DC connector

Abstract

The utility model relates to the technical field of connecting plugs, and provides a DC connector which comprises a first connector and a second connector. The first connector is connected with the second connector in an inserted mode. A protruding part is arranged on the inner wall of the first connector. The second connector is provided with a fixing sleeve, the diameter of the fixing sleeve is smaller than the inner diameter of the first connector, and the fixing sleeve is connected with the first connector in an inserted mode. The fixing sleeve is provided with a clamping groove, and when the clamping groove is in butt joint with the protruding part, the first plug and the second plug are connected in an inserted mode, and the protruding part synchronously moves into the clamping groove and is connected with the clamping groove in a clamped mode. The method has the effect of improving the connection stability.

Description

Technical Field

[0001] The present application relates to the technical field of plug connectors, and in particular to a DC connector. Background Art

[0002] A DC connector typically includes a male connector and a female connector. The male connector and the female connector are connected. However, if they are accidentally touched after connection, the male connector and the female connector may separate, thereby causing an unstable connection between the male connector and the female connector. If the force is too great, the motor terminal on the male connector may loosen, thereby damaging the DC connector.

[0003] Generally, in order to avoid the instability of this connection method, screws are used to lock the male connector and the female connector through and through. The installation is cumbersome and it is inconvenient to separate the male connector and the female connector, which affects the convenience of use. Summary of the Invention

[0004] In order to improve the above problems, the present application provides a DC connector.

[0005] The DC connector provided in this application adopts the following technical solution:

[0006] A DC connector includes a first connector and a second connector; the first connector is plugged into the second connector; a raised portion is provided on the inner wall of the first connector; the second connector is provided with a fixing sleeve, the diameter of the fixing sleeve is smaller than the inner diameter of the first connector, and the fixing sleeve is plugged into the first connector; a clamping groove is provided on the fixing sleeve, and when the clamping groove and the raised portion are docked, the first connector and the second connector are plugged into each other, and the raised portion synchronously moves into the clamping groove and clamps with the clamping groove.

[0007] By adopting the above technical solution, the first connector is plugged into the first connector, and during the plugging process, the protrusion moves into the snap-in groove and snaps into the snap-in groove, thereby increasing the connection stability between the first connector and the second connector and reducing the instability of the first connector and the second connector.

[0008] Optionally, the clamping slot is L-shaped, and when the protrusion is located at the bend of the clamping slot, the first connector or the second connector is rotated so that the protrusion rotates to the other end of the bend of the clamping slot.

[0009] By adopting the above technical solution, it is only necessary to rotate either the first connector or the second connector to rotate the protrusion to the other end of the bend of the snap-fit ​​groove to complete the limiting function, so that even if the first connector and the second connector are pulled out with force, they will be limited by the protrusion and the snap-fit ​​groove and cannot be separated, further improving the stability of the connection between the first connector and the second connector.

[0010] Optionally, a fastening portion is provided on a side of the inner wall of the clamping groove away from the second joint, and the fastening portion abuts against the protruding portion.

[0011] By adopting the above technical solution, when the protrusion rotates along the L-shaped clamping groove, it contacts the fastening part, and the fastening part squeezes the protrusion, so that the protrusion is clamped into the other end of the fastening part. When the first joint or the second joint needs to be rotated, a certain torque needs to be applied to separate the protrusion from the fastening part, thereby improving the tightness of the connection.

[0012] Optionally, a limiting groove is provided on the protruding portion, and the limiting groove is engaged with the protruding portion.

[0013] By adopting the above technical solution, after the limiting groove is opened, the protrusion does not need to be inserted into the other side of the fastening part, and the fastening part only needs to be inserted into the limiting groove. This method can reduce the required torque, and also avoid the protrusion or the fastening part from being damaged due to excessive force, thereby extending the service life of the protrusion and the fastening part.

[0014] Optionally, the limiting groove is in a V-shaped groove.

[0015] By adopting the above technical solution, the groove surface of the limiting groove is partially inclined or has a certain curvature, or has a certain chamfer. When the fastening part is inserted into the limiting groove, it is easier to insert into it through the partial inclination or chamfer.

[0016] Optionally, a single snap-fit ​​groove and the protruding portion form a group, and at least two groups are provided on the first joint and the second joint.

