Case assembly

Abstract

The utility model relates to the technical field of cases, in particular to a case assembly which comprises a case and a bracket, the bottom of the case is in sliding fit with the bottom of the bracket, one of the bottom of the case and the bottom of the bracket is provided with a taper sleeve extending in the sliding direction, and the other one of the bottom of the case and the bottom of the bracket is provided with a taper pin block in sliding fit with the taper sleeve. After the case is inserted in place in a sliding mode, the case and the bottom of the front end of the bracket are locked and fixed through a locker, and the taper sleeve and the taper pin block are matched in a limiting mode in the left-right direction to prevent the case from moving. The taper sleeve and the taper pin block are matched to limit a narrow case such as a 1 / 4 ATR case or a 2MCU case, and are matched with a locker to fix, so that the case movement phenomenon under the vibration condition is avoided, the abrasion of the case is avoided, the stress of the rear plug connector is avoided, the reliable electrical transmission is ensured, the pushed case is guided and limited, and the reliability of the case is improved. And the accurate plug-in of the rear plug-in connector is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of chassis technology, and specifically to a chassis component. Background Technology

[0002] As aircraft reliability requirements increase, so do the vibration requirements for equipment, both in terms of time and magnitude. Some aircraft equipment is installed in brackets and secured with locking devices. Existing narrow chassis (such as 1 / 4 ATR chassis, 1 MCU chassis, 2 MCU chassis, etc.) are typically secured only by a single front locking device, which is insufficient to effectively lock and confine the chassis within the bracket. Furthermore, some non-standard chassis are installed in standard brackets. These non-standard chassis are narrower, and the guides on the standard brackets are far from the side walls of the chassis. When connectors at the rear of the chassis are inserted into connectors on the standard brackets, the guides cannot provide guidance, resulting in blind insertion, difficulty in alignment, low installation efficiency, and a high risk of connector damage.

[0003] The disadvantages of existing chassis and bracket-based chassis assemblies are summarized as follows;

[0004] ① Under vibration conditions, especially for 1 / 4 ATR chassis or 2MCU chassis, the chassis is usually secured only by a single locking device at the front. When there is no rear-mounted connector or guide pin at the rear of the chassis, a single locking device only secures the chassis at the front, which may not be able to completely lock the chassis in place, resulting in some movement. Over time, this may wear down the chassis, reducing its environmental resistance and even its mechanical properties.

[0005] ② Under vibration conditions, especially for 1 / 4 ATR chassis or 2MCU chassis, they are usually only fixed by a single locking device at the front of the chassis assembly. When there is a rear plug-in connector at the rear of the chassis, the chassis may move, which may cause stress on the connector and affect the electrical transmission performance of the connector.

[0006] ③ For some non-standard chassis, the guide of the bracket is far from the side wall of the chassis, which makes it impossible to achieve the guiding function. The rear plug-in connector can only be inserted blindly, which reduces the insertion efficiency and is easy to damage the connector, resulting in poor maintainability. Utility Model Content

[0007] To address the aforementioned technical problems, the purpose of this utility model is to provide a chassis assembly.

[0008] The objective of this utility model is achieved through the following technical solution. A chassis assembly according to this utility model includes a chassis and a bracket. The bottom of the chassis and the bottom of the bracket are slidably fitted together. One of the bottoms of the chassis and the bracket is provided with a conical sleeve extending in the sliding direction, and the other is provided with a conical pin block that slidably fits with the conical sleeve. After the chassis is slidably inserted into place, the front bottom of the chassis and the bracket are locked and fixed by a locking device. The conical sleeve and the conical pin block are engaged in a left-right upper limit fit to prevent the chassis from moving.

[0009] Furthermore, the conical sleeve has a trapezoidal groove, and the conical pin block is a trapezoidal block that matches the trapezoidal groove.

[0010] Furthermore, the tapered pin block is integrally formed with the bracket or fixed by countersunk screws or countersunk rivets.

[0011] Furthermore, guide plates parallel to the sliding direction are provided on both sides of the bottom of the bracket.

