Flexible plug-in structure for bus power tapping and busbar plug-in box

Abstract

The invention relates to the technical field of busbar flexible plugging, and discloses a flexible plugging structure for busbar power tapping and a busbar plugging box. The flexible plugging structure comprises a plugging seat, and the plugging seat comprises a limiting slide block and a pin plate disposed in the limiting slide block. A mounting hole penetrating through a body of the limiting sliding block is formed in the limiting sliding block, the pin plate penetrates through and axially rotates in the mounting hole, the two ends of the pin plate extend out of the mounting hole, and the width of the pin plate is smaller than that of the mounting hole; according to the invention, through the flexible structural design, dynamic angle compensation and displacement deviation compensation are realized in the plugging matching process of the pin plate and the bus plugging pile head, so that reliable plugging of the plugging box can be realized, and the power utilization safety of a user is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of busbar flexible plug-in connection, and in particular to a flexible plug-in structure and a busbar plug-in box for busbar power tapping. Background Art

[0002] The biggest risk point of busbar products is at the connection and branching of the busbar, that is, the connection of the connector and the plug-in part of the plug-in box. These places are more likely to cause heat due to poor contact of the conductor, which in turn causes discharge caused by insulation failure or even short circuit failure, accompanied by electric shock and fire accidents. These accidents often cause great troubles and losses to people's production and life.

[0003] The production and assembly of plug-in boxes and busbars with sockets are inevitably subject to manufacturing and assembly errors due to various factors, which may cause the busbar pins and the plug-in posts to be not in a straight line, with angle or displacement deviations. Once these deviations exist, the pins and the plug-in posts will become in single-sided or partial contact, with the other side not in contact, insufficient contact stress or virtual connection, and there will be a large plug-in stress, which may cause the pins to deform, damage or plug-in failure, and thus lead to plug-in failure.

[0004] The tapping technology of busbars is so important that domestic and international busbar manufacturers have invested a lot of manpower and material resources in developing new technologies for improvement. At present, the tapping technologies of busbar products on the market mainly include plug-in, crimping and sliding contact, but no technology can achieve the following functions: when there is displacement and / or angle deviation between the plug pin and the plug head, the plug box can still reliably and safely tap the power.

[0005] Therefore, technical improvements are made to address the defects of existing busbar products to achieve reliable plugging of plug-in boxes and ensure safe electricity use for users. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In view of the above problems existing in the existing plug-in structure for busbar power tapping, the present invention is proposed.

[0008] Therefore, the object of the present invention is to provide a flexible plug-in structure for busbar power tapping, which aims to solve the problem of how to dynamically compensate for angle and displacement deviations during busbar plug-in.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: a flexible plug-in structure for busbar power tapping, the flexible plug-in structure comprising a plug socket, the plug socket comprising a limit slider and a pin plate arranged in the limit slider; the limit slider is provided with a mounting hole passing through its body, the pin plate passes through and rotates axially in the mounting hole, and its two ends extend outside the mounting hole, and the width of the pin plate is smaller than the width of the mounting hole.

[0010] As a preferred solution of the flexible plug-in structure for busbar power tapping described in the present invention, the plug socket also includes an elastic member, and the elastic member is arranged at the connection between the pin plate and the mounting hole.

[0011] As a preferred solution of the flexible plug-in structure for busbar power tapping described in the present invention, symmetrical arc grooves are provided in the axial side walls of the mounting hole, and the elastic members are distributed on both sides of the arc grooves.

[0012] As a preferred solution of the flexible plug-in structure for busbar power tapping described in the present invention, wherein: a protrusion protruding from the surface is provided on the side wall of the plate body of the pin plate, and a matching portion is provided on the side wall of the protrusion; the protrusion is limitedly located in the arc groove and can prevent the pin plate from falling off when it is deflected in the mounting hole; the matching portion can contact the elastic member to keep the pin plate in an initial state.

[0013] As a preferred solution of the flexible plug-in structure for busbar power tapping described in the present invention, a shaft rod is arranged in the installation hole, and the pin plate is rotatably connected to the shaft rod through a connecting hole provided in the side wall.

[0014] As a preferred solution of the flexible plug-in structure for busbar power tapping described in the present invention, the elastic member is sleeved on the shaft and / or symmetrically distributed on both sides of the mounting hole.

[0015] As a preferred solution of the flexible plug-in structure for busbar power tapping described in the present invention, the socket further includes an outer shell and a cover plate, a mounting groove is provided in the side wall of the outer shell, and second elastic members are provided on both sides of the groove cavity of the mounting groove; the cover plate is provided at the notch of the mounting groove, and a through hole is provided in the side wall of the plate body, the through hole is aligned with and communicated with the mounting hole, and the opening thereof is not smaller than the opening of the mounting hole.

