A novel spring damper and a socket cover structure containing the spring damper

Abstract

The present invention discloses a novel spring damper and a socket cover structure containing the spring damper, wherein the novel spring damper comprises a damping frame and a spring, wherein the damping frame comprises a limiting plate and an extension portion which is arranged in the middle of one end surface of the limiting plate and protrudes outward, wherein one end of the spring is sleeved on the outer periphery of the extension portion, and the outer diameter of the spring is smaller than the size of the limiting plate; the axial length of the spring in a non-compressed state is greater than the length of the extension portion; and the center of the extension portion is provided with a through hole which penetrates the damping frame front and back along the axial direction. The novel spring damper of the present invention has the characteristics of simple structure and low cost, and utilizes a spring to achieve a damping effect, and its elastic force is little affected by the environment, so its damping value is not sensitive to temperature and has good performance consistency.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, in particular to a novel spring damper and a socket cover structure containing the spring damper. Background Art

[0002] Existing dampers are generally hydraulic dampers, which are composed of multiple parts, have a complex structure and are relatively expensive. In addition, the liquid in the hydraulic damper is sensitive to temperature, and the damping value varies greatly at high and low temperatures, so the damping effect also varies greatly, and its performance consistency is poor.

[0003] The charging sockets on electric vehicles or charging piles generally include an end cover for fixing and a socket cover that is covered on the end cover for sealing. One end of the two is movably connected, and the other end is buckled by a button. In order to facilitate automatic opening of the socket cover and maintain the opening retention force, a torsion spring is generally provided between the end cover and the socket cover to realize the power for automatic opening. However, when the button is turned on, the socket cover will open quickly under the action of the torsion spring, and the socket cover will collide with the end cover under force to make a sound, which cannot meet the requirements of opening in 2 to 3 seconds and opening and closing without sound, and the socket cover and the end cover are easily damaged after the collision. Therefore, it is often necessary to add a damper between the socket cover and the end cover to slow down the opening speed of the socket cover, so that the socket cover opens slowly without colliding with the end cover with great force, but the existing hydraulic damper has a complex structure and is relatively expensive. Summary of the invention

[0004] In view of the above-mentioned existing technical defects, the present invention provides a new mechanical spring damper with the characteristics of simple structure and low cost. The spring is used to achieve the damping effect. The elastic force is little affected by the environment, so the damping value is not sensitive to temperature and has good performance consistency.

[0005] In order to solve the above technical problems, the present invention provides a new type of spring damper, including a damping frame and a spring, the damping frame including a limiting plate and an extension portion which is arranged in the middle of one end surface of the limiting plate and protrudes outward, one end of the spring is sleeved on the outer periphery of the extension portion, and the outer diameter of the spring is less than or equal to the size of the limiting plate; the axial length of the spring in a non-compressed state is greater than the length of the extension portion; the center of the extension portion is provided with a through hole which penetrates the damping frame front and back along the axial direction.

[0006] Preferably, a holder protruding outward is provided on the other end surface of the limiting plate.

[0007] Preferably, the longitudinal cross-sections of the limiting plate and the extending portion are both circular, and the outer diameter of the spring is less than or equal to the diameter of the limiting plate.

[0008] Preferably, the inner diameter of the spring is greater than the diameter of the extension portion.

[0009] Preferably, the spring is made of metal.

[0010] The present invention also provides a socket cover structure, comprising a socket cover and an end cover, wherein a first clamping portion is provided at one end of the end cover, the first clamping portion comprises two fixing plates, a first bayonet is formed between the two fixing plates, and a mounting portion is provided at one end of the socket cover and sleeved in the first bayonet, the fixing plate and the mounting portion are fixed by a pin shaft, a torsion spring is sleeved on the pin shaft, and the two ends of the torsion spring are respectively clamped to the socket cover and the end cover; it also comprises the new spring damper as described above, wherein a mounting hole is provided at one end of the mounting portion, the new spring damper is arranged in the mounting hole, and the pin shaft passes through the through hole on the new spring damper; an end of the spring away from the limiting plate abuts against the inner wall surface of the mounting hole, and the spring is in a compressed state.

[0011] Preferably, a slot is provided on the inner side of the fixing plate at a side corresponding to the novel spring damper, and the holder on the novel spring damper protrudes from the mounting hole and is engaged in the slot.