[0012] Furthermore, both sides of the rear end of the bracket are provided with limiting plates that are parallel to the sliding direction and gradually rise in the insertion direction, and the limiting plates are provided with heat dissipation holes.

[0013] Furthermore, the rear end of the bracket is provided with a back plate mounting plate, and the back plate mounting plate is provided with mounting holes.

[0014] Furthermore, the bracket has a hinged pin at the bottom front end, a locking device is slidably mounted on the pin, and a locking hook is provided at the bottom front end of the chassis to cooperate with the locking device for locking and fixing.

[0015] Furthermore, the front end of the chassis is provided with a handle.

[0016] The beneficial effects of this chassis assembly are summarized as follows:

[0017] ① The tapered sleeve 11 in the chassis and the tapered pin block 21 of the bracket form a fit, which plays a limiting role for narrow chassis such as 1 / 4 ATR chassis or 2MCU chassis. It is fixed with a locking device to prevent chassis movement under vibration conditions, thereby avoiding chassis wear and achieving effective chassis locking.

[0018] ② The cone sleeve 11 in the chassis and the cone pin block 21 of the bracket form a fit to limit the chassis, avoid chassis movement under vibration conditions, avoid stress on the rear plug-in connector, and ensure reliable electrical transmission.

[0019] ③ For non-standard chassis, the cone sleeve 11 in the chassis and the cone pin block 21 of the bracket form a fit to guide and limit the pushed chassis, which is conducive to the accurate mating of the rear plug-in connector, facilitates disassembly and assembly, improves the insertion efficiency, avoids connector damage, and has good maintainability.

[0020] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a perspective view of a chassis assembly according to a first embodiment of the present invention;

[0022] Figure 2 for Figure 1 A 3D schematic diagram of the mid-section chassis;

[0023] Figure 3 for Figure 1 A three-dimensional schematic diagram of the central bracket;

[0024] Figure 4 for Figure 1 A cross-sectional view of the chassis assembly in a direction perpendicular to the chassis insertion / removal direction;

[0025] Figure 5 This is a perspective view of a second embodiment of a chassis assembly according to the present invention;

[0026] Figure 6 for Figure 5 A cross-sectional view of the chassis assembly in a direction perpendicular to the chassis insertion / removal direction.

[0027] [Attached image labels]

[0028] 1-Chassis

[0029] 11-Conical sleeve, 12-Locking hook, 13-Handle,

[0030] 2-Bracket,

[0031] 21-Tapered pin block, 22-Base plate, 23-Guide plate, 24-Limiting plate, 25-Back plate mounting plate, 26-Heat dissipation hole, 27-Mounting hole, 28-Locking device, 29-Pin shaft

[0032] 3-Counterhead screws. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The features and performance of a chassis assembly of the present invention will be further described in detail below with reference to embodiments.

[0039] One embodiment of the chassis assembly of this utility model is as follows: Figures 1 to 4 As shown. The chassis assembly includes a chassis 1 and a bracket 2. The chassis 1 is inserted into the bracket 2 through an opening at the front end of the bracket 2. In this embodiment, the insertion and removal direction of the chassis 1 is taken as the front-back direction, and the horizontal direction perpendicular to the front-back direction is taken as the left-right direction.

[0040] The bottom of the chassis 1 is provided with a conical sleeve 11, which is a trapezoidal groove formed in the bottom of the chassis. The conical sleeve 11 extends in the front-rear direction and penetrates to the rear end face of the chassis 11. In this embodiment, the cross-sectional shape of the conical sleeve 11 is an isosceles trapezoid, and the width of the opening of the conical sleeve 11 at the bottom of the chassis 11 is greater than the width of the bottom of the groove of the conical sleeve 11. In this embodiment, the conical sleeve 11 is symmetrical about the center line extending in the front-rear direction at the bottom of the chassis 11.

