Dustproof structure, network module and distribution frame

Abstract

Dustproof structure for closing / opening a socket (11) on a housing (1), characterized in that the dustproof structure comprises: a joint seat (2) arranged on the housing (1) and located on one side of the bushing (11) in a first direction; a dust cover (3) hinged to the hinge seat (2), the dust cover (3) comprising a cover portion (32) and a pressing portion (33) located on a side of the cover portion (32) far from the hinge seat (2), the dust cover (3) being pivotable into a first position such that the pressing portion (33) is press-fitted with the bushing (11) and the pressing portion (33) and the cover portion (32) together close the bushing (11); wherein the cover portion (32) comprises two first side walls (3211) spaced apart from each other in a second direction, the two first side walls (3211) being at least partially insertable into the socket (11), and a part of each of the first side walls (3211) that is insertable into the socket (11) being provided with a first projection (3211a) at a position close to the pressing portion (33), the first projection (3211a) being press-fitted with the side wall of the socket (11) to hold the dust cover (3) in the first position in which the socket (11) is closed.

Description

TECHNICAL FIELD

[0001] The present utility model relates to the technical field of electrical connectors, in particular to a dustproof structure, a network module and a distribution frame. STATE OF THE ART

[0002] Both a network module and a distribution frame are used to establish an electrical connection between two network cables or between a network cable and an electrical device. To prevent dust from entering the network module and the distribution frame and causing poor connections, a dust cover is additionally provided to form a dust-proof structure. Some existing dust covers usually have an elastic piece pressed tightly against the socket of the housing. However, this design results in a complex structure of the network module, unstable performance, inconvenient installation, and high cost. CONTENT OF THE PRESENT UTILITY MODEL

[0003] To address the above-mentioned deficiencies, the present utility model provides a dustproof structure, a network module, and a distribution frame. The dustproof structure has a simple structure and stable performance, is easy to assemble, is cost-effective, and can simultaneously improve the dustproof effect.

[0004] To achieve the above-mentioned problem, the present utility model uses the following solutions: A dustproof structure for closing / opening a socket on a housing, the dustproof structure comprising: a joint seat disposed on the housing and located on one side of the socket in a first direction; a dust cover hinged to the hinge seat, the dust cover comprising a cover portion and a pressing portion located on a side of the cover portion remote from the hinge seat, the dust cover being pivotable to a first position such that the pressing portion is press-fitted with the bushing and the pressing portion and the cover portion together close the bushing; wherein the cover portion comprises two first side walls spaced apart from each other in a second direction, the two first side walls being at least partially insertable into the socket, and a part of each of the first side walls insertable into the socket being provided with a first projection at a position near the pressing portion, the first projection being press-fitted with the side wall of the socket to hold the dust cover in the first position.

[0005] The advantageous effects of the present utility model are: The dust cover is hinged to the housing and opens and closes the socket by folding it up or down. When the socket needs to be protected from dust, the dust cover is folded back. Dual fastening of the dust cover and socket is achieved by the pressing section and the first protrusion, which improves the stability of the dust cover in the first position. Accidental opening of the dust cover due to unintentional operation is prevented, which significantly improves the dustproof effect of the dust cover.

[0006] The first protrusion is located at a position of the first side wall near the pressing portion. The first protrusion can be separated from the socket immediately after the pressing portion is separated. Now, there is no snap-fit ​​connection structure between the dust cover and the socket, allowing the socket to be easily opened for plug insertion.

[0007] It is further provided that the part of each of the first side walls which can be inserted into the bushing is provided with a second projection at a position close to the joint seat.

[0008] The second protrusion may abut against an end surface of the housing to leave a gap between the pressing portion and the socket in a third direction, which prevents the dust cover from further pivoting so that the pressing portion and the socket do not abut each other. At this time, as long as a plug is manually held and lifted to raise the dust cover, the dust cover can be flipped open. This allows one-handed insertion of the plug into the socket, which facilitates operation. In addition, under the action of an external force, the second protrusion can enter the socket and be press-fitted with the side wall of the socket. This further increases the stability of the dust cover in the first position and improves the dustproof effect.

