of the shielding assembly 3 relative to the sliding bracket 41. The locking mechanism 42 has a locked state and an unlocked state. When the locking mechanism 42 is in the locked state, the shielding assembly 3 is in the first working state or the second working state, and the shielding assembly 3 is restricted from moving without shaking. In the first working state, the reliability of shielding the plug-in component 100 can be ensured, thereby improving the safety of use; in the second working state, the plug-in and pull-out operations of the shielding assembly 3 are avoided, thereby improving the convenience of operation. When the locking mechanism 42 is in the unlocked state, the shielding assembly 3 can move along the guide rail 411 to switch between the first working state and the second working state, and the working state switching is convenient and fast.

[0049] In one embodiment, if Figure 3 As shown, the shielding assembly 3 includes a rotatably connected shielding plate 31 and a locking plate 32. The sliding bracket 41 is arranged at the edge of the opening, and the sliding bracket 41 also includes a first mounting plate 412 and a second mounting plate 413 connected to each other. The first mounting plate 412 is arranged at the edge of the box body 1 and is located on one side of the opening, and the second mounting plate 413 is connected to the outer side wall 12 of the box body 1. When the shielding assembly 3 is in the first working state, the locking mechanism 42 is configured to lock the locking plate 32 and the first mounting plate 412, and the shielding plate 31 at least blocks part of the opening to constrain the plug-in component 100 in the installation cavity 11; when the shielding assembly 3 is in the second working state, the locking mechanism 42 is configured to lock the locking plate 32 and the second mounting plate 413, and the shielding plate 31 is away from the opening to avoid the plug-in component 100. Locking and unlocking by the locking plate 32 avoids damaging the structural integrity of the shielding plate 31 and ensures the shielding reliability of the shielding plate 31. Moreover, whether in the first working state or the second working state, the first mounting plate 412 and the second mounting plate 413 used to lock the locking plate 32 do not interfere with the opening of the box body 1, and there is no need to set a structural part for locking inside the box body 1, which will not affect the performance and internal structure of the chassis.

[0050] Specifically, the guide rails 411 are arranged on both sides of the first mounting plate 412 and extend in the height direction of the box body 1. In one embodiment, when the shielding assembly 3 is in the second working state, the shielding plate 31 and the first mounting plate 412 are overlapped to avoid the opening, and the shielding plate 31 is restricted by the locked locking plate 32 and cannot move along the guide rails 411 or detach from the guide rails 411, and maintains a relatively fixed state, thereby avoiding affecting the plugging and unplugging operation of the plug-in component 100. The overlapping shielding plate 31 and the first mounting plate 412 are more beautiful and occupy less space.

[0051] In order to improve the convenience of the working state conversion of the shielding assembly 3, when the shielding assembly 3 is converted from the second working state to the first working state, the shielding plate 31 slides along the guide rail 411, and the guide rail 411 drives the locking plate 32 to flip and slide to connect to the guide rail 411, that is, after the locking plate 32 and the second mounting plate 413 are unlocked, the locking plate 32 is relatively free on the second mounting plate 413, and the shielding plate 31 slides along the guide rail 411 to drive the locking plate 32 to flip until it slides to connect to the guide rail 411. The end of the shielding plate 31 facing the locking plate 32 has a stop plane 311, such as Figure 7 The stop plane 311 can abut against the locking plate 32 to limit the locking plate 32 from turning over, thereby preventing the locking plate 32 from turning over too much and failing to connect to the guide rail 411 smoothly.

[0052] Optionally, in one embodiment, the shielding assembly 3 is disposed above the opening along the height direction of the box body 1, so that the shielding assembly 3 shields the upper part of the plug-in component 100, such as Figure 2 As shown, in this way, when the locking mechanism 42 is in the unlocked state, when the shielding assembly 3 is converted from the second working state to the first working state, the locking plate 32 can be pulled to flip and connect to the guide rail 411 to slide under the gravity traction of the shielding plate 31, and the state conversion is faster and more efficient.

