Universal isolating switch
By designing and enhancing the support structure and anti-fire design in a universal isolation switch, the problems of insufficient support and lack of anti-fire design in the prior art are solved, and the reliability and production efficiency of the isolation switch are improved.
Patent Information
- Application Number
- CN202420473520.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-03-12
AI Technical Summary
The existing universal isolation switch has insufficient support and lack of anti-stopping design in design, resulting in contact collapse and assembly errors, affecting production efficiency.
A universal isolating switch is designed, using a "┌" type support member and a support boss structure to enhance the support strength of the contacts, and avoid interference with the shell through a misplaced contact structure through a dumb-position design.
By enhancing the support structure, contact collapse and assembly errors are avoided, the reliability and production efficiency of the isolating switch are improved, and the possibility of rework is reduced.
Smart Images
Figure CN222462709U_ABST
Abstract
Description
Technical Field
[0001] The utility model specifically relates to a universal isolating switch. Background Art
[0002] The main function of the isolating switch is to disconnect the circuit so that the energized and non-energized parts can be clearly isolated, thus protecting people and equipment.
[0003] However, there is no arc extinguishing device installed inside the disconnector. The arc generated by the disconnection is mainly extinguished by itself due to the large contact opening distance. In view of this point, the single-contact bridge or double-contact bridge structure currently used in the industry is carried out for opening and closing. Due to different overcurrent requirements, two sets of shells are generally designed, that is, one set of shells is used for the current requirement of 80-100A, and the other set of shells is used for the current requirement of 125A. Different shells need to be selected for different current requirements.
[0004] However, this method uses two sets of shells, which result in different shells not being interchangeable, resulting in increased mold costs and higher warehouse management and production management costs. In order to reduce production costs, companies generally adopt a universal shell design so that the same set of shells can meet the needs of single-contact bridge structure or double-contact bridge structure. Only the contact bridge structure needs to be replaced to achieve switching between different current requirements.
[0005] The existing universal housing design, such as Figure 1 As shown, the contact side of the double contact is supported by the supporting point a, and the wiring side is supported by the wiring terminal 2. Although the double contact and the single contact can be used interchangeably, there are the following risks:
[0006] 1. The contact side of the contact is supported only by support point a, and its supporting force is insufficient, which may cause the contact to collapse and lead to closing failure;
[0007] 2. There is a lack of fool-proof design at support point a. When workers are assembling for a long time and are fatigued, they may mistakenly install the contact on the lower side of support point a. Figure 2 ( Figure 2 As shown in the figure, the problem that may occur after installing a single contact is only shown in the figure, which may cause failure during factory testing after assembly, requiring rework and affecting production efficiency. Utility Model Content
[0008] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a universal isolating switch.
[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0010] A universal isolating switch comprises a housing, a handle rotatably arranged on the housing, a contact support slidably arranged on the inner side of the housing, a contact structure arranged on both sides of the contact support, a first elastic member clamped in the contact support, and a second elastic member connecting the housing and the handle, wherein the contact support is linked and arranged below the handle, and the housing is provided with:
[0011] Two "┌"-shaped support members are arranged in a mirror image along the axial direction of the contact support, and a first gap is formed between the "┌"-shaped support member and the terminal mounting grooves on both sides for the upper contact end of the double contact structure to extend upward to the top of the "┌"-shaped support member;
[0012] Two support members symmetrically arranged along the contact support axis direction are placed on the lower side of the "┌"-shaped support member, and the support member is provided with a support boss in the direction of the terminal mounting slot, and a second gap is formed between the support boss and the "┌"-shaped support member for the lower contact end of the double contact structure or the single contact structure to pass through and be placed above the support member;
[0013] A plurality of fool-proof parts are extended downward from the lower side of the support part.
[0014] The contact structure is a single contact structure or a double contact structure.
[0015] The single contact structure comprises:
[0016] The terminal has a plurality of corrugated indentations on its lower surface;
[0017] The contact end is arranged in parallel with the wiring terminal and is formed by bending one side of the wiring terminal downward twice.
[0018] The supporting boss extends along the width direction of the contact structure.
[0019] The length of the supporting boss is greater than or equal to half the width of the contact end of the contact structure.
[0020] One end of the supporting boss is provided with an inclined surface.
[0021] A notch is arranged on the lower side of the “┌”-shaped support member.
[0022] The foolproof part is a strip structure provided with a plurality of vertical support members.