[0009] Furthermore, it is provided that the second protrusions are arranged symmetrically on the two first side walls, and a vertical distance between ends of the two second protrusions that are far apart from each other in the second direction is greater than a distance between the corresponding positions of the bushing in the second direction. It must be ensured that the second protrusion can enter the bushing through its own deformation while implementing a position limitation.

[0010] Furthermore, the pressing section comprises a clamping element and a pressing element, wherein the clamping element extends along an upper end surface of the cover section far from the joint seat toward a side far from the joint seat, and the pressing element extends along an outer side surface of the clamping element toward an outer side. The pressing element protrudes from the clamping element, thus providing a pressable area for the fingers.

[0011] It is further provided that the outer side surface of the clamping element comprises an inclined portion, wherein the inclined portion is arranged on a side of the pressing element far from the cover portion and is docked to the pressing element, wherein an obtuse angle is formed between the inclined portion and the pressing element.

[0012] The arrangement of the inclined section creates space for inserting the fingers, so that a larger space is created between the housing and the pressing element into which the fingers can enter, which facilitates one-handed operation and enables the application of the dust-proof structure in a narrow space.

[0013] Furthermore, a portion of an outer side surface of the cover section, located near the hinge seat, is recessed inwardly to form a stepped structure. The recessed portion creates space for a distribution frame on which the housing is installed. This ensures that the dust cover does not interfere with the distribution frame when pivoting it into the second position to open the socket.

[0014] It is further provided that the cover portion comprises an insert and a cover element, wherein the insert is insertable into the socket, wherein the cover element is arranged outside the insert and can cover the outside of the socket, wherein the cover portion and the pressing portion together form a contoured piece having the same shape as the socket. The cover portion is formed as a double-layer structure in the thickness direction, which closes the socket with the insert and covers the socket with the cover element, thereby achieving double dust protection for the socket and improving the dustproof effect.

[0015] It is further provided that the dust cover further comprises a hinge portion arranged on a side of the cover portion close to the hinge seat, wherein the hinge portion is hinged to the hinge seat; wherein the joint seat comprises a slot communicating with the bushing and extending in the first direction, wherein a limiting groove is provided on the housing and communicates with the slot and extends in the second direction; wherein the hinge portion comprises an elastic arm extending along a lower end surface of the cover portion near the hinge seat toward a side far from the pressing portion, wherein a hinge rod is provided on a side of the elastic arm far from the cover portion, the hinge rod being insertable into and restricted in the restriction groove, the hinge rod and the restriction groove being rotatably connected to each other.

[0016] The structure of the joint section and the joint seat facilitates the assembly of the two, improves the assembly efficiency and reduces the difficulty of assembly.

[0017] The present utility model further discloses a network module comprising a housing, wherein a socket is provided inwardly on at least one of two end surfaces of the housing extending along a third direction, the socket having the above-described dustproof structure arranged on it.

[0018] The present utility model also discloses a distribution frame comprising a housing, wherein a plurality of bushings are provided inwardly on an end surface of the housing extending along the third direction, each of the bushings having the above-described dustproof structure arranged thereon. SHORT DESCRIPTION OF THE DRAWING Fig. 1 is a schematic perspective structural view of a dustproof structure in an embodiment of the present utility model; Fig. 2 shows a schematic perspective structural view of a dust cover in an embodiment of the present utility model; Fig. 3 shows a schematic perspective structural view of the dust cover in an embodiment of the present utility model from a further angle; Fig. 4 shows a rear view of the dust cover in an embodiment of the present utility model; Fig. 5 is a schematic perspective structural view of a dust cover in another embodiment of the present utility model; Fig. 6 shows a side view of the dust cover in another embodiment of the present utility model; Fig. 7 shows a schematic structural view of a bushing and a joint seat in an embodiment of the present utility model; Fig. 8 shows a front view of the socket in an embodiment of the present utility model; Fig. 9 shows a schematic view of the dust cover in a second position in an embodiment of the present utility model; Fig. 10 shows a schematic perspective structural view of a network module in an embodiment of the present utility model; Fig. 11 shows a schematic perspective structural view of a network module in another embodiment of the present utility model; Fig. 12 shows a schematic perspective structural view of a distribution frame in an embodiment of the present utility model; Fig. 13 shows a schematic perspective structural view of a distribution frame in another embodiment of the present utility model. List of reference symbols: 1. Housing; 11. socket; 111. circular structure; 2. Articulated seat; 21. Slot; 211. Second bevel; 22. Limiting groove; 3. Dust cover; 31. Joint section; 311. Elastic arm; 312. Joint rod; 3121. First inclined surface; 32. Cover portion; 321. Insert; 3211. First side wall; 3211a. First projection; 3211b. Second projection; 322. Cover element; 32a. Outer side surface of the cover portion; 33. Pressing section; 331. Clamping element; 3311. Inclined section; 3312. Inclined surface; 332. Pressing element. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings to facilitate the understanding of the advantages and features of the present utility model by those skilled in the art. This will more clearly define the scope of protection of the present utility model.

