Lateral expansion floor lifting device for motor home

Abstract

The utility model relates to the field of touring car equipment, in particular to a touring car side expansion floor lifting device which comprises a car body, a chassis, two sets of side carriages and a plurality of sets of guide rails, the chassis is arranged below the car body, and the two sets of side carriages are symmetrically arranged on the top side of the chassis in the middle section of the car body. The two groups of side carriages can slide and extend outwards under the support of the guide rails, and lifting floors capable of lifting and sliding are arranged on the top side of the chassis below the two groups of side carriages; and two groups of transmission shafts are arranged in the middle of the chassis below the two groups of lifting floors. The lifting floor structure has the advantages that by means of the lifting floor structure and the transmission assembly matched with the lifting floor structure, the flat state of the inner floor of the compartment can be kept in the expanding and retracting states of the side compartment, the problem that the floor is uneven due to expanding of the side compartment is solved, movement of people in the vehicle is greatly facilitated, the risk of stumbling during walking is reduced, and the safety of the vehicle is improved. And the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of RV equipment, and particularly relates to a lifting device for the side-expanded floor of an RV. Background Technique

[0002] The side-expanded compartment of an RV is a compartment structure installed on both sides of the RV body, which can be expanded outward when needed to increase the internal space of the RV. When not in use, it fits tightly with the main body of the RV, facilitating driving and reducing wind resistance; when arriving at a camping ground or other places, the user can make it stretch outwards through specific operations (such as electric control, manual operation, etc.) to expand an additional space, which can be used to arrange more furniture (such as sofas, beds, etc.) or form a more spacious activity area, improving the comfort and functionality of the internal space of the RV and meeting various needs such as living and leisure.

[0003] Since the current side-expanded compartment is of a box structure, in order to facilitate the overall retraction into the vehicle body, the bottom plate of the side compartment needs to be higher than the bottom plate of the central compartment. Therefore, after the side compartment is expanded outwards, the bottom plate of the side compartment is higher than the bottom plate of the central compartment, resulting in a concave pit structure in the empty part of the central bottom plate and a concave pit at the connection between the side compartment and the central compartment, which cannot ensure the flatness of the bottom plate inside the compartment and causes inconvenience for the people inside the vehicle to move. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lifting device for the side-expanded floor of an RV to solve the above problems. When the side compartment is in the retracted state, a liftable and movable bottom plate is arranged corresponding to the side compartment on the inner side of the chassis. When the side compartment is expanded outwards and a concave pit is left on the central bottom plate, the liftable floor is lifted to be flush with the bottom plate of the side compartment, so as to fill the concave pit of the bottom plate caused by the removal of the side compartment, ensure the flatness effect of the bottom plate in the space of the RV, and facilitate the movement of people. The details are described below.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lifting device for the side-expanded floor of an RV provided by the utility model includes a vehicle body, a chassis, two groups of side compartments and several groups of guide rails. The chassis is arranged below the vehicle body. Two groups of side compartments are symmetrically arranged on the top side of the chassis in the middle section of the vehicle body, and the two groups of side compartments can slide outwards and expand under the support of the guide rails. Liftable and slidable liftable floors are arranged on the top side of the chassis below the two groups of side compartments;

[0007] Two groups of transmission shafts are arranged in the middle of the chassis below the two groups of liftable floors. Lifting cams for supporting the up and down movement of the liftable floors are fixed at the ends of the transmission shafts. A connecting component is arranged below the lifting cams, and a transmission seat is installed on the chassis at the bottom side of the connecting component. A sliding part is longitudinally slidably arranged between the two groups of transmission seats, and a driving component for supporting the longitudinal sliding of the sliding part is arranged in the middle of the chassis.

[0008] When using the above-mentioned lifting device for the side-expanded floor of a motorhome, when the side compartment slides outwards along the guide rail and it is necessary to move the lifting floor upwards to a state flush with the bottom plate of the side compartment, the driving motor drives the driving gear to rotate. By using the driving rod at the eccentric position on the end face of the driving gear to cooperate with the driving slot, the driving rod is used to support the overall sliding part to horizontally slide along the length direction of the sliding part. At this time, the meshing effect between the rack on the top side of the sliding part and the driving gears on the two transmission seats is utilized, so as to drive the driving gears at both ends of the sliding part to rotate synchronously. At this time, the driving gear drives the cam slide rod with a bias upwards through the transmission rod at its end. Furthermore, the cam slide rod with a bias slides upwards under the guiding action of the sliding of the support seat, so as to drive the two settlement cam connecting pieces to move upwards by the cam slide rod with a bias and push the lifting cam to rotate. The lifting cam is supported by the transmission shaft to turn upwards, so as to use the supporting end to push the lifting floor upwards until the concave pit generated by the outward sliding of the side compartment is filled by the lifting floor, thus ensuring that the central floor of the compartment is flush with the bottom plate of the side compartment after the side compartment is expanded; at the same time, when the side compartment is retracted, the lifting floor is lowered to expose the concave pit for receiving the side compartment on the chassis. At this time, after the side compartment is retracted, the bottom plate of the side compartment is still flush with the central floor of the compartment.

