Contact device for novel direct current contactor
By introducing an auxiliary fixing mechanism into the contact device of the DC contactor, the problem of poor contact in the normally open state of the switch is solved, thereby improving the stability and service life of the device.
Patent Information
- Application Number
- CN202423215207.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The contact devices of existing DC contactors lack a structure to prevent poor contact when the switch is normally open, which leads to circuit failure and contact wear, affecting service life.
An auxiliary fixing mechanism is adopted, which, through the cooperation of a slide bar and a spring, ensures that the L-shaped rotating block is in close contact with the normally open end when the contact is normally open, and uses the elastic force to prevent poor contact.
It effectively prevents poor contact of contacts under factors such as vibration and oxidation, and improves the stability and service life of the contact device.
Smart Images
Figure CN223693053U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model mainly relates to the technical field of direct current contactor, specifically is contact device for new type direct current contactor. BACKGROUND
[0002] The contact device of the direct current contactor is a core component for controlling the on-off of the circuit in the direct current contactor, and the structural design and material selection thereof play a crucial role in ensuring the stable conduction of the direct current circuit, bearing appropriate current, resisting arc, and maintaining the efficient and reliable operation of the entire contactor.
[0003] The contact device of the existing direct current contactor lacks a structure specifically designed to prevent poor contact in the open state of the switch. Under the influence of factors such as vibration and oxidation, poor contact between the contacts may occur during long-term use or under complex working conditions, leading to circuit failure. At the same time, abnormal wear and electric sparks may occur between the contacts, causing an increase in contact resistance and heat, which in turn accelerates the ablation and oxidation of the contacts, reducing their service life. UTILITY MODEL CONTENTS
[0004] The utility model discloses a contact device for a new type of direct current contactor to solve the problem of poor contact in the open state of the switch in the existing direct current contactor, which may lead to circuit failure.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] The contact device for the new type of direct current contactor comprises a shell, a normally open end, a common end and a normally closed end are arranged at the bottom end of the shell at equal intervals, the normally open end, the common end and the normally closed end are all arranged through the inside of the shell, an L-shaped turning block is arranged at the upper end of the common end and matched with the normally open end and the normally closed end, a push button switch is arranged at the upper end of the shell, a transmission rod is arranged at the lower end of the push button switch, the lower end of the transmission rod is slidably connected to one side of the upper end of the L-shaped turning block, an auxiliary fixing mechanism is arranged on one side of the L-shaped turning block, the auxiliary fixing mechanism comprises two slide rods arranged on both sides of the L-shaped turning block, a limiting groove is formed on one side of each of the two slide rods, two symmetrically arranged stop rods are slidably installed in the two limiting grooves, respectively, and a second spring is fixedly installed between the upper end of each of the two stop rods and the upper end inner wall of the corresponding limiting groove.
[0007] As a further description of the above technical scheme, the two limiting grooves are fixedly installed with fixed rods, the two fixed rods are penetrated through the blocking rods and are slidably connected with the two blocking rods respectively, the two second springs are slidably sleeved on the two fixed rods respectively, the upper ends of the two sliding rods are penetrated through the shell and are slidably connected with the shell, the upper ends of the two sliding rods are fixedly connected with a U-shaped top plate, the U-shaped top plate is rotatably connected with a second threaded rod, the second threaded rod is penetrated through the U-shaped top plate and is threadedly connected with the shell, the upper end of the second threaded rod is fixedly connected with a rotating knob, the lower surface of the U-shaped top plate is provided with a circular groove, and the outer surface of the second threaded rod is fixedly installed with a circular limiting plate which is rotatably installed in the circular groove.
[0008] As a further description of the above technical scheme, the two limiting grooves are fixedly installed with fixed rods, the two fixed rods are penetrated through the blocking rods and are slidably connected with the two blocking rods respectively, the two second springs are slidably sleeved on the two fixed rods respectively, the upper ends of the two sliding rods are penetrated through the shell and are slidably connected with the shell, the upper ends of the two sliding rods are fixedly connected with a U-shaped top plate, the U-shaped top plate is rotatably connected with a second threaded rod, the second threaded rod is penetrated through the U-shaped top plate and is threadedly connected with the shell, the upper end of the second threaded rod is fixedly connected with a rotating knob, the lower surface of the U-shaped top plate is provided with a circular groove, and the outer surface of the second threaded rod is fixedly installed with a circular limiting plate which is rotatably installed in the circular groove.
[0009] As a further description of the above technical scheme, the U-shaped top plate is fixedly connected with two limiting rods at two ends away from the two sliding rods, and the two limiting rods are penetrated through the shell and are slidably connected with the shell.
