Knife switch with dynamic stable structure

Abstract

The utility model relates to a knife switch with a dynamic stable structure, which comprises a first base, a second base, a third base and a fourth base, the base II is provided with a static contact II, and the static contact II is provided with a hook; the first blade is rotationally connected with the first static contact, the first blade is in contact with the first static contact, and the first blade is in contact with or separated from the second static contact in the rotating process with a connecting shaft of the first blade and the first static contact as the center; and the bolt penetrates through the hook and is matched with one end, close to the static contact II, of the blade I so as to realize locking after the blade I and the static contact II are switched on. According to the knife switch with the dynamic stable structure, the structural design is improved, and the combination of the hook and the bolt is adopted, so that the stable and tight connection between the blade and the static contact can be realized, the bounce-off risk of the knife switch can be avoided, the use of components is reduced, and the production cost of the switch is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical component technology, and in particular to a knife switch with a dynamic stability structure. Background Technology

[0002] A knife switch, also known as a disconnector switch or disconnecting switch, is one of the simplest and most widely used low-voltage electrical appliances in manual control. It is used for infrequent manual connection and disconnection of AC and DC circuits or as a disconnecting switch. It isolates the power supply to ensure the safety of circuit and equipment maintenance; or it can be used for infrequent connection and disconnection of loads below the rated current; or to disconnect loads, such as infrequent connection and disconnection of low-voltage circuits with small capacity or direct starting of small-capacity motors. When a knife switch is in the open position, it is clearly visible, ensuring the safety of circuit maintenance personnel.

[0003] The following defects have been found in the use of existing knife switches:

[0004] 1. In existing knife switches, one end makes a planar contact with the lower stationary contact, while the other end typically makes a point or line contact with the upper stationary contact. Reliable contact between the knife switch and the stationary contact is ensured by the pressure of the contact spring. However, during current flow, there is still a possibility that the spring and its engaging connection structure may disengage, causing the knife switch to spring open and resulting in a current flow accident.

[0005] 2. The original knife switch design used a lot of components, and further optimization of the components is needed to reduce the cost of the knife switch. Utility Model Content

[0006] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the existing knife switch, which uses a spring connection, is difficult to achieve high current parameters under high current operating conditions.

[0007] To solve the above-mentioned technical problems, this utility model provides a knife switch with a dynamically stable structure, comprising: a base one, on which a stationary contact one is provided; a base two, on which a stationary contact two is provided, wherein the stationary contact two is provided with a hook; a blade one, which is rotatably connected to the stationary contact one and in contact with the stationary contact one, wherein the blade one rotates around the connecting shaft of the stationary contact one to achieve contact or separation with the stationary contact two; and a pin, which passes through the hook and the end of the blade one near the stationary contact two to achieve locking after the blade one and the stationary contact two are closed.

[0008] In one embodiment of the present invention, the knife switch further includes a second blade, which is disposed on both sides of the first stationary contact. The second blade is rotatably connected to the first stationary contact, and the second blade is in contact with the first stationary contact.

[0009] In one embodiment of the utility model, the rotating connecting piece is arranged between the blade one, the blade two and the static contact one, the rotating connecting piece includes the bolt one, the locking nut one and the spring one, the bolt one penetrates the blade one, the blade two and the static contact one, the locking nut one is used for defining the connection between the bolt one and the blade one, the blade two and the static contact one, the spring one is sleeved on the bolt one, and the spring one is located between the head of bolt one and the blade one.

[0010] In one embodiment of the utility model, the blade one is provided with the clamping piece one on the opposite outer wall of spring one, and the clamping piece one is used for increasing the rigidity of the blade one.

[0011] In one embodiment of the utility model, the blade two is provided with the clamping piece two on the opposite outer wall of locking nut one, and the clamping piece two is used for increasing the rigidity of the blade two.

[0012] In one embodiment of the utility model, the connecting piece two is arranged between the blade one and the blade two, and the connecting piece two is arranged at the end of the blade one and the blade two close to the static contact two.

