Damper for electric supporting rod

Abstract

The utility model relates to the field of dampers, in particular to a damper for an electric supporting rod, which comprises a shell and a screw plug pre-tightening piece connected onto the shell. The shell comprises a shell body; the housing body is provided with an assembling sinking groove. A friction stop mechanism is arranged in the assembly sinking groove; the screw plug pre-tightening piece is connected with the friction stop mechanism through the pre-pressing component. The pre-pressing component comprises a pre-tightening protrusion arranged on the screw plug pre-tightening piece. The screw plug pre-tightening piece abuts against the friction stop mechanism through the pre-tightening protrusion. Through the arrangement of the pre-pressing component, the pre-pressing component replaces an elastic component in a traditional damper, due to the design, the use of overall parts of the damper can be reduced, integration to a certain degree is achieved, the overall structure of the damper is compact, the occupied space of the overall structure is small, and the cost of the damper is reduced by reducing the use of the elastic component. And the production cost of the damper can be reduced to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of damper, specifically a damper for electric support rod. BACKGROUND

[0002] In order to realize the demand that people do not contact the car door and can normally open and close the door, many remote control or induction control electric opening and closing door systems appear in the current market.

[0003] The most critical mechanical component of the electric opening and closing door system is the electric support rod, and the role of the damper in the electric support rod is to realize the hovering of the car door at any position.

[0004] The existing electric support rod damper is generally a structure in which elastic elements extrude a stack of multiple rotation stop washers, friction plates and rotation washers, and torque is provided through a rotating tooth groove washer, such as the patent CN201922466403.6 - a damper applied to an electric support rod of a car.

[0005] However, the existing damper inevitably needs to use elastic elements, and the setting of the elastic elements not only increases the overall part number of the damper, but also causes an increase in the assembly process of the damper.

[0006] Therefore, in order to improve or solve at least one of the above problems, it is urgent to optimize the design of the existing damper structure. INVENTION CONTENTS

[0007] The utility model discloses a damper structure capable of reducing assembly parts.

[0008] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0009] A damper for an electric support rod, comprising a shell and a screw plug pre-tightening element connected to the shell;

[0010] The shell comprises a shell body; the shell body is provided with an assembly sink; the assembly sink is provided with a friction stop mechanism;

[0011] The screw plug pre-tightening element is connected to the friction stop mechanism through a pre-pressing component; the pre-pressing component comprises a pre-tightening protrusion provided on the screw plug pre-tightening element; the screw plug pre-tightening element is pressed on the friction stop mechanism through the pre-tightening protrusion.

[0012] The friction stop mechanism comprises a transmission friction element and a rotation stop element; the transmission friction element and the rotation stop element are arranged in mutual adhesion.

[0013] The transmission friction element comprises a rotating element and a friction element, and the rotating element is in contact with the rotation stop element through the friction element.

[0014] The friction element and the rotation-stopping element or rotation element are in an integral structure.

[0015] The friction element and the rotation-stopping element or rotation element are in an integral structure.

[0016] The clamping mechanism comprises a clamping groove arranged on the rotation element, and a clamping protrusion arranged on the friction element.

[0017] The screw plug pre-tightening member is a plastic member.

[0018] The friction-stopping mechanism comprises two rotation-stopping elements, the transmission friction member comprises two friction elements, the two friction elements are distributed on two sides of the rotation-stopping element, and the two rotation-stopping elements are distributed on two sides of the transmission friction member.

[0019] The screw plug pre-tightening member is a plastic member.

[0020] The screw plug pre-tightening member comprises a screw plug body, a material-reducing sink is arranged on a side of the screw plug body, away from the friction-stopping mechanism, and an auxiliary assembly groove is arranged on an inner wall of the material-reducing sink.

[0021] The screw plug pre-tightening member is screwed into the placing sink, a waist-shaped welding hole is arranged on the shell body, and the waist-shaped welding hole is in communication with the placing sink.