[0009] Preferably, the lifting cam includes a support end and a connection end connected in a V shape. The connection between the support end and the connection end is fixedly connected to the transmission shaft, and the free end of the outside of the support end abuts against the bottom side of the lifting floor.

[0010] Preferably, the connection assembly includes a support seat fixed inside the chassis. A cam slide rod with a bias is vertically slidably arranged in the middle of the support seat. The top end of the cam slide rod with a bias is hinged with two outwardly extending settlement cam connecting pieces, and the top ends of the two settlement cam connecting pieces are correspondingly hinged to the connection ends of the two groups of lifting cams.

[0011] Preferably, the bottom end of the cam slide rod with a bias is a waist-shaped hole structure extending horizontally. A driving gear is rotatably arranged in the middle of the transmission seat. A transmission rod penetrating through the middle waist-shaped hole of the cam slide rod with a bias is fixed at the eccentric position on the outside of the driving gear, and the transmission rod has a clearance fit with the waist-shaped hole.

[0012] Preferably, the sliding part is a long strip-shaped rack structure extending horizontally, and the top sides of both ends of the sliding part are respectively meshed with the driving gears of the two groups of transmission seats.

[0013] Preferably, a driving slot in the shape of an upwardly extending rectangular frame is arranged on the top side of the middle section of the sliding part. The driving assembly includes a driving seat fixed in the middle of the chassis. A driving gear is rotatably arranged on the outside of the driving seat, and a driving rod penetrating through the driving slot is fixed at the eccentric position on the end face of the driving gear.

[0014] Preferably, the driving rod is in clearance fit with the driving groove, and a driving motor for supporting the rotation of the driving gear is fixed outside the driving seat.

[0015] The beneficial effects are as follows: 1. Ensure the flatness of the carriage floor: Through the unique lifting floor structure and the matching transmission components, it can always maintain the pure flat state of the floor inside the carriage in the expanded and retracted states of the side compartment, avoiding the problem of uneven floor caused by the expansion of the side compartment, greatly facilitating the activities of the people inside the vehicle, reducing the risk of tripping during walking, and improving the user experience.

[0016] 2. Compact and reasonable structure: The components cooperate closely with each other, occupying a small space. Without affecting the overall structure and layout of the RV, the functions of side compartment expansion and lifting floor are realized, effectively improving the utilization rate of the internal space of the RV.

[0017] 3. Convenient operation and high degree of automation: Using the driving motor as the power source, through the transmission structures such as gears, racks, and connecting rods, the automatic control of the side compartment expansion and lifting floor actions is realized. The operation is simple and convenient. Just start the driving motor to complete the corresponding actions, reducing the cumbersome steps of manual operation. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is the front view structural diagram of the present invention;

[0020] Figure 2 is the three-dimensional structural schematic diagram of the present invention;

[0021] Figure 3 is the bottom side structural schematic diagram of the chassis of the present invention;

[0022] Figure 4 is the partial three-dimensional structural schematic diagram of the present invention;

[0023] Figure 5 is the structural split schematic diagram of the driving component of the present invention;

[0024] Figure 6 is Figure 5 the enlarged view of the structure at A of

[0025] The description of the reference numerals in the drawings is as follows:

[0026] 1. Vehicle body; 2. Chassis; 3. Side compartments; 4. Guide rails; 5. Lifting floor; 6. Transmission shaft; 7. Lifting cam; 701. Connection end; 702. Support end; 8. Driving assembly; 801. Driving seat; 802. Driving motor; 803. Driving gear; 804. Driving rod; 9. Sliding part; 901. Driving groove; 10. Connection assembly; 10a. Bracket seat; 10b. Biased cam slide bar; 10c. Settlement cam connecting piece; 11. Transmission seat; 11a. Transmission gear; 11b. Transmission rod. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present utility model.