[0013] In one embodiment of the utility model, the connecting piece two includes the bolt two, the locking nut two, the spring two and the operating handle, the bolt two penetrates the blade one and the blade two, the bolt two is locked with the blade one and the blade two through the locking nut two, the spring two is sleeved on the bolt two, and the spring two is located between the head of bolt two and the blade one, the operating handle is connected with the bolt two, and the operating handle is located between the blade one and the blade two.

[0014] In one embodiment of the utility model, the cylindrical block one is connected to the blade one, the cylindrical block two is connected to the blade two, the bolt two penetrates the cylindrical block one and the cylindrical block two, and the spring two is located between the head of bolt two and the end of cylindrical block one.

[0015] In one embodiment of the utility model, the cylindrical block three is connected to the operating handle, the cylindrical block three is sleeved on the bolt two, and the cylindrical block three is located between the cylindrical block one and the cylindrical block two.

[0016] In one embodiment of the utility model, the triangular convex parts are arranged on the opposite two end faces of the cylindrical block three and the cylindrical block one and the cylindrical block two, the triangular recess one is arranged on the opposite end face of the cylindrical block one and the cylindrical block three, the triangular recess two is arranged on the opposite end face of the cylindrical block two and the cylindrical block three, and the two triangular convex parts are arranged in the triangular recess one and the triangular recess two respectively.

[0017] The above technical scheme of the utility model has the following beneficial effects compared with the prior art:

[0018] The utility model discloses the knife switch with dynamic stabilizing structure, through the improvement structure design, adopt the combination of hook and bolt, can realize the stable close connection between blade and static contact, can avoid the risk of knife switch to open, reduces the use of component simultaneously, reduces the production cost of switch. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the content of the utility model more easily be clearly understood, below according to the specific embodiment of the utility model and combining with the drawings, the utility model is further detailed, wherein

[0020] Figure 1 For the structure diagram of the knife switch with dynamic stabilizing structure in the preferred embodiment of the utility model Figure One ;

[0021] Figure 2 For the structure diagram of the knife switch with dynamic stabilizing structure in the preferred embodiment of the utility model Figure Two ;

[0022] Figure 3 For the partial structure diagram of the knife switch with dynamic stabilizing structure in the preferred embodiment of the utility model Figure One ;

[0023] Figure 4 For the partial structure diagram of the knife switch with dynamic stabilizing structure in the preferred embodiment of the utility model Figure Two .

[0024] Description of the Drawings: base one 1, static contact one 11, base two 2, static contact two 21, hook 22, blade one 3, cylindrical block one 31, triangular recess one 311, bolt 4, blade two 5, cylindrical block two 51, triangular recess two 511, rotary connecting piece 6, bolt one 61, lock nut one 62, spring one 63, clamping piece one 7, clamping piece two 8, connecting piece two 9, bolt two 91, lock nut two 92, spring two 93, operating handle 94, cylindrical block three 95, triangular convex part 951. DETAILED DESCRIPTION

[0025] The utility model is further explained in conjunction with the drawings and specific embodiment, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0026] Reference Figures 1-4As shown, the utility model discloses a knife switch with dynamic stabilizing structure, include: base one 1, it is equipped with static contact one 11 on it;Base two 2, it is equipped with static contact two 21 on it, the static contact two 21 is equipped with hooking 22;Blade one 3, with static contact one 11 rotatory connection, and blade one 3 and static contact one 11 contact, the blade one 3 with the connecting shaft of static contact one 11 as center rotation process realizes the contact or separation of static contact two 21;Bolt 4, the bolt 4 is inserted hooking 22 and blade one 3 is close to the end of static contact two 21 to realize the locking of blade one 3 and static contact two 21 after closing.

[0027] Specific, the hooking 22 is right angle shape, one right angle side of hooking 22 is connected with static contact two 21, the other right angle side of hooking 22 is used to pass through bolt 4. Bolt 4 is slender cylindrical rod shape, blade one 3 and static contact two 21 close after this time, blade one 3 and static contact two 21 contact, through bolt 4 inserts hooking 22 and blade one 3, thereby blade one 3 and hooking 22 are locked.

