Fixed buckle of plug-in small fuse switch device

Abstract

Fixed buckle of a pluggable small fuse switch device, characterized in that: the fixed buckle (3d) includes a fixed buckle body (3d02), a locking boss (3d01) is provided at the bottom of the fixed buckle body (3d02), and the locking boss (3d01) can protrude from or retract into the notch (1a) on the housing (3a) during the rotation of the fixed buckle body (3d02). A spring mounting boss (3d0201) is provided at the upper end of the fixed buckle body (3d02) for hanging the return spring (3e). A linkage groove (3d0202) is provided on the fixed buckle body (3d02) for accommodating one end of the connecting rod (3b) passing through the connecting rod mounting hole (3a0102) or the linkage column (3a0102a'). A position limiting boss (3d0203) is provided at the upper end of the fixed buckle body (3d02) for limiting the movement stroke of the connecting rod (3b). The fixed buckle of this switch device reduces the number of parts, reduces the occupied space, improves the safety of use and the reliability of installation of the switch device, and meets the requirements of the technical development of electrical equipment for the performance of the fuse disconnecting switch.

Description

Technical Field

[0001] The present invention belongs to the technical field of low-voltage electrics, and specifically relates to a fixing buckle for a plug-in small fuse switch device. Background Art

[0002] A fuse disconnecting switch is a switch that protects electrical equipment through a fuse. This disconnecting switch requires simple and rapid closing and opening operations during use. It is usually used in power transmission and distribution systems. By making full use of the protection characteristic curve of the fuse, it protects the equipment in the distribution line and provides an obvious disconnection point during maintenance to ensure the personal safety of the staff and protect the safety of the entire circuit.

[0003] With the development of electrical equipment technology, the current traditional fuse disconnecting switch has the following defects due to the limitations of its own structure:

[0004] (1) The fuse switch device used in a narrow installation space does not have a mechanism isolation contact that can perform closing and opening operations, which poses a safety hazard during the repair and maintenance of equipment and switches;

[0005] (2) The side shells of different fuse switch products are in direct contact, reducing the heat dissipation effect between the switch products;

[0006] (3) The existing fuse switch products use buttons for closing and opening operations, and their closing and opening states are not clearly indicated, which is prone to misoperation;

[0007] (4) The existing fuse switch has no mechanism cooperation with the cabinet body. When installed in a specific installation space, it is impossible to judge whether the switch is installed in place, and it is also impossible to ensure reliable contact with the circuit after the switch is installed in the cabinet;

[0008] (5) The fuse core of the existing fuse switch is connected to the conductive component by means of pressure contact, which is likely to cause too high a temperature rise in the circuit;

[0009] (6) The moving contact of the mechanism of the existing fuse switch requires a large space;

[0010] (7) The existing fuse switch lacks an anti-reverse device, which is prone to misoperation during wiring and may cause equipment burnout. Summary of the Invention

[0011] The purpose of the present invention is to address the above-mentioned defects of the existing fuse disconnecting switch, provide a fixing buckle for a plug-in small fuse switch device, re-design the fixing buckle of the existing fuse disconnecting switch, reduce the number of parts, reduce the occupied space, improve the safety of the switch device during use and the reliability of installation, and meet the requirements of the development of electrical equipment technology for the performance of the fuse disconnecting switch.

[0012] Technical solution

[0013] In order to achieve the above technical purpose, the fixing buckle of the pluggable small fuse-type switch device provided by the present invention is characterized in that: the fixing buckle includes a fixing buckle body, a locking boss is arranged at the bottom of the fixing buckle body, and the locking boss can protrude from or retract into the notch on the housing during the rotation of the fixing buckle body, a spring mounting boss is arranged at the upper end of the fixing buckle body for hanging the return spring, a linkage groove is arranged on the fixing buckle body for accommodating one end of the connecting rod or the linkage column passing through the connecting rod mounting hole, and a position limiting boss is arranged at the upper end of the fixing buckle body for limiting the movement stroke of the connecting rod.

[0014] Furthermore, a second rotation center hole is arranged on the fixing buckle body, and the fixing buckle body is installed on the second shaft in the housing through the second rotation center hole and can rotate around the second shaft.

[0015] Furthermore, the first shaft and the second shaft are coaxial.

[0016] Furthermore, the linkage groove is an arc-shaped linkage groove.

[0017] Furthermore, one end of the return spring is hung on the spring mounting boss, and the other end is hung on the spring mounting post on the contact support body.

[0018] Furthermore, the return spring is arranged vertically, one end abuts against the fixing buckle, and the other end is located in the spring groove in the housing.