[0023] The shell also includes an indicator located on one side of the top end of the contact support, and the top end of the contact support extends toward the indicator to form a linkage rod. The middle part of the indicator can be rotatably installed in the shell, and a guide groove is provided at the position where one end of the indicator and the linkage rod cooperate. The linkage rod is provided with a cylinder that can be slidably placed in the guide groove, and the indicator can be driven to rotate synchronously by the contact support action.
[0024] The beneficial effects of the utility model are as follows: by providing a support boss on the lower side of the contact structure, the support boss is used to enhance the support strength of the contact structure, and at the same time, the anti-mistake design on the lower side of the support is used to avoid the contact structure installed in the wrong position from interfering with the shell, and to avoid the appearance of reworked products due to normal covering of the shell. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 The figure is a schematic diagram of the structure inside the isolating switch housing in the prior art.
[0026] Figure 2 The diagram is a schematic diagram of risks that may occur during the assembly process of the isolating switch in the prior art.
[0027] Figure 3 It is a schematic diagram of the internal structure of the utility model.
[0028] Figure 4 It is a structural schematic diagram of the shell of the utility model.
[0029] Figure 5 Schematic diagram of the contact structure of the present invention, A is a single contact structure; B is a double contact structure. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0032] As shown in the figure, a universal isolating switch includes a shell, a handle 4 rotatably arranged on the shell, a contact support 3 slidably arranged on the inner side of the shell, a contact structure 1 arranged on both sides of the contact support, a first elastic member 5 clamped in the contact support and a second elastic member 6 connecting the shell and the handle, the contact support is linked and arranged below the handle, the number of moving contact bridges is two, and two receiving grooves for accommodating the moving contact bridges are arranged on the contact support, one above and one below, the middle part of the moving contact bridge is placed in the receiving groove and a first elastic member is arranged between the top wall of the receiving groove to realize the elastic connection between the moving contact bridge 8 and the contact support, and two moving contacts located at both ends are arranged on the bottom surface of each moving contact bridge, the first elastic member can be a spring sheet, a spring or other elastic material, and the relative sliding of the contact support can make the moving contact bridge and the contact structure open or close, and the handle can be rotatably arranged in the shell and connected to the shell through the second elastic member, and the second elastic member can be a tension spring or a torsion spring.
[0033] The housing is provided with:
[0034] Two “┌”-shaped support members 10 are mirror-imaged along the axial direction of the contact support, and a first gap 9 is formed between the “┌”-shaped support member and the terminal mounting grooves on both sides for the upper contact end of the double contact structure to extend upward to the top of the “┌”-shaped support member;
[0035] Two support members 11 symmetrically arranged along the contact support axis direction are placed at the lower side of the “┌”-shaped support member, and the support member is provided with a support boss 12 facing the terminal mounting slot, and a second gap 13 placed above the support member is formed between the support boss and the “┌”-shaped support member for the lower contact end of the double contact structure or the single contact structure to pass through;
[0036] A plurality of foolproof parts 14 are extended downward from the lower side of the support member.
[0037] The contact structure is a single contact structure or a double contact structure. By replacing the contact structure, switching between the single contact structure and the double contact structure is achieved, the shell is universal, and the production cost, storage cost and management cost are reduced.
[0038] Correspondingly, a group of moving contacts or two groups of moving contacts are used for the single-contact structure or the double-contact structure to respectively open and close the contact structure.
[0039] The single contact structure comprises:
[0040] The wiring terminal 15 has a plurality of corrugated indentations on its lower surface to facilitate providing a clamping force on the wiring harness;
[0041] The contact end 16 is arranged parallel to the wiring terminal and is formed by bending one side of the wiring terminal downward twice.
[0042] The double-contact structure divides the contact end into two, one is bent upward twice, and the other is bent downward twice, so that the two contact ends are parallel to the wiring terminals respectively.
[0043] A silver contact is provided on the contact end and is placed below the moving contact. When the contact support drives the moving contact to move, the opening and closing actions of the two are realized.
[0044] The support boss extends along the width direction of the contact structure, that is, increases the support area of the contact structure, improves its support strength, and avoids the phenomenon that the contact support close to the two side supports may collapse under stress.
[0045] The length of the support boss is greater than or equal to half the width of the contact end of the contact structure, preferably half the width, to ensure the strength of the support boss, and the support area is larger, providing greater supporting force.
