CN105576408B - Converter with button selection function - Google Patents

Abstract

The invention discloses a converter with a button selection function, which comprises a housing provided with a plug through hole, at least two types of plugs are arranged in the housing, and the plugs can be stretched out or retracted from the plug through hole, The plug is provided with a plug operation key to control the telescopic movement of the plug, and each plug is correspondingly provided with a control frame; the control frame is provided with an upper positioning step and a lower positioning step, and the upper positioning step and the lower positioning step correspond to the control frame. The protruding position and the contracting position of the plug are respectively adapted; the control frame is respectively provided with shrapnel, and the housing is provided with a selection key, which can slide between the positions corresponding to each shrapnel, and squeeze the corresponding The shrapnel; the shrapnel is an elastic sheet. The beneficial effect of the invention is that it has a good and reliable internal electrical connection.

Description

Converter with key select function

technical field

The invention relates to electrical equipment, in particular to a converter with key selection function.

Background technique

The socket provides convenience for people's daily electricity consumption. Different countries often adopt different electrical interface standards, resulting in different socket standards. In addition to China's national standard, the more common ones are the American standard, referred to as the American standard, the European standard, referred to as the European standard, the British standard, referred to as the British standard, and the Australian standard. Referred to as the Australian standard. In order to help the electronic devices that are only compatible with national standard sockets to be used normally, people who go abroad for business or tourism often need to carry converters. If you only travel to and from one country, you only need to carry a converter from the country's standard to the Chinese standard. If you need to shuttle between multiple countries, you may need to carry multiple converters according to different destinations, which is not ideal in terms of convenience and economy.

The Chinese patent document with the publication number "CN101872911A" disclosed on October 27, 2010 the "rotary selection push-out type multi-country power adapter", which includes a housing and a socket arranged in the housing, and at least two different The housing includes a top cover and a base, the base is rotatably assembled on the top cover relative to a central rotating shaft, the socket is installed in the top cover, and the pins of different specifications are installed in the base and The base rotates synchronously, and the pins of different specifications are distributed circumferentially around the central rotating shaft. retracted to the hidden position in the housing; the side wall of the upper cover is provided with a positioning chute extending parallel to the extending direction of the pin, corresponding to the positioning chute is provided with a sliding component that can slide freely along the positioning chute, when When one of the pins rotates to the functional area of the sliding assembly, the sliding assembly pushes the pin out of the housing to its working position.

The technical solution preliminarily realizes the adaptation to various sockets. However, the method for adapting various sockets in this solution is to rotate the pins as a whole, which affects the stability of the electrical connection relationship inside the converter, thereby reducing the reliability and safety of the product.

Contents of the invention

The technical problem to be solved by the present invention is that the reliability of the internal electrical connection relationship of the existing multi-country converter is low, thereby providing a multi-country converter with good and reliable internal electrical connection relationship.

In order to achieve the above object, the present invention adopts the following technical solution: a converter with button selection function, including a housing provided with plug through holes, at least two types of plugs are arranged in the housing, and the plugs can be passed through the plugs. The plug is provided with a plug operation key to control the telescopic movement of the plug, and each plug is correspondingly provided with a control frame; the control frame is provided with an upper positioning step and a lower positioning step, and the upper positioning step and the lower positioning step The positioning steps are respectively adapted to the extended position and the retracted position of the plug corresponding to the control frame; the control frame is respectively provided with shrapnel, and the housing is provided with a selection key, and the selection key can slide between positions corresponding to each shrapnel , and squeeze the elastic sheet corresponding to the position; the elastic sheet is a thin sheet with elasticity.

In some existing converters, several plugs are shrunk in the housing, and when needed, the plugs can be slid out for electrical connection by pressing the operation keys provided on the plugs. In order to ensure that the plugs in this type of structure can be reliably fixed at the extended position and the retracted position, a control frame is designed for each plug in this technical solution, and the control frame is provided with two positioning steps up and down in the telescopic direction of the plug. As a position-limiting structure, it corresponds to the extended position and the contracted position of the plug respectively. When the lower limit structure is in the limit state, the retracting action of the extended plug is restricted; when the upper limit structure is in the limit state, the extending action of the retracted plug is restricted. Under such a design, the telescopic position of the plug is effectively limited, and the electrical connection relationship in the entire converter is greatly improved. In order to facilitate the user to operate the control frame, this project designs a shrapnel as an elastic part for the control frame, one end is connected to the control frame, and the other end is connected to the selection key. When using it, you only need to press the selection key to push the control frame to generate displacement, so that the upper, The lower positioning step takes place or cancels the limit action. In order to effectively select the control frame for the limit action, the scheme designs the selection key to be able to slide on each position of the shrapnel.