[0020] In each of the figures, the left-right direction and the front-back direction represent two horizontal directions that are orthogonal to each other, while the up-down direction represents the vertical direction. The first direction is the up-down direction, the second direction is the left-right direction, and the third direction is the front-back direction.

[0021] The present utility model discloses a dustproof structure used to protect a network module from dust and other contaminants when the network module is not mated with a connector (not shown in the figures).

[0022] The network module comprises a housing 1 provided with a socket 11. The socket 11 is opened from one end face of the housing 1 in the front-to-back direction, and a plug is insertable into the socket 11. Referring to Fig. 1, a dustproof structure includes a hinged seat 2 located on one side of the socket 11 in the up-down direction, and a dust cover 3 hinged to the hinged seat 2. The hinged seat 2 is arranged on the housing 1. The dust cover 3 can be folded up and down along the hinged seat 2 to switch between a first position and a second position. When the dust cover 3 is folded to the first position, it can be attached to the housing 1 and close the socket 11. At this time, the dust cover 3 performs a dustproof function. Referring to Fig. 9, the socket 11 is in an open state when the dust cover 3 is folded into the second position; now, a plug can be inserted into the socket 11. By way of example, the dust cover 3 is configured to be folded open to reach the first position, at which time the hinge seat 2 is located below the socket 11.

[0023] With reference to Fig. 3, the dust cover 3 is hinged to the hinge seat 2, the dust cover 3 comprising a pressing portion 33 and a cover portion 32 which are arranged sequentially from a side far from the hinge seat 2 to a side close to the hinge seat 2. In the first position, the pressing portion 33 is press-fitted with the bushing 11 and closes the bushing 11 together with the cover portion 32. The cover portion 32 includes two first side walls 3211 spaced apart from each other in the left-right direction, the two first side walls 3211 being at least partially insertable into the bushing 11, and a part of the first side walls 3211 that is insertable into the bushing 11 is provided with a first projection 3211a at a position near the pressing portion 33, the first projection 3211a being press-fitted with the side wall of the bushing 11 to hold the dust cover 3 in the first position.

[0024] In the present embodiment, the dust cover 3 is hinged to the housing 1 and opens or closes the socket 11 by folding it up or down. When the socket 11 needs to be protected from dust, the dust cover 3 is folded, whereby fastening of the dust cover 3 and the socket 11 is achieved by means of the pressing section 33 and the first projection 3211a. At this time, the pressing section 33 abuts against the upper end surface of the socket 11, with the first projection 3211a abutting against the side wall of the socket 11. The dust cover 3 and the socket 11 are doubly fastened by the pressing section 33 and the first projection 3211a, thereby improving the stability of the dust cover 3 in the first position. Now, when the dust cover 3 closes the socket 11, the dust cover 3 cannot easily be pulled off due to unintentional operation (e.g.: no force is applied to the pressing portion 33, but a slight external force is applied to the dust cover 3 by shaking the housing 1) from the socket 11 and thereby accidentally open, thereby greatly improving the dustproof effect of the dust cover 3.