[0022] The utility model discloses the advantages are:

[0023] The utility model discloses a damper for electric supporting rod.

[0024] The utility model discloses a damper for electric supporting rod. BRIEF DESCRIPTION OF DRAWINGS

[0025] The contents expressed by each drawing of the utility model specification and the marks in the drawing are briefly explained as follows:

[0026] Figure 1 It is the structural schematic diagram of the utility model.

[0027] Figure 2 It is the explosion drawing of the utility model.

[0028] Figure 3 It is the structural schematic diagram of the screw plug pre-tightening member in the utility model.

[0029] Figure 4 The sectional view of the transmission friction element integrated in the utility model.

[0030] Figure 5 The exploded view of the transmission friction element integrated in the utility model.

[0031] The marks in the above figures are all:

[0032] 1, screw plug pre-tightening element, 1-1, pre-tightening protrusion, 2, rotation-stopping element, 4.1 transmission friction element, 3, friction element, 4, rotating element, 5, shell. DETAILED DESCRIPTION

[0033] The specific embodiments of the utility model are further explained in detail by comparing the drawings and describing the optimal embodiments.

[0034] A kind of damper for electric support rod, including shell 5 and the screw plug pre-tightening element 1 connected on shell 5;Shell 5 includes shell body 5-3;Shell body 5-3 is equipped with assembly sink 5-2;Friction stop mechanism is equipped in assembly sink 5-2;Screw plug pre-tightening element 1 is connected with friction stop mechanism by pre-pressing component;Pre-pressing component includes pre-tightening protrusion 1-1 arranged on screw plug pre-tightening element 1;Screw plug pre-tightening element 1 is pressed on friction stop mechanism by pre-tightening protrusion 1-1;The utility model is by the setting of pre-pressing component, it replaces the elastic component in traditional damper, such design, it can reduce the use of damper overall parts, also realize integration to a certain extent, so that damper overall structure is compact, overall structure occupies small space, and by reducing the use of elastic component, damper production cost can be reduced to a certain extent.

[0035] The damper disclosed by the utility model is mainly suitable for electric support rod.

[0036] Specifically, the damper for electric support rod disclosed by the utility model mainly includes shell 5 and the screw plug pre-tightening element 1 connected on shell 5;Shell 5 is connected foundation, which facilitates the installation and arrangement of the remaining components, and the screw plug pre-tightening element 1 plays a good extrusion restraint role, by controlling the assembly position of screw plug pre-tightening element 1 in shell 5, the friction force between friction stop mechanism can be controlled, and then the torque generated when rotating element 4 and friction element 3 rotate is controlled.

[0037] In the utility model, the shell 5 includes a shell body 5-3; the shell body 5-3 is the main structure of the shell 5, and an assembly recess 5-2 is arranged on the shell body 5-3; the assembly recess 5-2 is arranged to form a groove structure on the shell 5, facilitating the arrangement and placement of the friction stop mechanism and the screw plug pre-tightening piece 1 during subsequent use; in addition, in order to facilitate the installation of the screw plug pre-tightening piece 1 on the shell body 5-3, an internal thread is arranged on the inner wall of the assembly recess 5-2, and an external thread is arranged on the outer side of the bolt pre-tightening piece; during subsequent connection, the screw plug pre-tightening piece 1 is connected in the assembly recess 5-2 of the shell 5 through the threads.

[0038] In addition, the assembly recess 5-2 is internally provided with a friction stop mechanism in the utility model; the friction stop mechanism is arranged in the assembly recess 5-2, and the components in the friction stop mechanism rotate relative to each other during subsequent use, thereby generating friction, and finally generating corresponding torque, so that the stability of the electric support rod hovering can be improved during subsequent use.

