CN210074175U

CN210074175U - Line protection device

Info

Publication number: CN210074175U
Application number: CN201921154841.2U
Authority: CN
Inventors: 杨博谦; 闻博; 牛铸; 范顺杰
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-02-14
Anticipated expiration: 2029-07-22

Abstract

The utility model provides a line protection device. The line protection device includes: a plug-in post comprising a metal post and an insulated post head; the limiting piece comprises an insulating sliding block and a limiting column which are connected through a connecting part; a housing including a wire receiving end and a first opening and a second opening at the wire receiving end, the second opening having a sliding guide portion guiding the insulating slider to slide such that the stopper moves between the fixing position and the releasing position as the insulating slider slides; an electrically conductive contact; the metal column further comprises a limiting column hole, the metal column is inserted into the first opening and reaches a connecting position, and the limiting piece moves to a fixed position, so that the limiting column is inserted into the limiting column hole and fixes the inserting column. The utility model discloses a line protection device can the high-speed joint wire to electric shock risk when reducing the connecting wire.

Description

Line protection device

Technical Field

The utility model relates to a line protection device.

Background

Existing line protection devices, such as circuit breakers or contactors, typically use a crimping screw to secure the wire. In practice, the thread of the pressing screw or the groove shape of the head of the screw may be released and slipped due to long-term use of the pressing screw or use of wrong screwdriver operation. In this case, the screw needs to be replaced or even the line protection device needs to be replaced because the screw cannot be unscrewed.

The existing line protection device also uses a structure of a groove to prevent an electrified body from being touched during operation. With this design, there may be a risk of electric shock due to malfunction or accident.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a line protection device for overcoming the problem that above-mentioned line protection device or other line protection device exist, uses line protection device can make things convenient for connecting wire fast, reduce the maintenance cost, reduce the risk of electrocuting.

In order to achieve the above object, the present invention provides a line protection device, which comprises a plug-in post, wherein the plug-in post comprises a metal post and an insulating post head, the insulating post head is fixed at one end of the metal post and has a wire accommodating space, the wire accommodating space accommodates one end of a wire, and one end of the wire is in conductive contact with the metal post; the limiting piece comprises an insulating sliding block and a limiting column, and the insulating sliding block and the limiting column are connected with each other through a connecting part; a housing including a wire receiving end, the housing further including a first opening and a second opening at the wire receiving end, the second opening having a sliding guide portion that guides the insulating slider to slide such that the stopper moves between the fixing position and the releasing position as the insulating slider slides; a conductive contact disposed within a space surrounded by the housing; the metal column further comprises a limiting column hole, the metal column is inserted into the first opening and reaches a connecting position, the metal column is in conductive contact with the conductive contact piece at the connecting position, and the limiting piece moves to a fixed position from a releasing position, so that the limiting column is inserted into the limiting column hole and fixes the inserting column.

In the above mode, the line protection device connects the external lead to the line protection device through the plug column, and the plug column is fixed through the limiting part, so that the line protection device is connected with the external lead, the connection is convenient and quick, the maintenance is easy, the cost is low, and the safety risk can be reduced.

In another exemplary embodiment of the line protection device, the insulation column head includes a first column head portion and a second column head portion, the insulation column head is fixed at one end of the metal column through the first column head portion, a first connection side of the first column head portion is hinged to a second connection side of the second column head portion, so that the insulation column head can be switched between a closed state and an open state, and when the insulation column head is switched to the closed state, an inner wall of the first column head portion and an inner wall of the second column head portion form the wire accommodating space.

In the above manner, the insulating stud is in an open state, an end of a wire is placed on an inner wall of the first stud portion and in electrically conductive contact with the metal stud, and then the insulating stud is switched to the closed state. In this way, the lead can be easily placed in the lead accommodating space and fixed.

In another exemplary embodiment of the line protecting device, an inner wall of the first post head portion includes a first wire fixing protrusion, and an inner wall of the second post head portion includes a second wire fixing protrusion, and when the second post head portion is switched to the closed state, the first wire fixing protrusion and the second wire fixing protrusion correspond in position to clamp and fix an end of the wire accommodated in the wire accommodating space.

In the above manner, when the second stud portion is switched to the closed state, the first wire fixing protrusion included in the inner wall of the first stud portion corresponds to the second wire fixing protrusion included in the inner wall of the second stud portion in position, so that the wire can be more effectively and more firmly fixed, the wire can be better in conductive connection with the metal post, and accidental falling is prevented.

In another exemplary embodiment of the line protection device, a strip-shaped positioning protrusion is axially disposed on an outer sidewall of the metal post, the first opening has a positioning groove, the positioning protrusion moves in the positioning groove when the metal post is inserted into the first opening, and the metal post is inserted into the connection position, and the stopper moves from the release position to the fixing position, so that the stopper post is inserted into the stopper post hole.

