Electric telescopic rod

Abstract

The utility model provides an electric telescopic rod. The electric telescopic rod comprises a first end part and a second end part, the second end part is arranged to be close to or far away from the first end part; one of the first end part and the second end part is connected to a door part of the vehicle, and the other one is connected to a vehicle body of the vehicle; the driving device is arranged at the first end part and is used for providing driving force; the device comprises a driving device and a lead screw and nut assembly, the lead screw and nut assembly comprises a lead screw and a nut matched with the lead screw, the driving device is used for driving the lead screw to rotate, and the nut moves in the axis direction of the lead screw through rotation of the lead screw; when the nut moves in the axis direction of the lead screw, the second end is driven to be close to or away from the first end.

Description

Technical Field

[0001] The present invention relates to an electric telescopic rod. Background Art

[0002] In order to facilitate users to open and close the tailgate of the car, more and more vehicles are provided with an electric telescopic rod, which can realize the automatic opening and closing of the tailgate of the car.

[0003] Since the weight of the tailgate is large and the tailgate switch requires a large working stroke, when the tailgate is opened and closed by the electric telescopic rod, it is easy to cause the electric telescopic rod to bend or even be damaged. This situation is more obvious in some off-road vehicles. Utility Model Content

[0004] In order to solve one of the above technical problems, the present disclosure provides an electric telescopic rod.

[0005] According to one aspect of the present disclosure, there is provided an electric telescopic rod, comprising:

[0006] a first end portion;

[0007] a second end portion, the second end portion being arranged to be able to approach or be away from the first end portion; one of the first end portion and the second end portion being connected to a door component of a vehicle, and the other being connected to a body of the vehicle;

[0008] a driving device, the driving device being disposed at the first end portion and being used to provide a driving force; and

[0009] A screw-nut assembly, the screw-nut assembly comprising a screw and a nut matched with the screw, the driving device being used to drive the screw to rotate, and the nut is moved along the axial direction of the screw through the rotation of the screw;

[0010] When the nut moves along the axial direction of the screw rod, the second end is driven to approach or move away from the first end.

[0011] According to the electric telescopic rod of at least one embodiment of the present disclosure, a first ball socket is formed at the first end portion, and an opening of the first ball socket faces a side of the electric telescopic rod.

[0012] According to the electric telescopic rod of at least one embodiment of the present disclosure, a second ball socket is formed at the second end portion, and an opening of the second ball socket faces a side of the electric telescopic rod.

[0013] According to at least one embodiment of the electric telescopic rod of the present disclosure, the electric telescopic rod further includes a guide tube, wherein an inner wall of the guide tube is provided with a guide portion along an axial direction thereof, and the guide portion is used to guide the nut to inhibit the rotation of the nut.

[0014] According to the electric telescopic rod of at least one embodiment of the present disclosure, the second end portion is connected to one end of the connecting tube, the nut is connected to the other end of the connecting tube, and at least a portion of the connecting tube is slidably disposed in the guide tube.

[0015] According to the electric telescopic rod of at least one embodiment of the present disclosure, at least a portion of the screw rod is disposed in the connecting tube, and the screw rod is configured to be rotatable relative to the connecting tube and movable relative to the connecting tube along its axial direction.

[0016] According to the electric telescopic rod of at least one embodiment of the present disclosure, a limit piece is provided at one end of the screw rod located inside the connecting tube, and when the limit piece contacts the nut, the distance between the first end and the second end is maximum.

[0017] According to the electric telescopic rod of at least one embodiment of the present disclosure, a sealing component is provided between the screw rod and the guide tube.

[0018] According to the electric telescopic rod of at least one embodiment of the present disclosure, a connecting portion is provided at one end of the guide tube close to the first end, the connecting portion is connected to the first end via a housing portion, and the driving device is located inside the housing portion.

[0019] According to at least one embodiment of the electric telescopic rod of the present disclosure, the connecting portion is provided with a bearing seat, and the screw rod is rotatably supported in the bearing seat through a bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0021] Figure 1 It is a schematic structural diagram of an electric telescopic rod according to one embodiment of the present disclosure.

[0022] Figure 2 It is a structural schematic diagram of an electric telescopic rod according to an embodiment of the present disclosure at another angle.

[0023] Figure 3 It is a structural schematic diagram of a part of the structure of an electric telescopic rod according to one embodiment of the present disclosure.