[0016] As a preferred solution of the flexible plug-in structure for busbar power tapping described in the present invention, wherein: the groove cavity length of the mounting groove is greater than the length of the limiting slider, the limiting slider is slidably arranged in the mounting groove, and the end of the second elastic member away from the side wall of the mounting groove is connected to the side wall of the limiting slider.

[0017] As a preferred solution of the flexible plug-in structure for busbar power tapping described in the present invention, one end of the pin board is symmetrically provided with plug-in copper sheets, and the busbar plug-in pile head can be plugged in between the plug-in copper sheets and contact each other.

[0018] Another object of the present invention is to provide a busbar plug-in box, wherein the above-mentioned flexible plug-in structure is installed in an existing busbar plug-in box to solve the problem of dynamic compensation angle and displacement deviation during busbar plug-in.

[0019] To solve the above technical problems, the present invention provides the following technical solutions: a busbar plug-in box, which has the above-mentioned flexible plug-in structure for busbar power tapping installed at the connecting end of its box body, and is plug-connected to the copper sheet at the end of the busbar.

[0020] Beneficial effects of the present invention:

[0021] The flexible structural design of the present invention enables the pin plate to achieve dynamic angle compensation and displacement deviation compensation during the plugging and matching process with the busbar plugging pile head, thereby achieving reliable plugging of the plug-in box and ensuring the safety of customers' electricity use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0023] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a limit slider and a pin plate in a flexible plug-in structure for busbar power tapping.

[0024] Figure 2 It is a schematic plan view of a first embodiment of the flexible plug-in structure for busbar power tapping of the present invention.

[0025] Figure 3 It is a schematic plan view of a second embodiment of the flexible plug-in structure for busbar power tapping of the present invention.

[0026] Figure 4It is a schematic plan view of a third embodiment of the flexible plug-in structure for busbar power tapping of the present invention.

[0027] Figure 5 It is a schematic plan view of a fourth embodiment of the flexible plug-in structure for busbar power tapping of the present invention.

[0028] Figure 6 It is a schematic plan view of a fifth embodiment of the flexible plug-in structure for busbar power tapping of the present invention.

[0029] Figure 7 It is a schematic diagram of the overall exploded structure of the flexible plug-in structure for busbar power tapping of the present invention.

[0030] Figure 8 The figure is a schematic diagram of the overall combined structure of the flexible plug-in structure for busbar power tapping of the present invention.

[0031] Fig. 9 It is a schematic diagram of the overall cross-sectional plan structure of the flexible plug-in structure for busbar power tapping of the present invention.

[0032] Fig.10 It is a schematic diagram of the overall cross-section and local structure of the flexible plug-in structure for busbar power tapping of the present invention. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0037] Example 1

[0038] Reference Figures 1 to 3 , which is the first embodiment of the present invention. Aiming at the risk points existing in existing bus products, the present invention proposes targeted solutions, specifically a flexible plug-in structure for bus power tapping, the flexible plug-in structure includes a plug-in socket 100 and a bus plug-in post 200, wherein the plug-in socket 100 is the main part of the plug-in box structure installed in the power cabinet or the bus circuit, specifically, the plug-in socket 100 includes a limit slider 101 and a pin plate 102 arranged in the limit slider 101; that is, the pin plate 102 is assembled in the limit slider 101 and can move with the limit slider 101.

[0039] Furthermore, a mounting hole 101a is provided in the limiting slider 101 and passes through the body thereof. The pin plate 102 passes through and rotates axially in the mounting hole 101a, with both ends extending outside the mounting hole 101a, and the width of the pin plate 102 is smaller than the width of the mounting hole 101a.

[0040] Specifically, the mounting hole 101a provided in the limit slider 101 is used to limit the plug board 102, the middle part of the pin board 102 is limited in the mounting hole 101a, and axial deflection is generated at the position limited in the mounting hole 101a, and the two ends of the pin board 102 in the length direction extend on both sides of the limit slider 101, and in order to enable the deflection to proceed normally and limit the angle range of the deflection, the width of the pin board 102 must be smaller than the width of the mounting hole 101a.

[0041] Furthermore, through the above-mentioned structural limitation, only the pin plate 102 can be deflected in the mounting hole 101a, but the state of the pin plate 102 cannot be constrained. For this reason, an elastic member 103 is provided at the connection between the mounting hole 101a and the pin plate 102.

