Electrical plug connector
By using self-tapping screws and metal plates with self-tapping threads, the high cost of electrical connector fixing methods has been solved, achieving a stable, vibration-resistant, and impact-resistant connection, simplifying the manufacturing process and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PHOENIX CONTACT GMBH & CO KG
- Filing Date
- 2023-09-14
- Publication Date
- 2026-05-29
AI Technical Summary
Existing electrical connector fixing methods are costly and not simple enough, and it is difficult to maintain a stable connection under vibration or impact.
Using self-tapping screws and a metal plate with self-tapping threads, the plug and mating plug are detachably fixed through threaded connection. The metal plate prevents torsion through shape fit and tilted connecting plate, simplifying the manufacturing process and reducing costs.
It achieves a robust, vibration-resistant, and impact-resistant threaded connection between the plug and the mating plug, reducing manufacturing costs and improving connection reliability.
Smart Images
Figure CN224305023U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an electrical plug connector having a plug, a mating plug for receiving the plug, and a fixing device for detachably fixing the plug to the mating plug, wherein the fixing device has a threaded connection portion. Background Technology
[0002] Such electrical connectors are used, for example, to connect electronic components to circuit boards. The mating plug of such an electrical connector can be, for example, a connector strip soldered onto the circuit board, into which the connector plug can be inserted, wherein the plug can be connected on one side to the corresponding electronic component to be connected to the circuit board.
[0003] To prevent the plug from coming loose from the mating plug due to vibration or impact, it is known to secure the plug and mating plug detachably to each other. This can be achieved, for example, by using a threaded connection or a locking connection to secure the plug and mating plug. Once a threaded connection is established, screws with metric threads and corresponding mating parts, such as four-sided nuts, six-sided nuts, or threaded inserts, are typically used. Utility Model Content
[0004] The purpose of this invention is to provide an electrical plug connector that enables simple and cost-effective fixing between the plug and the mating plug.
[0005] According to this invention, this objective is achieved by utilizing the features of the independent claims. Advantageous designs and improvements of this invention are described in the dependent claims and the following description.
[0006] According to this utility model, an electrical plug connector is proposed, comprising a plug, a mating plug for receiving the plug, and a fixing device for detachably fixing the plug to the mating plug, wherein the fixing device has a threaded connection portion. The electrical plug connector is characterized in that the threaded connection portion has a self-tapping screw with self-tapping threads and a metal plate for screwing into the self-tapping threads, the metal plate having a through hole for receiving the self-tapping screw.
[0007] Compared to screws with metric threads, using self-tapping screws has the following advantages: self-tapping threads are coarser than metric threads and are therefore easier and cheaper to manufacture. This also applies to the mating parts associated with self-tapping screws, which are simple metal plates with through holes for receiving the screw, and are therefore simpler and more cost-effective to manufacture than, for example, four-sided nuts, six-sided nuts, or threaded inserts with metric threads.
[0008] In summary, the threaded connection according to this utility model is particularly capable of achieving a stable, vibration-resistant, and impact-resistant threaded connection between the plug and the mating plug.
[0009] Electrically inserted connectors can have additional fixing devices. These additional fixing devices can be designed identically to the fixing devices and, as described above, also have threaded connections with self-tapping screws and corresponding metal plates.
[0010] The metal plate can be form-fitted to the housing of the plug or mating plug and prevents twisting. For example, the metal plate can be pushed into a slot in the housing. Therefore, the metal plate can be reliably fastened to the plug or mating plug in a simple and cost-effective manner without twisting or displacement of the metal plate relative to the corresponding housing when the self-tapping screw is screwed into the metal plate, and the metal plate is held or fixed to the housing.
[0011] The metal plate can have at least one shape element, such as a protrusion, tab, or the like embedded in a groove in the housing. According to alternative embodiments, the shape element of the housing, such as a protrusion, tab, or the like, can be embedded in the groove of the metal plate. This allows for a simple and cost-effective form-fit connection between the metal plate and the housing, which in particular prevents the metal plate from detaching from or being lost from the housing, and also prevents relative torsion on the housing.
[0012] The metal plate can have connecting plates at its opposite ends, the connecting plates being oriented at an angle relative to the through-hole section of the metal plate. For example, the ends can be bent or folded.