[0028] See Figures 1 - 6 As shown, the present utility model provides a lifting device for the side-expanded floor of a motorhome, including a vehicle body 1, a chassis 2, two groups of side compartments 3 and several groups of guide rails 4. The chassis 2 is arranged below the vehicle body 1. As the main load-bearing structure of the motorhome, the vehicle body 1 not only provides an installation basis for the in-vehicle facilities, but also needs to have good sealing performance and heat preservation performance to ensure the comfort of the in-vehicle environment. The two groups of side compartments 3 are symmetrically arranged on the top side of the chassis 2 in the middle section of the vehicle body 1. In addition to supporting the vehicle body 1 and installing various devices, the chassis 2 also needs to have good earthquake resistance and shock resistance performance to adapt to driving on different road conditions. The chassis 2 adopts a reinforced girder design and is made of high-quality steel. The two groups of side compartments 3 can slide outwards and expand under the support of the guide rails 4. Lifting floors 5 that can be lifted and slid are arranged on the top side of the chassis 2 below the two groups of side compartments 3 to provide precise guidance for the sliding of the side compartments 3. The guide rails 4 adopt high-precision linear guide rails 4;

[0029] Two groups of transmission shafts 6 are arranged in the middle of the chassis 2 below the two groups of lifting floors 5. Lifting cams 7 that support the up and down movement of the lifting floors 5 are fixed to the ends of the transmission shafts 6. A connection assembly 10 is arranged below the lifting cams 7. A transmission seat 11 is installed on the chassis 2 at the bottom side of the connection assembly 10. A sliding part 9 is longitudinally slidably arranged between the two groups of transmission seats 11. A driving assembly 8 that supports the longitudinal sliding of the sliding part 9 is arranged in the middle of the chassis 2.

[0030] As an optional implementation manner, the lifting cam 7 includes a support end 702 and a connection end 701 connected in a V shape. The connection between the support end 702 and the connection end 701 is fixedly connected to the transmission shaft 6. The free end outside the support end 702 abuts against the bottom side of the lifting floor 5;

[0031] The connecting component 10 includes a bracket seat 10a fixed inside the chassis 2. A bias cam slide bar 10b is vertically slidably arranged in the middle of the bracket seat 10a. At the top end of the bias cam slide bar 10b, two outwardly extending settlement cam connecting pieces 10c are hinged. The top ends of the two settlement cam connecting pieces 10c are correspondingly hinged to the connecting ends 701 of two groups of lifting cams 7;

[0032] The bottom end of the bias cam slide bar 10b is of a horizontally extending waist-shaped hole structure. A transmission gear 11a is rotatably arranged in the middle of the transmission seat 11. At the eccentric position outside the transmission gear 11a, a transmission rod 11b passing through the middle waist-shaped hole of the bias cam slide bar 10b is fixed, and the transmission rod 11b is in clearance fit with the waist-shaped hole;

[0033] The sliding part 9 is of a horizontally extending long strip-shaped rack structure, and the top sides of both ends of the sliding part 9 are respectively engaged with the transmission gears 11a of two groups of transmission seats 11;

[0034] A rectangular frame-shaped driving groove 901 extending upward is arranged on the top side of the middle section of the sliding part 9. The driving component 8 includes a driving seat 801 fixed in the middle of the chassis 2. A driving gear 803 is rotatably arranged outside the driving seat 801. At the eccentric position of the end face of the driving gear 803, a driving rod 804 passing through the driving groove 901 is fixed;

[0035] The driving rod 804 is in clearance fit with the driving groove 901, and a driving motor 802 for supporting the rotation of the driving gear 803 is fixed outside the driving seat 801.