[0010] As a further description of the above technical scheme, the U-shaped top plate is fixedly connected with two limiting rods at two ends away from the two sliding rods, and the two limiting rods are penetrated through the shell and are slidably connected with the shell.
[0011] As a further description of the above technical scheme, the upper end of the shell is provided with an accommodating hole, rotating rods are rotatably installed on the two sides of the inner wall of the accommodating hole, the rotating rods are penetrated through the button switch and are fixedly connected with the button switch, the lower end of the button switch is fixedly connected with an inclined block, the inclined surface end of the inclined block is fixedly connected with a sleeve, the transmission rod is slidably installed in the sleeve, and the first spring is fixedly installed between the transmission rod and the inner wall of the sleeve.
[0012] As a further description of the above technical scheme, the upper end of the shell is provided with a protective cover, one side of the protective cover is hinged with the shell, the other side of the protective cover is fixedly connected with a clamping block, a circular hole is formed in the clamping block, a clamping hole is formed in the shell at a position corresponding to the clamping block, a first threaded rod is rotatably installed in the clamping hole, the first threaded rod is clamped and matched with the circular hole in the clamping block, and one end of the first threaded rod away from the clamping hole is penetrated through the shell and is fixedly connected with a rotating knob.
[0013] Compared with the prior art, the utility model has the advantages of:
[0014] The utility model discloses a auxiliary fixing mechanism is adopted, under the normally open state of contact, drive two slide rods to move downward in the casing, through the cooperation of two baffle poles and two second springs, under the elastic force of two second springs, make two baffle poles promote L type rotation block lower end more closely with normally open end upper end contact, prevent the contact from appearing the phenomenon of bad contact among in long -time use because of vibration, oxidation and other factors. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the whole structure schematic diagram of the utility model;
[0016] Figure 2 It is the section view of casing internal structure of the utility model;
[0017] Figure 3 It is the structure schematic diagram of auxiliary fixing mechanism of the utility model;
[0018] Figure 4 It is Figure 2 It is the enlarged view of structure in A place of the utility model.
[0019] Sign significance: 10, casing;101, containing hole;102, clamping hole;103, rotation rod;11, public end;111, normally closed end;112, normally open end;113, containing groove;114, round rod;12, static contact;13, L type rotation block;131, dynamic contact;14, button switch;15, inclined block;151, sleeve;16, transmission rod;17, first spring;18, protective cover;181, clamping block;19, first threaded rod;191, knob;
[0020] 20, slide rod;201, limit slot;21, fixed rod;22, baffle pole;23, second spring;24, U type roof;25, second threaded rod;251, round limit plate;252, rotation knob;26, limit rod;27, flexible wire;28, pilot lamp. DETAILED DESCRIPTION
[0021] In order to facilitate understanding the utility model, below will refer to relevant drawings and the utility model is carried out more comprehensive description, and the drawings have given several embodiments of the utility model, but the utility model can be realized through different forms, and is not limited to the embodiment described in the text, on the contrary, provides these embodiments are to make the content disclosed by the utility model more thorough and comprehensive.
[0022] Please refer to the drawings Figures 1-4As shown, the utility model provides a technical scheme: contact device for novel direct current contactor, including casing 10, the bottom end of casing 10 is equipped with normally open end 111, common end 11 and normally closed end 112 at equal intervals, normally open end 111, common end 11 and normally closed end 112 all are arranged in the inside of casing 10 and are penetrated, the upper end of common end 11 is equipped with the L type swivel block 13 that cooperates with normally open end 111 and normally closed end 112, the upper end of casing 10 is equipped with button switch 14, the lower end of button switch 14 is equipped with transmission rod 16, the lower end of transmission rod 16 is slidably abuts on the upper end one side of L type swivel block 13, one side of L type swivel block 13 is equipped with auxiliary fixing mechanism, auxiliary fixing mechanism includes the two slide bars 20 of setting at the both sides of L type swivel block 13, the side of the mutual approach of two slide bars 20 is all equipped with limit slot 201, two limit slots 201 are slidably installed two symmetrically arranged stop bars 22 respectively, the upper end of two stop bars 22 and the upper end inner wall of two limit slots 201 are all fixedly installed with second spring 23, by driving two slide bars 20 to move downwards in casing 10, the cooperation of two stop bars 22 and two second springs 23, under the elastic force of two second springs 23, make two stop bars 22 promote L type swivel block 13 lower end more closely and normally open end 112 upper end contact.