[0013] The angled, bent, or folded ends are used to prevent the metal plate from cutting into the material surrounding the housing when the self-tapping screw is screwed in. This is because the forces and torques generated when the self-tapping screw is screwed into the metal plate are supported on the housing by the metal plate, holding the metal plate within it. Without the angled or machined connecting plate, the edge of the metal plate on the edge side can cut into the housing when the self-tapping screw is screwed in, especially for housings made of plastic. The forces and torques generated during screwing are supported on the housing by the connecting plate through a wider, particularly blunter surface. Alternatively or additionally, the edges of the metal plate can be rounded or deburred to prevent the metal plate from cutting into the surrounding housing.
[0014] Each connecting plate can be configured with a previously described shape element, which is embedded in a corresponding groove in the housing. Therefore, by configuring the connecting plate with the shape element thereon, it is possible to both secure the metal plate to the housing to prevent loss and to reliably support the metal plate within the housing.
[0015] Connecting plates can be made by deformation during stamping or by embossing onto a metal plate.
[0016] For example, a metal sheet can be manufactured by stamping, forming four sides, i.e., having a basic shape such as a rectangle or square. Through holes in a metal sheet can also be made by stamping.
[0017] The metal plate can have a metal plate sidewall that defines a through hole, wherein the metal plate sidewall, in the assembled state, is embedded in the thread groove of the self-tapping thread of the self-tapping screw and abuts against the self-tapping thread of the self-tapping screw.
[0018] The sidewalls of the metal plate can form a profile that defines a through hole, wherein the profile can be shaped according to the type of self-tapping thread or can form a section that forms a self-tapping thread, so that self-tapping screws can be screwed into the metal plate in a simple manner.
[0019] In particular, the contour of the metal plate's sidewall can be matched with the pitch of the self-tapping screw's thread. In this way, it is easier to screw the self-tapping screw into the metal plate.
[0020] The sidewalls of metal sheets can be processed by embossing. This embossing can be performed, in particular, during or after the stamping of the metal sheet.
[0021] The sidewall of the metal plate can have slots that separate the threaded inlet area from the threaded outlet area. This facilitates the easy insertion and screwing of self-tapping screws into the metal plate.
[0022] The thread inlet area and thread outlet area of the metal plate sidewall can be offset from each other axially (viewed along the longitudinal axis of the self-tapping screw). In particular, the offset can be matched with the pitch of the self-tapping thread of the self-tapping screw.
[0023] It is possible to specify exactly two, three, or more slots to divide the sidewall of a metal plate into multiple sidewall segments. Slots reduce the force and torque required to screw self-tapping screws into the metal plate. The slots can be arranged, for example, in a star shape or periodically symmetrically distributed around the longitudinal axis of the threaded connection, that is, in particular, with equidistant angular spacing. The term "periodically symmetrically" here means, in a known manner, that the related geometry or arrangement is formed by relative rotation in predetermined angular increments. For two slots, this means, for example, an angular spacing of 180°, while for three slots, an angular spacing of 120° can be preset.
[0024] Specifically, the diameter of the through-hole in the metal plate can be matched with the diameter of the self-tapping screw. This makes it easier to screw the self-tapping screw into the metal plate.
[0025] It can be specified that self-tapping screws cause plastic deformation or twisting of the metal plate when screwed in, especially in the area of the sidewall of the metal plate.
[0026] As mentioned earlier, through holes can be created in a metal sheet by stamping. Alternatively or additionally, the outer contour of a metal sheet can also be created by stamping.
[0027] The metal sheet can be embossed during or after stamping. Therefore, the connecting plate and / or the sidewall of the metal sheet can be formed into their predetermined shape by embossing.
[0028] In particular, it can manufacture metal sheets through a combination of stamping and embossing processes.
[0029] Self-tapping screws can be made of steel, especially corrosion-resistant steel. Alternatively or additionally, self-tapping screws can have an anti-corrosion coating.
[0030] Metal sheets can be made of steel, especially corrosion-resistant steel. Alternatively or additionally, metal sheets can have an anti-corrosion coating.
[0031] Therefore, self-tapping screws and / or metal plates can be made of strong, wear-resistant materials and, in particular, can be protected from corrosion.
[0032] The metal plate can be secured to the housing of the plug or mating plug by encapsulating it in plastic. As mentioned earlier, the metal plate can also be secured to the housing by pushing it into an opening or slot in the housing.
[0033] Metal plates can also be called screw plates.