[0039] Meanwhile, the screw plug pre-tightening piece 1 is connected with the friction stop mechanism through a pre-pressing component in the utility model; the pre-pressing component includes a pre-tightening protrusion 1-1 arranged on the screw plug pre-tightening piece 1; the screw plug pre-tightening piece 1 is pressed against the friction stop mechanism through the pre-tightening protrusion 1-1; the utility model is provided with the pre-pressing component, the pre-pressing component is pre-pressed and extruded on the friction stop mechanism, so that the friction stop mechanism can be subjected to a set pre-pressing force, thereby replacing the traditional elastic component during use, reducing the investment in traditional damper elastic components, and the pre-pressing component disclosed in the utility model mainly includes the pre-tightening protrusion 1-1, and the pre-tightening protrusion 1-1 is arranged on the screw plug pre-tightening piece 1; this makes the pre-tightening component and the screw plug pre-tightening piece 1 equivalent to an integrated structure, facilitating the arrangement and placement of the pre-tightening component; meanwhile, subsequent actual assembly operations are facilitated, and the investment in parts is reduced.

[0040] Further, the friction stop mechanism includes a transmission friction piece 4.1 and a rotation-stopping element 2 in the utility model; the transmission friction piece 4.1 and the rotation-stopping element 2 are arranged in mutual adhesion; the rotation-stopping element 2 is arranged in a groove on the inner wall of the shell assembly recess 5-2 through an outer edge, and plays a relative limiting role; after the rotation-stopping element 2 is assembled, it does not rotate relative to the shell 5; this facilitates the generation of friction force by the transmission friction piece 4.1, and then the generation of corresponding torque; in addition, the transmission friction piece 4.1 is matched with a gear or other external component through internal and external spline cooperation, facilitating the transmission of corresponding torque outward during subsequent use.

[0041] In the utility model, after the shell 5 is fixed, the transmission friction piece 4.1 can rotate in the shell 5, and the transmission friction piece 4.1 and the rotation-stopping element 2 are matched with each other to generate friction force, and then generate corresponding torque.

[0042] Further, the transmission friction part 4.1 comprises a rotating element 4 and a friction element 3 in the utility model, the rotating element 4 is contacted with the rotation-stopping element 2 through the friction element 3;The rotating element 4 is used for subsequent connection with external element, and the rotating element 4 is a circular disc structure, and the friction element 3 is also a circular disc structure, and the rotating element 4 and the friction element 3 can be designed into integrated structure or split structure according to different working conditions.

[0043] In the utility model, the transmission friction part 4.1 is conveniently used with the rotation-stopping element 2 through the setting of the friction element 3, and then the corresponding torque of the entire damper is conveniently generated quickly, and the response efficiency of the damper is improved.

[0044] Meanwhile, the friction element 3 and the rotation-stopping element 2 or the rotating element 4 are integrated structure in the utility model;Based on the above design, the utility model has multiple implementation schemes.

[0045] Scheme 1: the friction element 3, the rotating element 4 and the rotation-stopping element 2 are all split type design;

[0046] Based on such setting, the single part replacement is facilitated while the set torque generation is realized;Different materials of parts can be selected for mutual cooperation according to different use scenarios and working conditions.

[0047] Scheme 2: the rotation-stopping element 2 and the friction element 3 are integrated structure;

[0048] Based on such setting, the rotation-stopping element 2 and the friction element 3 are equivalent to a device, and the rotating element 4 is used with the device formed by the rotation-stopping element 2 and the friction element 3 to generate torque by mutual friction in subsequent use;Such setting can realize the set torque generation while reducing the use of damper part quantity and simplifying the overall assembly process.

[0049] Scheme 3: the friction element 3 and the rotating element 4 are integrated structure;

[0050] Based on such setting, the rotating element 4 and the friction element 3 are equivalent to a device, and the rotation-stopping element 2 is used with the device formed by the rotating element 4 and the friction element 3 to generate torque by mutual friction in subsequent use;Such setting can realize the set torque generation while reducing the use of damper part quantity and simplifying the overall assembly process.