[0046] One end of the supporting boss is provided with an inclined surface to facilitate the contact structure to be inserted into the second gap.
[0047] A notch is provided on the lower side of the “┌”-shaped support member, and the notch is used to avoid the riveting point of the moving contact on the moving contact bridge, and also to limit the maximum opening distance thereof.
[0048] The foolproof part is a strip structure provided by a plurality of vertical support members, which reduces the width of the position in the shell. If the contact structure is placed there, the step of covering the two shells cannot be completed, thus preventing the faulty parts from flowing into the next process.
[0049] The shell also includes an indicator 7 located on one side of the top end of the contact support, and the top end of the contact support extends toward the indicator to form a linkage rod 31. The middle part of the indicator can be rotatably installed in the shell, and a guide groove 71 is provided at the position where one end of the indicator and the linkage rod cooperate. The linkage rod is provided with a cylinder that can be slidably placed in the guide groove, and the indicator can be driven to rotate synchronously by the contact support action.
[0050] The opening and closing indications are realized through the linkage-arranged indicating elements, and are directly driven by the contact support, making it easy to directly observe the switching status of the isolating switch and improving the convenience of user use.
[0051] Two different color areas may be provided on the indicating end of the indicating member, and the two different color areas are alternately opposite to the indicating window and are used to indicate the open state and the closed state of the isolating switch respectively.
[0052] The design of the guide groove allows the contact support to move downward a certain distance before driving the indicator to move, ensuring that the closing indication is achieved when the moving contact contacts the contact structure.
[0053] During the working process of the isolating switch of the utility model, the handle is pulled to drive the contact support to move downward, and the moving contact bridge moves downward synchronously with the contact support, and finally the moving contact on the moving contact bridge contacts with the static contact on the contact structure; after the contact support moves downward for a certain distance, the linkage rod of the contact support drives the indicating piece to rotate, and at the same time that the moving contact contacts with the static contact, the indicating end of the indicating piece completes the indication switching.
[0054] The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the protection scope of the present invention.
Claims
1. A universal isolating switch, comprising a housing, a handle rotatably arranged on the housing, a contact support slidably arranged on the inner side of the housing, a contact structure arranged on both sides of the contact support, a first elastic member clamped in the contact support, and a second elastic member connecting the housing and the handle, wherein the contact support is linked and arranged below the handle, and is characterized in that: The housing is provided with: Two "┌"-shaped support members are mirror-imaged along the axial direction of the contact support, and a first gap is formed between the "┌"-shaped support member and the terminal mounting grooves on both sides for the upper contact end of the double contact structure to extend upward to the top of the "┌"-shaped support member; Two support members symmetrically arranged along the contact support axis direction are placed on the lower side of the "┌"-shaped support member, and the support member is provided with a support boss in the direction of the terminal mounting slot, and a second gap is formed between the support boss and the "┌"-shaped support member for the lower contact end of the double contact structure or the single contact structure to pass through and be placed above the support member; A plurality of fool-proof parts are extended downward from the lower side of the support part.
2. The universal isolating switch according to claim 1, characterized in that: The contact structure is a single contact structure or a double contact structure.
3. The universal isolating switch according to claim 2, characterized in that: The single contact structure comprises: The terminal has a plurality of corrugated indentations on its lower surface; The contact end is arranged in parallel with the wiring terminal and is formed by bending one side of the wiring terminal downward twice.
4. The universal isolating switch according to claim 1, characterized in that: The supporting boss extends along the width direction of the contact structure.
5. The universal isolating switch according to claim 4, characterized in that: The length of the supporting boss is greater than or equal to half the width of the contact end of the contact structure.
6. The universal isolating switch according to claim 1, 4 or 5, characterized in that: One end of the supporting boss is provided with an inclined surface.
7. The universal isolating switch according to claim 1, characterized in that: A notch is provided on the lower side of the "┌"-shaped support member.
8. The universal isolating switch according to claim 1, characterized in that: The foolproof part is a strip structure provided with a plurality of vertical support members.
9. The universal isolating switch according to claim 1, characterized in that: The shell also includes an indicator located on one side of the top end of the contact support, and the top end of the contact support extends toward the indicator to form a linkage rod. The middle part of the indicator can be rotatably installed in the shell, and a guide groove is provided at the position where one end of the indicator and the linkage rod cooperate. The linkage rod is provided with a cylinder that can be slidably placed in the guide groove, and the indicator can be driven to rotate synchronously by the contact support action.