[0042] The elastic member is specifically defined in such a manner that a symmetrical arc groove 101a-1 is opened in the axial side wall of the mounting hole 101a, and the elastic member 103 is distributed on one side or both sides of the arc groove 101a-1. In this manner, the elastic member 103 is preferably a leaf spring 103a and a screw 103b for fixing the leaf spring 103a; and the leaf spring 103a is arranged in such a manner that one end is fixed in the mounting area A arranged on both sides of the mounting hole 101a, and the other end extends to the groove surface of the arc groove 101a-1.

[0043] Correspondingly, a protrusion 102a protruding from the surface is provided on the side wall of the plate body of the pin plate 102, and a matching portion 102b is provided on the side wall of the protrusion 102a; in this embodiment, the protrusion 102a is an arc convex surface adapted to the arc groove 101a-1, and the matching portion 102b is the slope P of the side wall of the end of the protrusion 102a.

[0044] Furthermore, the protrusion 102a is limited in the arc groove 101a-1 by the convex surface of the edge, forming an axial connection, which can prevent the pin plate 102 from falling off when it deflects in the mounting hole 101a; the slope surface P contacts the free end surface of the leaf spring 103a, thereby maintaining the pin plate 102 in the initial state.

[0045] It should be noted that, in this embodiment, the leaf springs 103a are symmetrically arranged and distributed on both sides of the plate body of the pin plate 102, so as to limit the deflection of the pin plate 102 in the two directions; further, the leaf springs 103a on each side can be symmetrically arranged into two groups, respectively at the two ends of each protrusion 102a, so as to improve the elastic restoring force provided by the leaf springs 103a.

[0046] Example 2

[0047] Reference Figure 4 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the elastic member 103 is distributed on both sides of the arc groove 101b, which can be specifically set as a spring 103c or a disc spring, etc., and is set in the inner groove N set in the arc groove 101a-1; and the side wall of the protrusion 102a is provided with a matching portion 102b, which is an extension plate B protruding from the side wall of the protrusion 102a, extending from the end of the extension plate B away from the protrusion 102a into the inner groove N, and the two side plate surfaces thereof are respectively in contact with the end of a spring or a disc spring. That is, the springs or disc springs on both sides of the extension plate B provide the deflection restoring force of the pin plate 102.

[0048] The remaining structures are the same as those of Example 1 and will not be described again here.

[0049] Example 3

[0050] Reference Figure 5 , which is the third embodiment of the present invention, and this embodiment is different from the first and second embodiments in that: the elastic member 103 is distributed on both sides of the arc groove 101b, which can be specifically set as a spring or a disc spring, etc., and is installed in the mounting hole 101a, with one end contacting the side wall of the mounting hole 101a and the other end contacting the side wall of the plate body of the pin plate 102. That is, the deflection restoring force of the pin plate 102 is provided by the upper and lower side springs or disc springs in the extending direction of the mounting hole 101a.

[0051] The remaining structures are the same as those of Example 1 or Example 2.

[0052] Example 4

[0053] Reference Figure 6 , which is the fourth embodiment of the present invention. This embodiment is different from the previous three embodiments in that the socket 100 also includes an elastic member 103, and the elastic member 103 is arranged at the connection between the pin plate 102 and the mounting hole 101a.

[0054] A shaft rod 101a - 2 is disposed in the mounting hole 101a , and the pin plate 102 is rotatably connected to the shaft rod 101a - 2 through a connecting hole 102c opened in the side wall.

[0055] The elastic member 103 is sleeved on the shaft 101a - 2 and / or symmetrically distributed on both sides of the mounting hole 101a .

[0056] Specifically, in this embodiment, the arc groove 101a-1 is no longer required to cooperate with the pin plate 102 to form an axial rotation. Instead, a shaft rod 101a-2 that passes through the side wall of the pin plate 102 is directly set in the mounting hole 101a, so that the plug plate 102 can deflect around the shaft rod 101a-2.

[0057] Furthermore, in order to maintain the deflection recovery of the pin plate 102 in this structure, the elastic member 103 may be provided with a torsion spring H, which is mounted on the shaft 101a-2 to provide a deflection recovery force for the pin plate 102; similarly, the elastic member 103 may also be provided as a spring or a disc spring, which is symmetrically arranged on both sides of the mounting hole 101a.