[0023] In an embodiment of the utility model, as shown in Figure 2 、 Figure 3 and Figure 4 As shown, two limit slots 201 are all fixedly installed with fixed rod 21, two fixed rods 21 all are penetrated stop bar 22 and are slidably connected with two stop bars 22 respectively, two second springs 23 are slidably sleeved on two fixed rods 21 respectively, the upper end of two slide bars 20 is penetrated casing 10 and is slidably connected with casing 10, the upper end of two slide bars 20 is fixedly connected with U type top plate 24, U type top plate 24 is rotatably connected with second screw rod 25, second screw rod 25 is penetrated U type top plate 24 and is threadedly connected with casing 10, the upper end of second screw rod 25 is fixedly connected with knob 252, the lower surface of U type top plate 24 is equipped with round groove, the outer surface of second screw rod 25 is fixedly installed with circular limit plate 251, circular limit plate 251 is rotatably installed in round groove, by the cooperation of circular limit plate 251 and knob 252, when second screw rod 25 rotates and rises in casing 10, can drive circular limit plate 251 vertically rise.
[0024] Specifically, in the open state of the contact device, the second threaded rod 25 is rotated by rotating the knob 252 manually, and under the blocking of the circular limiting plate 251 and the knob 252, the U-shaped top plate 24 can be moved vertically on the shell 10, further driving the two sliding rods 20 to move downward in the shell 10, and under the elastic force of the two second springs 23, the two stop rods 22 are pushed to make the lower end of the L-shaped block 13 contact more closely with the upper end of the normally open end 112, so as to prevent the contact from being poor due to vibration, oxidation and other factors in long-term use.
[0025] In an embodiment of the utility model, as shown in Figure 2 and Figure 3 Two limiting rods 26 are fixedly connected to the two ends of the side of the U-shaped top plate 24 away from the two sliding rods 20, and the two limiting rods 26 penetrate through the shell 10 and are slidably connected with the shell 10, so as to limit the position of the U-shaped top plate 24 and improve the stability of the U-shaped top plate 24 when it is raised or lowered.
[0026] In an embodiment of the utility model, as shown in Figure 3 A indicating lamp 28 is fixedly connected to one side of the shell 10, and a flexible wire 27 is fixedly connected between the indicating lamp 28 and one of the sliding rods 20, and the flexible wire 27 penetrates through the shell 10, so as to prompt that the lower end of the L-shaped block 13 is always in contact with the upper end of the normally open end 112 when the contact device is open.
[0027] In an embodiment of the utility model, as shown in Figure 2 and Figure 3 The upper end of the normally open end 111 and the upper end of the normally closed end 112 are fixedly installed with static contacts 12, and the upper end of the common end 11 is provided with a receiving groove 113 in which a round rod 114 is fixedly installed, the round rod 114 penetrates through the L-shaped block 13 and is rotatably connected with the L-shaped block 13, and the lower end of the L-shaped block 13 is fixedly connected with moving contacts 131 on both sides, when the moving contacts 131 at the lower end of the L-shaped block 13 are in contact with the static contacts 12 at the upper end of the normally open end 112, the contact device is in an open state, and when the moving contacts 131 at the lower end of the L-shaped block 13 are in contact with the static contacts 12 at the upper end of the normally closed end 111, the contact device is in a closed state.
[0028] In an embodiment of the utility model, as shown in Figure 2As shown, the upper end of the shell 10 is provided with a receiving hole 101, the inner wall of the receiving hole 101 is rotatably provided with a rotating rod 103, the rotating rod 103 penetrates the button switch 14 and is fixedly connected with the button switch 14, the lower end of the button switch 14 is fixedly connected with an inclined block 15, the inclined surface end of the inclined block 15 is fixedly connected with a sleeve 151, a transmission rod 16 is slidingly installed in the sleeve 151, a first spring 17 is fixedly installed between the transmission rod 16 and the inner wall of the sleeve 151, when the button switch 14 is pressed, the transmission rod 16 extrudes the first spring 17 to slide on the two ends of the L-shaped rotating block 13, and the switch state of the contact device can be switched.
[0029] In an embodiment of the present application, as shown in Figure 1 and Figure 2 As shown, the upper end of the shell 10 is provided with a protective cover 18, one side of the protective cover 18 is hingedly connected with the shell 10, the other side of the protective cover 18 is fixedly connected with a clamping block 181, a circular hole is formed in the clamping block 181, a clamping hole 102 is formed in the upper end of the shell 10 corresponding to the clamping block 181, a first threaded rod 19 is rotatably installed in the clamping hole 102, the first threaded rod 19 is clamped and matched with the circular hole in the clamping block 181, one end of the first threaded rod 19 away from the clamping hole 102 penetrates the shell 10 and is fixedly connected with a knob 191, and the protective cover 18 is convenient for protecting the button switch 14.
