An electrical tap unit with a locking device

Abstract

The present invention relates to the field of electrical devices, and particularly to a tap-off unit with a locking structure. A tap-off unit with a locking structure, the tap-off unit includes an upper socket and a lower base body, the lower base body is used for inserting into a power rail to obtain power, and the tap-off unit further includes a control member disposed outside the upper socket and axially movable along the socket between an initial position and a terminal position; and a locking device is provided inside the tap-off unit, the locking device responds to the movement of the control member, locks the tap-off unit when the control member is in the terminal position, and unlocks when the control member is in the initial position. The tap-off unit provided by the present invention has a locking function, prevents accidental touch in the power usage environment, improves the safety of power usage, and can complete the locking function through one step, with convenient operation.

Description

Technical Field

[0001] The present invention relates to the field of electrical devices, and particularly to a power tapping unit. Background Art

[0002] In the prior art, the position of the socket holes is relatively fixed in the traditional decoration wiring form. When it is necessary to connect electrical appliances at a relatively long distance, a power strip must be used to lead out multiple sockets from the wall socket to connect with external electrical components. The power cord of the power strip is very messy and has potential safety hazards. Installing more socket holes at common positions will make the wiring inside the wall complex, and it is very difficult to accurately predict the appropriate position for installing socket holes during decoration wiring.

[0003] Therefore, a power rail and a supporting power tapping unit have emerged as the times require. The power rail is electrically connected to the socket already installed on the wall through a long conductor arranged in its cavity, and can be extended along the wall to a suitable power taking point. The power tapping unit can be inserted into the cavity of the power rail at any position and rotated to connect the circuit, realizing electrical connection, and is very flexible to use.

[0004] In order to provide a better user experience for consumers, it is necessary to add a locking function when the power tapping unit is inserted into the power rail to take power, so that the power tapping unit is locked at this position and cannot rotate during normal power-on use. Before the power tapping unit needs to be pulled out, the locking must be released first before it can be pulled out normally. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a power tapping unit with a locking device, so that the power tapping unit is locked at this position and cannot rotate during normal power-on use. Before the power tapping unit needs to be pulled out, the locking must be released first before it can be pulled out normally.

[0006] The specific technical solution is as follows:

[0007] A power tapping unit with a locking device, the power tapping unit includes an upper socket 2 and a lower base 3. The lower base 3 is used to insert into the power rail to take power. The lower base 3 includes a base cover and a base; it is characterized in that:

[0008] The power tapping unit further includes a control member 1 arranged outside the upper socket and axially movable along the socket between an initial position and an end position; and a locking device is arranged inside the power tapping unit. The locking device responds to the movement of the control member 1, locks the power tapping unit when the control member 1 is at the end position, and unlocks when the control member is at the initial position.

[0009] The locking device includes a first limiting post 8 and a second limiting post 9 arranged on the base cover, two arc-shaped hollow-outs 7 arranged on the base, a first limiting stop 4 and a second limiting stop 5 arranged on the inner wall of the control member 1; the control member 1 is installed on the base, and the installation positions of the first limiting stop 4 and the second limiting stop 5 correspond to the two arc-shaped hollow-outs 7 on the base. The first limiting post 8 and the second limiting post 9 on the base cover extend out from the arc-shaped hollow-outs 7 on the base and are in an inverted "L" shape. The positions of the protruding ends of the column bodies of the first limiting post 8 and the second limiting post 9 correspond to the arc surfaces of the first limiting stop 4 and the second limiting stop 5 on the inner wall of the control member 1 and are located above the arc surfaces. The first limiting post 8 and the second limiting post 9 can be rotationally limited along the arc surfaces of the first limiting stop 4 and the second limiting stop 5. When rotated to the end position, the first limiting post 8 and the second limiting post 9 are disengaged from the arc surfaces of the first limiting stop 4 and the second limiting stop 5, and the control member 1 can perform axial movement at this position. After the control member 1 axially moves to the end position, the protruding ends of the first limiting post 8 and the second limiting post 9 are mutually resisted against the sides of the first limiting stop 4 and the second limiting stop 5 to limit rotation.

[0010] The electric tap-changing unit further includes a limiting structure for limiting the axial movement stroke of the control member 1.

[0011] Further, the limiting structure at least includes two symmetrically arranged first swing arms 11, and the ends of the two first swing arms 11 are rotatably connected to the first swing arm end clamping grooves 113 on the inner wall of the control member; on the base of the lower base body 3, there is a first swing arm height-limiting block 112 that cooperates with the other ends of the two first swing arms 11.