[0051] Further, in the utility model, friction element 3 and rotating element 4 are integral structure;Rotating element 4 is connected with friction element 3 through clamping mechanism;The setting of clamping mechanism facilitates the relative limiting between friction element 3 and rotating element 4;Specifically, in the utility model, clamping mechanism includes the clamping groove 4.3 arranged on rotating element 4, and the clamping protrusion 4.4 is arranged on friction element 3, and friction element 3 is inserted on rotating element 4 through clamping protrusion 4.4;Based on such setting, friction element 3 and rotating element 4 have good limiting effect, relative rotation of friction element 3 and rotating element 4 is avoided, and the linkage of friction element 3 and rotating element 4 is ensured.

[0052] Meanwhile, in actual production, transmission friction piece 4.1 is generally produced by injection molding, and rotating element 4 is generally PA or other high-strength material;And friction element 3 is mostly composite friction material.

[0053] Further, in the utility model, the projection of each clamping protrusion 4.4 on friction element 3 is trapezoidal;The smaller width end of the clamping protrusion 4.4 is arranged close to the center side of the friction element 3;Such setting can ensure the stability of the movement of the transmission friction piece 4.1, avoid the friction element 3 and the rotating element 4 from being separated under the action of centrifugal force, and the clamping protrusion 4.4 is designed as a structure with one end large and one end small, which also has a good limiting effect, and avoids the friction element 3 from moving relative to the rotating element 4.

[0054] In the utility model, the clamping groove 4.3 and the clamping protrusion 4.4 are mutually adapted, and the two are formed the same, and the two are connected by interference fit.

[0055] Further, in the utility model, the rotating element 4 is provided with an embedded ring groove 4.2 close to the side of the friction element 3;The setting of the embedded ring groove 4.2 facilitates the embedding arrangement of the friction element 3 on the rotating element 4;At the same time, by limiting the inner diameter and outer diameter of the embedded ring groove 4.2, for example, the outer diameter of the embedded ring groove 4.2 is greater than the outer diameter of the rotating element 4;The embedded ring groove 4.2 is coaxially arranged with the rotating element 4;Such setting makes the edge of the rotating element 4 equivalent to form a side rib;Such setting, when the friction element 3 is embedded in the rotating element 4, the side rib plays a good limiting role, and in subsequent rotation, avoids the friction element 3 and the rotating element 4 from being dislocated and offset due to the action of centrifugal force.

[0056] Further, in the utility model, the friction element 3 is connected on the rotating element 4 through secondary injection molding process;Such setting facilitates the production of transmission friction piece 4.1, avoids the assembly process of friction element 3 and rotating element 4;At the same time, the friction element 3 is injection molded on the rotating element 4, which ensures the tightness of the connection of the two to a certain extent.

[0057] Further, in the utility model, the screw plug pre-tightening piece 1 is a plastic piece; such a setting makes the screw plug pre-tightening piece 1 have certain deformation capacity, which can produce certain capacity similar to the effect of a traditional elastic component in subsequent use; the elastic-plastic deformation of the overall plastic piece provides pressure for the friction stop mechanism.

[0058] Further, in the utility model, the friction stop mechanism comprises two rotation-stopping elements 2; the transmission friction piece 4.1 comprises two friction elements 3, and the two friction elements 3 are distributed on both sides of the rotating element 4; the two rotation-stopping elements 2 are distributed on both sides of the transmission friction piece 4.1; the utility model is based on the above design, so that the rotating element 4 can quickly produce a set torque through the matched friction elements 3, and the response speed of the damper is improved.

[0059] Further, in the utility model, at least three pre-tightening protrusions 1-1 are arranged on the screw plug pre-tightening piece 1, and the three pre-tightening protrusions 1-1 are evenly distributed in the circumferential direction of the screw plug pre-tightening piece 1; the arrangement of multiple pre-tightening protrusions 1-1 can realize the extrusion of adjacent rotation-stopping elements 2, ensure the balance of the force borne by the rotation-stopping elements 2 when they are extruded, and avoid the rotation-stopping elements 2 being raised on one side due to excessive force and affecting subsequent friction.