[0017] By adopting the above technical solution, at least two groups of protrusions and snap-in grooves are provided to increase the force balance, so that when the first joint and the second joint are forcibly separated by a force such as dragging, the force can be dispersed to more than two groups of protrusions to achieve a stable force balance and further improve the tensile strength.

[0018] Optionally, a positioning portion is provided on the outer wall of the first joint and located at the back side of the raised portion.

[0019] By adopting the above technical solution, when the first connector and the second connector need to be connected, the position of the protrusion can be intuitively observed using the positioning portion, and the notch of the snap-fit ​​groove can be aligned with the protrusion for plugging. There is no need to fumble and rotate the first connector or the second connector until the protrusion is docked with the snap-fit ​​groove, thereby improving the convenience of connection.

[0020] Optionally, an anti-slip ring is provided on a side of the first joint away from the raised portion.

[0021] By adopting the above technical solution, the first joint can be easily rotated using the anti-slip ring, thereby increasing the friction force of the first joint during rotation and enhancing the stability of the rotation.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Plug the first connector into the second connector. During the plugging process, the protrusion moves into the engaging groove and engages with the engaging groove, thereby increasing the connection stability between the first connector and the second connector and reducing the instability of the first connector and the second connector.

[0024] 2. Simply rotating either the first connector or the second connector will cause the protrusion to rotate to the other end of the bend of the snap-fit ​​groove, completing the limiting function. Even if the first connector and the second connector are pulled out with force, they will be limited by the protrusion and the snap-fit ​​groove and cannot be separated, further improving the stability of the connection between the first connector and the second connector.

[0025] 3. When the raised portion rotates along the L-shaped clamping groove, it contacts the fastening portion, and the fastening portion squeezes the raised portion, causing the raised portion to snap into the other end of the fastening portion. When the first connector or the second connector needs to be rotated, a certain torque is required to separate the raised portion from the fastening portion, thereby improving the tightness of the connection;

[0026] 4. After the limiting groove is opened, the raised part does not need to be inserted into the other side of the fastening part. The fastening part only needs to be inserted into the limiting groove. This method can reduce the required torque and avoid damage to the raised part or the fastening part due to excessive force, thereby extending the service life of the raised part and the fastening part. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic diagram of the three-dimensional structure of a DC connector in one embodiment of the present application;

[0028] Figure 2 is a front structural schematic diagram of a fixing sleeve in some embodiments of the present application;

[0029] Figure 3 This application Figure 1 Schematic diagram of the enlarged structure of A;

[0030] The marks in the accompanying drawings are: 1. first joint, 11. protrusion, 111. limiting groove, 12. positioning part, 13. anti-slip ring, 2. second joint, 21. fixing sleeve, 211. snap-fit ​​groove, 212. fastening part, 23. inner groove. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the information disclosed in this application. The present application can also be implemented or applied through different specific embodiments. The details in this application can also be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless they conflict.

[0032] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0033] In the description of this application, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this application, as well as features of different embodiments or examples, unless otherwise contradictory.

[0034] Furthermore, the terms "first" and "second" are used solely to indicate a target and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the context of this application, "plurality" means two or more, unless otherwise specifically defined.

[0035] Throughout this specification, when a device is said to be "connected" to another device, this includes not only "direct connection" but also "indirect connection" with other elements interposed therebetween. Furthermore, when a device is said to "include" a certain component, unless otherwise stated, this does not exclude the inclusion of other components but rather implies that the device may include other components.

[0036] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0037] The embodiment of the present application discloses a DC connector.

[0038] A DC connector, reference Figure 1As shown, it includes a first connector 1 and a second connector 2. The first connector 1 is plugged into the second connector 2. The first connector 1 is a female connector, so the first connector 1 is provided with a connector slot for power connection. The second connector 2 is a male connector, so the second connector 2 is provided with a metal connecting column, which is inserted into the connector slot for power connection.

[0039] The inner wall of the first connector 1 is provided with a protrusion 11 , which may be in a rectangular block structure and made of a hardened insulating material such as plastic or cured plastic, so as to avoid leakage due to structural influences.

[0040] The second connector 2 is provided with a fixing sleeve 21. The diameter of the fixing sleeve 21 is smaller than the inner diameter of the first connector 1. The fixing sleeve 21 is plugged into the first connector 1. The fixing sleeve 21 can be made of insulating materials such as plastic or cured plastic to wrap part of the metal connecting column. The insulating material can also ensure safety. The diameter of the fixing sleeve 21 is smaller than the inner diameter of the first connector 1, so that the fixing sleeve 21 can be inserted into the first connector 1 synchronously with the metal connecting column.

