A small converter anti-misplugging structure

Abstract

The present invention discloses a structure for preventing mis-pulling of a small converter, comprising a shell, a wiring frame provided on the inner side of the shell wiring terminal, a wire pressing screw threadedly connected to the shell wiring terminal and extending into the wiring frame, and characterized in that: it also comprises a rotating shaft, a crank, a connecting rod, a buckle, a slider, and a reset spring; the rotating shaft is rotatably mounted on the shell wiring terminal and its two ends extend to the inner and outer sides of the shell respectively; the crank is rotatably mounted on the rotating shaft and located on the inner side of the shell; the two ends of the connecting rod are rotatably mounted on the side of the crank and the upper end of the buckle and can move up and down under the drive of the crank; the buckle is arranged below the crank and can be inserted into the cabinet or retracted into the shell under the push and pull of the connecting rod; the slider is slidably mounted in the wiring frame; the two ends of the reset spring are respectively fixed on the slider and the inner side of the shell wiring terminal. The present invention has a reasonable structure and is simple to operate, can effectively prevent the converter from being pulled out of the cabinet when the phase is not disconnected, and has high safety.

Description

Technical Field

[0001] The invention belongs to the field of low-voltage electrical appliances, and in particular relates to a small-sized converter anti-misplugging structure. Background Art

[0002] Small converters are often used in the low-voltage electrical appliance industry. Usually, one end (wiring end) of the small converter housing is provided with at least two wiring holes for plugging in wires. The wires pass through the wiring holes and extend into the housing to contact the wiring frame set in the housing, and then are pressed into the wiring frame by the wire pressing screws; the other end of the small converter housing is plugged into the low-voltage cabinet. With the demand for miniaturization of converters, the product thickness is designed to be smaller and smaller. When the converter is pulled out of the cabinet, if the converter is not disconnected, there may be a safety risk. Therefore, it is necessary to design a structure to prevent the converter from being accidentally pulled out of the cabinet. Summary of the invention

[0003] In view of the above problem, an object of the present invention is to provide a small converter anti-mis-pulling structure for preventing the converter from being pulled out of the cabinet when the phase is not disconnected.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A structure for preventing mis-pulling of a small converter comprises a shell, a wiring frame is arranged on the inner side of a wiring terminal of the shell, a wire pressing screw is threadedly connected to the wiring terminal of the shell and extends into the wiring frame, and the structure also comprises a rotating shaft, a crank, a connecting rod, a buckle, a slider and a reset spring; the rotating shaft is rotatably mounted on the wiring terminal of the shell and its two ends extend to both sides of the inside and outside of the shell respectively; the crank is rotatably mounted on the rotating shaft and is located on the inner side of the shell; the two ends of the connecting rod are rotatably mounted on the side of the crank and the upper end of the buckle and can move up and down under the drive of the crank; the buckle is arranged under the crank and can be clamped into the cabinet or retracted into the shell under the push and pull of the connecting rod; the slider is slidably mounted in the wiring frame; the two ends of the reset spring are respectively fixed on the slider and the inner side of the housing terminal; after the wire pressing screw is screwed into the housing terminal, the slider slides under the push of the clamping screw and presses the top of the buckle that has been clamped into the cabinet; after the wire pressing screw is screwed out of the housing terminal, the slider is pulled back to its original position by the reset spring and no longer presses the top of the buckle.

[0006] Furthermore, there are two return springs, which are respectively arranged on both sides of the slider.

[0007] Furthermore, a guide groove is provided in the wiring frame to provide guidance for the slider; and a convex strip is provided below the slider and is slidably installed in the guide groove.

[0008] Furthermore, in order to facilitate the insertion of the converter into the cabinet, the lower end of the buckle is inclined downward from the surface away from the shell wiring terminal toward the surface close to the shell wiring terminal.

[0009] Furthermore, a pressure plate for pressing the top of the buckle is vertically fixed on the surface of the sliding block facing the buckle.

[0010] Furthermore, when the lower end of the buckle extends out of the shell or is inserted into the cabinet, the upper end of the connecting rod is located below the rotating shaft; when the lower end of the buckle is completely retracted into the shell, the upper end of the connecting rod is located above the rotating shaft.