[0019] Furthermore, the return spring is a torsion spring, the torsion spring is sleeved on the torsion spring mounting post in the housing, and one end abuts against the fixing buckle.

[0020] Furthermore, the return spring is a compression spring.

[0021] Beneficial effects

[0022] The fixing buckle of the pluggable small fuse-type switch device provided by the present invention re-designs the fixing buckle of the existing fuse-type disconnecting switch, and cooperates with reducing the number of parts, so as to reduce the occupied space, improve the safety of the switch device during use and the reliability of installation, and meet the requirements of the technical development of electrical equipment for various performances of the fuse-type disconnecting switch. Description of the drawings

[0023] Attached Figure 1 is the product schematic diagram of the switch device in Embodiment 1 of the present invention;

[0024] Attached Figure 2 is the internal layout structure schematic diagram of the switch device in Embodiment 1 of the present invention;

[0025] AttachedFigure 3 It is a schematic structural diagram of the switch device in Embodiment 1 of the present invention;

[0026] Appendix Figure 4 It is a schematic diagram of the switch device installed in the switch installation cabinet in Embodiment 1 of the present invention;

[0027] Appendix Figure 5 It is a schematic installation diagram of the mechanism module in Embodiment 1 of the present invention;

[0028] Appendix Figure 6 It is a schematic diagram of the concave groove structure on the outer shell in Embodiment 1 of the present invention;

[0029] Appendix Figure 7 It is a schematic structural diagram of the operating member in Embodiment 1 of the present invention;

[0030] Appendix Figure 8 It is a front view of the operating member in Embodiment 1 of the present invention;

[0031] Appendix Figure 9 It is a schematic structural diagram of the fixing buckle in Embodiment 1 of the present invention;

[0032] Appendix Figure 10 It is a schematic structural diagram of the contact support member in Embodiment 1 of the present invention;

[0033] Appendix Figure 11 It is a schematic diagram of the moving contact installed on the contact support member in Embodiment 1 of the present invention;

[0034] Appendix Figure 12 It is a schematic diagram of the moving contact and torsion spring installed on the contact support member in Embodiment 1 of the present invention;

[0035] Appendix Figure 13 It is a schematic installation diagram of the moving contact and torsion spring in Embodiment 1 of the present invention;

[0036] Appendix Figure 14 It is a schematic structural diagram of the moving contact in Embodiment 1 of the present invention;

[0037] Appendix Figure 15 It is a schematic structural diagram of the fuse core module in Embodiment 1 of the present invention;

[0038] Appendix Figure 16 It is a schematic structural diagram of the plug-in module in Embodiment 1 of the present invention;

[0039] Appendix Figure 17 It is a schematic diagram of the mechanism module in the open state in Embodiment 1 of the present invention;

[0040] Appendix Figure 18 It is a schematic diagram of the mechanism module in the closed state in Embodiment 1 of the present invention;

[0041] Appendix Figure 19It is a schematic diagram of the movement stroke of the fixed buckle obstructing the connecting rod in Embodiment 1 of the present invention;

[0042] Appendix Figure 20 It is a schematic diagram of the fixed buckle starting to move to unlock the switch device in Embodiment 1 of the present invention;

[0043] Appendix Figure 21 It is a schematic diagram of the structure of the operating member in Embodiment 2 of the present invention;

[0044] Appendix Figure 22 It is a schematic diagram of the installation structure of the return spring in Embodiment 3 of the present invention;

[0045] Appendix Figure 23 It is a schematic diagram of the installation structure of the return spring in Embodiment 4 of the present invention; Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Embodiment 1

[0048] As shown in Appendix Figure 1 , 2, 3 and 4, the fixed buckle of the plug-in small fuse type switch device provided in this embodiment includes a housing 1, a wiring module 2, a mechanism module 3, a contact system 4, a fuse core module 5 and a plug-in module 6. As shown in Appendix Figure 6 , the two side surfaces of the housing 1 are provided with sunken concave grooves 1e. The wiring module 2 and the mechanism module 3 are installed in the housing 1 on the same side of the housing 1 and are arranged up and down. The plug-in module 6 is installed in the housing 1 on the other side opposite to the wiring module 2 and the mechanism module 3. The fuse core module 5 is installed in the housing 1 between the wiring module 2 and the plug-in module 6. The contact system 4 is installed in the housing 1 between the mechanism module 3 and the plug-in module 6. The contact system 4 and the fuse core module 5 are installed up and down. The static contact 401 in the contact system 4 is electrically connected to the plug-in module 6. As shown in Appendix Figure 15 , the fuse core module 5 includes a fuse core 501. The two ends of the fuse core 501 are covered by conductive plates 502 and then embedded in the installation groove in the housing 1. The conductive plates 502 and the fuse core 501 are riveted and connected. The conductive plates 502 at both ends of the fuse core 501 are respectively electrically connected to the corresponding wiring module 2 and plug-in module 6. As shown in Appendix Figure 16As shown, the plug-in module 6 includes a signal terminal 601 and a power terminal 602. The signal terminal 601 and the power terminal 602 are set with different plug-in depths to avoid reverse misinstallation.