[0024] Figure 4 It is a schematic diagram of an exploded structure of a part of the structure of an electric telescopic rod according to one embodiment of the present disclosure.

[0025] Figures 5 to 8It is a structural schematic diagram of a screw rod and nut assembly of an electric telescopic rod according to an embodiment of the present disclosure.

[0026] The specific reference numerals in the figure are:

[0027] 110 first end

[0028] 111 First Ball Socket

[0029] 112 Lead hole

[0030] 120 second end

[0031] 121 Second ball socket

[0032] 130 screw rod and nut assembly

[0033] 131 screw

[0034] 132 Wire Mother

[0035] 133 limiter

[0036] 140 drive device

[0037] 141 reducer

[0038] 150 guide tube

[0039] 160 connecting pipe

[0040] 170 connection

[0041] 180 Shell

[0042] 190 Sealing parts

[0043] 195 bearing seat

[0044] 196 Transition components. DETAILED DESCRIPTION

[0045] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0046] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] Unless otherwise specified, the exemplary embodiments / embodiments shown will be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, the features of the various embodiments / embodiments can be combined, separated, interchanged and / or rearranged without departing from the technical concept of the present disclosure.

[0048] The use of cross-hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the described order. In addition, the same figure numbers represent the same components.

[0049] When a component is referred to as being "on" or "over," "connected to," or "coupled to" another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being "directly on," "directly connected to," or "directly coupled to" another component, there are no intervening components. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0050] For descriptive purposes, the present disclosure may use spatially relative terms such as "under," "beneath," "under," "down," "over," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "under" or "beneath" other components or features would subsequently be positioned "over" the other components or features. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0051] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0052] Figure 1 It is a schematic structural diagram of an electric telescopic rod according to one embodiment of the present disclosure. Figure 2 It is a structural schematic diagram of an electric telescopic rod according to an embodiment of the present disclosure at another angle.

[0053] like Figure 1 and Figure 2 As shown, the present disclosure provides an electric telescopic rod, which may include components such as a first end 110, a second end 120, a screw rod and nut assembly 130, and a driving device 140.

[0054] One of the first end 110 and the second end 120 is connected to a door component of the vehicle (the door component includes a side door and a tailgate of the vehicle), and the other is connected to a body of the vehicle. In a specific embodiment, the first end 110 can be connected to the body of the vehicle, and accordingly, the first end 110 can be a relatively fixed component; the second end 120 can be connected to the tailgate of the vehicle, and accordingly, the second end 120 can be a movable component.

[0055] At this time, when the driving device 140 is activated and causes the second end 120 to move away from the first end 110, the distance between the second end 120 and the first end 110 becomes larger and the tailgate is opened; on the contrary, when the driving device 140 rotates in the opposite direction and causes the second end 120 to move closer to the first end 110, the distance between the second end 120 and the first end 110 becomes smaller and the tailgate is closed.

[0056] In other words, the electric telescopic rod includes a length direction, which can also be the axial direction of the guide tube 150, the axial direction of the connecting tube 160, and the axial direction of the screw rod 131 described below; accordingly, the second end 120 can approach or move away from the first end 110 along the length direction.

[0057] In a specific embodiment, the first end portion 110 is formed with a first ball socket 111, and the opening of the first ball socket 111 faces the side of the electric telescopic rod; thereby facilitating the insertion of the first ball head on the vehicle body into the first ball socket 111, and facilitating the installation of the electric telescopic rod. In the present disclosure, the first ball head and the first ball socket 111 can also be clamped by a ball socket retaining spring to prevent the first ball head from falling off the first ball socket 111.

[0058] Similarly, the second end portion 120 is formed with a second ball socket 121, and the opening of the second ball socket 121 faces the side of the electric telescopic rod; thereby facilitating the insertion of the second ball head on the vehicle door into the second ball socket 121, and facilitating the installation of the electric telescopic rod. In the present disclosure, the second ball head and the second ball socket 121 can also be clamped by a ball socket retaining spring to prevent the first ball head from falling off from the second ball socket 121.

[0059] Figure 3 It is a structural schematic diagram of a part of the structure of an electric telescopic rod according to one embodiment of the present disclosure. Figure 4 It is a schematic diagram of an exploded structure of a part of the structure of an electric telescopic rod according to one embodiment of the present disclosure.