[0011] Furthermore, a knob for assisting the rotation of the shaft is provided on one end of the shaft located outside the connection terminal of the housing.

[0012] Furthermore, the knob is in the shape of a straight line, a circle, or a cross.

[0013] Furthermore, patterns, words or colors for indicating that the buckle is in a state of being inserted into the cabinet and for indicating that the buckle is in a state of being retracted into the shell are respectively provided on the outer side surface of the knob.

[0014] Furthermore, a reset torsion spring is sleeved on the rotating shaft, one end of which is fixed on the knob, and the other end is fixed on the outer side wall of the shell terminal; when the buckle is inserted into the cabinet, the reset torsion spring is in a free state; when the buckle is retracted into the shell, the reset torsion spring is in an energy storage state.

[0015] The invention has reasonable structure and simple operation, can effectively prevent the converter from being pulled out of the cabinet when the phase is not disconnected, and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of the anti-misplugging structure of the small converter according to the present invention;

[0018] Figure 2 for Figure 1 The main view;

[0019] Figure 3 for Figure 1 Rear view of

[0020] As shown in the figure: 1-housing, 2-wiring frame, 3-wire pressing screw, 4-rotating shaft, 5-crank, 6-connecting rod, 7-buckle, 8-slider, 9-reset spring, 10-guide groove, 11-pressure plate, 12-knob, 13-reset torsion spring. DETAILED DESCRIPTION

[0021] The following is an explanation of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Embodiment 1:

[0025] like Figure 1-3 As shown, a structure for preventing mis-removal of a small converter of the present invention comprises a shell 1 provided with a plurality of wiring holes at a wiring terminal, a wiring frame 2 (including two groups of upper and lower wiring frames 2) connected with the wiring holes is provided on the inner side of the wiring terminal of the shell 1, a pressing screw 3 is threadedly connected to the wiring terminal of the shell 1, passes through the shell 1 and extends into the wiring frame 2, and further comprises a rotating shaft 4, a crank 5, a connecting rod 6, a buckle 7, a slider 8, and a reset spring 9.

[0026] The rotating shaft 4 is rotatably mounted on the wiring terminal of the housing 1 and its two ends extend to the inner and outer sides of the housing 1 (located on the housing 1 between the upper and lower wiring frames 2), and is used to drive the crank 5 to rotate.

[0027] The crank 5 is rotatably mounted on the rotating shaft 4 and is located inside the housing 1 (preferably, the crank 5 is disposed in a gap between the upper and lower sets of wiring frames 2 and can rotate in the gap). It is used to drive the buckle 7 to move up or down. The crank 5 is rectangular (with rounded corners), and the middle part is fixed on the rotating shaft 4.

[0028] The two ends of the connecting rod 6 are rotatably mounted on the side of the crank 5 and the upper end of the buckle 7 and can move up and down driven by the crank 5.

[0029] The buckle 7 is arranged below the crank 5 and can be moved up and down. Its lower end can be inserted into the cabinet (inside the preset clearance groove) or retracted into the housing 1 (and the wiring hole 2) after passing through the wiring frame 2 and the housing 1 under the push and pull of the connecting rod 6. That is to say, the buckle 7 can be moved up and down to extend out of the housing 1 or retract into the housing 1. When the lower end of the buckle 7 extends out of the housing 1 or is inserted into the cabinet, the upper end of the connecting rod 6 is located below the rotating shaft 4; when the lower end of the buckle 7 is completely retracted into the housing 1, the upper end of the connecting rod 6 is located above the rotating shaft 4. In order to facilitate the insertion of the converter into the cabinet, the lower end of the buckle 7 is tilted downward from the surface away from the wiring terminal of the housing 1 to the surface close to the wiring terminal of the housing 1 (that is, the surface facing the cabinet is an inclined surface, and the surface facing the wiring terminal of the housing 1 is a vertical surface).

[0030] The slider 8 is slidably mounted in the wiring frame 2, and both the upper and lower ends of the slider 8 are slidably mounted in the wiring frame 2. A guide groove 10 is provided in the wiring frame 2 to provide guidance for the slider 8, and the number of the guide grooves 10 is four (a pair each at the upper and lower ends); the slider 8 is provided with corresponding convex strips slidably mounted in the guide grooves 10 (the corresponding number of convex strips is also four, a pair each at the upper and lower ends). A pressing plate 11 for pressing the top of the buckle 7 is vertically fixed on the surface of the slider 8 facing the buckle 7, and the existence of the pressing plate 11 can reduce the movement stroke of the slider 8.