[0012] Preferably, the mounting portion is provided with a cavity for accommodating the torsion spring, and a groove for clamping one end of the torsion spring is provided at the bottom of the cavity; a groove for clamping the other end of the torsion spring is also provided at the bottom of the first bayonet.

[0013] Preferably, a second engaging portion is provided on the end cover at the other end corresponding to the first engaging portion, a second engaging portion is provided with a second bayonet, and a button is movably provided in the second bayonet via a pin shaft and a torsion spring.

[0014] Preferably, the first clamping portion and the second clamping portion are arranged in a centrally symmetrical manner.

[0015] Preferably, one end of the pin shaft is provided with an annular groove for engaging with an opening retaining ring.

[0016] The present invention has the following beneficial effects:

[0017] The present invention comprises a damping frame and a spring to form a mechanical damper, and the length of the spring in a non-compressed state is greater than the length of the extension portion on the damping frame, so that when the damper is applied to the socket cover closing structure, the spring is in a compressed state, so that the elastic force of the spring is converted into an axial pressure between the socket cover and the end cover, thereby increasing the friction between the two, and there is also friction between the spring and the socket cover, which, under the joint action of the friction force, offsets a part of the force of the torsion spring on opening the socket cover, thereby achieving a damping effect and allowing the socket cover to be opened slowly; and a card seat is provided on the outer end surface of the limiting plate to engage with a card slot on the end cover to prevent the damper from rotating as the socket cover is opened, thereby ensuring that the force applied by the spring to the socket cover is effective; the damper of the present invention has the characteristics of simple structure and low cost, and is convenient to assemble with the socket cover, and uses a metal spring to achieve a damping effect, and its elastic force is little affected by the environment, so its damping value is not sensitive to temperature and has good performance consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 Schematic diagram of the novel spring damper in Examples 1 and 2;

[0020] Figure 2 is an exploded view of the novel spring damper in Examples 1 and 2;

[0021] Figure 3 is a cross-sectional view of the novel spring damper in Examples 1 and 2;

[0022] Figure 4 This is a schematic diagram of the socket covering structure after being covered in Example 2;

[0023] Figure 5 This is a schematic diagram of the socket cover structure after opening in Example 2;

[0024] Figure 6 It is an exploded view of the socket cover structure in Example 2;

[0025] Figure 7 This is a cross-sectional view of the socket covering structure after being covered in Example 2. DETAILED DESCRIPTION

[0026] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and illustrated in conjunction with the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] like Figures 1 to 3As shown, a new type of spring damper shown in this embodiment includes a damping frame 1 and a spring 2. The damping frame 1 includes a limiting plate 11 and an extension portion 12 which is integrally formed and arranged in the middle of one end surface of the limiting plate 11 and protrudes outward. One end of the spring 2 is sleeved on the outer periphery of the extension portion 12, and the outer diameter of the spring 2 is less than or equal to the size of the limiting plate 11, ensuring that the limiting plate can support the spring 2, so that the spring can be effectively compressed when used and is convenient to install; the axial length of the spring 2 in the non-compressed state (i.e., the vertical length from the front end to the rear end) is greater than the length of the extension portion 12, ensuring that the spring can be compressed; the center of the extension portion 12 is provided with a through hole 13 that penetrates the damping frame 1 front and back along the axial direction, which is interlaced with the shaft during actual application to achieve fixed installation of the damper.

[0029] Specifically, a holder 14 protruding outward is provided on the other end surface of the limiting plate 11 for engaging with the groove during actual application to prevent the damping frame 1 from rotating.

[0030] Specifically, the longitudinal (ie radial) cross-sections of the limiting plate 11 and the extending portion 12 are both circular, that is, the limiting plate 11 and the extending portion 12 are both cylindrical, that is, the outer diameter of the spring 2 is less than or equal to the diameter of the limiting plate 11 .

[0031] In actual application, the inner diameter of the spring 2 is larger than the diameter (ie, the outer diameter) of the extension portion 12 .

[0032] The spring 2 is made of metal (for example, spring steel). The metal spring is used to achieve a damping effect. The elastic force thereof is little affected by the environment, so the damping value thereof is insensitive to temperature and has good performance consistency.

