Quick-connect fitting mechanism

Abstract

The present invention discloses a quick-connect connector mechanism, including a plug upper cover, a plug lower cover, a banana connector assembly, a fixing assembly and a limiting assembly, wherein the banana connector assembly includes a banana plug, the banana plug includes a plug portion and a solder cup portion, and the solder cup portion is provided with a first notch; the fixing assembly includes a fixing frame, an elastic snap portion and a fixing block, and the elastic snap portion can pass through the first notch and abut against the inner wall of the banana plug; the limiting assembly includes a first abutting portion arranged on the inner wall of the plug upper cover and a second abutting portion arranged on the inner wall of the plug lower cover, and the first abutting portion and the second abutting portion abut against two opposite sides of the fixing block respectively. The present invention includes at least the following advantages: the structural design using the degree of freedom constraint of mechanical press-fit mechanics can better ensure the accuracy of the assembly position and effectively avoid the disadvantage of banana head misalignment.

Description

Technical Field

[0001] The invention relates to the technical field of plugs, in particular to a quick-plug connector mechanism. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] Banana connectors have been gradually applied to industrial instruments, teaching instruments, power testing, radio models, medical instruments, automotive testing, audio equipment and other fields due to their excellent electrical performance and low price.

[0004] As a form of quick-connect connector, banana connectors have good advantages in use. Especially for the solder cup type banana connectors without thread structure, they are widely used due to their simple appearance and structure. At present, conventional banana connectors are assembled in plugs, mostly by glue fixation, which makes the position difficult to control and the process more complicated. In addition, during the use of the plug, if the pulling force is too large, it is easy to cause the banana head to be misaligned and the glue point of the plug to crack.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0006] In order to overcome the defects in the prior art, an embodiment of the present invention provides a quick-plug connector mechanism, which adopts a structural design of mechanical compression fit and freedom constraint of mechanics, better ensures the accuracy of the assembly position, and effectively avoids the disadvantage of banana head misalignment.

[0007] The embodiment of the present application discloses: a quick-connect connector mechanism, including a plug upper cover, a plug lower cover capable of buckling the plug upper cover to form a sealed cavity, and also including a banana connector assembly, a fixing assembly and a limiting assembly.

[0008] The banana connector assembly includes at least one banana plug that can be inserted into the sealed cavity, the banana plug includes a plug portion located outside the sealed cavity, a solder cup portion located inside the sealed cavity, and a first notch is formed on the solder cup portion;

[0009] The fixing assembly includes a fixing frame, an elastic buckle portion arranged on one side of the fixing frame, and a fixing block arranged on the other side of the fixing frame, wherein the elastic buckle portion can pass through the first notch and abut against the inner wall of the banana plug;

[0010] The limiting assembly includes a first abutting portion arranged on the inner wall of the plug upper cover and a second abutting portion arranged on the inner wall of the plug lower cover, and the first abutting portion and the second abutting portion abut against two opposite side surfaces of the fixing block respectively.

[0011] Furthermore, a second notch is provided on the welding cup portion, and the second notch can be embedded in the fixing frame.

[0012] Furthermore, a first positioning hole is provided at the tail of the solder cup portion, and a first positioning column capable of being inserted into the first positioning hole is provided on the inner wall of the plug upper cover.

[0013] Furthermore, a locking groove is formed on the elastic locking portion, and a side wall of the first positioning column has a locking buckle that can be inserted into the locking groove.

[0014] Furthermore, a second positioning hole is formed on the fixing block, and a second positioning column capable of being inserted into the second positioning hole is provided on the inner wall of the plug upper cover, and a free end of the second positioning column abuts against the inner wall of the plug lower cover.

[0015] Furthermore, the first abutting portion includes a plurality of ribs arranged at intervals, and a surface of each of the ribs facing the fixing block abuts against a surface of the fixing block.

[0016] Furthermore, the second abutting portion includes a plurality of arc blocks arranged at intervals, the end surface of each arc block facing the fixed block abuts against the surface of the fixed block, and the side wall of the second positioning column can abut against the side wall of the arc block.

[0017] Furthermore, the outer diameter of the elastic buckle is larger than the inner wall size of the banana connector.

[0018] Furthermore, an inclined curved surface portion is provided on the inner wall of the plug upper cover, and the surface of the inclined curved surface portion abuts against the outer side wall of the banana plug.