[0028] When the knife switch is double-gate switch, the knife switch further includes blade two 5, the blade two 5 is divided and is equipped with static contact one 11 on both sides of blade one 3, the blade two 5 is rotatory connected with static contact one 11, and blade two 5 and static contact one 11 contact. The blade two 5 is symmetric and parallel with blade one 3. Static contact one 11 and static contact two 21 are located in the gap between blade two 5 and blade one 3, and static contact one 11 and static contact two 21 are located at both ends of the gap between blade two 5 and blade one 3. Blade one 3 and blade two 5 are double knives of the same action, when blade one 3 and blade two 5 contact and close with static contact two 21, the simultaneous locking of blade one 3 and blade two 5 is realized through bolt 4.

[0029] Blade one 3, blade two 5 and static contact one 11 are provided with rotatory connecting piece 6, the rotatory connecting piece 6 includes bolt one 61, lock nut one 62 and spring one 63, the bolt one 61 is inserted through blade one 3, blade two 5 and static contact one 11, the lock nut one 62 is used to define the connection between bolt one 61 and blade one 3, blade two 5 and static contact one 11, the spring one 63 is sleeved on bolt one 61, and the spring one 63 is located between the head of bolt one 61 and blade one 3. By bolt one 61 through blade one 3, blade two 5 and static contact one 11, blade one 3 and blade two 5 form rotatory connection with static contact one 11, and bolt one 61 is the rotation axis, and in order to ensure that blade one 3 and blade two 5 contact with static contact one 11, the spring one 63 is arranged, and the blade one 3 and blade two 5 are pressed on the outer wall of static contact one 11 by the elastic force provided by the spring one 63.

[0030] In order to ensure that the blade one 3 and the blade two 5 have enough rigidity to smoothly close and open, the outer wall of the blade one 3 opposite to the spring one 63 is provided with the clamping piece one 7, which is used to increase the rigidity of the blade one 3. The clamping piece one 7 is arranged to prevent the blade one 3 from deforming when the spring one 63 is compressed and tightened by increasing the rigidity of the blade one 3. The outer wall of the blade two 5 opposite to the locking nut one 62 is provided with the clamping piece two 8, which is used to increase the rigidity of the blade two 5. The clamping piece two 8 is arranged to prevent the blade two 5 from deforming when the spring one 63 is compressed and tightened by increasing the rigidity of the blade two 5.

[0031] In the above structure, the connecting piece two 9 is arranged between the blade one 3 and the blade two 5 close to the static contact two 21. The connecting piece two 9 includes the bolt two 91, the locking nut two 92, the spring two 93 and the operating handle 94. The bolt two 91 penetrates the blade one 3 and the blade two 5, and the bolt two 91 is locked with the blade one 3 and the blade two 5 through the locking nut two 92. The spring two 93 is sleeved on the bolt two 91, and the spring two 93 is located between the head of the bolt two 91 and the blade one 3. The operating handle 94 is connected with the bolt two 91, and the operating handle 94 is located between the blade one 3 and the blade two 5.

[0032] The connecting relationship between the operating handle 94, the blade one 3 and the blade two 5 is that the cylindrical block one 31 is connected on the blade one 3, the cylindrical block two 51 is connected on the blade two 5, the bolt two 91 penetrates the cylindrical block one 31 and the cylindrical block two 51, and the spring two 93 is located between the head of the bolt two 91 and the end of the cylindrical block one 31. The cylindrical block three 95 is connected on the operating handle 94, the cylindrical block three 95 is sleeved on the bolt two 91, and the cylindrical block three 95 is located between the cylindrical block one 31 and the cylindrical block two 51. The two end faces of the cylindrical block three 95 opposite to the cylindrical block one 31 and the cylindrical block two 51 are provided with triangular protrusions 951, the end face of the cylindrical block one 31 opposite to the cylindrical block three 95 is provided with a triangular recess one 311, the end face of the cylindrical block two 51 opposite to the cylindrical block three 95 is provided with a triangular recess two 511, and the two triangular protrusions 951 are arranged in the triangular recess one 311 and the triangular recess two 511 respectively. The triangular protrusions 951 are arranged in the triangular recess one 311 and the triangular recess two 511, so as to realize the relative fixation of the cylindrical block three 95, keep the operating handle 94 stably between the blade one 3 and the blade two 5, and the operating handle 94 does not contact with the blade one 3 and the blade two 5.