[0060] In actual design, six pre-tightening protrusions 1-1 are arranged on each screw plug pre-tightening piece 1; such a setting quantity can ensure the stable extrusion and pre-tightening of the friction stop mechanism while maintaining a low production cost.

[0061] In addition, in the utility model, the screw plug pre-tightening piece 1 comprises a screw plug body 1-3; the screw plug body 1-3 is provided with a material-reducing sink 1-4 on the side away from the friction stop mechanism; the arrangement of the material-reducing sink 1-4 in the utility model has multiple technical effects, one of which is to reduce the material, which not only reduces the weight of the screw plug pre-tightening piece 1, but also realizes the thinning of the screw plug pre-tightening piece 1 to a certain extent, increases the difficulty of deformation of the screw plug pre-tightening piece 1, and then facilitates the subsequent use, so that the damper has a relatively thin plastic wall thickness, and the elastic-plastic deformation of the overall plastic piece provides pressure.

[0062] Meanwhile, in the utility model, the auxiliary assembly grooves 1-2 are arranged on the inner wall of the material-reducing sink 1-4; multiple auxiliary assembly grooves 1-2 are arranged on the inner wall of the material-reducing sink 1-4, generally four auxiliary assembly grooves 1-2, and the multiple auxiliary assembly grooves 1-2 are evenly distributed on the inner wall of the material-reducing sink 1-4; based on such a setting, the screw plug pre-tightening piece 1 is conveniently controlled to facilitate the rotational assembly on the shell 5.

[0063] Further, in the utility model, the screw plug pre-tightening piece 1 is screwed in the assembly sink 5-2; such arrangement facilitates the assembly of the screw plug pre-tightening piece 1 on the shell 5, and a waist-shaped welding hole 5-1 is arranged on the shell body 5-3; the waist-shaped welding hole 5-1 is communicated with the assembly sink 5-2; in the utility model, after the screw plug pre-tightening piece 1 is installed to the set position on the shell 5, the screw plug pre-tightening piece 1 and the shell 5 are welded integrally through ultrasonic welding, so that the torque is kept stable; wherein the symmetrical waist-shaped welding hole 5-1 can adjust the welding position of the screw plug pre-tightening piece 1 of different dampers torque; and the waist-shaped welding hole 5-1 also has a good avoiding effect, because the material will be deformed when welding, the waist-shaped welding hole 5-1 has a good avoiding effect.

[0064] Specifically:

[0065] The damper disclosed by the utility model does not arrange a traditional elastic element, and the constituent parts include a screw plug pre-tightening piece 1, a rotation-stopping element 2, a friction element 3, a rotating element 4 and a shell 5.

[0066] The screw plug pre-tightening piece 1 extrudes the stacked elements to form pressure, and the rotating element 4 drives the friction element 3 to generate torque when the shell 5 is fixed and the rotating element 4 rotates.

[0067] The screw plug pre-tightening piece 1 and the shell 5 are welded integrally through ultrasonic welding, so that the screw plug pre-tightening piece 1 is prevented from being loose in the axial direction; the torque is kept stable; and the friction element 3 and the surface in contact with the friction element 3 are uniformly oiled.

[0068] The screw plug pre-tightening piece 1 extrudes the stacked elements to form pressure, the screw plug pre-tightening piece 1 is threadedly connected with the shell 5, the thread pre-tightening force of the screw plug pre-tightening piece 1 can be adjusted like the force of an elastic element, and the six pre-tightening protrusions 1-1 of the screw plug pre-tightening piece 1 can also generate a certain clamping force by the elastic-plastic deformation of the rotation-stopping element 2.

[0069] The four auxiliary assembly grooves 1-2 in the inner hole of the screw plug pre-tightening piece 1 facilitate force application and rotation and assembly with the shell 5.

