Electric push rod structure for touring car roof

Abstract

The electric push rod structure comprises an outer sleeve and an inner sleeve, the inner sleeve is connected with the inner portion of the outer sleeve in a sleeved mode, a lifting mechanism is fixedly arranged between the outer sleeve and the inner sleeve, an annular oil storage cavity is formed in the bottom of the inner sleeve, lubricating oil is filled in the annular oil storage cavity, and the lifting mechanism is connected with the inner sleeve in a sleeved mode. An oil seepage hole is formed in the bottom of the annular oil storage cavity. According to the electric push rod for the top of the motor home, through the connecting pieces arranged at the top and the bottom, connection and installation between the electric push rod and the ceiling of the motor home are facilitated, the convenience of installation of the electric push rod is effectively improved, the annular oil storage cavity is formed in the inner sleeve of the electric push rod, and the annular oil storage cavity makes contact with the lead screw through the extrusion sponge; in the rotating process of the lead screw, lubricating oil in the extrusion sponge can lubricate the lead screw, friction between the lead screw and the lead screw base is reduced, and the service life of the electric push rod is prolonged.

Description

Technical Field

[0001] The utility model relates to an electric push rod structure for a motorhome roof, belonging to the technical field of motorhome accessories. Background Technique

[0002] With the improvement of people's living standards, more and more people are fond of motorhomes, which are means of transportation for self-driving tourism. During the construction of motorhomes, in order to improve their air permeability, the tops of motorhomes generally adopt an openable design. At present, the opening of the motorhome roof is mainly achieved by using an electric push rod to lift it open.

[0003] During the use of the current electric push rod for the motorhome roof, we found that when installing the electric push rod, it needs to be installed with the help of a mounting seat, and it is impossible to directly install the electric push rod on the vehicle body. At the same time, there is no lubricating structure for the lifting inside the electric push rod. During the long-term telescopic process of the electric push rod, the wear between the lead screw and the lead screw seat is increased, affecting the service life of the electric push rod. Content of the Utility Model

[0004] The purpose of the utility model is to provide an electric push rod structure for a motorhome roof to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: It includes an outer sleeve and an inner sleeve. The inner sleeve is sleeved and connected inside the outer sleeve. An elevating mechanism is fixedly arranged between the outer sleeve and the inner sleeve. An annular oil storage cavity is opened at the bottom of the inner sleeve. Lubricating oil is filled inside the annular oil storage cavity. An oil seepage hole is opened at the bottom of the annular oil storage cavity. A squeezing sponge is fixedly arranged inside the oil seepage hole. Fixed seats are fixedly arranged at the bottom end of the outer sleeve and the top end of the inner sleeve respectively. A connecting piece is fixedly connected to the surface of the fixed seat.

[0006] In the above electric push rod structure for a motorhome roof, the elevating mechanism includes a lead screw seat, a lead screw and a servo motor. The bottom end inside the outer sleeve is rotatably connected with the lead screw. The bottom end of the inner sleeve is fixedly installed with the lead screw seat. The lead screw is in threaded connection with the lead screw seat, and the lead screw is in contact connection with the squeezing sponge. The bottom of the outer sleeve is fixedly installed with a servo motor. The output shaft of the servo motor is fixedly connected with the bottom end of the lead screw through a speed reducer.

[0007] In the above electric push rod structure for a motorhome roof, a power cord is fixedly arranged at the bottom of the outer sleeve. The servo motor is electrically connected to an external power supply through the power cord.

[0008] In the above electric push rod structure for a motorhome roof, an assembly groove is opened on the surface of the fixed seat. A fixing block is fixedly arranged at the end of the connecting piece. The fixing block is nested with the assembly groove.

[0009] In the above-mentioned electric push rod structure for a motorhome roof, an installation groove is provided in the middle of the fixed block, two connecting blocks are nested inside the installation groove, a return spring is fixedly installed between the two connecting blocks, a fixed rod is fixedly provided at the center of one side of the two connecting blocks, fixing holes are provided on both sides of the assembly groove, and the fixed rod passes through the installation groove and is inserted into the fixing holes.

[0010] In the above-mentioned electric push rod structure for a motorhome roof, a sealing ring is sleeved at the connection between the outer sleeve and the inner sleeve.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For the electric push rod used on the top of the motorhome, through the connecting pieces provided at the top and the bottom, it is convenient to connect and install the electric push rod with the motorhome roof, effectively improving the convenience of installing the electric push rod.

