Damping low-abrasion butt joint type contact

Abstract

The utility model relates to a shock-absorbing low-wear butt joint type contact, which comprises contact main bodies and a contact base, and further comprises a connecting beam for connecting the two contact main bodies, and the connecting beam is connected with the contact main bodies through a connecting rod mechanism; the connecting beam is arranged to be a bow-shaped beam; limiting rods are arranged in the middles of the connecting beams and penetrate through the connecting beams in a sliding mode, springs are arranged on the outer walls of the limiting rods, and mounting plates are arranged at the two ends of the springs. One mounting plate is fixedly mounted with the connecting beam, and a control rod is arranged at the end part, far away from the connecting beam, of the other mounting plate. Shock absorption and energy absorption are carried out based on the connecting rod mechanism, point contact between the contacts and the contacts is changed into surface contact, the high current time is shortened, and the contact main body, the connecting beam, the control rod and the spring are protected; damping is achieved through the single spring, damping is further conducted in cooperation with the connecting rod mechanism, open circuit caused by poor contact is avoided, and use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of butt-jointed contacts, in particular to a shock-absorbing and low-wear butt-jointed contact. Background Art

[0002] Contact is one of the key components of switch electrical appliances. The main performance and life of the switch electrical appliances depend on the quality of the contact material. The material used to make the contact needs to have good conductivity. The docking contacts mainly include single-speed contacts, double-speed contacts and three-speed contacts.

[0003] Chinese utility model patent 202320917788.7 discloses a shock-absorbing and low-wear docking contact, including a contact body, a contact base is provided at the bottom of the contact body, a first limit ring is fixedly installed on the upper end surface of the contact body, a limit rod is fixedly installed on the upper end surface of the contact body, and a spring is sleeved on the outer wall of the limit rod. This shock-absorbing and low-wear docking contact, by respectively providing a first limit ring and a second limit ring on the contact body and the connecting rod, can limit the spring during use by the staff, and the limit rod is extended to the outside of the connecting rod so that the spring can be retracted during use by the staff. This design allows the staff to replace the spring individually when the spring is deformed during use, without having to replace the entire contact body, thereby reducing the waste of the contact body and saving the cost of use.

[0004] The above-mentioned butt-jointed contacts still have the following problems:

[0005] When the contacts are in contact, the point contact time is long, resulting in high current damaging the contacts, and the contacts cannot be quickly contacted with each other. In addition, more springs are used. When the height and angle between the two contact bases are different, the two springs work in reverse, generating stress on the connecting rod, further affecting the contact effect of the contacts. It is inconvenient to use and the cost of spring replacement is high. Summary of the invention

[0006] Technical problems to be solved by the utility model

[0007] When the contacts are in contact, the point contact time is long, resulting in high current damaging the contacts, and the contacts cannot be quickly contacted with each other. In addition, more springs are used. When the height and angle between the two contact bases are different, the two springs work in reverse, generating stress on the connecting rod, further affecting the contact effect of the contacts. It is inconvenient to use and the cost of spring replacement is high.

[0008] Technical solutions for solving technical problems

[0009] Further advantageous and in some cases inventive embodiments and developments of the invention are explained in the following description.

[0010] A shock-absorbing and low-wear docking contact, comprising a contact body and a contact base, characterized in that: it also comprises a connecting beam for connecting two contact bodies, wherein the connecting beam and the contact body are connected via a connecting rod mechanism;

[0011] The connecting beam is configured as a "bow" type beam;

[0012] A limit rod is arranged in the middle of the connecting beam, the limit rod penetrates the connecting beam and is slidably arranged, a spring is arranged on the outer wall of the limit rod, and mounting plates are arranged at both ends of the spring;

[0013] One of the mounting plates is fixedly mounted on the connecting beam, and a control rod is arranged at the end of the other mounting plate away from the connecting beam.

[0014] Preferably, the contact body and the contact base are both provided in pairs;

[0015] Each of the contact bases is provided with a contact point, and each of the end surfaces of the contact body is embedded with a groove matching the contact point.

[0016] Preferably, a limiting block is provided at the end of the limiting rod passing through the connecting beam.

[0017] Preferably, the connecting rod mechanism comprises:

[0018] A first connecting rod, mounted on the end surface of the contact body;

[0019] A sleeve, rotatably connected to the first connecting rod through a ball pair;

[0020] A second connecting rod is slidably disposed inside the sleeve;

[0021] The third connecting rod is fixedly mounted on the end surface of the connecting beam and is rotationally connected to the second connecting rod through a ball joint.

[0022] Preferably, the second connecting rod is slidably and position-limitingly connected to the sleeve.

[0023] Preferably, at least four connecting rod mechanisms are arranged between each of the contact bodies and the connecting beam.

[0024] Effect of utility model

[0025] 1. Use the connecting rod mechanism to absorb shock and energy, change the point contact between the contacts and contact points into surface contact, reduce the high current time, and protect the contact body, connecting beam, control rod and spring;

[0026] 2. Shock absorption is achieved through a single spring, and with the help of a connecting rod mechanism, further shock absorption is achieved to avoid circuit breakage caused by poor contact and improve safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following is a detailed description of the embodiments of the present invention according to the accompanying drawings. In the accompanying drawings:

[0028] Figure 1 It is a structural view of the utility model;

[0029] Figure 2 It is a side view of the utility model;

[0030] Figure 3 It is a cross-sectional view of the utility model.

[0031] Description of Reference Numerals

[0032] 1. Contact base; 101. Contact point; 2. Contact body; 201. Groove; 3. Connecting beam; 301. Mounting plate; 302. Spring; 303. Limit rod; 4. Control rod; 5. First connecting rod; 5-1. Ball pair; 501. Sleeve; 502. Second connecting rod; 503. Third connecting rod. DETAILED DESCRIPTION

[0033] Hereinafter, a vibration-damping and low-wear butting contact as one embodiment of the present invention will be described with reference to the accompanying drawings.