[0033] Obviously, the above embodiments are only examples for clearly illustrating the present application and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be enumerated, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A knife switch having a dynamic stabilizing structure, characterized by The utility model relates to a knife switch, which comprises: a base one provided with a static contact one; a base two provided with a static contact two, the static contact two is provided with a hooking part; a blade one rotatably connected with the static contact one, and the blade one and the static contact one are in contact, the blade one rotates around the connecting shaft of the static contact one to realize contact or separation with the static contact two; a bolt, the bolt penetrates the hooking part and the blade one to realize locking after the blade one and the static contact two are closed.

2. The moving blade switch having a dynamic stabilizing structure according to claim 1, characterized in that: The knife switch further comprises a blade two, which is arranged on the two sides of the static contact one and rotatably connected with the static contact one.

3. The moving blade switch having a dynamic stabilizing structure according to claim 2, characterized in that: A rotating connecting piece is arranged between the blade one, the blade two and the static contact one, the rotating connecting piece comprises a bolt one, a locking nut one and a spring one, the bolt one penetrates the blade one, the blade two and the static contact one, the locking nut one is used to limit the connection between the bolt one and the blade one, the blade two and the static contact one, and the spring one is sleeved on the bolt one and located between the head of the bolt one and the blade one.

4. The moving blade switch having a dynamic stabilizing structure according to claim 3, characterized in that: A clamping piece one is arranged on the outer wall of the blade one opposite to the spring one, and the clamping piece one is used to increase the rigidity of the blade one.

5. The moving blade switch having a dynamic stabilizing structure according to claim 3, characterized in that: A clamping piece two is arranged on the outer wall of the blade two opposite to the locking nut one, and the clamping piece two is used to increase the rigidity of the blade two.

6. The moving blade switch having a dynamic stabilizing structure according to claim 1, characterized by: A connecting piece two is arranged between the blade one and the blade two, and the connecting piece two is arranged at the end of the blade one and the blade two close to the static contact two.

7. The moving blade switch having a dynamic stabilizing structure according to claim 6, characterized in that: The connecting piece two comprises a bolt two, a locking nut two, a spring two and an operating handle, the bolt two penetrates the blade one and the blade two, the bolt two is locked with the blade one and the blade two through the locking nut two, the spring two is sleeved on the bolt two and located between the head of the bolt two and the blade one, and the operating handle is connected with the bolt two and located between the blade one and the blade two.

8. The moving blade switch having a dynamic stabilizing structure according to claim 7, characterized in that: A cylindrical block one is connected to the blade one, a cylindrical block two is connected to the blade two, the bolt two penetrates the cylindrical block one and the cylindrical block two, and the spring two is located between the head of the bolt two and the end of the cylindrical block one.

9. The moving blade switch having a dynamic stabilizing structure according to claim 8, characterized in that: An operating handle is connected with a cylindrical block three, the cylindrical block three is sleeved on the bolt two and located between the cylindrical block one and the cylindrical block two.

10. The moving blade switch having a dynamic stabilizing structure according to claim 9, characterized in that: Triangular convex parts are arranged on the two end faces of the cylindrical block three opposite to the cylindrical block one and the cylindrical block two, a triangular groove one is arranged on the end face of the cylindrical block one opposite to the cylindrical block three, a triangular groove two is arranged on the end face of the cylindrical block two opposite to the cylindrical block three, and the two triangular convex parts are arranged in the triangular groove one and the triangular groove two respectively.

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