[0041] The bottom of the bracket 2 is provided with a base plate 22, which is mainly used to support the weight of the chassis 1. A tapered pin block 21 is provided on the upper surface of the base plate 22. The tapered pin block 21 is integrally formed with the base plate 22 and protrudes from the upper surface of the base plate 22. The tapered pin block 21 extends in the front-rear direction of the bracket 1. The cross-sectional shape of the tapered pin block 21 is trapezoidal, forming a trapezoidal block. In this embodiment, the tapered pin block 21 is an isosceles trapezoid. In the protruding direction, the cross-sectional width of the tapered pin block 21 gradually decreases. The tapered pin block 21 is symmetrical about the centerline of the base plate 22 in the front-rear direction.

[0042] Guide plates 23 are provided on both the left and right edges of the base plate 22. The guide plates 23 protrude from the base plate 22 and extend in the front and rear direction of the bracket 2. When a standard chassis 1 is inserted into the bracket 2, the inner side wall of the guide plate 23 guides the insertion of the chassis 1, ensuring that the chassis 1 is inserted into the bracket 2 in the correct direction and guiding the connector at the rear end of the chassis 1 to mate with the connector at the rear end of the bracket 2.

[0043] The tapered sleeve 11 and the tapered pin block 21 are matched to each other, so that the tapered pin block 21 is nested inside the tapered sleeve 11. When the chassis 1 is inserted into the bracket 2, the chassis 1 is placed between the two guide plates 23, and the tapered pin block 21 is nested inside the tapered sleeve 11 at the bottom of the chassis. Then the chassis 1 is pushed into the bracket 2. During the pushing process, the tapered pin block 21 guides the tapered sleeve 11.

[0044] When chassis 1 is a non-standard chassis, after chassis 1 is placed in bracket 2, there is a certain distance between the side walls of the chassis and the guide plate 23, which cannot guide the chassis. Without the conical sleeve 11 and conical pin block 21, blind insertion is possible, reducing insertion efficiency and easily damaging the connector. Through the cooperation of the conical sleeve 11 and the conical pin block 21, chassis 1 and bracket 2 are limited in the left and right directions. In this embodiment, the conical sleeve 11 and the conical pin block 21 are both located in the middle position of the corresponding chassis 1 and bracket 2. It is only necessary to make the relative position of the connector at the rear end of bracket 2 and the conical pin block 21 consistent with the relative position of the connector at the rear end of chassis 1 and the conical sleeve 11. Under the guiding action of the conical pin block 21 on the conical sleeve 11, the connector on chassis 1 and the connector on bracket 2 can be accurately inserted.

[0045] When the chassis assembly is in a vibrating environment, if the rear connector and guide pin of chassis 1 are not engaged with the rear connector and pin hole of bracket 2, and chassis 1 and bracket 2 are only locked together by the locking device at the front of chassis 1 and bracket 2, this single-point fixation can easily cause chassis 1 to move within bracket 2. For example, the rear end of chassis 1 may swing left and right within bracket 2. Under long-term vibration conditions, this may wear down chassis 1, reducing its environmental resistance and even mechanical properties. The cone sleeve 11 and cone pin block 21 are used to limit the movement of chassis 1 in the left and right directions to prevent it from moving. By setting the cone pin block 21 and cone sleeve 11, and cooperating with the locking device, the bottom of chassis 1 is limited in the left and right directions. The locking device also prevents the rear end of chassis 1 from swinging or moving under vibration, avoiding wear on chassis 1 within bracket 2 and extending its service life.

[0046] When the chassis assembly is under vibration, if the rear connector and guide pin of chassis 1 are engaged with the rear connector and pin hole of bracket 2, and chassis 1 and bracket 2 are locked by a locking device, the engagement of the connector and the engagement of the guide pin and pin hole can prevent the rear end of chassis 1 from swinging within bracket 2. However, by only locking the front end of the chassis assembly, the rear connector still has to withstand the force generated by the movement of chassis 1. Over time, this may affect the electrical transmission performance of the connector. By setting a tapered pin block 21 and a tapered sleeve 11, and cooperating with the locking device, the bottom of chassis 1 is limited in the left and right directions. The tapered pin block 21 and the tapered sleeve 11 not only prevent chassis 1 from moving, but also share most of the force of the movement, avoiding affecting the electrical transmission performance of the connector and extending the service life of the connector.