[0019] By means of the above technical scheme, the beneficial effects of the present invention are as follows: the plug upper cover, plug lower cover, banana connector assembly, fixing assembly and limiting assembly are closely linked, which effectively overcomes the shortcomings brought by the traditional process; the banana connector assembly is easy to assemble and position, and the mechanical limiting and snap-fitting structures have stable impact resistance. The installed finished product can effectively prevent axial rotation, angular deflection, and plug-in and pull-out problems during the plug-in and pull-out process. At the same time, multiple banana connectors are fixed on the same banana connector fixing frame, which can concentrate the combination tolerance on one module, reduce the accumulated combination tolerance during assembly, and improve positioning accuracy.

[0020] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is an exploded view of the overall device structure in an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of the structure of a banana connector in an embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of a fixing frame in an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of the structure of some devices in an embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of another part of the device structure in the embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the plug cover structure in an embodiment of the present invention.

[0028] The figure marks of the above drawings are: 1. plug upper cover; 2. plug lower cover; 3. banana plug; 4. fixing frame; 5. elastic buckle portion; 6. fixing block; 7. first abutment portion; 8. second abutment portion; 9. second notch; 10. first positioning hole; 11. first positioning column; 12. slot; 13. second positioning hole; 14. second positioning column; 15. inclined curved portion; 31. plug portion; 32. solder cup portion. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] Combination Figures 1 to 6 As shown, this embodiment discloses a quick-connect connector mechanism, including a plug upper cover, a plug lower cover 2 that can be buckled with the plug upper cover and form a sealed cavity, and also includes a banana connector assembly, a fixing assembly, and a limiting assembly. The fixing assembly and the limiting assembly are respectively located in the sealed cavity, and are used to mechanically fix and limit the part of the banana connector assembly inserted into the sealed cavity, replacing the original installation achieved by the dispensing process, and effectively avoiding the occurrence of cracking, dislocation, etc. of the fixed position of the banana connector assembly.

[0032] Combination Figure 1 and Figure 6 As shown, the plug upper cover and the plug lower cover 2 are both rectangular, and the junction of the two side walls of the tail is an arc transition, which increases the aesthetics of the shape on the one hand, and can enhance the overall hardness and optimize the structure on the other hand. Preferably, a notch is correspondingly provided in the middle of the tail of the plug upper cover and the plug lower cover 2, so that the wires located in the sealing cavity can be passed to the outside. The edge of the plug upper cover is evenly provided with a plurality of protrusions, and the edge of the plug lower cover 2 is evenly provided with a pair of grooves corresponding to the protrusions. When the plug upper cover and the plug lower cover 2 are buckled together, the protrusions can be inserted into the grooves to form a snap lock.

[0033] Combination Figure 1 and Figure 2 As shown, the banana connector assembly includes at least one banana plug 3 that can be inserted into the sealed cavity. Preferably, the present application is provided with three banana plugs 3. Preferably, the three rubber plugs are evenly distributed and arranged in parallel, and each of the banana connectors extends in the left-right direction. Each of the banana plugs 3 includes a plug portion 31 located outside the sealed cavity and a solder cup portion 32 located inside the sealed cavity, and a first notch is provided on the solder cup portion 32. Specifically, the plug portion 31 is cylindrical and is used for plugging in external equipment. The solder cup portion 32 and the plug portion 31 are integrally formed, and the welding structure of the solder cup portion 32 is arc-shaped, and the connection structure of the solder cup portion 32 close to the plug portion 31 is hollow cylindrical. The first notch is located at the junction of the plug portion 31 and the solder cup portion 32, that is, at the connection structure of the solder cup portion 32.

[0034] Combination Figure 1 and Figure 3As shown, the fixing assembly includes a fixing frame 4, an elastic buckle portion 5 arranged on one side of the fixing frame 4, and a fixing block 6 arranged on the other side of the fixing frame 4. Specifically, the fixing frame 4 is in the shape of an elongated strip and extends in the front-to-back direction, and its size and material can be adaptively selected according to needs. There are three elastic buckle portions 5, and preferably, each of the buckle portions is in the shape of a truncated cone with its head away from the fixing frame 4. There are two fixing blocks 6, and the upper surface of each fixing block 6 is arranged parallel to the inner side wall of the plug upper cover, and the lower surface of each fixing block 6 is arranged parallel to the inner side wall of the plug lower cover 2.