[0033] In other embodiments of the present invention, the limiting plate and / or the extension portion may also be arranged in a square shape, etc. When arranged in a square shape, the length and width of the limiting plate are both greater than or equal to the outer diameter of the spring, and at this time, a socket is not arranged on the outer end face of the limiting plate.

[0034] Example 2

[0035] like Figures 1 to 7As shown, this embodiment provides a socket cover structure, including an end cover 3, a socket cover 4 covered on the end cover 3 for sealing, and the new spring damper described in Example 1, one end of the end cover 3 is provided with a first clamping portion, the first clamping portion includes two fixing plates 5, a first bayonet 51 is formed between the two fixing plates 5, one end of the socket cover 4 is provided with a mounting portion 41 sleeved in the first bayonet 51, the fixing plate 5 and the mounting portion 41 are rotatably connected and fixed by a pin shaft 6 passing through the two front and back, one end of the pin shaft 6 placed in the first bayonet 51 is sleeved with a torsion spring 61, the two ends of the torsion spring 61 are respectively clamped to the socket cover 4 and the end cover 3, and the torsion force of the torsion spring is used as the power for the socket cover to realize automatic opening and the holding force to maintain the open state; the mounting portion 41 is provided with a cavity 41 for accommodating the torsion spring 61 at one end corresponding to the torsion spring 61 1, and the other end is provided with a mounting hole 412 for mounting a new spring damper. After the new spring damper is arranged in the mounting hole 412, the pin 6 passes through the through hole 13 on the new spring damper, and the end of the spring 2 away from the limiting plate 11 abuts against the inner wall of the mounting hole 412, and the spring 2 is in a compressed state, so that the elastic force of the spring is used to generate axial pressure between the mounting portion and the fixing plate. When the socket cover is rotated open by the torsion force of the torsion spring, the pressure will increase the friction between the socket cover and the end cover (that is, between the contact surfaces of the outer side of the mounting portion and the inner side of the fixing plate); and when the socket cover is rotated open, there will also be friction between the spring and the socket cover, and under the joint action of the friction, a part of the force (that is, the torsion force) of the torsion spring on opening the socket cover is offset, thereby achieving a damping effect and allowing the socket cover to be slowly opened.

[0036] Specifically, a card slot 52 is provided on the inner side of the fixing plate 5 on the side corresponding to the new spring damper, and the card seat 14 on the new spring damper protrudes from the mounting hole 412 and is engaged in the card slot 52, so that the damping frame 1 is fixed; in actual application, the inner diameter of the spring 2 should be larger than the diameter of the extension portion 12, because when the inner diameter of the spring is consistent with the outer diameter of the extension portion, the elastic force of the spring will fail and there will be no damping effect; and when the inner diameter of the spring 2 is larger than the diameter of the extension portion 12, there will be a gap between the spring 2 and the extension portion 12. When in use, the spring may be driven by the socket cover to rotate together, or it may not rotate. Because the damping frame does not rotate, friction will be generated at both ends of the spring that are respectively abutted against the limiting plate and the socket cover. In this way, regardless of whether the spring rotates with the socket cover or not, the socket cover will be subject to the friction brought by the spring, and the friction is also the resistance of the socket cover to rotate and open, while the friction generated between the socket cover and the fixing plate of the end cover remains unchanged.

[0037] Specifically, a groove (not shown in the figure) for clamping one end of the torsion spring 61 is provided at the bottom of the cavity 411 ; a groove (not shown in the figure) for clamping the other end of the torsion spring 61 is also provided at the bottom of the first bayonet 51 .

[0038] A second engaging portion is provided on the end cover 3 at the other end corresponding to the first engaging portion, and a second bayonet 53 is provided on the second engaging portion. A button 7 is movably provided in the second bayonet 53 through a pin shaft 6 and a torsion spring 61, and the button is used to buckle the other end of the corresponding mounting portion on the socket cover to fix the socket cover after closing; specifically, the button 7 is placed in the second bayonet 53, and the pin shaft 6 is passed through the second bayonet portion and the button 7 front and back to achieve rotational connection and fixation, and the two ends of the torsion spring 61 on the pin shaft 6 are respectively clamped to the end cover 3 and the button 7, that is, a groove 531 for clamping one end of the torsion spring is provided at the bottom of the second bayonet 53 and the button 7.