[0025] Furthermore, when opening the dust cover 3 in the first position, an external force must be applied to the pressing portion 33 to overcome an action force generated by the press fit between the first protrusion 3211a or the pressing portion 33 and the bushing 11. During this process, the pressing portion 33 is first separated from the bushing 11. Immediately after the pressing portion 33 is separated from the bushing 11, the first protrusion 3211a can be separated from the bushing 11 because the first protrusion 3211a is located at a position of the first side wall 3211 close to the pressing portion 33. And at this time, there is no snap-fit ​​structure between the dust cover 3 and the bushing 11.If the dust protection mechanism is designed such that the dust cover 3 is folded down to open the socket 11, no further force is required, and the dust cover 3 pivots into the second position under the influence of gravity. If the dust protection mechanism is designed such that the dust cover 3 is folded up to open the socket 11, no further force is required, and when the plug is subsequently inserted into the socket 11, the plug can directly fold up the dust cover 3.

[0026] The dust cover 3 further comprises a hinge portion 31, wherein the hinge portion 31 is arranged on a side of the cover portion 32 close to the hinge seat 2, wherein the hinge portion 31 is hinged to the hinge seat 2 to enable the dust cover 3 to be pivoted up and down relative to the hinge seat 2.

[0027] To increase the convenience of operation, in one embodiment, the pressing portion 33 is configured so that the dust cover 3 can be folded by operating the pressing portion 33 with a single finger. Referring to Fig. 5, the pressing portion 33 includes a clamping member 331 and a pressing member 332, wherein the clamping member 331 extends along an upper end surface of the cover portion 32 far from the hinge seat 2 toward a side far from the hinge seat 2, and the pressing member 332 extends along an outer side surface of the clamping member 331 toward an outer side. Here, the outer side surface refers to a surface facing outward when the dust cover 3 is in the first position; and the outer side refers to an outer side of the housing 1.

[0028] Now the pressing element 332 and the clamping element 331 are perpendicular to each other, with the pressing element 332 protruding from the clamping element 331 to facilitate pressing with the finger.

[0029] In one embodiment, as shown in Fig. 6, the outer side surface of the clamping member 331 includes an inclined portion 3311, the inclined portion 3311 being disposed on a side of the pressing member 332 far from the cover portion 32, the inclined portion 3311 being inclined from a side far from the cover portion 32 to a side close to the cover portion 32 toward the pressing member 332. The outer side surface of the clamping member 331 includes a vertical portion. The vertical portion and the inclined portion 3311 form an obtuse angle. The pressing portion 33 is disposed on the vertical portion. At this time, one end of the inclined portion 3311 is docked to the pressing member 332, forming an obtuse angle between the inclined portion 3311 and the pressing member 332.

[0030] The provision of the inclined portion 3311 provides space for finger insertion. Compared with the provision of only a single vertical portion, a larger space is formed between the housing 1 and the pressing member 332 for finger insertion, facilitating one-handed operation. Even if the dustproof structure is provided in a narrow space, no additional space is required for finger operation. By providing the inclined portion 3311 on the dustproof structure, the finger operation requirements can be met.

[0031] With reference to Fig. 6, the upper end surface of the clamping member 331 is a surface of the clamping member 331 far from the cover portion 32, and the upper end surface of the clamping member 331 is also an obliquely arranged inclined surface 3312, wherein an inclination direction of the inclined surface 3312 is opposite to an inclination direction of the inclined portion 3311, so that the clamping member 331 can enter the socket 11 and abut against the upper end surface of the socket 11. Since the clamping member 331 is pivoted into the socket 11, a low end of the upper end surface of the inclined clamping member 331 is convenient for insertion into the socket 11, while a high end abuts against the upper end surface of the socket 11.

[0032] When the dust cover 3 is configured to be unfolded to reach the second position, the finger presses the pressing portion 33 to separate the first protrusion 3211a from the socket 11. At this time, the dust cover 3 still has a downward folding force due to its own gravity. Even without external force, the pressing portion 33 and the first protrusion do not engage with the socket 11. However, when assembling the plug, one hand is still required to further unfold the dust cover 3, while the other hand is needed to hold the plug and insert it into the socket 11; at this time, both hands are required for operation, which makes plug insertion inconvenient.