[0013] 2. An annular oil storage cavity is provided in the inner sleeve of the electric push rod, and the annular oil storage cavity contacts the lead screw through an extrusion sponge. During the rotation of the lead screw, the lubricating oil in the extrusion sponge can lubricate the lead screw, reducing the friction between the lead screw and the lead screw seat and improving the service life of the electric push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of an electric push rod structure for a motorhome roof according to the present utility model;

[0015] Figure 2 It is a front structural diagram of an electric push rod structure for a motorhome roof according to the present utility model;

[0016] Figure 3 It is an internal structural diagram of an electric push rod structure for a motorhome roof according to the present utility model;

[0017] Figure 4 It is an electric push rod structure for a motorhome roof according to the present utility model Figure 3 The partial enlarged view at A in it.

[0018] In the figure: 1. Outer sleeve; 2. Inner sleeve; 3. Sealing ring; 4. Fixed seat; 5. Connecting piece; 6. Power cord; 7. Annular oil storage cavity; 8. Extrusion sponge; 9. Lead screw seat; 10. Lead screw; 11. Servo motor; 12. Fixed block; 13. Fixing hole; 14. Fixed rod; 15. Connecting block; 16. Return spring; 17. Installation groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-4 , the present invention provides a technical solution for an electric push rod structure for a motorhome roof:

[0021] According to Figures 1-4 shown, it includes an outer sleeve 1 and an inner sleeve 2. The inner sleeve 2 is sleeved and connected inside the outer sleeve 1. A lifting mechanism is fixedly arranged between the outer sleeve 1 and the inner sleeve 2. An annular oil storage cavity 7 is opened at the bottom of the inner sleeve 2. Lubricating oil is filled inside the annular oil storage cavity 7. An oil seepage hole is opened at the bottom of the annular oil storage cavity 7. A squeezing sponge 8 is fixedly arranged inside the oil seepage hole. Fixed seats 4 are fixedly arranged at the bottom end of the outer sleeve 1 and the top end of the inner sleeve 2 respectively. A connecting piece 5 is fixedly connected to the surface of the fixed seat 4.

[0022] An annular oil storage cavity 7 is opened in the inner sleeve 2 of the electric push rod. The annular oil storage cavity 7 contacts the lead screw 10 through the squeezing sponge 8. During the rotation of the lead screw 10, the lubricating oil in the squeezing sponge 8 can lubricate the lead screw 10, reduce the friction between the lead screw 10 and the lead screw seat 9, and improve the service life of the electric push rod.

[0023] According to Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the lifting mechanism includes a lead screw seat 9, a lead screw 10 and a servo motor 11. The bottom end inside the outer sleeve 1 is rotatably connected to the lead screw 10. The bottom end of the inner sleeve 2 is fixedly installed with a lead screw seat 9. The lead screw 10 is threadedly connected to the lead screw seat 9, and the lead screw 10 is in contact connection with the squeezing sponge 8. The bottom of the outer sleeve 1 is fixedly installed with a servo motor 11. The output shaft of the servo motor 11 is fixedly connected to the bottom end of the lead screw 10 through a reducer.

[0024] Specifically, the telescopic movement of the electric push rod is controlled by the lifting assembly.

[0025] A power cord 6 is fixedly arranged at the bottom of the outer sleeve 1. The servo motor 11 is electrically connected to an external power supply through the power cord 6.

[0026] Through the power cord 6, it is convenient for the electric push rod to be connected to the vehicle power supply through the vehicle-mounted switch.

[0027] According to Figure 1 , Figure 2 , Figure 3 andFigure 4 As shown, an assembly groove is formed on the surface of the fixed seat 4, and a fixed block 12 is fixedly provided at the end of the connecting member 5. The fixed block 12 is nested with the assembly groove.

[0028] An installation groove 17 is formed in the middle of the fixed block 12. Two connecting blocks 15 are nested inside the installation groove 17. A return spring 16 is fixedly installed between the two connecting blocks 15. Fixing rods 14 are fixedly provided at the centers of one sides of the two connecting blocks 15. Fixing holes 13 are formed on both sides of the assembly groove. The fixing rods 14 pass through the installation groove 17 and are inserted and connected with the fixing holes 13.

