A plug blade fixing device and a plug using the same

Abstract

The application discloses a plug blade fixing device, which comprises a blade mounting seat, a plurality of blade mounting holes are arranged on the bottom surface of the blade mounting seat, blades are arranged in the blade mounting holes, a fixing piece is arranged on the upper side of the blade mounting seat, a plurality of fixing blocks are arranged on the fixing piece and extend downward and are inserted into the blade mounting holes respectively so as to fix the blades in the blade mounting holes, and the problem of blade shaking is solved.

Description

Technical Field

[0001] This invention relates to a plug insert fixing device and its application in plugs. Background Technology

[0002] To ensure safety, household appliances generally use plugs with residual current devices (RCDs). These RCDs contain numerous electronic components and have a complex structure, resulting in poor waterproofing and potential safety hazards. Furthermore, to reduce the size of the RCD, the internal electrical components are positioned axially on the plug prongs. Because of the electronic components between the RCD's back cover and the prongs, the back cover cannot provide adequate support for the plug prongs.

[0003] Currently, to ensure the strength of the inserts, bolts are generally used to fix each insert in the insert hole, or a heat treatment process is used to melt the insert hole before installing the insert into the insert hole, completely fixing the insert to the insert hole and creating a non-removable connection structure. However, this process is complex, and when a single insert is subjected to external force, there is significant stress between the insert and the insert hole. As the usage time increases, the insert is prone to loosening, affecting safety during use. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and provides a plug insert fixing device and its application plug.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A plug prong fixing device is characterized in that: it includes a prong mounting base, a plurality of prong mounting holes are provided on the bottom surface of the prong mounting base, a prong is provided in the prong mounting hole, a fixing member is provided on the upper side of the prong mounting base, and a plurality of fixing blocks are provided on the fixing member that extend downward and are respectively inserted into the prong mounting hole to fix the prong in the prong mounting hole.

[0007] The plug insert fixing device described above is characterized in that a limiting structure is provided between the insert mounting hole and the insert.

[0008] The plug insert fixing device described above is characterized in that: the limiting structure includes a limiting protrusion disposed in the insert mounting hole, and the insert is provided with a limiting recess that cooperates with the limiting protrusion.

[0009] As described above, a plug insert fixing device is characterized in that: a limiting protrusion is provided on both sides of one of the sides of the insert mounting hole, and the insert is provided with two limiting recesses that respectively cooperate with the limiting protrusions on both sides.

[0010] The plug prong fixing device described above is characterized in that: the length of the fixing block is not greater than the depth of the prong mounting hole.

[0011] The plug insert fixing device described above is characterized in that: a bent wire connection part is connected to the upper end of the insert.

[0012] A plug using the above-mentioned plug prong fixing device is characterized in that: it includes a lower plug housing, the plug prong fixing device is installed on the lower plug housing, and the bottom surface of the lower plug housing is provided with a plurality of housing through holes for the prongs to pass through.

[0013] The plug described above is characterized in that a sealing element is provided between the insert mounting base and the lower housing of the plug.

[0014] The plug described above is characterized in that: a sealing ring positioning groove for inserting a sealing element is provided on the bottom inner side of the lower housing of the plug.

[0015] The plug described above is characterized in that: the plug mounting base is provided with a plurality of bolt holes, and the bottom inner side of the plug housing is provided with a plurality of screw holes respectively corresponding to the bolt holes, and bolts that cooperate with the screw holes are provided in the bolt holes.

[0016] The beneficial effects of this invention are:

[0017] This invention provides a fixing member on the upper side of the insert mounting base, and multiple fixing blocks on the fixing member are respectively inserted into the insert mounting holes to fix the inserts in the insert mounting holes, thus solving the problem of insert wobbling. At the same time, a limiting structure is provided between the insert mounting hole and the insert to provide support for the insert, strengthen the strength of the insert set on the insert mounting base, and further solve the problem of insert wobbling. A sealing member is provided between the lower housing of the plug and the insert mounting base, which is sleeved on the insert. The lower housing of the plug and the insert mounting base are locked together by screws, so that the lower housing of the plug and the insert mounting base are tightly pressed against the sealing member, improving the waterproof capability. Attached Figure Description