[0033] To solve this problem, in one embodiment, the part of the first side wall 3211 that can be inserted into the bushing 11 is provided with a second projection 3211b at a position near the joint seat 2. The second projection 3211b can abut against an end surface of the housing 1 to leave a gap between the pressing portion 33 and the bushing 11 in the front-rear direction, at which time the dust cover 3 can be restricted by the second projection 3211b in the third position. However, when an external force is applied, the second projection 3211b can enter the bushing 11 under the action of the external force and be press-fitted with the side wall of the bushing 11 to hold the dust cover 3 in the first position.

[0034] This gap doesn't need to be too large and is generally between 2 mm and 3 mm. It's convenient to open the dust cover 3 through the connector, allowing one-handed insertion of the connector.

[0035] In the present embodiment, a second protrusion 3211b is added, and the second protrusion 3211b is disposed at a position of the first side wall 3211 near the hinge portion 31. Now, when the dust cover 3 is folded, the second protrusion 3211b initially abuts against the end surface of the housing 1. In this way, the dust cover 3 can be prevented from further pivoting without an external force, so that the pressing portion 33 and the socket 11 do not abut each other, with a gap existing between the pressing portion 33 and the socket 11 in the front-rear direction. At this time, the dust cover 3 can be folded open as long as a plug is manually held and lifted to raise the dust cover 3. This allows one-handed insertion of the plug into the socket 11, thus facilitating operation.At the same time, when the dust cover 3 is in the first position, the second projection 3211b may also be press-fitted with the socket 11 to limit the dust cover 3 in the first position and thereby improve the stability of the dust cover 3 when closing the socket 11.

[0036] With reference to Fig. 4 and Fig. 8, a vertical distance h1 between the far ends of the two second protrusions 3211b on the two first side walls 3211 in the left-right direction is slightly larger than a distance h2 between the corresponding positions of the bushing 11 in the left-right direction. In this way, in the case where the second protrusion 3211b abuts against the end surface of the housing 1, the second protrusion 3211b cannot directly enter the bushing 11 without an external force, but can abut against the end surface of the housing 1 to realize a restricting function. At the same time, due to the elasticity of the second protrusion 3211b, the second protrusion 3211b can be pressed and deformed under external force to enter the bushing 11 and abut against the side wall of the bushing 11 to form an interference fit. In this way, the stability of the dust cover 3 in the first position is further increased.The expression “slightly larger” means that the difference between h1 and h2 does not exceed 1.5 mm.

[0037] A second protrusion 3211b and a first protrusion 3211a are provided on each of the two first side walls 3211. That is, the first protrusions 3211a and the second protrusions 3211b are provided in pairs, the two second protrusions 3211b being arranged symmetrically, and the two first protrusions 3211a being arranged symmetrically. The first protrusion 3211a and the second protrusion 3211b are arranged on the same plane. That is, in the first position, the first protrusion 3211a and the second protrusion 3211b are not offset in the front-rear direction, and the first protrusion 3211a and the second protrusion are not offset in the thickness direction of the cover portion. In this way, the first protrusion 3211a and the housing 1 are not yet in contact when the second protrusion 3211b abuts against the housing 1.

[0038] In one embodiment, the first protrusion 3211a and the second protrusion 3211b may also be offset in the thickness direction, but the offset distance therebetween must be ensured so that when the second protrusion 3211b abuts against the housing 1, a gap still remains between the first protrusion 3211a and the bushing 11 in the front-rear direction.

[0039] A plurality of second projections 3211b and a plurality of first projections 3211a may also be arranged on the first side wall 3211.

[0040] In one embodiment, the two side walls of the socket 11 assume a circular arc-shaped structure 111 near its opening, the circular arc-shaped structure 111 guiding the dust cover 3 to facilitate the entry of the first projection 3211a and the second projection 3211b on the dust cover 3 into the socket 11.