[0058] Example 5

[0059] Reference Figures 7 to 9 , which is the fifth embodiment of the present invention, and this embodiment describes other structures included in this flexible plug structure in addition to the previous four embodiments: Specifically, the socket 100 also includes an outer shell 104 and a cover plate 105, the side wall of the outer shell 104 is provided with a mounting groove 104a, and the groove cavity of the mounting groove 104a is further provided with a second elastic member 104b; the cover plate 105 is arranged at the groove opening of the mounting groove 104a, and a through hole T is opened in the side wall of the plate body, and the through hole T is aligned with and communicated with the mounting hole 101a, and its hole opening is not smaller than the hole opening of the mounting hole 101a.

[0060] The length of the mounting groove 104a is greater than that of the limiting slider 101 . The limiting slider 101 is slidably disposed in the mounting groove 104a , and one end of the second elastic member 104b away from the side wall of the mounting groove 104a is connected to the side wall of the limiting slider 101 .

[0061] One end of the pin board 102 is symmetrically provided with plug-in copper sheets 102d, and the busbar plug-in pile head 200 can be plugged in between the plug-in copper sheets 102d and contact each other.

[0062] In view of the above-described features, the outer shell 104 is the shell part of the plug-in box 100, and the mounting groove 104a and the matching cover plate 105 opened on its surface are used for the installation and limiting of the limit slider 101, and the groove length of the mounting groove 104a is greater than the length of the limit slider 101, so the limit slider 101 will be able to slide in the mounting groove 104a to form a lateral displacement; and in order to limit the position of the limit slider 101 in the mounting groove 104a, the second elastic member 104b connected to the two ends of the slider is used to jointly constrain it so that it can maintain and return to the initial set position. The through hole T opened in the cover plate 105 is connected to the mounting groove 104a, which is convenient for the extension of the end of the pin plate 102.

[0063] The pin board 102 cooperates with the busbar plug-in post 200 by connecting one end with the plug-in copper sheet 102d to form a contact fit between the conductors.

[0064] The assembly process of the plug-in box 100 with this flexible plug-in structure is as follows: according to the different structures in the above-mentioned embodiments 1 to 4, the pin plate 102 and the elastic member 103 are assembled in the limiting slider 101, and then the second elastic member 104b is placed in the installation groove 104a and pre-tightened, and then the assembled limiting slider 101 is placed in the installation groove 104a, and the pre-tightened second elastic member 104b is loosened, and finally the cover plate 105 is covered to complete the overall assembly.

[0065] When the busbar plug-in post 200 is offset in position, during the insertion process of the plug-in box 100, the two plug-in copper sheets 102d of the pin plate 102 are subjected to different forces. Under the action of this force, the pin plate 102 will follow the displacement of the busbar plug-in post 200, and the two plug-in copper sheets 102d of the pin plate 102 can both normally contact the busbar plug-in post 200, ensuring that the two plug-in copper sheets 102d can both transmit electrical energy evenly.

[0066] When the busbar plug-in post 200 has an angular offset, during the insertion process into the plug-in box 100, the plug-in will cause a torque to be generated relative to the contact surface of the pin plate 102, and the connection area between the pin plate 102 and the limiting slider 101 will undergo relative axial rotation, automatically adjusting the direction of the pin plate 102 to ensure that the pin plate 102 can be smoothly inserted into the busbar plug-in post 200.

[0067] When the pin plate 102 is pulled out from the busbar plugging post 200, the elastic member 103 and the second elastic member 104b restore the pin plate 102 to its original designed position and angle, so as to be ready for the next plugging.

[0068] Example 6

[0069] Reference Figure 8 and 9, which is the sixth embodiment of the present invention, and is used to specifically define the design requirements for the displacement deviation and angle deviation of the flexible plug-in structure in the plug-in box 100:

[0070] Specifically, it is assumed that when the pin plate 102 is vertically limited to the middle position of the mounting hole 101a, it is the initial state. At this time, the gaps between the two ends of the limit slider 101 in the length direction and the side walls of the groove cavity of the mounting groove 104a are a, half of the hole width of the mounting hole 101a is b, and the distance between the side wall of the pin plate 102 and the inner cavity side wall of the mounting hole 101a is c; the distance between the axis of the axial rotation of the pin plate 102 and the surface of the cover plate 105 is d;

[0071] Then, in order to ensure that the pin plate 102 and the limit slider 101 have displacement adjustment capabilities, the following relationship needs to be satisfied: b>c≥a, then the maximum adjustable displacement is a; and the pin plate 102 has angle adjustment capabilities, then the maximum adjustment angle θ is expressed as:

[0072]

[0073] Furthermore, the plug-in copper sheet 102d is symmetrically arranged at the end of the pin board 102, and its free end is an insertion section. Fig. 9 As shown in , it is generally approximately an arc, and the radius is set to r. The end of the busbar plug-in pile head 200 is generally a rounded rectangle, and the busbar thickness is equal to the rounded diameter, which is set to R. Then according to the analysis, it can be known that the slope k of the line connecting the centers of the two arcs is expressed as:

[0074]

[0075] Wherein, x is the horizontal coordinate of the arc center trajectory of the insertion segment of the plug-in copper sheet 102d, and |x|≤R+r.