[0018] Figure 1 This is one of the schematic diagrams of the plug and insert fixing device of the present invention;

[0019] Figure 2 This is an exploded view of the plug and insert fixing device of the present invention;

[0020] Figure 3 This is a schematic diagram of the insert mounting base structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the fastener structure of the present invention;

[0022] Figure 5 This is the second schematic diagram of the plug and insert fixing device of the present invention;

[0023] Figure 6 This is a schematic diagram of the plug structure of the present invention;

[0024] Figure 7 This is an exploded view of the plug of the present invention. Detailed Implementation

[0025] The technical solutions in the embodiments of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. Furthermore, descriptions involving "preferred," "second-best," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "preferred" or "second-best" may explicitly or implicitly include at least one of those features.

[0027] like Figure 1-4 As shown, a plug prong fixing device includes a prong mounting base 1. The bottom surface of the prong mounting base 1 has multiple prong mounting holes 11, and a prong 2 is placed inside each prong mounting hole 11. A fixing member 3 is provided on the upper side of the prong mounting base 1. The fixing member 3 has multiple downward-extending fixing blocks 31 that are respectively inserted into the prong mounting holes 11 to fix the prong 2 within the prong mounting holes 11. After the fixing blocks 31 of the fixing member 3 are inserted into the prong mounting holes 11, the fixing blocks 31 cooperate with the prong mounting holes 11 to clamp the prong 2, thereby securely installing the prong 2 within the prong mounting holes 11 and preventing the prong 2 from wobbling back and forth or left and right. In practical applications, the fixing blocks 31 cooperate with the prong mounting holes 11 to clamp the wider two end faces of the prong 2, improving the stability of the prong 2. Simultaneously, the fixing blocks 31 are fixed within the prong mounting holes 11 by friction, or a snap-fit ​​structure can be used for fixation between the fixing blocks 31 and the prong mounting holes 11.

[0028] like Figure 1-4As shown, a limiting structure 4 is provided between the insert mounting hole 11 and the insert 2. The limiting structure 4 includes a limiting protrusion 41 disposed in the insert mounting hole 11, and a limiting recess 42 on the insert 2 that mates with the limiting protrusion 41. Through the engagement of the limiting protrusion 41 and the limiting recess 42, the insert 2 is more securely mounted in the insert mounting hole 11, and the strength of the insert 2 mounted on the insert mounting base 1 is enhanced. In practical applications, preferably, limiting protrusions 41 are respectively provided on both sides of one side of the insert mounting hole 11, and the insert 2 has two limiting recesses 42 that respectively mate with the limiting protrusions 41 on both sides. By providing two limiting protrusions 41 in the insert mounting hole 11 and two limiting recesses 42 on the insert 2, the insert mounting hole 11 provides balanced support to both sides of the insert 2, enhancing the strength of the insert 2 and further securing the insert 2 in the insert mounting hole 11.

[0029] like Figure 1-4 As shown, the length of the fixing block 31 is not greater than the depth of the insert mounting hole 11, which allows the fixing block 31 and the insert mounting hole 11 to cooperate and clamp the insert 2 to the maximum extent.

[0030] like Figure 1-4 As shown, the upper end of the plug 2 is connected to a bent wire connection part 21, which facilitates the connection of the plug power cord.

[0031] like Figure 6-7 As shown, a plug with a plug prong fixing device includes a lower plug housing 5. The plug prong fixing device is installed on the lower plug housing 5, and the bottom surface of the lower plug housing 5 is provided with a plurality of housing through holes 51 for the prongs 2 to pass through. This solves the problem of the plug prongs 2 wobbling back and forth and left and right. The structure is simple and easy to process and install. There is no need to use bolts to fix each prong in the prong hole, nor is there a need to use a heat treatment process to melt the prong hole and then install the prong into the prong hole to completely fix the prong to the prong hole.