[0041] In one embodiment, the cover portion 32 and the pressing portion 33 together form a contoured piece having the same shape as the socket 11. This improves the dustproof effect when closing the socket 11.

[0042] In one embodiment, the cover portion 32 comprises an insert 321 arranged in the thickness direction and a cover element 322, wherein the insert 321 is insertable into the socket 11, wherein the cover element 322 is arranged outside the insert 321 and can cover the outside of the socket 11. The cover portion 32 is now formed as a double-layer structure in the thickness direction, which closes the socket 11 with the insert 321 and covers the socket 11 with the cover element 322, thereby achieving double dust protection for the socket 11 and improving the dustproof effect.

[0043] Both the first protrusion 3211a and the second protrusion 3211b are arranged on the insert 321. The first protrusion 3211a and the second protrusion 3211b can be inserted into the socket 11 and abut against the side wall of the socket 11 to achieve interference fixation.

[0044] The area of ​​the cover member 322 is larger than the area of ​​the insert 321. The side wall of the bushing 11 has a stepped portion in the form of a step structure. The cover member 322 and the insert 321 each have a step structure at a position corresponding to the stepped portion, which is identical to the structure of the stepped portion. Such a contoured structure of the cover portion 32 has a good sealing effect on the bushing 11 and significantly improves the dustproof effect.

[0045] In one embodiment, as shown in Fig. 3, the outer side surface 32a of the cover portion comprises a flat segment and an arc segment, the arc segment being located near the hinge portion 31, and the arc segment providing a smooth transition from the flat segment to the hinge portion 31.

[0046] In one embodiment, as shown in Fig. 5, a portion of the outer side surface 32a of the cover portion near the hinge portion 31 is recessed inward to form a stepped structure. There is no longer a smooth transition between the cover portion 32 and the hinge portion 31; instead, the outer side surface 32a of the cover portion is formed as a stepped structure. When a network module is attached to the distribution frame, the outer side surface 32a of the cover portion with such a structure creates space for the distribution frame on which the housing 1 has been installed due to the inwardly recessed portion. This ensures that the dust cover 3 does not interfere with the distribution frame when it pivots to the second position. The dust cover 3 in the second position forms an angle of no less than 90° with the opening of the socket 11, which facilitates plug insertion.

[0047] With reference to Fig. 7, the joint seat 2 comprises a slot 21 communicating with the bushing 11 and arranged vertically, and a limiting groove 22 communicating with the slot 21 is provided on the housing 1, the slot 21 being arranged along the left-right direction. With reference to Fig. 2, the hinge portion 31 includes an elastic arm 311 extending along a lower end surface of the cover portion 32 toward a side far from the pressing portion 33. A hinge rod 312 is provided on a side of the elastic arm 311 far from the cover portion 32. The hinge rod 312 can be inserted into the restriction groove 22 and restricted therein. Now, the dust cover 3 and the housing 1 are hingedly connected and can rotate about the hinge rod 312.

[0048] The slots 21 are arranged at intervals along the left-right direction, and two slots 21 are not connected to each other. The elastic arm 311 is arranged corresponding to the slot 21. The slot 21 can deform the elastic arm 311 by being pressed by the link rod 312, so that the two elastic arms 311 approach each other. When the link rod 312 is aligned with the limiting groove, the elastic arm 311 is restored by its own elasticity, and the link rod 312 is inserted into the limiting groove. Due to such a structure, the link portion 31 is easy to process and convenient to assemble.

[0049] In one embodiment, the joint rod 312 extends perpendicular to the elastic arm 311, wherein the joint rod 312 comprises a first inclined surface 3121, wherein the side wall of the slot 21 has a second inclined surface 211 at its opening, which interacts with the first inclined surface 3121. When the joint section 31 is inserted into the joint seat 2, the two inclined surfaces interact. The width of the slot 21 does not need to be too large, as it can also meet the deformation requirements of the elastic arm 311.