[0053] In order to prevent the shielding assembly 3 from over-sliding, a first limiting portion 312 is provided on the end of the shielding plate 31 away from the locking plate 32, and a second limiting portion 321 is provided on the end of the locking plate 32 away from the shielding plate 31. The guide rail 411 has a first end portion 4111 and a second end portion 4112 that are arranged opposite to each other along the length direction. When the shielding assembly 3 is in the first working state, the second limiting portion 321 abuts against the second end portion 4112 to limit the movement of the shielding assembly 3 along the length direction of the guide rail 411. Figure 5 When the shielding assembly 3 is in the second working state, the first limiting portion 312 abuts against the first end portion 4111 to limit the movement of the shielding assembly 3 along the length direction of the guide rail 411, such as Figure 6As shown. The accuracy of the position of the shielding assembly 3 is ensured by the limiting of the first limiting portion 312 and the second limiting portion 321. Exemplarily, the first limiting portion 312 is a convex block protruding from the shielding plate 31, and the second limiting portion 321 is a convex block protruding from the locking plate 32. Correspondingly, the first end portion 4111 and the second end portion 4112 are both provided with inclined surfaces to respectively abut against the two limiting convex blocks.

[0054] Specifically, refer to Figures 4 to 8 The locking mechanism 42 includes a locking member 421 and a first locking hole 422 and a second locking hole 423 provided on the sliding bracket 41. The shielding component 3 is provided with a mounting hole 33 (refer to Figure 3 ), the locking member 421 is movably disposed in the mounting hole 33. When the locking mechanism 42 is in the locked state, the locking member 421 is locked to the first locking hole 422 to keep the shielding assembly 3 in the first working state (such as Figure 5 Alternatively, the locking member 421 is locked to the second locking hole 423 to keep the shielding assembly 3 in the second working state (as shown in FIG. Figure 7 shown).

[0055] In order to make the locking member 421 have both the reliability of locking and the convenience of unlocking, Figure 8 and Fig. 9 As shown, the locking member 421 includes a knob 4211 and a locking shaft 4212, and a radially protruding clamping column 4213 is provided at the end of the locking shaft 4212. The locking shaft 4212 passes through the mounting hole 33 to connect the knob 4211. The first locking hole 422 and the second locking hole 423 both have a long diameter end 4221 and a short diameter end 4222. The clamping column 4213 can pass through the long diameter end 4221 and rotate to be located at the short diameter end 4222. The short diameter end 4222 can limit the clamping column 4213 from being separated from the sliding bracket 41. Preferably, the clamping column 4213 is T-shaped, and the symmetrical structure makes the clamping of the clamping column 4213 and the first locking hole 422 and the second locking hole 423 more stable.

[0056] In one embodiment, if Figures 10 to 13 As shown, a limiting groove 4223 connected to the short diameter end 4222 is provided on the side of the sliding bracket 41 away from the knob 4211. When the clamping column 4213 is located at the short diameter end 4222, the clamping column 4213 can be clamped in the limiting groove 4223. The limiting groove 4223 is configured to limit the axial rotation of the clamping column 4213 around the locking shaft 4212 to the long diameter end 4221, thereby improving the locking reliability of the locking mechanism 42.

[0057] When the locking mechanism 42 needs to be unlocked, the locking member 421 can move axially toward the sliding bracket 41 to disengage the clamping column 4213 from the limiting groove 4223, and then the locking member 421 is rotated to rotate the clamping column 4213 to the long diameter end 4221 to disengage the sliding bracket 41. In order to quickly reset the locking member 421 that moves axially, the locking member 421 further includes a reset elastic member 4214, one end of which is connected to the knob 4211 and the other end of which can abut against the sliding bracket 41. The reset elastic member 4214 always has a tendency to push against the knob 4211 to move the locking member 421 in a direction away from the sliding bracket 41.

[0058] Specifically, the resetting elastic member 4214 is a compression spring. When the locking member 421 moves axially toward the sliding bracket 41 to unlock, the compression spring is compressed to generate elastic force. When the clamping column 4213 is separated from the limiting groove 4223, the elastic force of the compression spring pushes the locking member 421 to move in the opposite direction to return to the initial position, so as to prepare for the next rotation and locking. Figure 8 Moreover, due to the presence of the resetting elastic member 4214, when the locking mechanism 42 is in the locked state, the preload force of the compression spring always pushes the locking member 421 to move axially in a direction away from the sliding bracket 41, so that the clamping column 4213 can be better clamped in the limiting groove 4223 without being disengaged, thereby ensuring the stability of the locked state of the locking mechanism 42.