[0029] Specifically, the two connecting blocks 15 are separated by squeezing the return spring 16, and the fixing rods 14 and the fixing holes 13 are inserted and fixed by the movement of the connecting blocks 15, which facilitates the assembly between the connecting member 5 and the electric push rod.

[0030] A sealing ring 3 is sleeved at the connection between the outer sleeve 1 and the inner sleeve 2. Specifically, by sleeving the sealing ring 3 at the connection, the sealing performance of the connection is effectively improved, and the entry of dust into the interior of the electric push rod from the gap is reduced.

[0031] Working principle: For an electric push rod structure for a motorhome roof of the present utility model, during the use of the electric push rod, first, according to the installation position of the motorhome roof, the two connecting members 5 are connected to the fixed seat 4. The fixing rods 14 on both sides of the fixed block 12 are pressed into the installation groove 17. Then, the fixed block 12 is inserted into the assembly groove. The two fixing rods 14 are inserted and fixed with the fixing holes 13 by the extrusion force of the return spring 16. Then, the connecting member 5 is installed on the top of the motorhome shed through screws and connected to the vehicle-mounted power supply through the power cord 6. When it is necessary to open the motorhome roof, first, the servo motor 11 is turned on. The rotation of the lead screw 10 is driven by the cooperation of the reducer of the servo motor 11. The lifting of the lead screw seat 9 is driven by the rotation of the lead screw 10. The lifting of the lead screw seat 9 drives the lifting of the inner sleeve 2. During the lifting process of the inner sleeve 2, the lubricating oil in the sponge 8 is squeezed to lubricate the lead screw 10, reducing the friction between the lead screw 10 and the lead screw seat 9 and improving the service life of the electric push rod.

[0032] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. An electric push rod structure for a motorhome roof, comprising an outer sleeve (1) and an inner sleeve (2), characterized in that: The inner sleeve (2) is sleeved and connected to the inner sleeve (1), a lifting mechanism is fixedly arranged between the outer sleeve (1) and the inner sleeve (2), an annular oil storage cavity (7) is provided at the bottom of the inner sleeve (2), the interior of the annular oil storage cavity (7) is filled with lubricating oil, an oil seepage hole is provided at the bottom of the annular oil storage cavity (7), a squeezing sponge (8) is fixedly arranged inside the oil seepage hole, a fixing seat (4) is fixedly arranged at the bottom end of the outer sleeve (1) and the top end of the inner sleeve (2), and a connecting piece (5) is fixedly connected to the surface of the fixing seat (4).

2. The electric push rod structure for a RV roof according to claim 1, characterized in that: The lifting mechanism comprises a screw seat (9), a screw (10) and a servo motor (11); the bottom end of the outer sleeve (1) is rotatably connected to the screw (10); the bottom end of the inner sleeve (2) is fixedly mounted with the screw seat (9); the screw (10) is threadedly connected to the screw seat (9); and the screw (10) is contact-connected with the extruded sponge (8); the bottom of the outer sleeve (1) is fixedly mounted with the servo motor (11); the output shaft of the servo motor (11) is fixedly connected to the bottom end of the screw (10) via a reducer.

3. The electric push rod structure for a RV roof according to claim 2, characterized in that: A power line (6) is fixedly provided at the bottom of the outer sleeve (1), and the servo motor (11) is electrically connected to an external power source via the power line (6).

4. The electric push rod structure for a RV roof according to claim 1, characterized in that: The surface of the fixing seat (4) is provided with an assembly groove, and a fixing block (12) is fixedly provided at the end of the connecting member (5), and the fixing block (12) is nested and connected with the assembly groove.

5. The electric push rod structure for a RV roof according to claim 4, characterized in that: A mounting groove (17) is provided in the middle of the fixing block (12), two connecting blocks (15) are nested inside the mounting groove (17), a return spring (16) is fixedly installed between the two connecting blocks (15), a fixing rod (14) is fixedly provided at the center of one side of the two connecting blocks (15), fixing holes (13) are provided on both sides of the assembly groove, and the fixing rod (14) passes through the mounting groove (17) and is interlaced and connected with the fixing hole (13).

6. The electric push rod structure for a RV roof according to claim 1, characterized in that: A sealing ring (3) is sleeved at the connection between the outer sleeve (1) and the inner sleeve (2).

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