Connector and connector assembly
By preinstalling anti-loosening screws on the connector and adjusting the axial floating amount by adjusting its small diameter segment length, the problem of low axial floating amount of screws in the prior art causes the top of the load backplate to fall off, and further achievement Large axial float and smaller product size and cost.
Patent Information
- Application Number
- CN202421042864.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-10
- Filing Date
- 2024-05-14
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-14
AI Technical Summary
In the prior art, when preinstalling screws onto connectors, additional anti-falling parts need to be added, resulting in a small axial floating amount of the screws, which can easily lead to the problem of falling off the top of the load backplate.
The connector is pre-installed with anti-loosening screws. The large-diameter section of the anti-loosening screws is provided with an external thread section. The screw mounting holes on the connector housing and/or the mounting body are provided with the large-diameter section. The internal thread segment that is matched with the external thread segment adjusts the axial floating amount by adjusting the small diameter segment length of the anti-loosening screw.
The screw has a large axial floating amount, avoiding the load backplate top falling off, while avoiding the need for additional anti-falling parts, reducing product size and cost.
Smart Images
Figure CN222479186U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of signal transmission equipment, in particular to a connector and a connector assembly. Background Art
[0002] Fastening screws are widely used in various connector fields, mainly to fasten and constrain the connector position and ensure reliable contact of the connector. Fastening screws are delivered to users in two main states relative to connectors. One is that the screws are delivered separately as loose parts, and the other is that the screws are pre-installed on the connector and delivered together with the product. When the screws are delivered separately as loose parts, the screws need to be packaged separately. When users use them, they need to take out the screws first, and then find the corresponding installation position on the connector for assembly. This method increases the installation process of the screws. It is easy to install the screws in the wrong position during installation, and the screws are easy to fall or lose during disassembly.
[0003] When screws are pre-installed on connectors and delivered with the product, additional anti-falling parts are often required to prevent the screws from falling off, such as Figure 1 As shown in the figure, the connector housing 1 and the mounting body 2 are respectively provided with screw mounting holes 5, the screw 3 is inserted into the screw mounting hole 5, the end of the screw 3 away from the screw head has an external thread section, the waist of the screw 3 is a smooth rod section, and the smooth rod section of the screw 3 is fitted with a snap ring 4 by interference fit, the aperture of the screw mounting hole 5 on the mounting body 2 is larger than the maximum radial dimension of the snap ring 4 so that the snap ring 4 can axially move in the screw mounting hole on the mounting body 2, thereby making the screw 3 have a certain axial floating amount, and the snap ring 4 can form a stop fit with the hole edge of the screw mounting hole 5 on the connector housing 1 after moving a certain distance to prevent the screw 3 from coming out. Since the snap ring 4 can only axially move in the screw mounting hole 5 on the mounting body 2, and the range of movement is very small, the axial floating amount that the screw 3 can generate is also very small. The load back plate 7 is provided with a threaded hole for screwing the external thread section of the screw 3, and the PCB board 6 is provided with a through hole for inserting the screw 3. When installing the product on the PCB board 6, four screws need to be screwed into the four threaded holes on the load back plate 7 respectively. When one of the screws is screwed, due to the small axial floating amount of the screw, the other screws may push the load back plate 7 on the back of the PCB board 6 off. In addition, since the clamping ring is sleeved on the screw and the clamping ring moves axially in the screw mounting hole on the mounting body, under the premise of ensuring the minimum specification of the screw, in order to meet the assembly requirements, the size of the mounting body needs to be increased, and the size of the connector housing also needs to be increased accordingly, which leads to an increase in the overall size of the connector product, which is not conducive to miniaturization design. In addition, this method adds an additional process of interference fit clamping ring, which also leads to an increase in connector cost. Utility Model Content
[0004] The purpose of the utility model is to provide a connector to solve the problem that in the prior art, the screws are pre-installed on the connector and delivered together with the product, and additional anti-falling parts need to be added, resulting in a small axial floating amount of the screws, which makes it easy for the top of the load backplate to fall off; the purpose of the utility model is to provide a connector assembly to solve the problem that the existing connector assembly has a small axial floating amount of the screws, which makes it easy for the top of the load backplate to fall off when installed on the PCB board.