[0012] Further, the limiting structure includes at least two symmetrically arranged second swing arms 12. One ends of the two second swing arms 12 are rotatably connected to the second swing arm clamping grooves 122 on the base of the lower base body 3, and the inner wall of the control member 1 is provided with a cooperating limiting sliding groove 123 at the positions corresponding to the ends of the two second swing arms 12.

[0013] Preferably, the positions of the two first swing arms 11 and the second swing arms 12 are arranged in a cross.

[0014] Preferably, the two first swing arms 11 are integrally formed.

[0015] Preferably, the two second swing arms 12 are integrally formed.

[0016] Further, a clamping protrusion 125 is provided between the integrally formed two first swing arms, and a convex block 124 corresponding to the clamping protrusion is provided on the base of the lower base body. The convex block 124 and the clamping protrusion 125 are in an interference fit.

[0017] The beneficial effects of the present invention are:

[0018] The electrical tapping unit provided by the present invention adds a locking function on the basis of the function of taking power after the electrical tapping unit is inserted into the power rail and rotated. Through a single movement of the control member, the electrical tapping unit can be position-locked during normal use, making the use of the electrical tapping unit safer, more stable, and smoother in operation. Moreover, the setting of the control member provides the possibility for adding more additional functions to the electrical tapping unit in the future. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the disclosed embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments disclosed by the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 Is a perspective view of the electrical tapping unit;

[0021] Figure 2 Is a perspective view of the control member of this preferred embodiment;

[0022] Figure 3 Is a perspective view of the assembly of the base and the base cover of this preferred embodiment;

[0023] Figure 4 Is Figure 3 A perspective view of the base cover of the illustrated embodiment;

[0024] Figure 5 Is a top view of the assembly of the control member and the base of this preferred embodiment;

[0025] Figure 6 Is an exploded view of the structure of an electrical tapping unit with a locking device according to the present invention.

[0026] Description of the reference numerals:

[0027] 1: Control member; 2: Upper socket; 3: Lower base; 11: First swinging arm; 111: End of the first swinging arm; 112: Height-limiting block of the first swinging arm; 113: Card slot at the end of the first swinging arm; 12: Second swinging arm; 121: End of the second swinging arm; 122: Card slot of the second swinging arm; 123: Limiting sliding groove; 124, Protrusion; 125, Carding protrusion; 4: First limiting block; 5: Second limiting block; 7: Arc-shaped hollow; 8: First limiting post; 9: Second limiting post. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the technical solutions and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the drawings.

[0029] Best Embodiment:

[0030] Refer to Figure 1 , in this embodiment, a control member 1 is provided outside the upper socket 2 of the electrical tap-off unit. The shape of the control member 1 does not necessarily have to be a cylindrical shape as shown in Figure 2 , and it can also be other shapes such as a square tube shape. The control member 1 can axially move back and forth between an initial position closest to the lower base 3 and a terminal position farthest from the lower base 3. By moving the control member 1, the locking function can be achieved. When the electrical tap-off unit is inserted into the power rail, the control member 1 is in the initial position. At this time, the electrical tap-off unit can be rotated to a position where it is clamped in the cavity of the power rail, and then the control member 1 can be axially moved to the terminal position. At this time, the electrical tap-off unit is locked in the inserted position and cannot be rotated; when the control member 1 is axially moved back to the initial position again, the electrical tap-off unit can be rotated to disengage it from the power rail.

[0031] With reference to Figure 3 , Figure 4 , Figure 5 , Figure 6 , the lower base 3 includes a base and a base cover. A rotating arm is provided at the lower part of the base for inserting into the power rail to draw power, and there is an electrical connection between the connector on the base and the rotating arm. The locking device in the electrical tap-off unit mainly includes a first limiting stop 4 and a second limiting stop 5 on the inner wall of the control member 1, two arc-shaped cutouts 7 on the base, and the first limiting stop 4 and the second limiting stop 5 on the base cover.

