CN219144608U

CN219144608U - Electric connector for charging butt joint

Info

Publication number: CN219144608U
Application number: CN202222933067.3U
Authority: CN
Inventors: 蒋波; 徐利雄; 陈龙龙
Original assignee: Guochuang Mobile Energy Innovation Center Jiangsu Co Ltd
Current assignee: Guochuang Mobile Energy Innovation Center Jiangsu Co Ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-06-06
Anticipated expiration: 2032-11-03
Also published as: WO2024093904A1

Abstract

The utility model relates to the technical field of electric connectors, in particular to an electric connector for charging butt joint, which comprises a shell, a fixed seat, an electric contact and an elastic piece, wherein the fixed seat is electrically connected with the electric contact, the elastic piece is used for ejecting the head part of the electric contact out of the shell, and a guide structure for sliding and guiding the electric contact is arranged in the shell.

Description

Electric connector for charging butt joint

Technical Field

The utility model relates to the technical field of electric connectors, in particular to an electric connector for charging butt joint.

Background

In the field of automatic charging of special vehicles, ground-end power supply equipment is in butt joint charging connection with a power receiving end copper bar of a vehicle end through a tail end electric connector. Because the electric connector and the copper bar can be safely charged after reaching a certain butting pressure, the electric connector is designed into an elastic mechanism. The electrical contact of the current electrical connector is elastically connected to the fixing seat through a spiral compression spring, and the copper braid is fixedly connected to the electrical contact and the fixing seat. The shell is internally coated with a fixed seat, an electric contact, a spiral pressure spring and a copper braid belt. The electric contact can do sliding motion along the inner wall of the shell, and the spiral pressure spring and the copper braid belt do synchronous telescopic motion along with the electric contact. The electrical connector may be secured to a conductive member, such as a copper bar, by a threaded portion of a holder. The current is conducted to the copper bar at the vehicle end through the fixing seat, the copper braid and the electrical contact.

Defects or deficiencies of the prior art: the electrical connector has a major drawback: because the electric contact is completely fixed on the spiral pressure spring to realize elastic connection, the radial displacement error of the spiral pressure spring is large, so that the electric contact can radially deviate, and the radial deviation of the electric contact in the axial compression process can cause the outer circular surface of the electric contact and the inner wall of the shell to generate larger friction force so as to be blocked (particularly, the electric connector is more obvious when a plurality of electric connectors are in butt joint), thereby greatly influencing normal charging operation. In addition, the electric connector body is a cylindrical surface, a spanner-free clamping position is installed, and the electric connector is difficult to fixedly install.

Disclosure of Invention

In order to solve the problem that the radial offset generated in the axial compression process of the electrical contact in the prior art can cause larger friction force to be generated between the outer circular surface of the electrical contact and the inner wall of the shell so as to cause clamping stagnation, the utility model provides the electrical connector for charging butt joint, which reduces the radial offset of the electrical contact, thereby reducing the probability of the clamping stagnation of the electrical contact.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides an electric connector for charging butt joint, includes casing, fixing base, electric contact and elastic component, fixing base and electric contact electricity be connected, the elastic component be used for ejecting electric contact's head the casing, the casing in be equipped with the guide structure that is used for electric contact sliding guide.

Further, a gap is formed between the electric contact and the shell along the sliding direction perpendicular to the electric contact. The method is equivalent to isolating the electric contact from the shell, and avoids the clamping stagnation phenomenon between the electric contact and the shell.

Further, the guiding structure comprises rolling bodies which are contacted with the electric contacts.

Further, the guiding structure comprises a bearing seat arranged in the shell, and a ball sliding sleeve is arranged between the electric contact and the bearing seat. Rolling friction force is formed between the ball sliding sleeve and the electric contact, so that the movement of the electric contact is smoother;

further, the fixing seat is provided with a spring contact finger, and the electric contact is contacted with the spring contact finger.

Further, the fixing seat is detachably and fixedly connected with the shell. The detachable connection mode is adopted, so that the spring contact finger can be conveniently replaced.

Further, a first step is arranged in the shell, and the fixing seat supports the bearing seat on the step surface of the first step.