In this way, the orientation of the position-limiting post hole when the metal post is inserted from the first opening can be limited by the cooperation of the positioning protrusion and the positioning groove, and the position-limiting post hole can be just matched with the position-limiting post at a fixed position, so that the position-limiting post can be inserted into the position-limiting post hole.

In another exemplary embodiment of the line protection device, the surface of the insulating slider is provided with at least one anti-slip groove.

In this way, the friction force of the operator moving the insulating slider by hand can be increased, and the wire connection operation can be performed more conveniently.

In another exemplary embodiment of the line protection device, the insulating slider includes a slider body and a push-pull handle connected to the slider body and extending in a direction moving from the securing position to the releasing position.

In the above manner, the insulating slider can be just and easily moved using the push-pull handle to complete the wire connection.

In another exemplary embodiment of the line protection device, the limiting member includes an elastic resetting mechanism, the elastic resetting mechanism is elastically deformed when the limiting member moves to the release position, and the elastic resetting mechanism which is elastically deformed can apply force to the limiting member so that the limiting member moves to the fixed position.

In this way, the limiting member can be always placed in the fixed position without intervention of an external force. When the inserting column needs to be inserted, the limiting piece is moved to the release position only by applying force to the insulating sliding block, the inserting column is inserted, then the force on the insulating sliding block is removed, the limiting piece moves to the fixed position under the action of the elastic resetting mechanism, the fixing of the inserting column is completed, and due to the action of the elastic resetting mechanism, the limiting piece is kept at the fixed position, so that the fixing of the inserting column is kept.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. In the drawings, similar components or features may have the same reference numerals. Wherein the content of the first and second substances,

fig. 1 schematically illustrates a portion of a line protection device according to the present invention located at a wire access end;

fig. 2 schematically shows a plug-in column according to the invention.

Reference numerals

10 inserting column

11 Metal pillar

111 spacing post hole

12 insulating column cap

121 first column head part

122 second stud portion

123 wire accommodating space

20 position limiting part

21 insulating slide block

211 anti-slip groove

22 limiting column

23 connecting part

30 casing

31 first opening

32 second opening

33 lead wire connecting end

40 conductive contact

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thereby implement the subject matter described herein, and are not intended to limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as needed. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with respect to some examples may also be combined in other examples.

As used herein, the term "include" and its variants mean open-ended terms in the sense of "including, but not limited to. The term "based on" means "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first," "second," and the like may refer to different or the same object. Other definitions, whether explicit or implicit, may be included below. The definition of a term is consistent throughout the specification unless the context clearly dictates otherwise.

Fig. 1 schematically illustrates a portion of a line protection device according to the present invention located at a wire access end. As shown in fig. 1, the line protection device includes a plug post 10, a retainer 20, a housing 30, and a conductive contact 40.

As shown in fig. 1, the plug post 10 includes a metal post 11 and an insulated post head 12, and the insulated post head 12 is fixed to one end of the metal post 11.

Fig. 2 schematically shows a plug-in column according to the invention. As shown in fig. 2, the insulated column head 12 has a wire receiving space 123. The wire receiving space 123 receives one end of an external wire and is in conductive contact with the metal post 11. In order to make conductive contact with the metal stud 11, the insulation of a length of wire at the end of the wire in conductive contact with the metal stud 11 needs to be removed. The length of the insulated wire is entirely placed in the wire receiving space 123 so that the wire is in conductive contact with the metal post 11, and at the same time, the portion of the wire exposed outside the wire receiving space 123 has an insulating layer. In this way, the insulating column head 12 can be held by hand for plugging and unplugging the plug column 10, while preventing possible electric shock risks.

The insulating stud 12 and the metal stud 11 can be secured in a number of ways, for example, the metal stud 11 has threads at the end secured to the insulating stud 12, and the insulating stud 12 has threads on the side wall of the conductor receiving space 123 that mate with the aforementioned threads. Thus, the fixing of the metal stud 11 and the insulation post head 12 can be accomplished by screwing one end of the metal stud 11 into the wire receiving space 123, and optionally, the conductive connection of one end of the wire and the metal stud 11 can be fixed at the same time.

Optionally, as shown in fig. 2, in one embodiment of the present invention, the insulation column head 12 includes a first column head portion 121 and a second column head portion 122. The insulating stud 12 is secured to one end of the metal stud 11 by a first stud portion 121. A first connecting side (not shown) of the first stud portion 121 and a corresponding second connecting side (not shown) of the second stud portion 122 are hinged such that the insulating stud 12 can be switched between a closed state and an open state. When the insulation column head 12 is in the open state, the inner wall of the first column head portion 121 and the inner wall of the second column head portion 122 are in the open state. When the insulation post head 12 is switched to the closed state, the inner wall of the first post head portion 121 and the inner wall of the second post head portion 122 enclose a wire receiving space 123.