[0032] As shown in Figure 2 , the first limiting stop 4 and the second limiting stop 5 are two arc-shaped stops along the circumference of the inner wall of the control member 1. With reference to Figure 3 , the base is respectively provided with two arc-shaped cutouts 7 corresponding to the first limiting stop 4 and the second limiting stop 5. The control member 1 is installed on the base, and the installation positions of the first limiting stop 4 and the second limiting stop 5 correspond to the two arc-shaped cutouts 7 on the base. With reference to Figure 4, the first limiting post 8 and the second limiting post 9 are symmetrically arranged on the base cover. The first limiting post 8 and the second limiting post 9 are inverted "L" column bodies. When the base cover is assembled to the base, the first limiting post 8 and the second limiting post 9 respectively pass through the two arc-shaped hollowings 7, and the passing distance should ensure that the end extensions of the column bodies of the first limiting post 8 and the second limiting post 9 press on the arc surfaces of the first limiting block 4 and the second limiting block 5 installed on the base and can be rotationally limited along the arc surfaces. The arc lengths of the first limiting block 4 and the second limiting block 5 should be appropriately designed. The starting positions of the rotation of the first limiting post 8 and the second limiting post 9 correspond to the initial position of the electrical tap-changing unit. When in the final position of rotation, the electrical tap-changing unit is in the position of being clamped in the power rail cavity, and at the final position of rotation, the first limiting post 8 and the second limiting post 9 can just disengage from the arc surfaces of the first limiting block 4 and the second limiting block 5. The control member 1 can axially move in this position. The first limiting block 4 and the second limiting block 5 move upward integrally with the control member 1. After the control member 1 axially moves to the end position, the end extensions of the first limiting post 8 and the second limiting post 9 resist against the sides of the first limiting block 4 and the second limiting block 5 to limit rotation.

[0033] In order to limit the axial movement stroke of the control member 1 outside the upper socket 2 of the electrical tap-changing unit. In this embodiment, a limiting structure is provided inside the electrical tap-changing unit.

[0034] Refer to in combination Figure 2 、 Figure 3 、 Figure 5 、 Figure 6; The limiting structure of this embodiment is as follows: Two integrally formed first swing arms 11 and two split second swing arms 12 are provided in the base. At the positions corresponding to the ends of the two first swing arms 11 on the inner wall of the control member 1, there are two first swing arm end clamping grooves 113 for the first swing arm ends 111 to be rotatably connected thereto; the other end of the first swing arm 11 cooperates with the first swing arm height limiting block 112 in the base. One end of the second swing arm 12 is rotatably connected to the second swing arm clamping groove 122 in the base, and the two second swing arm ends 121 cooperate with the two limiting sliding grooves 123 on the inner wall of the control member 1. When the control member 1 axially moves from the initial position to the end position, the first swing arm end 111 moves together with the control member 1 because it is connected to the inner wall of the control member 1. The other end of the first swing arm 11 is limited by the first swing arm height limiting block 112 connected to the base, thereby controlling the movable stroke of the control member 1; as the control member 1 moves, the second swing arm end 121 slides in the limiting sliding groove 123 on the inner wall of the control member 1, but the slidable length is limited by the limiting sliding groove 123, thereby also controlling the movable stroke of the control member 1. The two first swing arms 11 and the two second swing arms 12 are arranged in a cross shape, so that the entire limiting structure is evenly stressed and relatively stable. In this embodiment, two integrally formed first swing arms 11 are adopted, and a clamping protrusion 125 is provided in the middle thereof. There is an interference fit between the clamping protrusion 125 and the convex block 124 on the base, so that when the control member 1 moves to the end position, the first swing arm 11 has a certain supporting force on it, and a certain force needs to be applied before the control member 1 can be moved to the initial position to avoid accidental touch.

[0035] The working process of this embodiment is as follows:

[0036] When the electrical tapping unit is in the initial position, the extensions of the first limit post 8 and the second limit post 9 on the base cover are located above the arc surfaces of the first limit stop 4 and the second limit stop 5, and the control member 1 can rotate, but the extensions of the first limit post 8 and the second limit post 9 press the first limit stop 4 and the second limit stop 5 on the control body 1, and the control member 1 cannot move axially. When the electric tapping unit is inserted into the power rail to take power, the electric tapping unit is rotated until the rotating arm at the bottom of its base is clamped in the power rail cavity, and the first limit column 8 and the second limit column 9 rotate to the final position, and the first limit column 8 and the second limit column 9 can just break away from the arc surface of the first limit block 4 and the second limit block 5, and the control member 1 can move axially at this position, and the first limit block 4 and the second limit block 5 move upward as a whole; when the control member 1 moves axially to the end position, the arc surface side of the first limit block 4 and the second limit block 5 is located at the side of the first limit block 8 and the second limit block 9 protruding body, and they resist each other and cannot rotate, and the electric tapping unit is locked at the end position. After the control member moves to the initial position again, the first limit column 8 and the second limit column 9 protruding body break away from the obstruction of the first limit block 4 and the second limit block 5 side, and the electric tapping unit returns to the rotatable state. At this time, the electric tapping unit can be rotated to be pulled out of the power rail.