[0005] In order to achieve the above purpose, the connector of the utility model adopts the following technical solutions:
[0006] A connector, comprising a connector housing and a transmission component installed in the connector housing, the transmission component comprising a mounting body and a transmission module installed in the mounting body, the connector housing and the mounting body are correspondingly provided with screw mounting holes for mounting screws, the connector also comprises an anti-loosening screw, the anti-loosening screw is movably installed in the screw mounting hole, the rod portion of the anti-loosening screw comprises a large diameter section and a small diameter section, the small diameter section is connected between the screw head and the large diameter section, the diameter of the screw head is larger than the diameter of the large diameter section, the large diameter section is provided with an external thread section, and the screw mounting holes on the connector housing and / or the mounting body are provided with an internal thread section that cooperates with the external thread section on the large diameter section.
[0007] Preferably, the internal thread section is arranged in the screw mounting hole on the connector housing, and the hole diameter of the screw mounting hole on the mounting body is larger than the maximum diameter of the rod of the anti-loosening screw so that the anti-loosening screw can smoothly pass through the screw mounting hole on the mounting body.
[0008] Preferably, the screw mounting hole on the connector housing comprises a large hole section and a small hole section, the screw head of the anti-loosening screw is accommodated in the large hole section, and the internal thread section is arranged in the small hole section.
[0009] Preferably, the length of the small diameter section is greater than the length of the large diameter section.
[0010] Beneficial effects: The utility model connector is improved on the basis of the existing connector, by pre-installing an anti-loosening screw on the connector, an external thread section is provided on the large diameter section of the anti-loosening screw, and an internal thread section is provided in the screw mounting hole on the connector housing and / or the mounting body to match the external thread section on the large diameter section of the anti-loosening screw. After the external thread section is screwed through the internal thread section of the screw mounting hole, the small diameter section of the anti-loosening screw will be able to float freely in the screw mounting hole. When the small diameter section floats axially in the screw mounting hole, the external thread section of the large diameter section interferes with the internal thread section in the screw mounting hole, so that the large diameter section cannot withdraw autonomously and can only be screwed in and withdrawn. The axial floating amount can be adjusted by adjusting the length of the small diameter section of the anti-loosening screw, thereby ensuring that the screw has a large axial floating amount. When installing the product on the PCB board, when one screw is screwed, the other screws can float back to the PCB board and the axial floating amount is large enough to avoid the threaded holes on the load back plate, so that the screws can be screwed one by one without the top of the load back plate falling off.
[0011] The utility model connector assembly adopts the following technical solutions:
[0012] A connector assembly comprises a connector and a load backplate, wherein the connector comprises a connector housing and a transmission assembly installed in the connector housing, wherein the transmission assembly comprises a mounting body and a transmission module installed in the mounting body, wherein the connector housing and the mounting body are provided with corresponding screw mounting holes for mounting screws, the connector further comprises an anti-loosening screw, wherein the anti-loosening screw is movably installed in the screw mounting hole, wherein the rod portion of the anti-loosening screw comprises a large diameter section and a small diameter section, wherein the small diameter section is connected between the screw head and the large diameter section, wherein the diameter of the screw head is larger than the diameter of the large diameter section, wherein the large diameter section is provided with an external thread section, wherein the screw mounting holes on the connector housing and / or the mounting body are provided with an internal thread section matching with the external thread section on the large diameter section, and wherein the load backplate is provided with a threaded hole for threadably matching with the external thread section of the anti-loosening screw.
[0013] Preferably, the internal thread section is arranged in the screw mounting hole on the connector housing, and the hole diameter of the screw mounting hole on the mounting body is larger than the maximum diameter of the rod of the anti-loosening screw so that the anti-loosening screw can smoothly pass through the screw mounting hole on the mounting body.
[0014] Preferably, the screw mounting hole on the connector housing comprises a large hole section and a small hole section, the screw head of the anti-loosening screw is accommodated in the large hole section, and the internal thread section is arranged in the small hole section.
[0015] Preferably, the length of the small diameter section is greater than the length of the large diameter section.