[0050] The dust cover 3 is assembled with the hinge seat 2 in the second position. At this time, the first inclined surface 3121 and the second inclined surface 211 abut each other, pushing the dust cover 3 in the front-to-back direction. The elastic arm 311 is deformed at a position near the restricting groove and recovers by its own elasticity after the hinge rod 312 and the slot 21 are aligned, so that the hinge rod 312 is inserted into the slot 21 to establish the connection between the hinge portion 31 and the hinge seat 2.

[0051] The slot 21 is a U-shaped structure. The upper end of the slot 21 is directly connected to the socket 11, and the bottom wall of the slot 21 plays a limiting role. When the elastic arm 311 abuts against the bottom wall of the slot 21, the dust cover 3 cannot be pivoted any further, and the dust cover 3 is in the second position. At this time, the opening of the socket 11 is in an open state, which facilitates the insertion of a plug into the socket 11.

[0052] In one embodiment, the dust cover 3 is a one-piece injection-molded part. The dust cover 3 is easy to process by injection molding and forms an integral structure with high stability. The dust cover 3 can utilize the elasticity of the plastic to achieve a press fit and separation between the dust cover 3 and the opening, facilitating assembly with the joint seat 2.

[0053] In the dustproof structure of the present embodiment, the structure of the pressing portion 33 allows convenient force to be applied with a single finger, thereby facilitating the folding of the dust cover 3. By cooperating with the first protrusion 3211a, the fastening effect of the dust cover 3 and the socket 11 is enhanced to improve the dustproof effect. The added second protrusion 3211b, on the one hand, enhances the fastening effect of the dust cover 3 and the socket 11 when the dust cover is in the first position; on the other hand, the second protrusion 3211b can limit the pivoting distance of the dust cover 3 without external force and leaves a gap between the pressing portion 33 and the socket 11, facilitating one-handed plugging of the connector.

[0054] In one embodiment, as shown in Fig. 10, a network module according to this embodiment includes a casing 1, wherein a bushing 11 is provided inwardly on both end surfaces of the casing 1 extending along the front-rear direction, and below the bushing 11, the above-described hinge seat 2 and the above-described dust cover 3 hinged to the hinge seat 2 are arranged, the dust cover 3 and the hinge seat 2 constituting the above-described dustproof structure.

[0055] In use, the network module can be configured to open the dust cover 3 to place the dust cover 3 in the first position, or to fold the dust cover 3 down to place the dust cover 3 in the first position.

[0056] In one embodiment, as shown in Fig. 11, a network module according to this embodiment includes a casing 1, wherein a socket 11 is provided inwardly on an end surface of the casing 1 extending along the front-rear direction, and the casing 1 is provided with the above-described dustproof structure.

[0057] A wire outlet is arranged on the other end surface of the housing 1. In one embodiment, a wire binding device is attached to the wire outlet. In one embodiment, a tubular element for guiding the wire is provided at the wire outlet, the angle of the tubular element being adjustable.

[0058] In one embodiment, as shown in Fig. 12 and Fig.13, a distribution frame according to this embodiment includes a housing 1, wherein a bushing 11 is provided inwardly on an end surface of the housing 1 extending along the front-rear direction, and a dustproof structure corresponding to the bushing 11 is arranged on the housing 1 to protect the corresponding bushing 11 from dust.

[0059] A plurality of sockets 11 are provided, evenly distributed along the left-right direction. At the same time, multiple rows of sockets 11 may also be provided in the top-bottom direction.

[0060] The above embodiments are only intended to illustrate the technical concept and features of the present utility model, and are intended to enable a person skilled in the art to understand and implement the contents of the present utility model, but cannot limit the scope of protection of the present utility model. Any equivalent changes or modifications made in accordance with the spirit of the present utility model should be covered by the scope of protection of the present utility model.