[0037] The above description is only for the purpose of facilitating those skilled in the art to understand the technical solution of the present disclosure and is not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An electrical tapping unit with a locking device, the electrical tapping unit comprising an upper socket (2) and a lower base (3), the lower base (3) being used for inserting into a power rail to draw electricity, the lower base (3) comprising a base cover and a base; characterized in that: The electrical tapping unit further comprises a control member (1) arranged outside the upper socket (2) and capable of axially moving between an initial position and an end position; and a locking device is arranged inside the electrical tapping unit, the locking device responding to the movement of the control member (1) to lock the electrical tapping unit when the control member (1) is at the end position and unlocking the control member when the control member is at the initial position; The locking device comprises a first limiting column (8) and a second limiting column (9) arranged on the base cover, two arc-shaped hollows (7) arranged on the base, and a first limiting stopper (4) and a second limiting stopper (5) arranged on the inner wall of the control member (1); the control member (1) is installed on the base, the installation positions of the first limiting stopper (4) and the second limiting stopper (5) correspond to the two arc-shaped hollows (7) of the base, the first limiting column (8) and the second limiting column (9) on the base cover extend out from the arc-shaped hollows (7) on the base and are in an inverted "L" shape, and the positions of the protruding bodies of the first limiting column (8) and the second limiting column (9) correspond to the positions of the control member (1) and the inner wall of the control member (1) respectively. (1) The arc surfaces of the first limit stop (4) and the second limit stop (5) of the inner wall correspond to each other and are located at the upper part of the arc surface; the first limit post (8) and the second limit post (9) can be rotated along the arc surface of the first limit stop (4) and the second limit stop (5); when the first limit post (8) and the second limit post (9) rotate to the final position, they are separated from the arc surface of the first limit stop (4) and the second limit stop (5); the control member (1) can move axially at this position; after the control member (1) moves axially to the final position, the end extensions of the first limit post (8) and the second limit post (9) and the side surfaces of the first limit stop (4) and the second limit stop (5) resist each other and limit the rotation.

2. The electrical tap unit with a locking device according to claim 1, characterized in that: The electrical tapping unit also includes a limiting structure for limiting the axial movement stroke of the control member (1).

3. The electrical tap unit with a locking device according to claim 2, characterized in that: The limiting structure comprises at least two symmetrically arranged first rocking arms (11), the ends of the two first rocking arms (11) being rotatably connected to first rocking arm end clamping grooves (113) on the inner wall of the control member (1); and a first rocking arm height limiting block (112) matching with the other ends of the two first rocking arms (11) is provided on the base of the lower base body (3).

4. The electrical tap unit with a locking device according to claim 2, characterized in that: The limiting structure comprises at least two symmetrically arranged second rocking arms (12), one end of the two second rocking arms (12) being rotatably connected to a second rocking arm clamping groove (122) of the base of the lower base (3), and the inner wall of the control member (1) is provided with matching limiting sliding grooves (123) at positions corresponding to the ends of the two second rocking arms (12).

5. The electric tap-changing unit with a locking device according to claim 3, characterized in that: The limiting structure further includes at least two symmetrically arranged second swing arms (12). One ends of the two second swing arms (12) are rotatably connected to a second swing arm clamping groove (122) at the base of the lower base body (3). At positions corresponding to the ends (121) of the two second swing arms on the inner wall of the control member (1), there are provided matching limiting sliding grooves (123).

6. The electrical tap unit with a locking device according to claim 5, characterized in that: The positions of the two first swing arms (11) and the second swing arms (12) are arranged in a cross shape.

7. An electrical tap-off unit with a locking device according to claim 3 or 5 or 6, characterized in that: The two first swing arms (11) are integrally formed.

8. An on-load tap-changer unit with a locking device according to claim 4 or 5 or 6, characterized in that: The two second swing arms (12) are integrally formed.

9. The electrical tap unit with a locking device according to claim 7, characterized in that: A clamping protrusion (125) is provided between the integrally formed two first swing arms. A convex block (124) corresponding to the clamping protrusion is provided on the lower base body base. An interference fit is provided between the convex block (124) and the clamping protrusion (125).

Images