Preferably, the control frame includes a cross arm extending in the direction of the selection key, the outer end of the cross arm is provided with a groove opening downward, and the inner wall of the housing is provided with an elastic piece lower groove opening upward, the elastic piece The two ends are clamped between the groove and the lower groove of the shrapnel. In order to adapt to the shape of the shrapnel and exert its elastic structure, the project designs the shrapnel between the groove and the lower groove of the shrapnel.

Preferably, each of the elastic pieces is of an integrated structure, and the upper part of the integrated elastic piece is provided with a longitudinal notch extending along the expansion and contraction direction of the plug. In order to optimize the shrapnel effect, reduce the number of parts, and improve assembly efficiency, this plan designs an integrated shrapnel to replace each independent shrapnel. Correspondingly, the selection key only needs to be fixed on one part of the split shrapnel.

As a preference, the downward-opening grooves provided on the outer ends of the cross arms of each of the control frames are combined into intermittent upper grooves of the shrapnel; the integrated shrapnel can slide within the limit of the upper groove of the shrapnel and the lower groove of the shrapnel . In this solution, the integrated shrapnel is set to be slidable, and by sliding the integrated shrapnel, the selection key fixed on it can be driven to slide left and right to realize the selection of the control frame.

Preferably, the positioning surfaces of the upper positioning step and the lower positioning step are planes perpendicular to the telescopic direction of the plug. The positioning surface of the upper positioning step and the lower positioning step is designed as a plane perpendicular to the telescopic direction of the plug, and the corresponding structure is also designed on the plug for matching positioning, which can form the best positioning effect. In practical application, in order to reduce the friction force of the positioning surface when pushing out and retracting the control frame, the positioning surface of the upper positioning step can be designed to be slightly inclined downward, and the positioning surface of the lower positioning step can be designed to be slightly inclined upward.

Preferably, it also includes a socket assembly; the socket assembly is provided with several spaced protrusions near the outer end of the cross arm, and the outer end of the cross arm is positioned between the spaced protrusions. In order to better limit the position of the control frame in the housing, several spaced protruding points are arranged on the socket assembly in this solution, and the spaced protruding points are used to space and position the outer ends of the transverse arms of each control frame. Convenient selection keys for more accurate selection to the desired control rack.

As preferably, the width of the inner side end of the selection key is adapted to the distance between the adjacent spacing bumps; the upper surface of the inner side end of the selection key fits tightly with the lower surface of the spacing bump, and the lower surface of the spacing bump is provided with hemispherical damping Bump. When the selection key slides horizontally between each control frame, the position where the control frame cannot be selected will produce a damping feel due to the existence of the hemispherical damping bump; only when the selection key slides to the position of the control frame can the selection press be performed , the damping feel disappears. Such a design helps the user to feel whether it is in a position that can be pressed and selected by hand without observing with the naked eye, which is convenient for use.

Preferably, on both sides of the upper surface of the inner end of the selection key, grooves for the selection key are provided along the elastic deformation direction of the shrapnel, and the gap between the grooves matches the gap between the damping protrusions. When the selection key is pressed, the selection key groove acts as a guide, helping to improve the feeling when the selection key is pressed.

Preferably, several plug guide posts are provided on the socket assembly and/or in the housing parallel to the sliding direction of the plug, and the plug is provided with through holes for the guide posts; the plug guide posts and the guide post through holes are socketed together. In this scheme, several plug guide posts are designed, and the plug is socketed on the plug guide post through the guide post through hole, which can make the sliding more stable and not easy to deviate, which is helpful for the selection of the selection key to the control frame and the accuracy of the pressing operation sex.

To sum up, the beneficial effect of the present invention is that it has a good and reliable internal electrical connection.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of the present invention,

Fig. 2 is a schematic diagram of the external structure of another side of the present invention,

Fig. 3 is an exploded view of main components of the present invention,

Fig. 4 is a schematic diagram of the internal structure of the present invention,

Figure 5 is a top view of the connection relationship between the plug, the control frame, the shrapnel and the selection key,

Figure 6 is a schematic diagram of the structure of the American standard plug,

Figure 7 is a schematic diagram of the structure of the control frame adapted to the American standard plug,

Figure 8 is a schematic diagram of the structure of the selection key,

Fig. 9 is a schematic diagram of the structure of the socket assembly,

Fig. 10 is a schematic diagram when the plug is in a retracted state,

Figure 11 is a schematic diagram when the control frame is pushed away and the plug is in an extendable state,

Fig. 12 is a schematic diagram of when the control frame is retracted and positioned after the plug is fully extended.