[0047] In this embodiment, the tapered sleeve 11 and the tapered pin block 21 form a tapered surface fit to achieve the guiding and limiting functions. Together with the locking device 28 and the locking hook 12, the chassis 1 is effectively locked.

[0048] In this embodiment, the tapered pin 21 extends a certain distance along the length direction to limit the position of the chassis 1.

[0049] Limiting plates 24 are provided on both sides of the rear end of the base plate 22. These limiting plates 24 extend upwards from the guide plate 23, gradually increasing in height from front to back, forming a triangle. The chassis 1 is relatively tall, and the connectors are distributed along the rear height of the chassis 1. To limit the height of the entire rear end of the chassis 1, limiting plates 24 are provided at the rear end of the bracket to prevent the top of the chassis from swaying left and right under vibration, thus avoiding affecting the electrical transmission performance of the connectors. Furthermore, after the rear end of the chassis 1 is inserted into the rear end of the bracket 2, the limiting plates 24 ensure that the top of the chassis 1 does not sway, allowing the connectors to be accurately inserted. In addition to limiting the rear end of the chassis 1 and ensuring accurate insertion of the connectors at the rear end of the chassis 1 and the bracket 2, the limiting plates 24 also serve as reinforcing plates for the backplate mounting plate 25 at the rear end of the base plate 213 and the bracket 2, providing overall reinforcement to the bracket 2.

[0050] Multiple heat dissipation holes 26 are distributed on the limiting plate 24 to dissipate heat from the rear backplate connector, chassis connector and chassis interior of the chassis 1, while also reducing the weight of the bracket 2.

[0051] The backplate 25 at the rear end of the bracket 2 is provided with mounting holes 27 for mounting the backplate. Connectors and pin holes are distributed on the backplate for mating with the connectors and guide pins at the rear end of the chassis.

[0052] The bottom front face of the chassis 1 is provided with an L-shaped locking hook 12, and the front end of the base plate 22 of the bracket 2 is provided with a locking device 28. The locking device 28 is slidably mounted on a pin 29 hinged to the bottom front face of the base plate 22. After the chassis 1 is inserted into the bracket 2, the pin 29 is rotated, and the locking device 28 engages with the locking hook 12 to lock the chassis 1 onto the bracket 2. Figure 3 As shown, the locking device in this embodiment is a Class A locking device.

[0053] The front face of the chassis 1 is provided with a handle 13 for easy pushing and pulling.

[0054] A second embodiment of the chassis assembly of this utility model, such as... Figures 5 to 6 As shown, the difference from Embodiment 1 is that the tapered pin block 21 is detachably mounted on the bracket 2. In this embodiment, the tapered pin block 21 has a through hole that matches the countersunk screw 3. After the countersunk screw 3 passes through the tapered pin block 21, it is screwed into the threaded hole of the bracket base plate 22, thus fixing the tapered pin block 21 to the bracket 2. In this embodiment, multiple countersunk screws 3 are distributed along the length of the tapered pin block 21. In other embodiments, the countersunk screws 3 can be replaced with countersunk rivets. By detachably mounting the tapered pin block 21, it can be quickly replaced when the tapered pin block 21 is worn, improving the maintainability of the chassis components.

[0055] In other embodiments of the chassis assembly of the utility model, the locking device may be a Class A locking device, or a Class B locking device, or a Class C locking device, etc.

[0056] In another embodiment of the chassis assembly of the utility model, the tapered pin 21 can extend completely from the front end to the rear end of the bracket 2.

[0057] In other embodiments of the chassis assembly of the utility model, the tapered pin block 21 can be a continuous segment or multiple segments in the same extending direction.

[0058] In other embodiments of the chassis assembly of the utility model, the cross-sectional shapes of the tapered pin block 21 and the tapered sleeve 11 can be mutually matching right-angled trapezoids, rectangles or triangles, etc., or the tapered pin block 21 can be an inverted trapezoid and the corresponding tapered sleeve 11 can be a matching shape. In this case, in addition to the left and right direction limit, the chassis can be limited in the up and down direction.