[0049] Specifically, as shown in the appendix Figure 5 As shown, the mechanism module 3 includes an operating member 3a. The operating member 3a is connected to a contact support member 3c through a connecting rod 3b. The operating member 3a can rotate within the housing 1. During the rotation of the operating member 3a within the housing 1, the operating member 3a can drive the moving contact 402 on the contact support member 3c to contact or separate from the corresponding static contact 401 through the connecting rod 3b to realize the on / off of the switching device.

[0050] One end of the connecting rod 3b connected to the operating member 3a is also linked with a fixing buckle 3d. The fixing buckle 3d is installed within the housing 1 and can rotate. In this embodiment, the fixing buckle 3d is installed within the housing 1 and rotates coaxially with the operating member 3a. During the rotation of the fixing buckle 3d within the housing 1, the locking boss 3d01 on the fixing buckle 3d can protrude from or retract into the notch 1a on the housing 1; the locking boss 3d01 on the fixing buckle 3d protrudes from the notch 1a on the housing 3a and corresponds to the notch on the switch installation cabinet body to realize the locking installation of the switching device.

[0051] During the process that the operating member 3a drives the contact support member 3c to move through the connecting rod 3b, thereby driving the moving contact 402 and the static contact 401 to perform opening and closing operations, the fixing buckle 3d is not linked. After the operating member 3a is in the opening position and continues to rotate counterclockwise, it can drive the fixing buckle 3d to rotate counterclockwise through the connecting rod 3b, so that the locking boss 3d01 retracts from the notch 1a on the housing 1.

[0052] The fixing buckle 3d is connected with a return spring 3e, which can make the fixing buckle 3d have a tendency to rotate clockwise to reset. In this embodiment, the return spring 3e is a compression spring. One end of the return spring 3e is hung on the spring installation boss 3d0201, and the other end is hung on the spring installation post 3c0104 on the contact support body 3c01.

[0053] Furthermore, as shown in the appendix Figure 7 and 8As shown, the operating member 3a includes an operating body 3a01. A first rotation center hole 3a0101 is provided on the operating body 3a01. The operating body 3a01 is mounted on a first shaft 1b within the housing 1 through the first rotation center hole 3a0101 and can rotate around the first shaft 1b. One end of the operating body 3a01 is provided with a connecting rod mounting hole 3a0102. One end of the connecting rod 3b passes through the connecting rod mounting hole 3a0102 and extends into a linkage groove 3d0202 within the fixed buckle 3d. In this embodiment, the linkage groove 3d020202 is an arc-shaped linkage groove. The other end of the operating body 3a01 is a handle end 3a0103. When a force is applied to the handle end 3a0103, it can drive the operating body 3a01 to rotate around the first shaft 1b to achieve opening and closing control of the switching device. A pulling feature portion 3a0103a is provided on the handle end 3a0103 for pulling out the switching device from the switch installation cabinet body. In this embodiment, the pulling feature portion 3a0103a is a protrusion provided on the handle end 3a0103.

[0054] As shown in Figure 1 , Figures 2, 3 and 9, the fixed buckle 3d includes a fixed buckle body 3d02. A locking boss 3d01 is provided at the bottom of the fixed buckle body 3d02. During the rotation of the fixed buckle body 3d02, the locking boss 3d01 can protrude from or retract into a notch 1a on the housing 3a. A spring mounting boss 3d0201 is provided at the upper end of the fixed buckle body 3d02 for hanging the return spring 3e. A linkage groove 3d020202 is provided on the fixed buckle body 3d02 for accommodating one end of the connecting rod 3b passing through the connecting rod mounting hole 3a0102 or a linkage post 3a0102a'. A position limiting boss 3d0203 is provided at the upper end of the fixed buckle body 3d02 for limiting the movement stroke of the connecting rod 3b. A second rotation center hole 3d0204 is provided on the fixed buckle body 3d02. The fixed buckle body 3d02 is mounted on a second shaft 1c within the housing 1 through the second rotation center hole 3d0204 and can rotate around the second shaft 1c. The first shaft 1b and the second shaft 1c are coaxial.