[0060] Figure 3 It is a structural schematic diagram of a part of the structure of an electric telescopic rod according to one embodiment of the present disclosure. Figure 4 It is a schematic diagram of an exploded structure of a part of the structure of an electric telescopic rod according to one embodiment of the present disclosure.

[0061] like Figure 3 and Figure 4 As shown, the electric telescopic rod of the present disclosure further includes a guide tube 150. In the present disclosure, the guide tube 150 may be in a round tube shape, and one end thereof is used for inserting the connecting tube 160, and the other end is provided with a connecting portion 170. More specifically, the connecting portion 170 is fixedly provided at one end of the guide tube 150 close to the first end portion 110, and the connecting portion 170 is connected to the first end portion 110 via a shell portion 180, and the driving device 140 is located in the shell portion 180.

[0062] More specifically, the driving device 140 is arranged at the first end portion 110 and is located inside the shell portion 180, and can be used to provide driving force; in the present disclosure, the shell portion 180 can be formed into a cylindrical shape, and at least a portion of the first end portion 110 can be inserted into the interior of the shell portion 180, and accordingly, a sealing ring can be provided between the outer peripheral surface of the first end portion 110 and the inner wall of the shell portion 180 to prevent liquid and the like from entering the interior of the shell portion 180.

[0063] In the present disclosure, the first end portion 110 further includes a lead hole 112 , and the driving device 140 may be a motor. Accordingly, a cable connected to the motor can pass through the lead hole 112 , thereby facilitating the circuit connection of the electric telescopic rod of the present disclosure.

[0064] The output shaft of the motor is connected to the input shaft of the reducer 141, and the output shaft of the reducer 141 can drive the screw rod 131 to rotate. For example, one end of the screw rod 131 is formed as a spline, and the output shaft of the reducer 141 can be formed as a spline groove, so that the screw rod 131 can be inserted into the output shaft of the reducer 141, thereby realizing the transmission connection between the reducer 141 and the screw rod 131.

[0065] Figures 5 to 8 It is a structural schematic diagram of a screw rod and nut assembly of an electric telescopic rod according to an embodiment of the present disclosure.

[0066] like Figures 5 to 8 As shown, the screw nut assembly 130 includes a screw 131 and a nut 132 cooperating with the screw 131 , and the driving device 140 is used to drive the screw 131 to rotate, and the nut 132 moves along the axial direction of the screw 131 through the rotation of the screw 131 .

[0067] When the nut 132 moves along the axial direction of the screw rod 131 , the second end portion 120 is driven to approach or move away from the first end portion 110 .

[0068] Specifically, the inner wall of the guide tube 150 is provided with a guide portion along its axial direction, and the guide portion is used to guide the nut 132 to inhibit the rotation of the nut 132. That is, when the electric telescopic rod of the present disclosure is in use, the nut 132 can only slide along the length direction and cannot rotate.

[0069] In a specific embodiment, the guide portion may be a groove, and accordingly, a protrusion is formed on the outer wall surface of the nut 132; of course, the guide portion may also be formed as a protrusion, in which case the outer surface of the nut 132 may be formed as a groove.

[0070] More preferably, the interior of the guide tube 150 may be formed into spline grooves, and the guide portions may be formed by the spline grooves; accordingly, the outer peripheral surface of the nut 132 may be formed into a spline structure.

[0071] In the present disclosure, the screw rod 131 is rotatably disposed in the nut 132 and threadably engaged with the nut 132. In other words, when the screw rod 131 rotates, the nut 132 can generate an axial movement along the screw rod 131.

[0072] The second end portion 120 is connected to one end of the connecting tube 160, the nut 132 is connected to the other end of the connecting tube 160, and at least a portion of the connecting tube 160 is slidably disposed in the guide tube 150, that is, when the connecting tube 160 is inserted into the guide tube 150, the first end portion 110 and the second end portion 120 are close to each other, conversely, when the connecting tube 160 is pulled out of the guide tube 150, the first end portion 110 and the second end portion 120 are far away from each other.

[0073] At least a portion of the screw rod 131 is disposed in the connecting tube 160 , and the screw rod 131 is configured to be rotatable relative to the connecting tube 160 and movable relative to the connecting tube 160 along an axial direction thereof.