[0032] like Figure 5-7 As shown, a sealing element 6 is provided between the insert mounting base 1 and the lower housing 5 of the plug, and the sealing element 6 is provided with multiple sealing rings 61 that are fitted onto the insert 2. The sealing element 6 can improve the sealing performance between the insert mounting base 1 and the lower housing 5 of the plug, and the sealing rings 61 can improve the sealing performance of the insert mounting hole 11, preventing water from entering the plug.

[0033] like Figure 7 As shown, the bottom inner side of the plug lower housing 5 is provided with a sealing ring positioning groove 52 for the sealing element 6 to be installed, which further improves the sealing performance between the insert mounting base 1 and the plug lower housing 5.

[0034] like Figure 5-7As shown, the insert mounting base 1 has multiple bolt holes 12, and the inner bottom surface of the plug lower housing 5 has multiple screw holes 53 corresponding to the bolt holes 12. Bolts 7 that mate with the screw holes 53 are installed in the bolt holes 12. In practical applications, the insert mounting base 1 has three bolt holes 12, evenly distributed on it, and the inner bottom surface of the plug lower housing 5 also has three screw holes 53 corresponding to the bolt holes 12. The bolts 7 tightly connect the insert mounting base 1 and the plug lower housing 5. The three bolt holes 12 serve as three force points and form a stable surface. The bolts 7 tightly connect the insert mounting base 1 and the plug lower housing 5, compressing the sealing element 6 and completely blocking the gap between the insert 2 and the housing through hole 51 on the plug lower housing 5. Furthermore, the sealing ring positioning groove 52 restricts the deformation of the sealing element 6, further enhancing the waterproof performance between the insert 2 and the plug lower housing 5. Meanwhile, when the insert 2 is subjected to external force, the stress will be transmitted to the three bolts 7 installed on the three bolt holes 12; the three bolts 7 are more reliable than the current scheme of fixing a single insert with a single bolt and the scheme of using heat treatment to melt the insert hole and then installing the insert into the insert hole.

[0035] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A plug prong fixing device, characterized in that: It includes a insert mounting base (1), with multiple insert mounting holes (11) on the bottom surface of the insert mounting base (1), inserts (2) in the insert mounting holes (11), and a fixing member (3) on the upper side of the insert mounting base (1). The fixing member (3) has multiple fixing blocks (31) that extend downward and are respectively inserted into the insert mounting holes (11) so that the inserts (2) are fixed in the insert mounting holes (11).

2. The plug prong fixing device according to claim 1, characterized in that: A limiting structure (4) is provided between the insert mounting hole (11) and the insert (2).

3. The plug prong fixing device according to claim 2, characterized in that: The limiting structure (4) includes a limiting protrusion (41) disposed in the insert mounting hole (11), and the insert (2) is provided with a limiting recess (42) that cooperates with the limiting protrusion (41).

4. A plug insert fixing device according to claim 3, characterized in that: The insert mounting hole (11) has a limiting protrusion (41) located on one side of each side, and the insert (2) has two limiting recesses (42) that cooperate with the limiting protrusions (41) on both sides respectively.

5. A plug prong fixing device according to claim 1, characterized in that: The length of the fixed plug (31) is not greater than the depth of the plug mounting hole (11).

6. A plug prong fixing device according to claim 1, characterized in that: The upper end of the insert (2) is connected to a bent wire connector (21).

7. A plug using the plug prong fixing device described in any one of 1-6 above, characterized in that: The plug includes a lower housing (5), a plug prong fixing device is installed on the lower housing (5), and the bottom surface of the lower housing (5) is provided with a plurality of housing through holes (51) for the prongs (2) to pass through.

8. A plug according to claim 7, characterized in that: A seal (6) is provided between the insert mounting base (1) and the lower housing (5) of the plug.

9. A plug according to claim 8, characterized in that: The bottom inner side of the plug housing (5) is provided with a sealing ring positioning groove (52) for the sealing element (6) to be installed.

10. A plug according to claim 8 or 9, characterized in that: The insert mounting base (1) is provided with multiple bolt holes (12), and the bottom surface of the inner side of the plug housing (5) is provided with multiple screw holes (53) respectively corresponding to the bolt holes (12). The bolt holes (12) are provided with bolts (7) that cooperate with the screw holes (53).

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