[0035] Combination Figure 1-Figure 5 As shown, during assembly, firstly, the three banana plugs 3 are embedded in the plug lower cover 2 to preliminarily fix the installation position. By manually or mechanically pushing the fixing frame 4, the three elastic buckle parts 5 are sequentially inserted into the inner cavity of the connecting structure of the solder cup part 32 through the solder cup mechanism and the first notch of the solder cup part 32, and preferably, the outer diameter of the elastic buckle is larger than the inner cavity size of the connecting structure, so that the banana connector and the elastic buckle part 5 are interference-fitted, that is, the elastic buckle part 5 limits all the freedom of the banana connector from the perspective of mechanical fit, thereby making the banana connector assembly fixed relative to the fixing assembly.

[0036] Combination Figure 1 , Figure 4-Figure 6As shown, the limiting assembly includes a first abutment portion 7 arranged on the inner wall of the plug upper cover and a second abutment portion 8 arranged on the inner wall of the plug lower cover 2. Specifically, the first abutment portion 7 includes a plurality of ribs arranged at intervals; the second abutment portion 8 includes a plurality of arc blocks arranged at intervals. Preferably, the ribs are integrally formed with the plug upper cover, and the arc blocks are integrally formed with the plug lower cover 2. The plug upper cover and the plug lower cover 2 can be injection molded, which has a simple process and low cost. After the plug upper cover and the plug lower cover 2 are buckled together, the surface of each rib facing the fixed block 6 abuts and fits with the surface of the fixed block 6, and the end face of each arc block facing the fixed block 6 abuts and fits with the surface of the fixed block 6. Through the above-mentioned setting method, after buckling, the ribs and the arc block both apply a pressing force to the fixed block 6, so that the fixed block 6 is fixedly arranged relative to the ribs and the arc block, that is, the freedom of the fixed block 6 in various directions is constrained; the fixed block 6 and the elastic snap-fitting member are respectively fixedly arranged on the fixing frame 4, so that the entire fixed assembly is fixedly arranged relative to the plug upper cover and the plug lower cover 2, and because the fixed assembly and the banana plug 3 assembly are relatively fixedly arranged, the banana plug 3 assembly is fixedly arranged relative to the plug upper cover and the plug lower cover 2, and the fixed installation of the overall joint mechanism is better achieved by utilizing the principle of mechanical freedom constraint and snap-fit ​​fixing.

[0037] Through the arrangement of the ribs and the arc-shaped blocks, when the quick-connect connector mechanism of the present application is subjected to external force, the force can be better decomposed, thereby effectively reducing vibration and deformation caused by stress concentration.

[0038] Combination Figure 2 As shown, in another embodiment, the welding cup portion 32 is provided with a second notch 9, and the second notch 9 can be embedded in the fixing frame 4. Preferably, the second notch 9 is provided at the connection between the welding structure and the connecting structure of the welding cup portion 32, and the second notch 9 extends along the radial direction of the welding cup portion 32. The banana connector can be embedded in the fixing frame 4 through the second notch 9, so that the installation position of the banana connector assembly can be ensured to be more accurate during the installation process.

[0039] Combination Figures 1 to 4 , Figure 6As shown, in another embodiment, a first positioning hole 10 is provided at the tail of the solder cup portion 32, and a first positioning column 11 capable of being inserted into the first positioning hole 10 is provided on the inner wall of the plug upper cover. Specifically, a first positioning hole 10 penetrating the inner and outer side walls of the solder cup portion 32 is provided at the connection structure, and the first positioning column 11 is integrally formed with the plug upper cover and extends in the up-down direction, so that after the plug upper cover and the plug lower cover 2 are buckled, the first positioning column 11 can be inserted into the first positioning hole 10, thereby limiting the freedom of the banana plug 3 relative to the plug upper cover in the four directions of front, back, left and right. Preferably, a card slot 12 is provided on the elastic buckle portion 5, and a buckle capable of being inserted into the card slot 12 is provided on the side wall of the first positioning column 11. Preferably, the first positioning column 11 can be a cross-shaped column. Through the provision of the above-mentioned card slot 12, when the cross-shaped column is inserted into the first positioning hole 10, it can guide the cross-shaped column, and also limit the rotation of the cross-shaped column in the horizontal plane.