[0074] Specifically, the inner diameter of the connecting tube 160 is greater than the outer diameter of the screw rod 131 , and the axes of the screw rod 131 and the connecting tube 160 are the same, so that the connecting tube 160 will not interfere with the movement of the screw rod 131 .

[0075] A limiting member 133 is provided at one end of the screw rod 131 located inside the connecting tube 160, and accordingly, the limiting member 133 can cooperate with the nut 132 to limit the position of the screw rod 131. Specifically, when the limiting member 133 contacts the nut 132, the distance between the first end 110 and the second end 120 is the largest, and at this time, the electric telescopic rod is at the maximum stroke.

[0076] In the present disclosure, the stopper 133 can slide and rotate along the inner wall of the connecting tube 160, that is, the stopper 133 can be fixed to the screw rod 131. Of course, the stopper 133 can also be rotatably disposed at the other end of the screw rod 131 through a bearing, so that the stopper 133 can slide relative to the connecting tube 160.

[0077] A sealing component 190 is provided between the screw rod 131 and the guide tube 150 , thereby enabling the movement space of the screw rod 131 to be in a sealed state, and accordingly, the movement life of the screw rod 131 can be increased.

[0078] The screw rod 131 is rotatably supported on the bearing seat 195 through a bearing. The bearing seat 195 is arranged adjacent to the connecting portion 170, and the bearing seat 195 and the connecting portion 170 cannot rotate relative to each other. The outer ring of the bearing can be limited in position by the bearing seat 195 and the connecting portion 170.

[0079] In a preferred embodiment, the screw rod 131 is provided with a shaft shoulder, a fixing seat is provided on the shaft shoulder, and the sealing component 190 can be sleeved on the fixing seat. In this case, the fixing seat can also limit the position of the inner ring of the bearing. Moreover, a retaining spring can also be provided on the screw rod 131, and the position of the other end of the inner ring of the bearing can be limited by the retaining spring.

[0080] The bearing seat 195 is provided with a transition component 196 , and the reducer 141 can be fixedly connected to the transition component 196 , thereby achieving fixation of the reducer 141 .

[0081] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. An electric telescopic rod, characterized in that: include: a first end portion; a second end portion, the second end portion being arranged to be able to approach or be away from the first end portion; one of the first end portion and the second end portion being connected to a door component of a vehicle, and the other being connected to a body of the vehicle; a driving device, the driving device being disposed at the first end portion and being used to provide a driving force; A screw-nut assembly, the screw-nut assembly comprising a screw and a nut matched with the screw, the driving device is used to drive the screw to rotate, and the nut moves along the axial direction of the screw through the rotation of the screw; A guide tube, wherein the inner wall of the guide tube is provided with a guide portion along the axial direction thereof, and the guide portion is used to guide the nut to inhibit the rotation of the nut; wherein the guide portion is a groove, and a protrusion is formed on the outer wall surface of the nut; When the nut moves along the axial direction of the screw rod, it drives the second end portion to approach or move away from the first end portion; the second end portion is connected to one end of the connecting tube, the nut is connected to the other end of the connecting tube, and at least a portion of the connecting tube is slidably disposed in the guide tube.

2. The electric telescopic rod according to claim 1, characterized in that: The first end portion is formed with a first ball socket, and an opening of the first ball socket faces the side of the electric telescopic rod.

3. The electric telescopic rod according to claim 1, characterized in that: The second end portion is formed with a second ball socket, and the opening of the second ball socket faces the side of the electric telescopic rod.

4. The electric telescopic rod according to claim 1, characterized in that: At least a portion of the screw rod is disposed in the connecting tube, and the screw rod is configured to be rotatable relative to the connecting tube and movable relative to the connecting tube along an axial direction thereof.

5. The electric telescopic rod according to claim 1, characterized in that: A limiting piece is provided at one end of the screw rod located inside the connecting tube, and when the limiting piece contacts the nut, the distance between the first end and the second end is maximum.

6. The electric telescopic rod according to claim 1, characterized in that: A sealing component is arranged between the screw rod and the guide tube.

7. The electric telescopic rod according to claim 1, characterized in that: A connecting portion is disposed at one end of the guide tube close to the first end portion, the connecting portion is connected to the first end portion via a shell portion, and the driving device is located inside the shell portion.

8. The electric telescopic rod according to claim 7, characterized in that: The connecting portion is provided with a bearing seat, and the screw rod is rotatably supported in the bearing seat through a bearing.

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