Among them: 1 upper cover, 2 lower cover, 5 shrapnel, 6 selection key, 7 socket assembly, 8USB assembly, 9 safety tube, 10 conductive PCB assembly, 11 protective door assembly, 12 fixed cover, 21 shrapnel lower slot, 31 American standard plug, 32 European standard plug, 33 British standard plug, 34 Australian standard plug, 41 American standard plug control frame, 42 European standard plug control frame, 43 British standard plug control frame, 44 Australian standard plug control frame, 45 horizontal Arm, 46 trailing arm, 61 shrapnel through hole, 62 selection key groove, 71 spacer bump, 72 plug guide post, 311 American standard plug operation key, 321 European standard plug operation key, 331 British standard plug operation key, 341 Australian Standard plug operation key, 451 upper groove of shrapnel, 461 upper positioning step, 462 lower positioning step, 711 damping bump.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The embodiment shown in Fig. 1 and Fig. 2 is a converter with button selection function, including an upper cover 1 and a lower cover 2 constituting the housing, the top of the upper cover is provided with a socket through hole, and the bottom of the lower cover A plug through hole is provided; a selection key 5 is provided on one side of the housing, and a plug operation key is provided on the other side of the housing. The multi-country converter in this example is equipped with an American standard plug, a European standard plug, a British standard plug and an Australian standard plug, as shown in the American standard plug in Figure 6, and each plug is provided with an operation key, which is exposed on the shell. There are operation keys 311 for the American standard plug, 321 for the European standard plug, 331 for the British standard plug and 341 for the Australian standard plug outside the body.

As shown in Figure 3, the multi-country converter is also equipped with shrapnel 5, socket assembly 7, USB assembly 8, safety tube 9, conductive PCB assembly 10, protection door assembly 11, fixed cover plate 12 and American standard plug 31 , European standard plug 32, British standard plug 33, Australian standard plug 34, American standard plug control frame 41, European standard plug control frame 42, British standard plug control frame 43 and Australian standard plug control frame 44. Each plug mates with a corresponding control frame. As shown in Figure 7, the control frame includes a cross arm 45 and a longitudinal arm 46, the cross arm is set to the horizontal direction, and the longitudinal arm is set to the vertical direction; the longitudinal arm is provided with a flange, and the upper and lower ends of the flange respectively form an upper positioning Step 461 and lower positioning step 462; the positioning surfaces of the upper positioning step and the lower positioning step are horizontal, and the plug is also provided with a matching positioning surface, and the two positioning surfaces are matched together so that the upper positioning step and the lower positioning step The protruding position and the retracting position of the plug corresponding to the control frame are adapted and positioned respectively.

As shown in Figure 7, the outer end of the cross arm of the control frame is provided with a groove with an opening downward. The downward-opening grooves provided on the outer end are combined into intermittent upper grooves 451 of the elastic pieces, and the two ends of the elastic pieces are clamped between the upper grooves of the elastic pieces and the lower grooves of the elastic pieces, and can slide in the horizontal direction.

As shown in Figure 3, the shrapnel 5 is a thin sheet with elasticity. What this example selects is an integrated shrapnel. The upper part of the shrapnel is provided with a gap in the vertical direction, and the shrapnel is divided into three parts that are separated at the bottom and connected to the top; As shown in 8, the inner end of the selection key is provided with an elastic sheet through hole 61, and is thus sleeved on the middle part of the three parts at the top of the divided elastic sheet.

As shown in Fig. 4 and Fig. 9, the socket assembly of the multi-country converter in this example is provided with 5 spaced protrusions 71 in the horizontal direction, forming 4 spaced spaces, and a control frame is fitted in each spaced space. In this example, 4 control frames of European standard, American standard, British standard and Australian standard are respectively set up from left to right. The width of the inner end of the selection key is adapted to the distance between the adjacent spacing bumps; the upper surface of the inner end of the selection key fits closely with the lower surface of the spacing bumps, and the lower surface of the spacing bumps is provided with hemispherical damping bumps 711 . When the selection key slides horizontally between each control frame, the position where the control frame cannot be selected will produce a damping feel due to the existence of the hemispherical damping bump; only when the selection key slides to the position of the control frame can the selection press be performed , the damping feel disappears.