[0041] A snap-fitting groove 211 is provided on the fixing sleeve 21. When the snap-fitting groove 211 is docked with the protruding portion 11, the first connector 1 and the first connector 2 are plugged in. During the plugging process, the protruding portion 11 moves into the snap-fitting groove 211 and snaps in with the snap-fitting groove 211, thereby increasing the connection stability between the first connector 1 and the second connector 2 and reducing the instability of the first connector 1 and the second connector 2.

[0042] When the first connector 1 and the second connector 2 need to be pulled out, only force is required to separate the protrusion 11 from the engaging groove 211 , thereby separating the first connector 1 and the second connector 2 , thereby improving the convenience of connecting and separating the first connector 1 and the second connector 2 .

[0043] For further reference, Figure 1 or Figure 2 As shown, the snap-fitting groove 211 is L-shaped, and the groove wall width of the L-shaped groove is consistent with the width of the protruding portion 11, so that when the protruding portion 11 is docked with the snap-fitting groove 211, it can move along the L-shaped groove to the bending part of the snap-fitting groove 211. Then, only the first joint 1 or the second joint 2 needs to be rotated to rotate the protruding portion 11 to the other end of the bending part of the snap-fitting groove 211, completing the limiting effect, so that even if the first joint 1 and the second joint 2 are pulled out with force, they will be limited by the protruding portion 11 and the snap-fitting groove 211 and cannot be separated, further improving the stability of the connection between the first joint 1 and the second joint 2.

[0044] When it is necessary to separate the first connector 1 and the second connector 2, the first connector 1 or the second connector 2 is rotated along the L-shaped snap-fit ​​groove 211 so that the protrusion 11 moves to a position on the same straight line as the notch of the snap-fit ​​groove 211, and then pulled out to disengage the protrusion 11 from the snap-fit ​​groove 211, and the first connector 1 and the second connector 2 are separated at the same time.

[0045] Further, refer to Figure 2 As shown, a fastening portion 212 is provided on the inner wall of the clamping groove 211 away from the second joint 2, and the fastening portion 212 abuts against the protrusion 11. The fastening portion 212 can be a fastening block, which can be a semicircular plastic or rubber material with a certain elasticity. When the protrusion 11 rotates along the L-shaped clamping groove 211, it contacts the fastening portion 212, and the fastening portion 212 squeezes the protrusion 11, so that the protrusion 11 is clamped into the other end of the fastening portion 212. When the first joint 1 or the second joint 2 needs to be rotated, a certain torque needs to be applied to separate the protrusion 11 from the fastening portion 212, so that the fastening of the connection is improved.

[0046] On the other hand, a limiting groove 111 is provided on the raised portion 11, and the limiting groove 111 is engaged with the raised portion 11. After the limiting groove 111 is provided, the raised portion 11 does not need to be engaged with the other side of the fastening portion 212, and the fastening portion 212 only needs to be engaged with the limiting groove 111. This method can reduce the required torque, and at the same time avoid damage to the raised portion 11 or the fastening portion 212 due to excessive force, thereby extending the service life of the raised portion 11 and the fastening portion 212.

[0047] For further reference, Figure 3 As shown, the limiting groove 111 can be a V-shaped groove or a semi-arc groove, so that the groove surface of the limiting groove 111 is partially inclined or has a certain curvature, or has a certain chamfer. When the fastening portion 212 is inserted into the limiting groove 111, it is easier to insert into it through partial inclination or chamfering, further reducing the required torque and further extending the service life of the protrusion 11 and the fastening portion 212.

[0048] Furthermore, a single snap-fit ​​groove 211 and a protrusion 11 form a group, and at least two groups are set on the first joint 1 and the second joint 2. Setting at least two groups of protrusions 11 and snap-fit ​​grooves 211 can increase the force balance, so that when the first joint 1 and the second joint 2 are forcibly separated by a force such as dragging, the force can be dispersed to more than two groups of protrusions 11 to achieve a stable force balance and further improve the tensile strength.