In the above embodiment, when the insulation post head 12 is in the open state, the end of the wire with the insulation layer removed by a certain length is placed on the inner wall of the first post head portion 121, and the wire is in conductive contact with the metal post 11, and then the insulation post head 12 is switched to the closed state, the inner wall of the first post head portion 121 and the inner wall of the second post head portion 122 surround to form the wire accommodating space 123, and the wire end is accommodated, thereby completing the conductive connection between the plug post 10 and the wire.

Optionally, in one embodiment of the present invention, the inner wall of the first post head portion 121 includes a first wire retention projection (not shown) and the inner wall of the second post head portion 122 includes a second wire retention projection (not shown). When the second column part is switched to the closed state, the first wire fixing protrusion and the second wire fixing protrusion correspond in position. Thus, in the case where the one end of the wire is placed at the inner wall of the first post head portion 121 and the insulation post head 12 is switched to the closed state, the first wire fixing projection and the second wire fixing projection can be engaged with each other to clamp and further fix the one end of the wire placed in the wire accommodating space 123, so that the connection between the jack post 10 and the wire is more stable and reliable.

As shown in fig. 1, the limiting member 20 includes an insulating slider 21 and a limiting post 22, and the insulating slider 21 and the limiting post 22 are connected by a connecting portion 23.

As shown in fig. 1, the housing 30 includes a wire receiving end 33, the housing 30 further includes a first opening 31 and a second opening 32 at the wire receiving end 33, and the second opening 32 has a sliding guide portion (not shown) that guides the insulating slider 21 to slide so that the stopper 20 moves between the fixing position and the releasing position as the insulating slider 21 slides. The slide guide portion may be a slide rail on both sides of the second opening, which is capable of matching with the insulating slider 21 and guiding the sliding of the insulating slider 21.

Housing 30 shown in fig. 1 is the portion of the line protection device at wire access end 33. As shown in fig. 1, the conductive contact 40 is disposed in a space surrounded by the housing 30.

As shown in fig. 1, the metal post 11 further includes a limiting post hole 111, the metal post 11 is inserted into the first opening 31 and reaches a connection position, the metal post 11 is in conductive contact with the conductive contact 40 at the connection position, and the limiting member 20 moves from the release position to the fixing position, so that the limiting post 22 is inserted into the limiting post hole 111 and fixes the inserting post 10. Here, the fixing position of the stopper 20 means that the stopper 20 can fix the insert post 10 by inserting the stopper post 22 into the stopper post hole 111 at the fixing position when the metal post 11 is at the connection position. The stop member 20 is in the release position, and the plug-in post 10 can be pulled out from the first opening 31.

After the inserting-connecting column 10 is inserted into the first opening 31 and the metal column 11 reaches the connection position, the inserting-connecting column 10 needs to be rotated to adjust the orientation of the limiting column hole 111, so that the limiting column 22 can be inserted into the limiting column hole 111. In order to allow the orientation of the stopper rod hole 111 to be positioned at one step when inserted, for example, the metal rod 11 having an oval or rectangular cross section may be used, and the first opening 31 may have a corresponding cross-sectional shape. In this way, the orientation of the stopper post hole 111 needs to be adjusted in advance while the orientation of the metal post 11 is adjusted so that the metal post 11 can be inserted into the stopper post hole 111 without adjusting the orientation again after reaching the connection position in order to insert the metal post 11 into the first opening 31.

Optionally, in an embodiment of the present invention, a strip-shaped positioning protrusion (not shown) is axially disposed on an outer sidewall of the metal column 11, the first opening 31 correspondingly has a positioning groove (not shown), the positioning protrusion moves in the positioning groove during the insertion of the metal column 11 into the first opening 31, and the positioning protrusion and the positioning groove cooperate with each other to define the orientation of the limiting column hole 111. The metal post 11 is inserted to the connection position, and the stopper 20 is moved from the release position to the fixing position, so that the stopper post 22 is inserted into the stopper post hole 111. In the above embodiment, the orientations of the positioning protrusion, the positioning groove, and the position-limiting post hole 111 are matched in advance, so that the position-limiting post 22 can be inserted into the position-limiting post hole 111 after the metal post 11 is at the connection position.

As shown in fig. 1, in order to slide the insulating slider 21, an operator needs to apply a force to the insulating slider 21. Generally, the surface of the insulating slider 21 is the position most easily touched and applied by the operator. To increase the friction during the application of force, optionally, as shown in fig. 1, in an embodiment of the present invention, at least one anti-slip groove 211 is included on the surface of the insulating slider 21. Thus, when an operator pushes the insulating slider 21 by pressing a finger on the surface of the insulating slider, friction force can be increased due to the anti-slip groove 211, so that the operator can more easily apply force to the insulating slider 21 to slide the insulating slider. Of course, other options are possible for increasing the friction, for example, raised cleats or granular protrusions may be provided on the surface, and the same may be achieved.