On both sides of the upper surface of the inner end of the selection key, there are selection key grooves 62 parallel to the elastic direction of the shrapnel, and the gap between the grooves matches the gap between the damping bumps. When the selection key is pressed, the selection key groove will slide along the interval protrusions, which plays a guiding role and helps to improve the feeling when the selection key is pressed.

Two plug guide posts 72 are respectively arranged in the vertical direction on the socket assembly and in the housing, and each plug is provided with a guide post through hole, and the two are socketed together.

The multi-country converter in this example also has a USB component, which can provide USB charging function.

The multi-country converter in this example has a safety tube on the lower cover to provide overload protection.

The multi-country converter in this example, the connection relationship of the plug, the control frame, the shrapnel and the selection key is shown in Figure 5. When the plug is shrunk in the housing, its structure is shown in Figure 10. The shrapnel is in a normal state, and the upper positioning step of the control frame blocks the corresponding position of the plug, so that the plug cannot be pushed and slides out of the plug through hole to realize electrical connection. Assuming that the American standard plug needs to be slid out, you need to first move the selection button to the position corresponding to the control frame of the American standard plug, and then press the selection button inward. As shown in Figure 11, at this time, the middle part of the longitudinal partition of the shrapnel is driven to deform inwardly, the American standard control frame moves to the right, the limit function of the upper positioning step card disappears, and the American standard plug is in a state of free sliding. At this time, push down the operation button of the American standard plug, slide the American standard plug down to the bottom, and then release the pressed selection button. The selection button returns to the original state with the elasticity of the shrapnel, as shown in Figure 12. The lower positioning step of the standard plug control frame clamps the corresponding position of the American standard plug, prevents the American standard plug from retracting, and ensures a safe electrical connection.

Claims (9)

1. a kind of converter with button selection function, including the housing provided with male connector throughbore, housing is interior to be provided with least two kinds of insert Head, the plug can stretch out or retract from the male connector throughbore, and the plug that plug is provided with controller plug expanding-contracting action operates Key, it is characterized in that, each plug is corresponding to be provided with control cage；Control cage is provided with upper positioning step (461) and lower positioning table Rank (462), the stretching position of upper positioning step plug corresponding with the control cage with lower positioning step and punctured bit are adapted to respectively；Institute State and shell fragment (5) is respectively equipped with control cage, housing is provided with selection key (6), and selection key is between the position of corresponding each shell fragment Slidably, and shell fragment corresponding to position is extruded；The shell fragment is flexible thin slice.

2. a kind of converter with button selection function according to claim 1, it is characterized in that, the control cage includes The transverse arm (45) extended to selection key direction, the outboard end of transverse arm are provided with the groove that Open Side Down, and case inside wall is provided with Groove (21) under the shell fragment of opening upwards, the both ends of the shell fragment are connected under groove and shell fragment between groove.

3. a kind of converter with button selection function according to claim 1 or 2, it is characterized in that, each bullet Piece is integral type structure, and the top of integral type shell fragment is provided with the longitudinal breach extended along telescopic plug direction.

4. a kind of converter with button selection function according to claim 3, it is characterized in that, each control cage Transverse arm outboard end on the set groove that Open Side Down, be combined into groove (451) on interrupted shell fragment；Integral type shell fragment is in shell fragment Under upper groove and shell fragment groove it is spacing in slidably.

5. there is the converter of button selection function according to any one described in claim 1 or 2, it is characterized in that, it is described The locating surface of upper positioning step (461) and lower positioning step (462) is the plane perpendicular to telescopic plug direction.

6. a kind of converter with button selection function according to claim 1 or 2, it is characterized in that, in addition to sleeve Holder assembly (7)；Sleeve holder assembly is provided with some interval salient points (71), the outboard end of transverse arm in the position of the outboard end close to transverse arm It is positioned between the salient point of interval.

7. a kind of converter with button selection function according to claim 5, it is characterized in that, the medial extremity of selection key Width be adapted to distance between adjacent interval salient point；The upper surface of the medial extremity of selection key and the lower surface close-fitting of interval salient point Close, the lower surface for being spaced salient point is provided with hemispherical damping salient point (711).

8. a kind of converter with button selection function according to claim 7, it is characterized in that, the medial extremity of selection key Upper surface both sides, be provided with selection key groove (62) along shell fragment elastic deformation direction, groove gap and the gap of damping salient point Adaptation.

9. a kind of converter with button selection function according to claim 6, it is characterized in that, the sleeve holder assembly Some plug guide pillars (72) are provided with parallel to plug glide direction in upper and/or housing, plug is provided with guide pillar through hole；Plug is led Post connects together with guide pillar through hole.