[0031] The two ends of the return spring 9 are respectively fixed on the slider 8 and the inner side of the connection terminal of the housing 1. There are two return springs 9 and they are respectively arranged on both sides of the slider 8.

[0032] After the pressing screw 3 is screwed into the terminal of the housing 1 (the wire has been inserted), the slider 8 slides under the push of the pressing screw 3 (slides toward the buckle 7 until the pressure plate 11 presses on the top of the buckle 7, and the return spring 9 is in a stretched state) and presses the top of the buckle 7 that has been inserted into the cabinet. After the pressing screw 3 is screwed out of the terminal of the housing 1, the slider 8 is pulled back to its original position by the return spring 9 (the return spring 9 is reset) and no longer presses the top of the buckle 7.

[0033] Here’s how it works:

[0034] Before pulling out the converter, the clamping screw 3 must be unscrewed, the wire removed, the converter disconnected, the slider 8 reset, the top of the buckle 7 no longer pressed, and then the shaft 4 is rotated to make the crank 5 drive the buckle 7 to retract into the housing 1, and then the converter can be taken out.

[0035] The specific steps are as follows: when the clamping screw 3 is screwed out from the terminal of the housing 1, the slider 8 moves to the starting position (away from the position of the buckle 7) along the guide groove 10 in the wiring frame 2 under the pull of the return spring 9, and the pressure plate 11 of the slider 8 no longer presses the top of the buckle 7; then the shaft 4 is rotated, and the shaft 4 drives the crank 5 to rotate, and the crank 5 pulls the buckle 7 upward and retracts into the housing 1 through the connecting rod 6, so that the converter is unlocked, and then the entire converter can be pulled out of the cabinet.

[0036] Simply put, only after the compression screw 3 is screwed out of the converter and the slider 8 is reset, the crank 5 can drive the buckle 7 to move upward and unlock through the connecting rod 6, and then the converter can be pulled out of the cabinet.

[0037] Embodiment 2:

[0038] The difference between this embodiment and the first embodiment is that:

[0039] like Figure 1 and Figure 2 As shown, a knob 12 for assisting the rotation of the shaft 4 is provided on one end of the shaft 4 located outside the terminal of the housing 1. The existence of the knob 12 can make it more convenient to rotate the shaft 4 (unlock). The knob 12 is in the shape of a straight line, a circle or a cross. Figure 1 and Figure 3 A straight line (or oval) shape is adopted, and the outer surface of the knob 12 can also be provided with anti-slip grooves.

[0040] The outer surface of the knob 12 is provided with patterns, words or colors for indicating that the buckle 7 is in the state of being inserted into the cabinet and in the state of being retracted into the housing. For example, one end of the straight-shaped knob is red (indicating locking, i.e., the buckle 7 is retracted into the housing and the converter cannot be pulled out), and the other end is green (indicating unlocking, i.e., the buckle 7 is extended out of the housing and inserted into the cabinet and the converter can be pulled out).

[0041] After the compression screw 3 is screwed out of the converter, the slider 8 is reset under the action of the reset spring 9 and no longer presses the buckle 7. The knob 12 is rotated, and the knob 12 drives the rotating shaft 4 and the crank 5 thereon to rotate. The crank 5 then drives the buckle 7 to move upward and unlock through the connecting rod 6, and the converter can be pulled out of the cabinet.

[0042] Embodiment three:

[0043] The difference between this embodiment and the second embodiment is that:

[0044] like Figure 3 As shown, a return torsion spring 13 is sleeved on the rotating shaft 4, one end of the return torsion spring 13 is fixed on the knob 12, and the other end is fixed on the outer side wall of the terminal of the shell 1; when the buckle 7 is inserted into the cabinet (or extended out of the shell), the return torsion spring 13 is in a free state; when the buckle 7 is retracted into the shell 1, the return torsion spring is in an energy storage state.