[0034] The metal sheet can be a valve nut. Valve nuts are typically characterized by being rolled or double-walled, depending on the type of clamp or spring clip. Currently, the metal sheet can be rolled or folded in a single layer, not in a double-walled manner. Therefore, the metal sheet can be formed, in particular, neither by clamp nor by spring clip. Attached Figure Description
[0035] The present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments.
[0036] in
[0037] Figure 1 A perspective view is shown of the electrical connector according to the present invention in the plugged-in state.
[0038] Figure 2 It shows Figure 1 A schematic diagram of the electrical connector in the decoupled state.
[0039] Figure 3Shown in perspective rear view Figure 1 A schematic diagram of the mating plugs of the electrical connector.
[0040] Figure 4 A schematic diagram of a threaded connection portion of an electrical plug connector, featuring a self-tapping screw and a metal plate, is shown.
[0041] Figure 5A Previous view showed Figure 4 A schematic diagram of the metal plate with threaded connection in the diagram.
[0042] Figure 5B Shown in perspective rear view Figure 4 A schematic diagram of the metal plate with threaded connection in the diagram.
[0043] Figure 6 A schematic diagram of another metal plate used for the threaded connection is shown in front view.
[0044] Figure 7 A schematic diagram of another metal plate used for the threaded connection is shown in front view. Detailed Implementation
[0045] Figure 1 An electrical plug connector 100 according to the present invention is shown.
[0046] The electrical connector 100 has a plug 200 and a mating plug 300. The mating plug 300 is a connector strip and is configured for soldering to a circuit board. For this purpose, the mating plug 300 has solder contacts 310. The mating plug 300 is configured to receive the plug 200.
[0047] The plug 200 has an opening 220 for inserting and connecting an electrical conductor. For this purpose, the conductor end can be clamped and secured within the opening. The conductor housed within the opening 220 is electrically connected to the solder contact 310 in the plugged-in state of the electrical connector 100.
[0048] The electrical connector 100 has two retaining devices 400. Each retaining device 400 has a threaded connection 410.
[0049] The threaded connection 410 has a self-tapping screw 500 with self-tapping threads 510 and a metal plate 600. Figure 3 The metal plate 600 has a through hole 610 for receiving a self-tapping screw 500. The metal plate 600 is provided for screwing in the self-tapping thread 510.
[0050] The metal plate 600 is shaped to fit the housing 320 of the mating plug 300 and prevents twisting. Figure 3For this purpose, the metal plate 600 has two shape elements 620, which are respectively embedded in corresponding grooves 321 of the housing 320 of the mating plug 300. Each metal plate 600 is pushed into a slot 322 of the housing 320.
[0051] The housing 320 is made of plastic. The housing 210 of the plug 200 is also made of plastic.
[0052] As in Figure 4 and Figure 5B As can be seen, the metal plate 600 has a connecting plate 640 at its opposite ends 630, the connecting plate being oriented at an angle of approximately 90° relative to the intermediate section 650 of the metal plate 600 having the through hole 610. This allows the metal plate 600 to be supported on the housing 320 without causing the metal plate 600 to cut into the housing 320 when the self-tapping screw 500 is screwed into it.
[0053] Metal sheet 600 is manufactured by stamping and embossing. Metal sheet 600 is made of corrosion-resistant steel.
[0054] The 500 self-tapping screw is made of corrosion-resistant steel.
[0055] The metal plate 600 has a metal plate sidewall 660 that defines a through hole 610, and the metal plate sidewall is embedded in the thread groove 511 of the self-tapping thread 510 and abuts against the self-tapping thread 510 in the assembled state.
[0056] The metal plate sidewall 660 has a slot 661 that separates the threaded inlet area 662 of the metal plate sidewall 660 from the threaded outlet area 663 of the metal plate sidewall 660. Figure 5A ).
[0057] The threaded inlet area 662 and threaded outlet area 663 of the metal plate sidewall 660 are axially misaligned or offset from each other when viewed along the longitudinal axis L of the self-tapping screw 500. Figure 4 ).
[0058] Figure 6 An alternative design for the metal plate 700 used for the threaded connection 410 is shown. To avoid repetition, only the differences between the metal plate 700 and the metal plate 600 shown with reference to the above embodiment will be described below. Here, the same features are given the same reference numerals. The difference between the metal plate 700 and the metal plate 600 is that the metal plate 700 provides exactly two slots 761 to divide the metal plate sidewall 660 into multiple metal plate sidewall segments 764. In this way, the screwing in of the self-tapping screws 500 is simplified.