[0059] In one embodiment, a receiving groove 34 connected to the mounting hole 33 is provided on the side of the shielding assembly 3 away from the sliding bracket 41. When the locking mechanism 42 is in the locked state, the knob 4211 is embedded in the receiving groove 34 and does not protrude from the receiving groove 34. This is more aesthetically pleasing and does not occupy additional space in the chassis. Moreover, the built-in knob 4211 is also safer to prevent unlocking by accidental pressing or rotation. Preferably, the knob 4211 is flush with the receiving groove 34.

[0060] Since the built-in knob 4211 is not convenient for pressing and rotating operations, an unlocking portion 42111 is provided at the end of the knob 4211 away from the locking shaft 4212, and the unlocking portion 42111 is configured to engage an unlocking tool, and the unlocking tool is used to apply torque to the locking member 421. Exemplarily, the unlocking portion 42111 is a triangular groove, which is engaged with an unlocking tool with a triangular end, and the unlocking tool performs pressing and rotating operations. In other embodiments, the unlocking portion 42111 may be a pan head of other shapes, not limited to the drawings of this embodiment. When the unlocking portion 42111 adopts a special shape, a specific unlocking tool must be used to unlock, which can improve the safety of the locking mechanism 42.

[0061] In one embodiment, if Fig.10 and Fig.11As shown, the sliding bracket 41 is provided with a guiding inclined surface 414, which is arranged around the first locking hole 422 and the second locking hole 423. The clamping column 4213 rotates to abut against the guiding inclined surface 414, and the guiding inclined surface 414 is inclined from the long-diameter end 4221 to the short-diameter end 4222 in a direction away from the shielding component 3 to guide the clamping column 4213. That is, under the inclined setting of the guiding inclined surface 414, the short-diameter end 4222 is more protruding than the long-diameter end 4221, so that when the locking mechanism 42 in the unlocked state is locked, the guiding inclined surface 414 can guide the clamping column 4213 to slide to the long-diameter end 4221 to quickly align and pass through, without repeatedly turning the knob 4211 to try to find the position of the long-diameter end 4221.

[0062] In order to reduce the friction force of the shielding component 3 moving along the guide rail 411, the sliding bracket 41 also includes a plurality of balls 415. The guide rail 411 is an annular guide rail, and the central axis of the annular guide rail is perpendicular to the moving direction of the shielding component 3. The shielding component 3 is provided with a rolling groove 35, and a plurality of balls 415 are embedded in the guide rail 411. Parts of the balls 415 protrude from the guide rail 411 and are clamped in the rolling groove 35. The balls 415 are rollingly connected to the shielding component 3, so that the shielding component 3 moves back and forth along the guide rail 411.

[0063] It should be noted that rolling grooves 35 are provided on both sides of the shielding plate 31 and the locking plate 32, so that the rolling friction of the shielding plate 31 and the locking plate 32 is relatively consistent, thereby ensuring the smoothness of the movement.

[0064] In another embodiment, a sliding groove structure may also be used, where one of the shielding component 3 and the guide rail 411 is provided with a sliding groove, and the other is provided with a slider, which is slidably embedded in the sliding groove, so that the shielding component 3 is constrained to slide in the guide rail 411.

[0065] In another embodiment, a pulley structure may also be used, the shielding component 3 is provided with a pulley, the guide rail 411 is provided with a slideway, and the pulley is slidably connected to the slideway, so that the shielding component 3 is constrained to slide in the guide rail 411.

[0066] Furthermore, the first mounting plate 412 includes a main body plate 4121, an upper cover plate 4122 and a lower cover plate 4123 that are detachably connected. By removing the upper cover plate 4122 and the lower cover plate 4123, it is convenient to embed the ball 415 in the guide rail 411, and to install the shielding plate 31 with the protruding first limiting portion 312 and the locking plate 32 with the protruding second limiting portion 321 in the guide rail 411.