Optionally, in an embodiment of the present invention, the insulating slider 21 includes a slider body and a push-pull handle (not shown), which is connected to the slider body and extends in a direction moving from the fixing position to the release position. The above embodiment is another way to operate the insulating slider 21 to slide, and an operator can directly pull or push the push-pull handle to operate the insulating slider 21 to slide.

In the working process of the line protection device, the metal column 11 is at the connection position, the limiting member 20 is at the fixed position, and the limiting column 22 goes in and out of the limiting column hole 111 and fixes the inserting column 10. In the working process, in order to keep the limiting member 20 at the fixed position, optionally, in an embodiment of the present invention, the limiting member 20 includes an elastic resetting mechanism (not shown), the elastic resetting mechanism generates elastic deformation when the limiting member 20 moves to the release position, and the elastic resetting mechanism which generates elastic deformation applies force to the limiting member 20 so that the limiting member 20 can move to the fixed position. Likewise, in the case that the insulating slider 21 is pushed without external force operation, the position-limiting member 20 will be kept at a fixed position due to the elastic restoring mechanism, and functions to fix the plugging column 10. The elastic reset mechanism can have multiple options, such as a spring, an elastic spring plate and the like.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims

1. Line protection device, its characterized in that, line protection device includes:

a jack post (10), said jack post (10) comprising a metal post (11) and an insulated post head (12), said insulated post head (12) being secured to one end of said metal post (11) and having a wire receiving space (123), said wire receiving space (123) receiving one end of a wire, and said one end of the wire being in conductive contact with said metal post (11);

the limiting piece (20) comprises an insulating sliding block (21) and a limiting column (22), and the insulating sliding block (21) and the limiting column (22) are connected with each other through a connecting part (23);

a housing (30), said housing (30) including a wire access end (33), said housing (30) further including a first opening (31) and a second opening (32) at said wire access end (33), said second opening (32) having a sliding guide portion, said sliding guide portion guiding said insulating slider (21) to slide such that said stopper (20) moves between a fixing position and a releasing position in accordance with the sliding of said insulating slider (21);

a conductive contact (40), said conductive contact (40) being disposed within a space surrounded by said housing (30);

the metal column (11) further comprises a limiting column hole (111), the metal column (11) is inserted into the first opening (31) and reaches a connection position, the metal column (11) is in conductive contact with the conductive contact piece (40) at the connection position, and the limiting piece (20) moves from a release position to a fixed position, so that the limiting column (22) is inserted into the limiting column hole (111) and fixes the plug column (10).

2. Line protection device according to claim 1, characterized in that the insulation stud (12) comprises a first stud part (121) and a second stud part (122), the insulation stud (12) being fixed at one end of the metal stud (11) by means of the first stud part (121), a first connection side of the first stud part (121) and a corresponding second connection side of the second stud part (122) being hinged such that the insulation stud (12) is switched between a closed state and an open state, the insulation stud (12) being switched to the closed state such that the inner walls of the first stud part (121) and the inner walls of the second stud part (122) form the wire receiving space (123).

3. The line protection device according to claim 2, wherein an inner wall of the first post head portion (121) includes a first wire fixing protrusion, and an inner wall of the second post head portion (122) includes a second wire fixing protrusion, and when the second post head portion (122) is switched to the closed state, the first wire fixing protrusion and the second wire fixing protrusion correspond in position to each other, and clamp and fix the one end of the wire received in the wire receiving space (123).

4. The line protection device according to claim 1, wherein the outer sidewall of the metal post (11) is provided with a strip-shaped positioning protrusion along the axial direction, the first opening (31) has a positioning groove, the positioning protrusion moves in the positioning groove during the insertion of the metal post (11) into the first opening (31), and the metal post (11) is inserted into the connection position, and the stopper (20) moves from the release position to the fixing position, so that the stopper post (22) is inserted into the stopper post hole (111).

5. Line protection device according to claim 1, characterized in that the surface of the insulating slider (21) comprises at least one anti-slip groove (211).

6. The line protection device according to claim 1, wherein the insulating slider (21) comprises a slider body and a push-pull handle connected to the slider body and extending in a direction moving from the securing position to the release position.

7. The line protection device according to claim 1, wherein the limiting member (20) comprises an elastic restoring mechanism, the elastic restoring mechanism is elastically deformed during the process of moving the limiting member (20) to the releasing position, and the elastically deformed elastic restoring mechanism can apply a force to the limiting member (20) so as to move the limiting member (20) to the fixing position.