[0059] Figure 7An alternative design for the metal plate 800 used for the threaded connection 410 is shown. To avoid repetition, only the differences between the metal plate 800 and the metal plate 600 shown with reference to the above embodiment are described below. Here, the same features are given the same reference numerals. The difference between the metal plate 800 and the metal plate 600 is that the metal plate 800 provides exactly three slots 861 to divide the metal plate sidewall 660 into metal plate sidewall segments 864. In this way, the screwing in of the self-tapping screws 500 is simplified.
[0060] Explanation of reference numerals in the attached figures
[0061] 100 electrical connector
[0062] 200 plug
[0063] 210 Housing
[0064] 220 opening
[0065] 300 Pairing Plug
[0066] 310 Welding contact point
[0067] 320 housing
[0068] 321 Groove
[0069] 322 Grooving
[0070] 400 Fixture
[0071] 410 Threaded connection
[0072] 500 self-tapping screws
[0073] 510 Self-tapping Thread
[0074] 511 Threaded Groove
[0075] 600 Metal Plate / Screw Plate
[0076] 610 Through Hole
[0077] 620 Shape Components
[0078] 630 end
[0079] 640 Connector
[0080] 650 Intermediate Section
[0081] 660 Metal Plate Sidewall
[0082] 661 slot
[0083] 662 Threaded Input
[0084] 663 Thread Export
[0085] 700 metal sheet
[0086] 761 slot
[0087] 764 Metal Plate Sidewall Section
[0088] 800 metal sheet
[0089] 861 slot
[0090] 864 Metal Plate Sidewall Section
Claims
1. An electrical plug connector (100) comprising a plug (200), a mating plug (300) for receiving the plug (200), and a fixing device (400) for detachably fixing the plug (200) to the mating plug (300), wherein the fixing device (400) has a threaded connection portion (410). Its features are, The threaded connection portion (410) has a self-tapping screw (500) with self-tapping threads (510), and the threaded connection portion (410) has a metal plate (600, 700, 800) for screwing into the self-tapping threads (510), the metal plate having a through hole (610) for receiving the self-tapping screw (500). The metal plates (600, 700, 800) have metal plate sidewalls (660) defining the through holes (610), wherein the metal plate sidewalls (660) are, in the assembled state, embedded in the thread groove (511) of the self-tapping threads (510) of the self-tapping screws (500) and abut against the self-tapping threads (510) of the self-tapping screws (500). The metal plate sidewall (610) has slots (661, 761, 861) that separate the threaded inlet area (662) and the threaded outlet area (663) of the metal plate sidewall (660). Viewed along the longitudinal axis (L) of the self-tapping screw (500), the thread-in region (662) and the thread-out region (663) of the metal plate sidewall (660) are offset (V) from each other in the axial direction.
2. The electrical connector according to claim 1, characterized in that, The metal plates (600, 700, 800) are shaped to fit the housing (210) of the plug (200) or the housing (320) of the mating plug (300) and are prevented from twisting.
3. The electrical connector according to claim 2, characterized in that, The metal plates (600, 700, 800) have at least one shape element (620), such as a protrusion or tab embedded in a groove (321) of the housing (320).
4. The electrical connector according to any one of the preceding claims, characterized in that, The metal plates (600, 700, 800) have connecting plates (640) at opposite ends (630), the connecting plates being oriented at an angle relative to the intermediate section (650) of the metal plates (600, 700, 800) having the through hole (610).
5. The electrical connector according to claim 3, characterized in that, Each of the connecting plates (640) is provided with a shape element (620) which is embedded in a corresponding groove (321) of the housing (320).
6. The electrical connector according to claim 1, characterized in that, The metal plate sidewall (660) is provided with exactly two, exactly three or more slots (661, 761, 861) to divide the metal plate sidewall (660) into multiple metal plate sidewall segments (764, 864).
7. The electrical connector according to any one of the preceding claims, characterized in that, The through holes (610) are made by stamping on the metal plates (600, 700, 800) and / or the outer contours of the metal plates (600, 700, 800) are made by stamping.
8. The electrical connector according to any one of the preceding claims, characterized in that, The self-tapping screw (500) is made of steel and / or has an anti-corrosion coating. and / or The metal plates (600, 700, 800) are made of steel and / or have an anti-corrosion coating.
9. The electrical connector according to any one of the preceding claims, Its features are, The metal plates (600, 700, 800) are fixed to the plug (200) or the mating plug (300) by being encapsulated in plastic.