[0070] The screw plug pre-tightening piece 1 and the shell 5 are welded integrally through ultrasonic welding, so that the torque is kept stable, and the symmetrical waist-shaped welding hole 5-1 can adjust the welding position of the screw plug pre-tightening piece 1 of different dampers torque.

[0071] The rotating element 4 drives the friction element 3 to generate torque when the shell 5 is fixed and the rotating element 4 rotates. The friction element 3 can be in an integral structure with the rotation-stopping element 2 or the rotating element 4, and the friction element 3 can be a carbon fiber material or other friction material.

[0072] The friction element 3 and the surface in contact with the friction element 3 are uniformly oiled; oiling lubrication can reduce the wear and heating of the friction element 3 and reduce the influence of high and low temperatures on the torque of the damper.

[0073] The damper provides pressure by the elastic-plastic deformation of the plastic piece of the not less than three pre-tightening protrusions 1-1 of the screw plug pre-tightening piece 1; the damper provides pressure by the elastic-plastic deformation of the overall plastic piece due to the thin plastic wall thickness of the screw plug pre-tightening piece 1.

[0074] The damper disclosed by the utility model has no elastic element, reduces the space for installing the elastic element, has a smaller overall volume, has a reduced number of damper parts, a simple structure, a reduced number of parts, is convenient to assemble, and is low in cost.

[0075] Obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, and various non-essential improvements made by adopting the method concept and technical scheme of the utility model are within the protection scope of the utility model.

Claims

1. A damper for an electric strut, characterized in that, Includes the housing and the screw plug preload component connected to the housing; The outer casing includes an outer casing body; the outer casing body is provided with an assembly groove; a friction stop mechanism is provided in the assembly groove; The preloaded screw plug is connected to the friction stop mechanism via a preload component; the preload component includes a preload protrusion on the preloaded screw plug; the preloaded screw plug presses against the friction stop mechanism via the preload protrusion.

2. The damper for an electric strut according to claim 1, characterized in that, The friction stop mechanism includes a transmission friction component and an anti-rotation element; the transmission friction component and the anti-rotation element are arranged in close contact with each other.

3. A damper for an electric strut according to claim 2, characterized in that, The transmission friction component includes a rotating element and a friction element, wherein the rotating element contacts the anti-rotation element through the friction element.

4. A damper for an electric strut according to claim 3, characterized in that, The friction element and the anti-rotation element or the rotation element are an integral structure.

5. A damper for an electric strut according to claim 4, characterized in that, The friction element and the rotating element are an integral structure; the rotating element is connected to the friction element through a snap-fit ​​mechanism; the snap-fit ​​mechanism includes a snap-fit ​​groove on the rotating element and a snap-fit ​​protrusion on the friction element, and the friction element is inserted into the rotating element through the snap-fit ​​protrusion.

6. A damper for an electric strut according to any one of claims 1-5, characterized in that, The screw plug preload component is made of plastic.

7. A damper for an electric strut according to any one of claims 2-5, characterized in that, The friction stop mechanism includes two anti-rotation elements; the transmission friction component includes two friction elements, which are distributed on both sides of the rotating element; the two anti-rotation elements are distributed on both sides of the transmission friction component.

8. A damper for an electric strut according to any one of claims 1-5, characterized in that, The screw plug preload has at least three preload protrusions, which are evenly distributed along the circumference of the screw plug preload.

9. A damper for an electric strut according to any one of claims 1-5, characterized in that, The preloaded screw plug includes a screw plug body; the screw plug body is provided with a material reduction groove on the side away from the friction stop mechanism; The inner wall of the material reduction settling tank is provided with an auxiliary assembly groove.

10. A damper for an electric strut according to any one of claims 1-5, characterized in that, The pre-tightening plug is screwed into the placement groove; the outer shell body is provided with a waist-shaped welding hole; the waist-shaped welding hole is connected to the placement groove.

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