[0016] Beneficial effects: The connector assembly of the utility model is improved on the basis of the existing connector assembly, by pre-installing an anti-loosening screw on the connector, an external thread section is provided on the large diameter section of the anti-loosening screw, and an internal thread section that matches the external thread section on the large diameter section of the anti-loosening screw is provided in the screw mounting hole on the connector housing and / or the mounting body. After the external thread section is screwed through the internal thread section of the screw mounting hole, the small diameter section of the anti-loosening screw will be able to float freely in the screw mounting hole. When the small diameter section floats axially in the screw mounting hole, the external thread section of the large diameter section interferes with the internal thread section in the screw mounting hole, so that the large diameter section cannot withdraw autonomously and can only be screwed in and withdrawn. The axial floating amount can be adjusted by adjusting the length of the small diameter section of the anti-loosening screw, thereby ensuring that the screw has a large axial floating amount. When installing the product on the PCB board, when one screw is screwed, the other screws can float back to the PCB board and the axial floating amount is large enough to avoid the threaded holes on the load back plate, so that the screws can be screwed one by one without the top of the load back plate falling off. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of a connector pre-installed with screws installed on a PCB board in the prior art;
[0018] Figure 2 This is an overall schematic diagram of the connector assembly of the utility model when it is installed on a PCB board;
[0019] Figure 3 This is a cross-sectional view of the connector assembly of the utility model after being installed on a PCB board;
[0020] Figure 4 It is a structural schematic diagram of a connector housing in an embodiment of the connector assembly of the utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the anti-loosening screw in the embodiment of the connector assembly of the utility model;
[0022] Figure 6 This is an exploded schematic diagram of the connector assembly of the utility model being installed on a PCB board;
[0023] In the figure: 1, connector housing; 2, mounting body; 3, screw; 4, retaining ring; 5, screw mounting hole; 501, large hole section; 502, small hole section; 6, PCB board; 601, through hole; 7, load back plate; 701, threaded hole; 8, anti-loosening screw; 801, screw head; 802, small diameter section; 803, large diameter section; 804, external thread section. DETAILED DESCRIPTION
[0024] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.
[0025] The scheme principle of the connector assembly of the utility model is: an anti-loosening screw is adopted, and the anti-loosening screw is a structure with a large head and a thin waist as a whole, and the rod portion of the anti-loosening screw includes a large diameter section and a small diameter section, the large diameter section is located at the other end of the screw away from the screw head, and the small diameter section is connected between the large diameter section and the screw head, an external thread section is provided on the large diameter section, and an internal thread section matching the external thread section on the large diameter section is provided in the screw mounting hole on the connector housing and / or the mounting body, after the external thread section is screwed through the internal thread section of the screw mounting hole, the small diameter section of the anti-loosening screw will be able to float freely in the screw mounting hole, and the external thread section of the large diameter section interferes with the internal thread section in the screw mounting hole so that the large diameter section cannot be withdrawn autonomously and can only be screwed together and withdrawn, and the axial floating amount can be adjusted by adjusting the length of the small diameter section of the anti-loosening screw, thereby ensuring that the screw has a large axial floating amount.
[0026] Embodiment of the connector assembly of the utility model:
[0027] like Figure 2 As shown, the connector assembly includes a connector and a load backplate 7, the connector includes a connector housing 1 and a transmission assembly installed in the connector housing 1, the connector housing 1 is rectangular as a whole, and anti-loosening screws 8 are pre-installed at the four corners of the connector housing 1, the anti-loosening screws 8 pass downward through the connector housing 1 and the transmission assembly, the anti-loosening screws 8 have an external thread section 804, the external thread section 804 is used to screw into the threaded hole on the load backplate 7 on the back of the PCB board 6 to fix the connector on the PCB board 6.
[0028] like Figure 3 As shown in , the transmission assembly specifically includes a mounting body 2 and a transmission module mounted in the mounting body 2. The mounting body 2 is provided with a screw mounting hole 5 for mounting a screw, and the connector housing 1 is correspondingly provided with a screw mounting hole 5 for mounting a screw. The anti-loosening screw 8 passes through the screw mounting holes 5 on the connector housing 1 and the mounting body 2 in sequence from top to bottom. The PCB board 6 is provided with a through hole 601 for passing the screw, and the bottom of the PCB board 6 is provided with a load back plate 7, and the load back plate 7 is provided with a threaded hole 701. The external thread section 804 of the anti-loosening screw 8 is screwed into the threaded hole 701 on the load back plate 7 to fix the connector as a whole on the PCB board 6.
[0029] The structure of the connector housing is as follows Figure 4As shown, screw mounting holes 5 are provided at the four corners of the connector housing 1. The screw mounting holes 5 are variable diameter holes, including a large hole section 501 and a small hole section 502. The small hole section 502 is a threaded hole section, and an internal thread section is provided on the small hole section 502 to cooperate with the external thread section of the anti-loosening screw. The large hole section 501 is used to accommodate the screw head of the anti-loosening screw, so that the screw head of the anti-loosening screw does not protrude from the connector surface after the connector is fixedly installed on the PCB board. The internal thread section is arranged in the screw mounting hole on the connector housing, which can maximize the axial floating amount of the anti-loosening screw.