[0059] In other embodiments of the chassis assembly of the utility model, the tapered pin 21 and the tapered sleeve 11 may not be set in the middle position of the corresponding structure. The tapered pin 21 and the tapered sleeve 11 can be offset by a certain distance in the left and right directions. As long as the tapered sleeve 11 is offset to the position that allows the tapered pin 21 to be set at the bottom of the non-standard chassis whose width does not match the width of the bracket.

[0060] In another embodiment of the chassis assembly of the utility model, a removable pad can be provided at the bottom of the chassis 1, and a conical sleeve 11 can be provided on the pad to enable quick replacement and improve the maintainability of the chassis assembly.

[0061] In another embodiment of the chassis assembly of the utility model, for a narrower chassis, tapered pins can be provided on both sides of the bottom of the chassis to fill the gap between the side wall of the chassis 1 and the guide plate 23, thereby limiting the chassis position.

[0062] In another embodiment of the chassis assembly of the utility model, a tapered pin block can be provided at the bottom of the chassis 1, and a tapered sleeve can be provided on the upper surface of the bracket base plate 22.

[0063] The beneficial effects of this chassis assembly are summarized as follows:

[0064] ① The tapered sleeve 11 in the chassis and the tapered pin block 21 of the bracket form a fit, which plays a limiting role for narrow chassis such as 1 / 4 ATR chassis or 2MCU chassis. It is fixed with a locking device to prevent chassis movement under vibration conditions, thereby avoiding chassis wear and achieving effective chassis locking.

[0065] ② The cone sleeve 11 in the chassis and the cone pin block 21 of the bracket form a fit to limit the chassis, avoid chassis movement under vibration conditions, avoid stress on the rear plug-in connector, and ensure reliable electrical transmission.

[0066] ③ For non-standard chassis, the cone sleeve 11 in the chassis and the cone pin block 21 of the bracket form a fit to guide and limit the pushed chassis, which is conducive to the accurate mating of the rear plug-in connector, facilitates disassembly and assembly, improves the insertion efficiency, avoids connector damage, and has good maintainability.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A cabinet assembly comprising a cabinet (1), a bracket (2), the bottom of the cabinet (1) being in sliding engagement with the bottom of the bracket (2), characterised in that: One of the bottom of the case (1) and the bottom of the bracket (2) is provided with a taper sleeve (11) extending in the sliding direction, and the other is provided with a taper pin block (21) slidingly matched with the taper sleeve (11); after the case (1) is slidingly inserted into place, the front end of the case (1) and the bracket (2) are locked and fixed by a locker (28), and the taper sleeve (11) and the taper pin block (21) are limited in cooperation in the left-right direction to prevent the case (1) from jumping.

2. A chassis assembly according to claim 1, wherein: The taper sleeve (11) is a trapezoidal groove, and the taper pin block (21) is a trapezoidal block matched with the trapezoidal groove.

3. A chassis assembly according to claim 1, wherein: The taper pin block (21) is integrally arranged with the bracket (2) or is fixed by a countersunk screw (3) or a countersunk rivet.

4. The chassis assembly of claim 1, wherein: Both sides of the bottom of the bracket (2) are provided with guide plates (23) parallel to the sliding direction.

5. The chassis assembly of claim 1, wherein: Both sides of the rear end of the bracket (2) are provided with limiting plates (24) parallel to the sliding direction and gradually rising in the insertion direction, and the limiting plates (24) are provided with heat dissipation holes (26).

6. The chassis assembly of claim 1, wherein: The rear end of the bracket (2) is provided with a back plate mounting plate (25) provided with mounting holes (27).

7. The chassis assembly of claim 1, wherein: The front end of the bracket (2) is hingedly provided with a pin shaft (29), the pin shaft (29) is slidingly provided with a locker (28), and the front end of the case (1) is provided with a locking hook (12) matched with the locker (28) for locking and fixing.

8. The chassis assembly of claim 1, wherein: The front end of the case (1) is provided with a handle (13).

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