[0045] Therefore, when the converter is pulled out of the cabinet, the knob 12 is released, and the knob 12 rotates under the action of the reset torsion spring 13, driving the shaft 4, the crank 5 and the connecting rod 6 to rotate, and the buckle 7 is driven to move downward and reset through the connecting rod 6.

[0046] Similarly, when the converter is inserted into the cabinet, the lower end of the buckle 7 moves upward under the pressure of the inner side surface of the cabinet (the surface of the lower end of the buckle 7 facing the cabinet is an inclined surface, so when the buckle 7 extends into the cabinet and contacts the inner side surface of the cabinet, it will move upward under the pressure of the inner side surface of the cabinet), until the converter is inserted into place, the buckle 7 will move downward under the action of the reset torsion spring 13, so that the lower end of the buckle 7 is stuck in the preset make way groove on the cabinet, and the converter is stuck (the surface of the buckle 7 facing the shell terminal is a vertical surface), making it difficult to pull out the converter.

[0047] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0048] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A structure for preventing mis-removal of a small converter, comprising a housing, a wiring frame provided inside a wiring terminal of the housing, a wire pressing screw threadedly connected to the wiring terminal of the housing and extending into the wiring frame, characterized in that: It also includes a rotating shaft, a crank, a connecting rod, a buckle, a slider, and a reset spring; the rotating shaft is rotatably mounted on the shell terminal and its two ends extend to the inner and outer sides of the shell respectively; the crank is rotatably mounted on the rotating shaft and is located on the inner side of the shell; the two ends of the connecting rod are rotatably mounted on the side of the crank and the upper end of the buckle and can move up and down under the drive of the crank; the buckle is arranged under the crank and can be inserted into the cabinet or retracted into the shell under the push and pull of the connecting rod; the slider is slidably mounted in the wiring frame; the two ends of the reset spring are respectively fixed on the slider and the inner side of the shell terminal; after the pressing screw is screwed into the shell terminal, the slider slides under the push of the clamping screw and presses the top of the buckle that has been inserted into the cabinet; after the pressing screw is screwed out of the shell terminal, the slider is pulled back to its original position by the reset spring and no longer presses the top of the buckle.

2. The anti-mis-removal structure of a small converter according to claim 1, characterized in that: The number of the return springs is two and they are respectively arranged on both sides of the slider.

3. The anti-mis-removal structure of a small converter according to claim 1, characterized in that: The lower end of the buckle is inclined downward from a surface away from the shell wiring terminal toward a surface close to the shell wiring terminal.

4. The anti-mis-removal structure of a small converter according to claim 1, characterized in that: A pressing plate for pressing the top of the buckle is vertically fixed on the surface of the sliding block facing the buckle.

5. The anti-mis-removal structure of a small converter according to claim 1, characterized in that: A guide groove for guiding the slide block is arranged in the wiring frame; and a convex strip slidably installed in the guide groove is correspondingly arranged on the slide block.

6. The anti-mis-removal structure of a small converter according to claim 1, characterized in that: When the lower end of the buckle extends out of the shell or is inserted into the cabinet, the upper end of the connecting rod is located below the rotating shaft; when the lower end of the buckle is completely retracted into the shell, the upper end of the connecting rod is located above the rotating shaft.

7. The anti-mis-removal structure of a small-sized converter according to any one of claims 1 to 6, characterized in that: A knob for assisting the rotation of the rotating shaft is arranged on one end of the rotating shaft located outside the connection terminal of the shell.

8. The anti-mis-removal structure of a small-sized converter according to claim 7, characterized in that: The knob is in the shape of a straight line, a circle or a cross.

9. The anti-mis-removal structure of a small converter according to claim 8, characterized in that: Patterns, words or colors for indicating that the buckle is in a state of being inserted into the cabinet and for indicating that the buckle is in a state of being retracted into the shell are respectively provided on the outer side surface of the knob.

10. The anti-mis-removal structure of a small converter according to claim 7, characterized in that: A reset torsion spring is sleeved on the rotating shaft, one end of which is fixed on the knob, and the other end is fixed on the outer side wall of the shell terminal; when the buckle is inserted into the cabinet, the reset torsion spring is in a free state; when the buckle is retracted into the shell, the reset torsion spring is in an energy storage state.

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