[0030] The structure of the anti-loosening screw is as follows Figure 5 As shown, it includes a screw head 801 and a rod connected to the screw head 801, the rod includes a large diameter section 803 and a small diameter section 802, the diameter of the small diameter section 802 is smaller than the diameter of the large diameter section 803, the large diameter section 803 is located at the other end of the anti-loosening screw away from the screw head 801, the small diameter section 802 is connected between the screw head 801 and the large diameter section 803, the diameter of the screw head 801 is larger than the diameter of the large diameter section 803, the large diameter section 803 is provided with an external thread section 804, and the small diameter section 802 is a bare rod section. The length of the small diameter section 802 is greater than the length of the large diameter section 803, so that the anti-loosening screw has a larger axial floating amount.
[0031] Figure 6 , an exploded view of the assembly of the connector assembly and the PCB is shown in FIG. The connector and the load back plate 7 are located on opposite sides of the PCB 6, and four anti-loosening screws 8 are installed in four screw mounting holes 5 at the four corners of the connector. The PCB 6 is provided with through holes 601 for inserting screws. The load back plate 7 is a rectangular plate, and threaded holes 701 for screwing the anti-loosening screws 8 are provided at the four corners of the rectangular plate.
[0032] The anti-loosening screw 8 is pre-installed on the connector, such as Figure 3As shown in , the threaded hole section of the screw mounting hole 5 on the connector housing 1 can be threadedly matched with the external threaded section 804 on the large diameter section 803 of the anti-loosening screw. After the large diameter section 803 is screwed through the threaded hole section, the hole diameter of the threaded hole section is larger than the waist of the anti-loosening screw 8, that is, the diameter of the small diameter section 802, and is clearance-matched with the small diameter section 802. The hole diameter of the screw mounting hole 5 on the mounting body 2 is larger than the maximum diameter of the rod of the anti-loosening screw 8. After the large diameter section 803 is screwed through the threaded hole section, the anti-loosening screw 8 can float radially and axially in the screw mounting hole 5 on the mounting body 2. The external threaded section 804 of the anti-loosening screw 8 interferes with the internal threaded section on the connector housing 1, so that the anti-loosening screw 8 will not fall out of the connector. The axial floating amount of the anti-loosening screw 8 is the difference between the length of the small diameter section 802 and the length of the threaded hole section on the connector housing 1. The axial floating amount can be adjusted by adjusting the length of the small diameter section 802 of the anti-loosening screw 8, thereby ensuring that the anti-loosening screw 8 has a large axial floating amount. The hole diameter of the through hole 601 on the PCB board 6 is larger than the maximum diameter of the rod of the anti-loosening screw 8, so that the rod of the anti-loosening screw 8 can float radially and axially in the through hole 601. When the product is installed on the PCB board 6, when one anti-loosening screw 8 is screwed, the other anti-loosening screws 8 can float away from the PCB board 6 and the axial floating amount is large enough to avoid the threaded holes 701 on the load back plate 7, so that the screws can be screwed one by one without the top of the load back plate falling off. In addition, the connector assembly of the utility model does not need to add additional anti-loosening parts, will not affect the product size, is easy to install, and will not lead to an increase in connector costs.
[0033] In other embodiments of the connector assembly, an internal thread section can also be provided in the screw mounting hole on the mounting body. Specifically, the upper hole opening of the screw mounting hole on the mounting body is set as a closing structure, and an internal thread section is provided on the closing structure. The aperture of the internal thread section is larger than the diameter of the small diameter section of the anti-loosening screw and is in clearance with the small diameter section. The aperture of the hole section below the closing structure of the screw mounting hole on the mounting body is larger than the maximum diameter of the rod of the anti-loosening screw. After the external thread section of the anti-loosening screw is screwed over the internal thread section on the mounting body, the anti-loosening screw can float radially and axially in the connector. The external thread section of the anti-loosening screw and the internal thread section on the mounting body interfere with each other, so that the anti-loosening screw will not fall out of the connector. Of course, in other embodiments of the connector assembly, internal thread sections can also be provided in the screw mounting holes on the connector housing and the mounting body at the same time. After the external thread section of the anti-loosening screw is screwed over the connector housing and the internal thread section on the mounting body, it can float radially and axially in the connector. The external thread section of the anti-loosening screw and the internal thread section on the mounting body interfere with each other, so that the anti-loosening screw will not fall out of the connector.