[0055] As shown in Figure 1, 2, 3, 10, 11, 12, 13 and 14, the contact support member 3c includes a contact support body 3c01, the contact support member 3c01 is provided with a rotation center hole 3c02, the contact support body 3c01 is installed on the shaft 3 1d in the housing 1 using the rotation center hole 3c02, the contact support body 3c01 is provided with a connecting rod hole 3c0101, the other end of the connecting rod 3b is installed in the connecting rod hole 3c0101, the contact support body 3c01 A moving contact receiving groove 3c0102 is installed on the contact support body 3c01, and a torsion spring 3c0103 is installed on the contact support body 3c01 to press against the moving contact 402 so that the moving contact 402 is placed in the moving contact installation groove 3c0102. The contact end of the moving contact 402 extends out of the moving contact installation groove 3c0102. After the moving contact 402 and the static contact 401 come into contact, they can rotate relative to the contact support body 3c01 in the moving contact installation groove 3c0102 under the force of the torsion spring 3c0103. The torsion spring 3c0103 is sleeved on the torsion spring shaft 3c0104 of the contact support body 3c01 and one end presses against the moving contact 402.

[0056] In this embodiment, the operating member moves clockwise to move the movable contact toward the attached Figure 18 In the closing state movement shown in the figure, the force of the rotation of the operating member is transmitted to the contact support member 3c through the connecting rod 3b, thereby driving the contact 402 and the static contact 401 to close the circuit; after the moving contact 402 contacts the static contact 401, the mechanism module will continue to move, and the moving contact 402 will no longer follow the movement of the contact support member 3c, but will circle around the moving contact 402 and lean against the two arc edges of the contact support member 3c, and make a rotational movement in the moving contact mounting groove 3c0102. At this time, the torsion spring 3c0103 provides the contact pressure required by the moving contact 402, and is also used to apply a leftward force to the moving contact 402 to maintain the balance of force in the closing state; as shown in the attached figure Figure 17 As shown, when the switch is opened, the contact support 3c relies on the restoring force of the reset spring 3e until the contact support 3c abuts against the limiting boss of the housing 1. This is the farthest point of the switch opening of the contact system 4, and the moving contact 402 also returns to the initial position;

[0057] In this embodiment, as shown in the attached Figure 4 As shown, a concave groove 1e is sunken on both sides of the housing 1, so that after different switch products are installed in the cabinet A, the sunken concave grooves 1e will not touch each other, so that the gap between the product surfaces can allow more hot air to diffuse out of the switch, so that the temperature rise of the switch product is reduced;

[0058] When the product is closed or opened, the handle end can be operated upward or downward to realize the opening and closing conversion. When the switch product needs to be pulled out of the switch installation cabinet by the operating member, the pull-out feature part 3a0103a of the handle end can also serve as the force point of the hand, so that the hand can apply force to pull the switch out of the switch installation cabinet;

[0059] As attached Figure 5 , 17, 18, 19 and 20, when the switch is in the open and closed state, the fixed buckle 3d has no coordination with the mechanism. When opening, the operating member 3a drives the connecting rod 3b to stay at the upper end of the linkage groove 3d0202, and stays at the lower end when closing. The connecting rod 3 can move in the linkage groove 3d0202. When the fixed buckle 3d does not move, the reset spring 3e applies force to the contact support 3c to make it move in the opening direction. When the product needs to be pulled out, the operating member 3a is pushed to the opening position, and then force is applied to move the operating member 3a counterclockwise. At this time, the operating member 3a drives the contact support 3c to move in the opening direction. The moving connecting rod 3b stays on the upper part of the fixing buckle 3d, and the operating member 3a continues to move counterclockwise to drive the connecting rod 3b to move with it, and then the connecting rod 3b will drive the fixing buckle 3d to move counterclockwise, and then the locking boss 3d01 will rotate back to the inside of the shell, releasing the locking function of the switch device and the outer shell 1. At this time, the product can be pulled out by using the extraction feature 3a0103a at the handle end. Once the force on the operating member 3a is removed, the fixing buckle 3d will move clockwise under the action of the reset spring 3e until it extends out of the notch 1a on the shell 1;

[0060] When the switch is assembled into the switch installation cabinet, it needs to go through the stage where the fixing buckle 3d is pressed into the housing 1 by the cabinet. This stage is when the switch is not installed in place. The upper end of the fixing buckle body 3d02 is provided with a position limiting boss 3d0203 which cooperates with the connecting rod 3b to prevent the angle of the mechanism module transmission from reaching the dead point position, so as to ensure that the product cannot be assembled in place and the product cannot be closed. The closing assembly of the product will be driven to the opening position by the fixing buckle 3d. Only after the switch is assembled in place can the locking boss 3d01 reach the notch position reserved in the cabinet, thereby extending out of the cabinet again to lock the switch device with the cabinet.