Further, the electric contact ejector further comprises a limiting structure for limiting the ejected length of the electric contact, the limiting structure comprises a convex ring arranged on the electric contact, and the shell is provided with a second step for clamping the convex ring.

Further, the elastic piece comprises a rectangular spring, and the rectangular spring is arranged between the electric contact and the bearing seat.

Further, the shell is provided with a notch which is convenient for clamping by a tool.

The beneficial effects are that:

(1) According to the electric connector for charging butt joint, the guide structure is added, the electric contact is guided by the guide structure to axially slide and compress, so that radial offset is reduced, and the probability of jamming of the electric contact is reduced;

(2) A gap is formed between the electric contact and the shell along the sliding direction perpendicular to the electric contact, and if a cylindrical electric contact is adopted, the outer circular surface of the electric contact is not contacted with the inner wall of the shell any more in the sliding process of the electric contact, which is equivalent to isolating the electric contact from the shell, so that the clamping stagnation phenomenon between the electric contact and the shell is avoided;

(3) The guiding structure comprises rolling bodies, and the rolling friction force in the sliding compression process of the electric contact is far smaller than the previous sliding friction force, so that the movement of the electric contact in the compression process is smoother, the resistance is small, and the clamping stagnation phenomenon between the electric contact and the shell is further avoided;

(4) The copper braid is cancelled, and the contact finger spring and the contact pin structure are adopted, so that the simplicity of the manufacturing and assembling processes of the product and the reliability in the use process are improved, and the fixed seat is detachably and fixedly connected with the shell, so that the contact finger spring is convenient to maintain and replace;

(5) The bearing seat is abutted to the step surface of the first step through the fixing seat, and then the fixing seat is fixed with the shell, so that the detachable fixing is realized, and the whole structure is more compact.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of an electrical connector for charging docking according to the present utility model;

FIG. 2 is a schematic top view of an electrical connector for charging docking according to the present utility model;

fig. 3 is a cross-sectional view taken along A-A in fig. 2.

The electric contact comprises a first electric contact, a second electric contact, a housing, a first step, a second step, a groove, a fixed seat, a contact, a rectangular spring, a spring contact finger, a bearing seat, a ball sliding sleeve and a ball sliding sleeve, wherein the first electric contact, the second electric contact, the housing, the first step, the second step, the groove, the fixed seat, the contact, the rectangular spring, the spring contact finger, the bearing seat and the ball sliding sleeve are arranged in sequence, and the ball sliding sleeve is arranged in sequence.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

Fig. 1 to 3 are schematic views of an electrical connector for charging and docking according to the present utility model, which comprises a housing 2, a fixing base 3, an electrical contact 1, and an elastic member, wherein the fixing base 3 is electrically connected with the electrical contact 1, the elastic member is used for ejecting the head of the electrical contact 1 out of the housing 2, and a guiding structure for guiding the electrical contact 1 in a sliding manner is arranged in the housing 2. Further, a gap is provided between the electrical contact 1 and the housing 2 in a direction perpendicular to the sliding direction of the electrical contact 1. The utility model adopts the cylindrical electric contact 1, so that the outer circular surface of the electric contact 1 is not contacted with the inner wall of the shell 2 any more in the sliding process of the electric contact 1, which is equivalent to isolating the electric contact from the shell, thereby avoiding the clamping stagnation phenomenon between the electric contact 1 and the shell 2.

The guiding structure may take the form of a guiding block or the like, and as a preferred form of the utility model, the guiding structure comprises rolling bodies in contact with the electrical contacts 1, and as an embodiment, the guiding structure comprises bearing blocks 7 and the electrical contacts 1 mounted in the housing 2, and ball sliding sleeves 8 are arranged between the bearing blocks 7. The ball sliding sleeve 8 is arranged in the inner cylindrical surface of the bearing seat 7, the fixed seat 3 is provided with a spring contact finger 6, and the electric contact 1 is contacted with the spring contact finger 6. The spring contact finger 6 is arranged in the inner cavity of the fixed seat 3, the electric contact 1 is provided with a contact pin, and the contact pin is arranged in the ball sliding sleeve 8 and the spring contact finger 6 in a penetrating way. The ball sliding sleeve 8 plays roles of radial support and axial guide, and prevents the electric contact 1 from being blocked with the inner wall of the shell 2 in the sliding compression process, thereby affecting the charging operation. The front end of the electrical contact 1 is provided with a contact 4 for effectively butting with a car end copper bar. The current is conducted to the copper bar at the vehicle end through the fixing seat 3, the spring contact finger 6, the electric contact 1 and the contact 4, and charging operation is carried out.