[0049] In some embodiments, reference Figure 1As shown, a positioning portion 12 is provided on the outer wall of the first joint 1 and at a position on the back side of the raised portion 11. The positioning portion 12 can be a positioning groove or a positioning piece, and the surface of the positioning groove or the positioning piece can be coated with eye-catching paint, or the color of the material itself can be an eye-catching color, such as white, which has a positioning effect that can be identified by the naked eye.

[0050] When the first connector 1 and the second connector 2 need to be connected, the position of the protrusion 11 can be intuitively observed using the positioning portion 12, and the notch of the snap-fit ​​groove 211 can be aligned with the protrusion 11 for plugging. There is no need to fumble and rotate the first connector 1 or the second connector 2 until the protrusion 11 and the snap-fit ​​groove 211 are docked, thereby improving the convenience of connection.

[0051] In some embodiments, reference Figure 1 As shown, an anti-slip ring 13 is provided on the side of the first joint 1 away from the raised portion 11. Anti-slip grooves can be provided on the surface of the anti-slip ring 13. The anti-slip ring 13 can be used to facilitate the rotation of the first joint 1, thereby increasing the friction force of the first joint 1 during rotation and increasing the stability of rotation.

[0052] In some embodiments, the connection method between the fixing sleeve 21 and the second joint 2 can be a pivot connection. The pivot connection is specifically to provide a raised ring on the second joint 2, and to provide an inner groove 23 in the fixing sleeve 21. The raised ring is located in the inner groove 23, so that the raised ring and the inner groove ring limit each other, and the fixing sleeve 21 cannot be separated from the second joint 2. When the fixing sleeve 21 is rotated subsequently, the fixing sleeve 21 and the second joint 2 will not rotate with it, and the fixing sleeve 21 can rotate independently.

[0053] Among them, the second joint 2 can also be provided with an inner groove 23, and the fixing sleeve 21 can be provided with a raised ring. The raised ring and the inner groove 23 are used to limit the pivoting, so that the fixing sleeve 21 cannot be separated from the second joint 2 and can rotate along the inner groove 23. Both methods can achieve pivotal connection. This embodiment refers to Figure 1 shown.

[0054] This pivotal connection method can prevent the first connector 1 from being affected by the rotation of the fixing sleeve 21. After the first connector 1 and the second connector 2 are connected, the fixing sleeve 21 can rotate on its own to disengage the connection between the protrusion 11 and the snap-in groove 211 without affecting the connection stability between the plug socket on the first connector 1 and the metal connecting column on the second connector 2.

[0055] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A DC connector, characterized in that: The invention comprises a first joint (1) and a second joint (2); the first joint (1) and the second joint (2) are plugged together; a protrusion (11) is provided on the inner wall of the first joint (1); the second joint (2) is provided with a fixing sleeve (21), the diameter of the fixing sleeve (21) is smaller than the inner diameter of the first joint (1), and the fixing sleeve (21) is plugged together with the first joint (1); a clamping groove (211) is provided on the fixing sleeve (21), and when the clamping groove (211) and the protrusion (11) are docked, the first joint (1) and the second joint (2) are plugged together, and the protrusion (11) is synchronously moved into the clamping groove (211) and is clamped together with the clamping groove (211).

2. A DC connector according to claim 1, characterized in that: The clamping groove (211) is L-shaped, and when the protrusion (11) is located at the bend of the clamping groove (211), the first connector (1) or the second connector (2) is rotated, and the protrusion (11) rotates to the other end of the bend of the clamping groove (211).

3. A DC connector according to claim 2, characterized in that: A fastening portion (212) is provided on the inner wall of the clamping groove (211) away from the second joint (2), and the fastening portion (212) abuts against the raised portion (11).

4. A DC connector according to claim 3, characterized in that: A limiting groove (111) is provided on the raised portion (11), and the limiting groove (111) is engaged with the raised portion (11).

5. A DC connector according to claim 4, characterized in that: The limiting groove (111) is in a V-shaped groove shape.

6. A DC connector according to claim 5, characterized in that: A single snap-fit ​​groove (211) and the protruding portion (11) form a group, and at least two groups are provided on the first joint (1) and the second joint (2).

7. The DC connector according to claim 1, characterized in that: A positioning portion (12) is provided on the outer wall of the first joint (1) and located on the back side of the raised portion (11).

8. The DC connector according to claim 1, characterized in that: An anti-slip ring (13) is provided on the side of the first joint (1) away from the raised portion (11).

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