[0039] Specifically, the first engaging portion and the second engaging portion are centrally symmetrically arranged, that is, the second engaging portion also includes two fixing plates 5, and the fixing plate 5 with a slot 52 in the second engaging portion and the fixing plate with a slot in the first engaging portion are arranged on different sides (that is, two opposing sides). In this way, in actual application, based on the installation position and the opening direction of the socket cover, the installation positions of the button and the mounting portion on the socket cover can be flexibly exchanged, that is, the button can be arranged in the first engaging portion, and the mounting portion can be arranged in the second engaging portion, thereby effectively improving the practicality and applicability of the socket cover structure of this embodiment.

[0040] Specifically, the axial cross-section of the pin shaft 6 is T-shaped, and an annular groove 9 for engaging the open retaining ring 8 is provided at the end of the vertical section of the pin shaft. In this way, after the vertical section of the pin shaft is inserted into the object, the open retaining ring 8 is installed on the annular groove 9 to fix the pin shaft. This structure is convenient for assembly.

[0041] In other embodiments of the present invention, the mounting hole can also be set to a matching shape according to the shape of the limiting plate; for example, when the limiting plate is square, the mounting hole is also square, and no slot is provided on the fixing plate. The outer end face of the damper contacts the inner end face of the fixing plate, and the damper rotates together with the opening of the socket cover. At this time, under the influence of the spring, the outer end face of the limiting plate will generate friction with the inner end face of the fixing plate. The outer end face of the other end of the mounting portion and the other fixing plate will also be affected by the elastic force and increase the friction, which is used to offset the torsion of the torsion spring and achieve the damping effect.

[0042] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A socket cover structure, comprising a socket cover and an end cover, wherein one end of the end cover is provided with a first clamping portion, the first clamping portion comprises two fixing pieces, a first bayonet is formed between the two fixing pieces, one end of the socket cover is provided with a mounting portion sleeved in the first bayonet, the fixing piece and the mounting portion are fixed by a pin shaft, a torsion spring is sleeved on the pin shaft, and two ends of the torsion spring are respectively clamped to the socket cover and the end cover; It is characterized in that It also includes a spring damper, which includes a damping frame and a spring. The damping frame includes a limiting plate and an extension portion which is arranged in the middle of one end surface of the limiting plate and protrudes outward, one end of the spring is sleeved on the outer periphery of the extension portion, and the outer diameter of the spring is less than or equal to the size of the limiting plate, and the inner diameter of the spring is greater than the diameter of the extension portion; the axial length of the spring in a non-compressed state is greater than the length of the extension portion; the center of the extension portion is provided with a through hole which penetrates the damping frame front and back along the axial direction; a holder protruding outward is provided on the other end surface of the limiting plate; a mounting hole is provided at one end of the mounting portion, the spring damper is arranged in the mounting hole, and the pin passes through the through hole on the spring damper; one end of the spring away from the limiting plate abuts against the inner wall of the mounting hole, and the spring is in a compressed state; a card slot is provided on the inner side of the fixing plate on the side corresponding to the spring damper, and the card slot on the spring damper protrudes from the mounting hole and is engaged in the card slot.

2. The socket cover structure according to claim 1, It is characterized in that The longitudinal cross-sections of the limiting plate and the extending portion are both circular, and the outer diameter of the spring is less than or equal to the diameter of the limiting plate.

3. The socket cover structure according to claim 2, It is characterized in that The mounting portion is provided with a cavity for accommodating the torsion spring, and the bottom of the cavity is provided with a groove for clamping one end of the torsion spring; the bottom of the first bayonet is also provided with a groove for clamping the other end of the torsion spring.

4. The socket cover structure according to claim 3, It is characterized in that A second engaging portion is provided on the end cover at the other end corresponding to the first engaging portion, a second engaging portion is provided with a second bayonet, and a button is movably provided in the second bayonet through a pin shaft and a torsion spring.

5. The socket cover structure according to claim 4, It is characterized in that The first clamping portion and the second clamping portion are centrally symmetrically arranged.

6. The socket cover structure according to claim 5, It is characterized in that One end of the pin shaft is provided with an annular groove for engaging with an opening retaining ring.

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