[0040] Combination Figure 1 , Figures 3 to 6 As shown, a second positioning hole 13 is provided on the fixed block 6, and a second positioning column 14 capable of being inserted into the second positioning hole 13 is provided on the inner wall of the plug upper cover, and the free end of the second positioning column 14 abuts against the inner wall of the plug lower cover 2. Specifically, the second positioning hole 13 passes through the upper and lower surfaces of the fixed block 6. The second positioning column 14 is integrally formed with the plug upper cover and extends in the up and down directions, so that after the plug upper cover and the plug lower cover 2 are buckled together, the second positioning column 14 can be inserted into the second positioning hole 13, thereby limiting the freedom of the banana plug 3 relative to the plug upper cover in the four directions of front, back, left and right. Preferably, the side wall of the second positioning column 14 can abut against the side wall of the arc block, so as to play a guiding role in the movement of the second positioning column 14, and the structure is optimized.

[0041] Combination Figure 6 As shown, in another embodiment, an inclined curved surface portion 15 is provided on the inner wall of the plug upper cover, and the surface of the inclined curved surface portion 15 abuts against the outer wall of the banana plug 3. In the above arrangement, after the plug upper cover and the plug lower cover 2 are buckled together, the inclined curved surface portion 15 abuts against the outer wall of the banana plug 3, so that the banana plug 3 can be effectively rotated in a horizontal plane by mechanical limiting.

[0042] In the above-mentioned implementation, the plug upper cover, the plug lower cover 2, the banana connector assembly, the fixing assembly and the limiting assembly are closely linked, which effectively overcomes the shortcomings brought by the traditional process; the banana connector assembly is easy to assemble and position, and the mechanical limiting and snap-fitting structures have stable impact resistance. The installed finished product can effectively prevent axial rotation, angular deflection, and plug-in and pull-out problems during the plug-in and pull-out process. At the same time, multiple banana connectors are fixed on the same banana connector fixing frame 4, which can concentrate the combination tolerance on one module, reduce the accumulated combination tolerance during assembly, and improve positioning accuracy.

[0043] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A quick-connect connector mechanism, comprising a plug upper cover and a plug lower cover capable of buckling with the plug upper cover to form a sealed cavity, characterized in that: It also includes banana connector components, fixing components and limiter components. The banana connector assembly includes at least one banana plug that can be inserted into the sealed cavity, the banana plug includes a plug portion located outside the sealed cavity, a solder cup portion located inside the sealed cavity, and a first notch is formed on the solder cup portion; The fixing assembly includes a fixing frame, an elastic buckle portion arranged on one side of the fixing frame, and a fixing block arranged on the other side of the fixing frame, wherein the elastic buckle portion can pass through the first notch and abut against the inner wall of the banana plug; The limiting assembly comprises a first abutting portion arranged on the inner wall of the plug upper cover and a second abutting portion arranged on the inner wall of the plug lower cover, wherein the first abutting portion and the second abutting portion abut against two opposite side surfaces of the fixing block respectively; A first positioning hole is provided at the tail of the solder cup portion, and a first positioning column capable of being inserted into the first positioning hole is provided on the inner wall of the plug upper cover; The elastic buckle portion is provided with a buckle slot, and the side wall of the first positioning column has a buckle that can be inserted into the buckle slot; A second positioning hole is formed on the fixing block, and a second positioning column capable of being inserted into the second positioning hole is formed on the inner wall of the plug upper cover, and a free end of the second positioning column abuts against the inner wall of the plug lower cover; The second abutting portion includes a plurality of arc blocks arranged at intervals, and the end surface of each arc block facing the fixing block abuts against the surface of the fixing block, and the side wall of the second positioning column can abut against the side wall of the arc block.

2. The quick-connect fitting mechanism according to claim 1, wherein: The welding cup portion is provided with a second notch, and the second notch can be embedded in the fixing frame.

3. The quick-connect fitting mechanism according to claim 1, wherein: The first abutting portion includes a plurality of ribs arranged at intervals, and a surface of each of the ribs facing the fixing block abuts against a surface of the fixing block.

4. The quick-connect fitting mechanism according to claim 1, wherein: The outer diameter of the elastic buckle is larger than the inner wall size of the banana connector.

5. The quick-connect fitting mechanism according to claim 1, wherein: An inclined curved surface portion is provided on the inner wall of the plug upper cover, and a surface of the inclined curved surface portion abuts against an outer side wall of the banana plug.

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