[0076] According to the slope k, the force direction of the pin plate 102 during the plugging process can be obtained as: tan -1 k.

[0077] Force analysis of the pin plate 102 when the position of the busbar plug-in pile head 200 is offset:

[0078] When the position of the busbar plug-in terminal 200 is offset, in the most serious case, the insertion section of the copper plug sheet 102c of the pin board 102 is subjected to unilateral force, and the magnitude of this force is affected by two factors: one is the force direction of the insertion section of the copper plug sheet 102c, and the other is the size of the opening of the copper plug sheet 102c (corresponding to the elastic force of the spring).

[0079] The elastic coefficient of the second elastic member 104 b is selected to ensure that when the busbar plugging post 200 is offset, the elastic force generated by it is smaller than the x-direction component of the force on the pin plate 102 .

[0080] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A flexible plug-in structure for busbar power tapping, characterized in that: include, A socket (100), the socket (100) comprising a limiting slider (101) and a pin plate (102) arranged in the limiting slider (101); The limiting slider (101) is provided with a mounting hole (101a) penetrating the body thereof, the pin plate (102) penetrates and axially rotates in the mounting hole (101a), and its two ends extend outside the mounting hole (101a), and the width of the pin plate (102) is smaller than the width of the mounting hole (101a).

2. The flexible plug-in structure for busbar power tapping according to claim 1 is characterized in that: The socket (100) further comprises an elastic member (103), and the elastic member (103) is arranged at the connection between the pin plate (102) and the mounting hole (101a).

3. The flexible plug-in structure for busbar power tapping according to claim 2 is characterized in that: Symmetrical arc grooves (101a-1) are provided in the axial side wall of the mounting hole (101a), and the elastic members (103) are distributed on both sides of the arc groove (101b).

4. The flexible plug-in structure for busbar power tapping according to claim 3 is characterized in that: A protrusion (102a) protruding from the surface is arranged on the side wall of the plate body of the pin plate (102), and a matching portion (102b) is arranged on the side wall of the protrusion (102a); The protrusion (102a) is fitted and limited in the arc groove (101a-1), and can prevent the pin plate (102) from falling off when it deflects in the mounting hole (101a); The matching portion (102b) can contact the elastic member (103) to keep the pin plate (102) in an initial state.

5. The flexible plug-in structure for busbar power tapping according to claim 2, characterized in that: A shaft rod (101a-2) is arranged in the installation hole (101a), and the pin plate (102) is rotatably connected to the shaft rod (101a-2) via a connection hole (102c) opened in the side wall.

6. The flexible plug-in structure for busbar power tapping according to claim 5, characterized in that: The elastic member (103) is sleeved on the shaft (101a-2) and / or is symmetrically distributed on both sides of the mounting hole (101a).

7. The flexible plug-in structure for busbar power tapping according to claim 4 or 6, characterized in that: The socket (100) further comprises an outer shell (104) and a cover plate (105); a mounting groove (104a) is provided in a side wall of the outer shell (104); and second elastic members (104b) are provided on both sides of the groove cavity of the mounting groove (104a); The cover plate (105) is arranged at the slot opening of the mounting slot (104a), and a through hole (T) is opened in the side wall of the plate body. The through hole (T) is aligned with and communicated with the mounting hole (101a), and its opening is not smaller than the opening of the mounting hole (101a).

8. The flexible plug-in structure for busbar power tapping according to claim 7, characterized in that: The length of the groove cavity of the installation groove (104a) is greater than the length of the limiting slider (101), the limiting slider (101) is slidably arranged in the installation groove (104a), and one end of the second elastic member (104b) away from the side wall of the installation groove (104a) is connected to the side wall of the limiting slider (101).

9. The flexible plug-in structure for busbar power tapping according to claim 8, characterized in that: One end of the pin board (102) is symmetrically provided with plugging copper sheets (102d), and the busbar plugging pile head (200) can be plugged in between the plugging copper sheets (102d) and contact each other.

10. A busbar plug-in box, characterized in that: A flexible plug-in structure for busbar power tapping as claimed in any one of claims 1 to 9 is installed at the connection end of the box body, and is plug-connected to the copper sheet at the end of the busbar.

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