[0067] The embodiment of the present invention secondly provides a measuring device, which includes the above-mentioned chassis and a plug-in component 100 installed in the chassis. The shielding component 3 of the chassis has a first working state of shielding the plug-in component 100 to limit the plug-in component 100 from being separated from the installation cavity 11, and a second working state of avoiding the plug-in component 100. When the shielding component 3 is in the first working state, the plug-in component 100 is shielded by the shielding component 3 and cannot be plugged in or unplugged through the opening of the installation cavity 11, thereby avoiding the safety risks caused by the loss or mis-plugging of the plug-in component 100. When the shielding component 3 is in the second working state, the shielding component 3 and the plug-in component 100 avoid each other, and the plug-in component 100 can be directly plugged in and unplugged, which is convenient to operate. The locking mechanism 42 is used to lock the sliding bracket 41 and the shielding component 3 to limit the movement of the shielding component 3 relative to the sliding bracket 41. The locking mechanism 42 has a locked state and an unlocked state. When the locking mechanism 42 is in the locked state, the shielding component 3 is in the first working state or the second working state, and the shielding component 3 is restricted from moving without shaking. In the first working state, the reliability of shielding the plug-in component 100 can be ensured, thereby improving the safety of use; in the second working state, the shielding component 3 is prevented from being affected by the plug-in and pull-out operations, thereby improving the convenience of operation. When the locking mechanism 42 is in the unlocked state, the shielding component 3 can move along the guide rail 411 to switch between the first working state and the second working state. The working state switching is convenient and fast, thereby improving the safety and convenience of use of the measuring device.

[0068] The measuring device includes but is not limited to a PXIe modular device. For a chassis of the PXIe modular device, the plug-in component 100 is a daughter card that can be inserted and removed through an opening in the chassis 1 .

[0069] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A chassis for installing a pluggable component (100), the chassis comprising a housing (1), the housing (1) having a mounting cavity (11) and an opening communicating with the mounting cavity (11), the pluggable component (100) being insertable and removable in the mounting cavity (11) through the opening, characterized in that: The chassis further comprises a shielding component (3) and a locking component (4), wherein the locking component (4) comprises a sliding bracket (41) and a locking mechanism (42), wherein the sliding bracket (41) is connected to the housing (1), and the shielding component (3) is capable of reciprocating along a guide rail (411) of the sliding bracket (41), wherein the shielding component (3) has a first working state of shielding the plug-in component (100) to restrict the plug-in component (100) from being separated from the installation cavity (11), and a second working state of avoiding the plug-in component (100), wherein the locking mechanism (42) is configured to prevent the plug-in component (100) from being separated from the installation cavity (11). The locking mechanism (42) is used to lock the sliding bracket (41) and the shielding assembly (3) to limit the movement of the shielding assembly (3) relative to the sliding bracket (41); the locking mechanism (42) has a locking state and an unlocking state; when the locking mechanism (42) is in the locking state, the shielding assembly (3) is in the first working state or the second working state; when the locking mechanism (42) is in the unlocking state, the shielding assembly (3) can move along the guide rail (411) to switch between the first working state and the second working state.

2. The chassis according to claim 1, characterized in that: The shielding assembly (3) comprises a rotatably connected shielding plate (31) and a locking plate (32); the sliding bracket (41) further comprises a first mounting plate (412) and a second mounting plate (413) connected to each other; the first mounting plate (412) is arranged at the edge of the box body (1) and is located on one side of the opening; the second mounting plate (413) is closely connected to the outer side wall (12) of the box body (1); when the shielding assembly (3) is in the first working state, the locking mechanism The locking mechanism (42) is configured to lock the locking plate (32) and the first mounting plate (412), and the shielding plate (31) at least blocks a portion of the opening to constrain the plug-in component (100) within the mounting cavity (11); when the shielding assembly (3) is in a second working state, the locking mechanism (42) is configured to lock the locking plate (32) and the second mounting plate (413), and the shielding plate (31) is away from the opening to avoid the plug-in component (100).

3. The chassis according to claim 2, characterized in that: The guide rails (411) are arranged on both sides of the first mounting plate (412) and extend along the height direction of the box body (1); and / or, When the shielding assembly (3) is switched from the second working state to the first working state, the shielding plate (31) slides along the guide rail (411) and drives the locking plate (32) to flip and be slidably connected to the guide rail (411), and the end of the shielding plate (31) facing the locking plate (32) has a stop plane (311), and the stop plane (311) abuts against the locking plate (32) to limit the flipping of the locking plate (32); and / or, A first limiting portion (312) is provided on one end of the shielding plate (31) away from the locking plate (32), and a second limiting portion (321) is provided on one end of the locking plate (32) away from the shielding plate (31). The guide rail (411) has a first end portion (4111) and a second end portion (4112) which are arranged opposite to each other along the length direction. When the shielding assembly (3) is in the first working state, the second limiting portion (321) abuts against the second end portion (4112) to limit the shielding assembly (3) from moving along the length direction of the guide rail (411); when the shielding assembly (3) is in the second working state, the first limiting portion (312) abuts against the first end portion (4111) to limit the shielding assembly (3) from moving along the length direction of the guide rail (411).