[0030] The above is an exemplary description of the present application in combination with the drawings, and obviously, the specific implementation of the present application is not limited by the above manner, as long as the method concept and technical scheme of the present application are adopted for such non-essential improvement, or the concept and technical scheme of the present application are directly applied to other occasions without improvement, which are all within the protection scope of the present application.
Claims
1. Contact arrangement for a new type of DC contactor, comprising a housing (10), characterized in that The bottom end of the housing (10) is provided with a normally open end (111), a common end (11), and a normally closed end (112) at equal intervals. The normally open end (111), the common end (11), and the normally closed end (112) are all disposed inside the housing (10). The upper end of the common end (11) is provided with an L-shaped rotating block (13) that cooperates with the normally open end (111) and the normally closed end (112). The upper end of the housing (10) is provided with a push-button switch (14). The lower end of the push-button switch (14) is provided with a transmission rod (16). The lower end slides against the upper side of the L-shaped rotating block (13). An auxiliary fixing mechanism is provided on one side of the L-shaped rotating block (13). The auxiliary fixing mechanism includes two sliding rods (20) on both sides of the L-shaped rotating block (13). Limiting grooves (201) are opened on the side of the two sliding rods (20) that are close to each other. Two symmetrically arranged stop rods (22) are slidably installed in the two limiting grooves (201). A second spring (23) is fixedly installed between the upper end of the two stop rods (22) and the upper inner wall of the two limiting grooves (201).
2. Contact arrangement for a new type of DC contactor according to claim 1, characterized in that Two fixing rods (21) are fixedly installed in the two limiting grooves (201). The two fixing rods (21) pass through the stop rods (22) and are slidably connected to the two stop rods (22) respectively. Two second springs (23) are slidably sleeved on the two fixing rods (21) respectively. The upper ends of the two sliding rods (20) pass through the housing (10) respectively and are slidably connected to the housing (10). The upper ends of the two sliding rods (20) are fixedly connected to a U-shaped top plate (24). The U-shaped top plate (24) A second threaded rod (25) is rotatably connected to the top of the U-shaped top plate (24) and the housing (10), and is threadedly connected to the housing (10). A knob (252) is fixedly connected to the upper end of the second threaded rod (25). A circular groove is provided on the lower surface of the U-shaped top plate (24). A circular limiting plate (251) is fixedly installed on the outer surface of the second threaded rod (25), and the circular limiting plate (251) is rotatably installed in the circular groove.
3. Contact arrangement for a new type of DC contactor according to claim 2, characterized in that Two limiting rods (26) are fixedly connected to the two ends of the side of the U-shaped top plate (24) away from the two sliding rods (20). Both limiting rods (26) penetrate the shell (10) and are slidably connected to the shell (10).
4. The contact arrangement for a new type of DC contactor according to claim 1, characterized in that, An indicator light (28) is fixedly connected to one side of the housing (10). A flexible wire (27) is fixedly connected between the indicator light (28) and one of the slide rods (20). The flexible wire (27) passes through the housing (10).
5. The contact arrangement for a new type of DC contactor according to claim 1, characterized in that, The normally open end (111) and normally closed end (112) are both fixedly equipped with stationary contacts (12). The common end (11) is provided with a receiving groove (113) at its upper end. A round rod (114) is fixedly installed in the receiving groove (113). The round rod (114) passes through the L-shaped rotating block (13) and is rotatably connected to the L-shaped rotating block (13). Moving contacts (131) are fixedly connected to both sides of the lower end of the L-shaped rotating block (13).
6. The contact arrangement for a new type of DC contactor according to claim 1, characterized in that, The upper end of the shell (10) is provided with a containing hole (101), the both sides of the inner wall of the containing hole (101) are rotatably provided with a rotating rod (103), the rotating rod (103) penetrates the button switch (14) and is fixedly connected with the button switch (14), the lower end of the button switch (14) is fixedly connected with an inclined block (15), the inclined surface end of the inclined block (15) is fixedly connected with a sleeve (151), the transmission rod (16) is slidably installed in the sleeve (151), and the first spring (17) is fixedly installed between the transmission rod (16) and the inner wall of the sleeve (151).
7. The contact arrangement for a new type of DC contactor according to claim 1, characterized in that, The upper end of the shell (10) is provided with a protective cover (18), one side of the protective cover (18) is hingedly connected with the shell (10), the other side of the protective cover (18) is fixedly connected with a clamping block (181), a circular hole is formed in the clamping block (181), a clamping hole (102) is formed in the upper end of the shell (10) and corresponds to the clamping block (181), a first threaded rod (19) is rotatably installed in the clamping hole (102), the first threaded rod (19) is clamped and matched with the circular hole in the clamping block (181), and the end, away from the clamping hole (102), of the first threaded rod (19) penetrates the shell (10) and is fixedly connected with a knob (191).