[0061] Example 2

[0062] As attached Figure 21 As shown, in an embodiment provided by the present invention, one end of the operating body 3a01 is provided with a connecting rod installation groove 3a0102', one end of the connecting rod 3b is installed in the connecting rod installation groove 3a0102', and the back of the operating body 3a01 is provided with a linkage column 3a0102a', and the linkage column 3a0102a' extends into the linkage groove 3d0202. Other structures and working principles are the same as those in embodiment 1, and will not be further described in detail here.

[0063] Example 3

[0064] As shown in the appendix Figure 22 As shown, the return spring 3e is vertically arranged, with one end abutted against the fixed buckle 3d and the other end located in the spring groove 1f inside the housing 1. Other structures and working principles are the same as those in Embodiment 1 and will not be further described in detail here.

[0065] Embodiment 4

[0066] As shown in the appendix Figure 23 As shown, the return spring 3e is a torsion spring. The torsion spring is sleeved on the torsion spring mounting post 1g inside the housing 1, and one end abuts against the fixed buckle 3d. Other structures and working principles are the same as those in Embodiment 1 and will not be further described in detail here.

[0067] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0068] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. The mechanism module (3) of a pluggable small fuse switch device, characterized in that: The pluggable small fuse switch device includes a housing (1) and a mechanism module (3); The mechanism module (3) includes an operating member (3a); The operating member (3a) is connected to a contact support member (3c) through a connecting rod (3b); The operating member (3a) includes an operating body (3a01), and a connecting rod mounting hole (3a0102) is provided at one end of the operating body (3a01); A linkage column (3a0102a') is provided on the back of the operating body (3a01); The fixing buckle (3d) includes a fixing buckle body (3d02), a locking boss (3d01) is provided at the bottom of the fixing buckle body (3d02), and the locking boss (3d01) can extend out of or retract into a notch (1a) on the housing (1) during the rotation of the fixing buckle body (3d02). A spring mounting boss (3d0201) is provided at the upper end of the fixing buckle body (3d02) for hanging a return spring (3e). A linkage groove (3d0202) is provided on the fixing buckle body (3d02) for accommodating one end of the connecting rod (3b) passing through the connecting rod mounting hole (3a0102) and the linkage column (3a0102a'). A position limiting boss (3d0203) is provided at the upper end of the fixing buckle body (3d02) for limiting the movement stroke of the connecting rod (3b).

2. The mechanism module (3) of the pluggable miniature fuse switch device according to claim 1, characterized in that: A second rotation center hole (3d0204) is provided on the fixing buckle body (3d02), and the fixing buckle body (3d02) is mounted on a second shaft (1c) inside the housing (1) through the second rotation center hole (3d0204) and can rotate around the second shaft (1c).

3. The mechanism module (3) of the plug-in type small fuse switch device according to claim 2, characterized in that: A first rotation center hole (3a0101) is provided on the operating body (3a01), and the operating body (3a01) is mounted on a first shaft (1b) inside the housing (1) through the first rotation center hole (3a0101) and can rotate around the first shaft (1b). The first shaft (1b) and the second shaft (1c) are coaxial.

4. The mechanism module (3) of the plug-in small fuse-type switch device according to claim 1, characterized in that: The linkage groove (3d0202) is an arc-shaped linkage groove.

5. The mechanism module (3) of the pluggable small fuse switch device according to claim 1, characterized in that: One end of the return spring (3e) is hung on the spring mounting boss (3d0201), and the other end is hung on a spring mounting stud (3c0105) on the contact support body (3c01).

6. The mechanism module (3) of the plug-in small fuse switch device according to claim 1, characterized in that: The return spring (3e) is vertically arranged, with one end abutting against the fixing buckle (3d) and the other end located in a spring groove (1f) inside the housing (1).

7. The mechanism module (3) of the pluggable small fuse switch device according to claim 1, characterized in that: The return spring (3e) is a torsion spring, and the torsion spring is sleeved on a torsion spring mounting post (1g) inside the housing (1), with one end abutting against the fixing buckle (3d).

8. The mechanism module (3) of the pluggable small fuse switch device according to claim 1 or 6, characterized in that: The return spring (3e) is a compression spring.

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