4. The chassis according to claim 1, characterized in that: The locking mechanism (42) comprises a locking piece (421) and a first locking hole (422) and a second locking hole (423) provided on the sliding bracket (41); a mounting hole (33) is provided on the shielding component (3); the locking piece (421) is movably inserted into the mounting hole (33); when the locking mechanism (42) is in a locked state, the locking piece (421) is locked to the first locking hole (422) so that the shielding component (3) maintains a first working state, or the locking piece (421) is locked to the second locking hole (423) so that the shielding component (3) maintains a second working state.

5. The chassis according to claim 4, characterized in that: The locking member (421) comprises a knob (4211) and a locking shaft (4212), the end of the locking shaft (4212) is provided with a radially protruding post (4213), the locking shaft (4212) passes through the mounting hole (33) to connect the knob (4211), the first locking hole (422) and the second locking hole (423) both have a long diameter end (4221) and a short diameter end (4222), the post (4213) can pass through the long diameter end (4221) and rotate to be located at the short diameter end (4222), and the short diameter end (4222) can limit the post (4213) from being separated from the sliding bracket (41).

6. The chassis according to claim 5, characterized in that: A limiting groove (4223) connected to the short diameter end (4222) is provided on the side of the sliding bracket (41) facing away from the knob (4211). When the clamping column (4213) is located at the short diameter end (4222), the clamping column (4213) can be clamped in the limiting groove (4223). The limiting groove (4223) is configured to limit the axial rotation of the clamping column (4213) around the locking shaft (4212) to the long diameter end (4221).

7. The chassis according to claim 6, characterized in that: When the locking mechanism (42) is in a locked state, the locking member (421) can move axially toward the sliding bracket (41) to make the clamping column (4213) disengage from the limiting groove (4223), and the locking member (421) further includes a reset elastic member (4214), one end of which is connected to the knob (4211), and the other end of which can abut against the sliding bracket (41), and the reset elastic member (4214) always has a tendency to push against the knob (4211) to make the locking member (421) move in a direction away from the sliding bracket (41).

8. The chassis according to claim 5, characterized in that: A receiving groove (34) communicating with the mounting hole (33) is provided on a side of the shielding component (3) facing away from the sliding bracket (41); the locking mechanism (42) is in a locked state; the knob (4211) is embedded in the receiving groove (34) and does not protrude from the receiving groove (34); and / or, An unlocking portion (42111) is provided at the end of the knob (4211) away from the locking shaft (4212), and the unlocking portion (42111) is configured to engage an unlocking tool, and the unlocking tool is used to apply torque to the locking member (421); and / or, The sliding bracket (41) is provided with a guiding inclined surface (414), and the guiding inclined surface (414) is arranged around the first locking hole (422) and the second locking hole (423). The clamping column (4213) rotates to abut against the guiding inclined surface (414), and the guiding inclined surface (414) is inclined from the long diameter end (4221) to the short diameter end (4222) in a direction away from the shielding component (3) to guide the clamping column (4213).

9. The chassis according to claim 1, characterized in that: The sliding bracket (41) further comprises a plurality of balls (415); the guide rail (411) is an annular guide rail; the central axis of the annular guide rail is perpendicular to the moving direction of the shielding component (3); the shielding component (3) is provided with a rolling groove (35); a plurality of balls (415) are embedded in the guide rail (411); parts of the balls (415) protrude from the guide rail (411) and are clamped in the rolling groove (35); the balls (415) are rollingly connected to the shielding component (3) so that the shielding component (3) reciprocates along the guide rail (411); or, One of the guide rail (411) and the shielding assembly (3) is provided with a sliding groove, and the other is provided with a sliding block, and the sliding block is slidably embedded in the sliding groove; or, The shielding assembly (3) is provided with a pulley, the guide rail (411) is provided with a slideway, and the pulley is slidably connected to the slideway.

10. A measuring device, characterized in that The invention comprises a chassis as claimed in any one of claims 1 to 9, and further comprises a plug-in component (100), wherein the plug-in component (100) is pluggably disposed in an installation cavity (11) of the chassis through an opening of the chassis.

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