[0034] Please refer to Figure 1-Figure 3 As shown, a shock-absorbing and low-wear docking contact comprises a contact body 2, a contact base 1, and a connecting beam 3 for connecting two contact bodies 2;

[0035] The contact body 2 and the contact base 1 are both provided with two;

[0036] The upper end surface of the contact base 1 is provided with a contact point 101, and the bottom end surface of the contact body 2 is embedded with a groove 201 matching the contact point 101;

[0037] The connecting beam 3 is set as a "bow" type beam;

[0038] A limit rod 303 is provided at the "concave" in the middle of the connecting beam 3. The limit rod 303 runs through the connecting beam 3. A spring 302 is provided on the outer wall of the limit rod 303. Mounting plates 301 are provided at both ends of the spring 302.

[0039] One mounting plate 301 is fixedly mounted on the connecting beam 3, and a control rod 4 is disposed at the end of the other mounting plate 301 away from the connecting beam 3;

[0040] Specifically, the limiting rod 303 passes through the end of the connecting beam 3 to set a limiting block;

[0041] More specifically, the limit block is used to prevent the limit rod 303 from falling out of the connecting beam 3;

[0042] The contact body 2 is connected to the connecting beam 3 through a connecting rod mechanism;

[0043] The connecting rod mechanism includes:

[0044] A first connecting rod 5 is mounted on the end surface of the contact body 2;

[0045] The sleeve 501 is rotatably connected to the first connecting rod 5 through the ball pair 5-1;

[0046] The second connecting rod 502 slides and is limited inside the sleeve 501;

[0047] The third connecting rod 503 is fixedly mounted on the end surface of the connecting beam 3 and is rotationally connected to the second connecting rod 502 via a ball joint 5-1;

[0048] At least four connecting rod mechanisms are arranged between each contact body 2 and the connecting beam 3;

[0049] During use, several connecting rod mechanisms cooperate to realize multi-degree-of-freedom swing between the contact body 2 and the connecting beam 3, so that when the contact body 2 contacts the contact point 101 on the contact base 1, point contact between the contact and the contact point 101 can be avoided, and surface contact can be quickly achieved to avoid excessive current from damaging the contact point 101 and the contact;

[0050] Normally used status

[0051] The staff installs the docking contact included in the device at the working position, and changes the vertical position of the control rod 4 to change the relative position of the contact body 2, the contact base 1 and the contact point 101 to achieve contact and disconnection;

[0052] Shock absorption

[0053] Based on the arrangement of the spring 302 on the connecting beam 3, the contact between the contact body 2 and the contact base 1 can be damped to reduce wear;

[0054] Wear reduction function

[0055] Based on the setting of the connecting rod mechanism, the groove 201 at the bottom of the contact body 2 can be quickly contacted with the contact point 101 on the contact base 1, thereby avoiding damage to the contact and the connecting beam 3 caused by excessive current;

[0056] Compared with the prior art, the utility model has the following characteristics:

[0057] 1. The connecting rod mechanism is used to absorb shock and energy, and the point contact between the contact and the contact point 101 is changed to surface contact, so as to reduce the high current time and protect the contact body 2, the connecting beam 3, the control rod 4 and the spring 302;

[0058] 2. Shock reduction is achieved through a single spring 302, and with the help of a connecting rod mechanism, further shock reduction is achieved to avoid circuit breakage caused by poor contact and improve safety in use.

[0059] The present invention is not limited to the embodiment, and various modifications can be made without departing from the spirit of the present invention.

Claims

1. A shock-absorbing and low-wear docking contact, comprising a contact body (2) and a contact base (1), characterized in that: It also comprises a connecting beam (3) for connecting the two contact bodies (2), wherein the connecting beam (3) and the contact bodies (2) are connected via a connecting rod mechanism; The connecting beam (3) is configured as a "bow" type beam; A limiting rod (303) is arranged in the middle of the connecting beam (3), the limiting rod (303) penetrates the connecting beam (3) and is slidably arranged, a spring (302) is arranged on the outer wall of the limiting rod (303), and mounting plates (301) are arranged at both ends of the spring (302); One of the mounting plates (301) is fixedly mounted on the connecting beam (3), and a control rod (4) is provided at the end of the other mounting plate (301) away from the connecting beam (3).

2. A shock-absorbing and low-wear docking contact according to claim 1, characterized in that: The contact body (2) and the contact base (1) are both provided in pairs; Each of the contact bases (1) is provided with a contact point (101), and the end surface of each of the contact bodies (2) is embedded with a groove (201) matching the contact point (101).

3. The shock-absorbing and low-wear docking contact according to claim 1, characterized in that: The limiting rod (303) passes through the end of the connecting beam (3) to provide a limiting block.

4. The shock-absorbing and low-wear docking contact according to claim 1, characterized in that: The connecting rod mechanism comprises: A first connecting rod (5) is mounted on the end surface of the contact body (2); A sleeve (501) is rotatably connected to the first connecting rod (5) via a ball pair (5-1); A second connecting rod (502) is slidably disposed inside the sleeve (501); The third connecting rod (503) is fixedly mounted on the end surface of the connecting beam (3) and is rotationally connected to the second connecting rod (502) via a ball joint (5-1).

5. A shock-absorbing and low-wear docking contact according to claim 4, characterized in that: The second connecting rod (502) is slidably and position-limitingly connected to the sleeve (501).

6. A shock-absorbing and low-wear docking contact according to claim 4, characterized in that: At least four connecting rod mechanisms are arranged between each contact body (2) and the connecting beam (3).

Images