[0034] In other embodiments of the connector assembly, the screw mounting hole on the connector housing can also be a threaded hole, which can be threadedly matched with the external threaded section of the anti-loosening screw. After the anti-loosening screw is installed in the threaded hole, it can float radially and axially in the threaded hole, and the screw head protrudes from the connector housing.
[0035] In other embodiments of the connector assembly, the length of the small diameter section of the anti-loosening screw can be equal to or greater than the length of the large diameter section. The length of the small diameter section affects the axial floating amount of the anti-loosening screw. The specific length can be set according to actual needs without strict restrictions.
[0036] The utility model further provides an embodiment of a connector, the specific structure of which is the same as the embodiment of the connector assembly and the structure of the connector in each implementation mode, and will not be described in detail here.
[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.
Claims
1. A connector, comprising a connector housing (1) and a transmission assembly installed in the connector housing (1), the transmission assembly comprising a mounting body (2) and a transmission module installed in the mounting body (2), the connector housing (1) and the mounting body (2) being provided with screw mounting holes (5) for mounting screws, respectively, characterized in that: The connector further comprises an anti-loosening screw (8), the anti-loosening screw (8) being movably mounted in the screw mounting hole (5), the rod portion of the anti-loosening screw (8) comprising a large diameter section (803) and a small diameter section (802), the small diameter section (802) being connected between the screw head (801) and the large diameter section (803), the diameter of the screw head (801) being larger than the diameter of the large diameter section (803), the large diameter section (803) being provided with an external thread section (804), and the screw mounting hole (5) on the connector housing (1) and / or the mounting body (2) being provided with an internal thread section cooperating with the external thread section (804) on the large diameter section (803).
2. The connector according to claim 1, characterized in that: The internal thread section is arranged in a screw mounting hole (5) on the connector housing (1); the hole diameter of the screw mounting hole (5) on the mounting body (2) is larger than the maximum diameter of the rod of the anti-loosening screw (8), so that the anti-loosening screw (8) can smoothly pass through the screw mounting hole (5) on the mounting body (2).
3. The connector according to claim 2, characterized in that: The screw mounting hole (5) on the connector housing (1) comprises a large hole section (501) and a small hole section (502); a screw head (801) of the anti-loosening screw (8) is accommodated in the large hole section (501), and the internal thread section is arranged in the small hole section (502).
4. The connector according to claim 1, 2 or 3, characterized in that: The length of the small diameter section (802) is greater than the length of the large diameter section (803).
5. A connector assembly, comprising a connector and a load backplane (7), the connector comprising a connector housing (1) and a transmission assembly mounted in the connector housing (1), the transmission assembly comprising a mounting body (2) and a transmission module mounted in the mounting body (2), the connector housing (1) and the mounting body (2) being provided with screw mounting holes (5) for mounting screws, respectively, characterized in that: The connector further comprises an anti-loosening screw (8), wherein the anti-loosening screw (8) is movably mounted in the screw mounting hole (5), the rod portion of the anti-loosening screw (8) comprises a large diameter section (803) and a small diameter section (802), the small diameter section (802) is connected between the screw head (801) and the large diameter section (803), the diameter of the screw head (801) is larger than the diameter of the large diameter section (803), the large diameter section (803) is provided with an external thread section (804), the screw mounting hole (5) on the connector housing (1) and / or the mounting body (2) is provided with an internal thread section that matches the external thread section (804) on the large diameter section (803), and the load back plate (7) is provided with a threaded hole (701) for threadably matching the external thread section (804) of the anti-loosening screw (8).
6. The connector assembly according to claim 5, characterized in that: The internal thread section is arranged in a screw mounting hole (5) on the connector housing (1); the hole diameter of the screw mounting hole (5) on the mounting body (2) is larger than the maximum diameter of the rod of the anti-loosening screw (8), so that the anti-loosening screw (8) can smoothly pass through the screw mounting hole (5) on the mounting body (2).
7. The connector assembly according to claim 6, characterized in that: The screw mounting hole (5) on the connector housing (1) comprises a large hole section (501) and a small hole section (502); a screw head (801) of the anti-loosening screw (8) is accommodated in the large hole section (501), and the internal thread section is arranged in the small hole section (502).
8. The connector assembly according to claim 5, 6 or 7, characterized in that: The length of the small diameter section (802) is greater than the length of the large diameter section (803).