The fixed seat 3 is fixedly connected with the shell 2. The fixing seat 3 and the shell 2 can be welded into an integral piece, and preferably, the fixing seat 3 and the shell 2 can be detachably and fixedly connected, and the fixing seat 3 and the shell 2 can be connected by a screw, so that the spring contact finger 6 can be conveniently replaced. A first step 21 is arranged in the shell 2, and the bearing seat 7 is abutted against the step surface of the first step 21 by the fixing seat 3. Specifically, the bearing seat 7 and the fixing seat 3 are coaxially installed in the inner chamber of the housing 2, respectively, and the bearing seat 7 is axially positioned by means of the first step 21 and the fixing seat 3.

The electrical connector of the present utility model further comprises a limiting structure for limiting the length of the electrical contact 1 that is ejected. The limiting structure comprises a convex ring arranged on the electric contact 1, and a second step 22 for clamping the convex ring is arranged on the shell 2. The elastic member comprises a rectangular spring 5, the rectangular spring 5 being interposed between the electrical contact 1 and the bearing seat 7. The rectangular spring 5 is inserted into the annular space formed by the bearing seat 7 and the housing 2, and the pre-pressure of the rectangular spring 5 presses the electrical contact 1 against the step surface of the second step 22 of the housing 2.

The shell 2 is provided with the notch 23 which is convenient for clamping tools, the notch 23 is symmetrically arranged on two sides of the shell 2, and the bottom surfaces of the two notches 23 are parallel to each other, so that clamping positions are provided for tools such as a spanner, and the installation is convenient.

The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.

Claims

1. The electric connector for charging butt joint is characterized by comprising a shell (2), a fixing seat (3), an electric contact (1) and an elastic piece, wherein the fixing seat (3) is electrically connected with the electric contact (1), the elastic piece is used for ejecting the head of the electric contact (1) out of the shell (2), and a guide structure for sliding guide of the electric contact (1) is arranged in the shell (2).

2. An electrical connector for charging docking as recited in claim 1, wherein: and a gap is arranged between the electric contact (1) and the shell (2) along the sliding direction perpendicular to the electric contact (1).

3. An electrical connector for charging docking according to claim 1 or 2, characterized in that: the guiding structure comprises rolling bodies which are contacted with the electric contacts (1).

4. An electrical connector for charging docking as recited in claim 3, wherein: the guiding structure comprises a bearing seat (7) arranged in the shell (2), and a ball sliding sleeve (8) is arranged between the electric contact (1) and the bearing seat (7).

5. An electrical connector for charging docking as recited in claim 3, wherein: the fixed seat (3) is provided with a spring contact finger (6), and the electric contact (1) is contacted with the spring contact finger (6).

6. An electrical connector for charging docking as recited in claim 5, wherein: the fixing seat (3) is detachably and fixedly connected with the shell (2).

7. An electrical connector for charging docking as recited in claim 5, wherein: the casing (2) in be equipped with first step (21), fixing base (3) with bearing frame (7) support on the step face of first step (21).

8. An electrical connector for charging docking as recited in claim 1, wherein: the electric contact (1) is characterized by further comprising a limiting structure for limiting the ejected length of the electric contact (1), wherein the limiting structure comprises a convex ring arranged on the electric contact (1), and a second step (22) for clamping the convex ring is arranged on the shell (2).

9. An electrical connector for charging docking as recited in claim 1, wherein: the elastic piece comprises a rectangular spring (5), and the rectangular spring (5) is arranged between the electric contact (1) and the bearing seat (7).

10. An electrical connector for charging docking as recited in claim 1, wherein: the shell (2) is provided with a notch (23) which is convenient for clamping tools.