Claims

[1] Dustproof structure for closing / opening a socket (11) on a housing (1), characterized by that the dustproof structure includes: a joint seat (2) arranged on the housing (1) and located on one side of the bushing (11) in a first direction; a dust cover (3) hinged to the hinge seat (2), the dust cover (3) comprising a cover portion (32) and a pressing portion (33) located on a side of the cover portion (32) far from the hinge seat (2), the dust cover (3) being pivotable into a first position such that the pressing portion (33) is press-fitted with the bushing (11) and the pressing portion (33) and the cover portion (32) together close the bushing (11); wherein the cover portion (32) comprises two first side walls (3211) spaced apart from each other in a second direction, the two first side walls (3211) being at least partially insertable into the socket (11), and a part of each of the first side walls (3211) that is insertable into the socket (11) being provided with a first projection (3211a) at a position close to the pressing portion (33), the first projection (3211a) being press-fitted with the side wall of the socket (11) to hold the dust cover (3) in the first position in which the socket (11) is closed. [2] Dustproof structure according to claim 1, characterized bythat the part of each of the first side walls (3211) which can be inserted into the bushing (11) is provided with a second projection (3211b) at a position close to the joint seat (2), wherein the second projection (3211b) can abut against an end surface of the housing (1) to leave a gap between the pressing section (33) and the bushing (11) in a third direction, and wherein the second projection (3211b) can enter the bushing (11) under the action of an external force and be press-fitted with the side wall of the bushing (11). [3] Dustproof structure according to claim 2, characterized by that the second projections (3211b) are arranged symmetrically on the two first side walls (3211), and a vertical distance between ends of the two second projections (3211b) which are far apart from each other in the second direction is greater than a distance between the corresponding positions of the bushing (11) in the second direction. [4] Dustproof structure according to claim 1, characterized by in that the pressing section (33) comprises a clamping element (331) and a pressing element (332), wherein the clamping element (331) extends along an upper end surface of the cover section (32) far from the joint seat (2) towards a side far from the joint seat (2), wherein the pressing element (332) extends along an outer side surface of the clamping element (331) towards an outer side. [5] Dustproof structure according to claim 4, characterized by in that the outer side surface of the clamping element (331) comprises an inclined portion (3311), wherein the inclined portion (3311) is arranged on a side of the pressing element (332) far from the cover portion (32) and is docked to the pressing element (332), wherein an obtuse angle is formed between the inclined portion (3311) and the pressing element (332). [6] Dustproof structure according to claim 1, characterized bythat a part of an outer side surface (32a) of the cover portion located near the joint seat (2) is recessed inwardly to form a step structure. [7] Dustproof structure according to claim 1, characterized by in that the cover section (32) comprises an insert (321) and a cover element (322), wherein the insert (321) can be inserted into the socket (11), wherein the cover element (322) is arranged outside the insert (321) and can cover the outside of the socket (11), wherein the cover section (32) and the pressing section (33) together form a contoured piece which has the same shape as the socket (11). [8] Dustproof structure according to one of claims 1 to 7, characterized by that the dust cover (3) further comprises a hinge portion (31) arranged on a side of the cover portion (32) close to the hinge seat (2), the hinge portion (31) being hinged to the hinge seat (2); wherein the joint seat (2) comprises a slot (21) communicating with the bushing (11) and extending in the first direction, wherein a limiting groove (22) is provided on the housing (1) which communicates with the slot (21) and extends in the second direction; wherein the hinge portion (31) comprises an elastic arm (311) extending along a lower end surface of the cover portion (32) located near the hinge seat (2) in the direction of a side far from the pressing portion (33), wherein a hinge rod (312) is provided on a side of the elastic arm (311) far from the cover portion (32), wherein the hinge rod (312) can be inserted into the limiting groove (22) and limited therein, wherein the hinge rod (312) and the limiting groove (22) are rotatably connected to each other. [9] Network module, characterized byin that it comprises a housing (1), wherein a bushing (11) is provided inwardly on at least one of two end faces of the housing (1) which extend along a third direction, wherein a dust-proof structure according to one of claims 1 to 8 is arranged on the bushing (11). [10] Distribution frame, characterized by in that it comprises a housing (1), wherein on an end face of the housing (1) extending along a third direction, a plurality of bushings (11) are provided inwardly, wherein a dustproof structure according to one of claims 1 to 8 is arranged on each of the bushings (11).

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