[0036] With the above structure, when the side compartment 3 slides outwards along the guide rail 4 and it is necessary to move the lifting floor 5 upwards to a state flush with the bottom plate of the side compartment 3, the driving motor 802 drives the driving gear 803 to rotate. By using the driving rod 804 at the eccentric position of the end face of the driving gear 803 in cooperation with the driving groove 901, the driving rod 804 is used to support the whole sliding part 9 to horizontally slide along the length direction of the sliding part 9. At this time, by using the meshing effect between the rack on the top side of the sliding part 9 and the transmission gears 11a on both sides of the transmission seats 11, the transmission gears 11a at both ends of the sliding part 9 are driven to rotate synchronously. At this time, the transmission gear 11a drives the bias cam slide bar 10b to slide upwards through the transmission rod 11b at its end. Furthermore, the bias cam slide bar 10b slides upwards under the sliding guiding action of the bracket seat 10a, so as to drive the two settlement cam connecting pieces 10c to move upwards and push the lifting cam 7 to rotate through the bias cam slide bar 10b. The lifting cam 7 is supported by the transmission shaft 6 to turn upwards, so as to use the supporting end 702 to push the lifting floor upwards until the lifting floor 5 fills the pit generated by the outward sliding of the side compartment 3, so as to ensure that the central floor of the carriage is flush with the bottom plate of the side compartment 3 after the side compartment 3 is expanded; at the same time, when the side compartment 3 is retracted, the lifting floor 5 is moved downwards to expose the storage pit of the side compartment 3 on the chassis 2. At this time, after the side compartment 3 is retracted, the bottom plate of the side compartment 3 is still flush with the central carriage floor;

[0037] Ensure the flatness of the carriage floor: The unique lifting floor 5 structure and the transmission components cooperate to keep the floor inside the carriage always flat. This not only facilitates the walking and activities of the people inside the vehicle, but also ensures the stable placement of the furniture and equipment inside the vehicle, avoiding the tipping of items caused by the uneven floor. For example, when placing furniture such as dining tables and beds, the flat floor can provide better support, improving the comfort and safety of use. In addition, for the elderly or children with limited mobility, the flat floor can reduce the risk of them tripping when walking inside the vehicle, providing a safer environment for them.

[0038] Compact and reasonable structure: Each component cooperates closely with each other, occupying a small space. In the limited space of the RV, the functions of the side compartment 3 expansion and the lifting floor 5 are realized, effectively improving the space utilization rate. Each component of the transmission system is cleverly arranged inside the chassis 2, which not only does not affect the overall structure and layout of the RV, but also can give full play to its transmission role. At the same time, the design of the side compartment 3 also fully considers the combination with the vehicle body 1, realizing the effective expansion of the internal space without increasing too much external dimension. This compact and reasonable structural design enables the RV to provide a more spacious and comfortable internal space while maintaining flexibility.

[0039] Convenient operation and high degree of automation: Using the drive motor 802 as the power source, automatic control is realized through transmission structures such as gears, racks, and linkages. Just start the drive motor 802, and the actions of the side compartment 3 expansion and the lifting floor 5 can be completed, reducing the cumbersome steps of manual operation and improving the convenience and safety of operation.

[0040] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.

Claims

1. A saloon car side expansion floor lifting device, comprising a car body (1), a chassis (2), two sets of side compartments (3) and a plurality of sets of guide rails (4), wherein the chassis (2) is arranged below the car body (1), the two sets of side compartments (3) are symmetrically arranged on the top side of the chassis (2) in the middle section of the car body (1), and the two sets of side compartments (3) can slide and expand outward under the support of the guide rails (4), characterized in that: A lifting floor (5) capable of lifting and sliding is provided on the top side of the chassis (2) below the two sets of side compartments (3); Two groups of transmission shafts (6) are arranged in the middle of the chassis (2) below the two groups of lifting floors (5), and lifting cams (7) supporting the lifting floors (5) to move up and down are fixed to the ends of the transmission shafts (6). A connecting component (10) is arranged below the lifting cam (7), and a transmission seat (11) is installed on the chassis (2) at the bottom side of the connecting component (10). A sliding part (9) is arranged between the two groups of transmission seats (11) for longitudinal sliding, and a driving component (8) supporting the sliding part (9) to slide longitudinally is arranged in the middle of the chassis (2).

2. According to claim 1, a lifting device for a side expansion floor of a motorhome, characterized in that: The lifting cam (7) comprises a supporting end (702) and a connecting end (701) connected in a V-shape, the junction between the supporting end (702) and the connecting end (701) is fixedly connected to the transmission shaft (6), and the outer free end of the supporting end (702) abuts against the bottom side of the lifting floor (5).

3. According to claim 2, a lifting device for a side expansion floor of a motorhome is characterized in that: The connecting assembly (10) comprises a support seat (10a) fixed inside the chassis (2), a deflection cam slide bar (10b) being vertically slidably arranged in the middle of the support seat (10a), two outwardly extending sinking cam connecting pieces (10c) being hinged at the top end of the deflection cam slide bar (10b), and the top ends of the two sinking cam connecting pieces (10c) are correspondingly hinged to the connecting ends (701) of the two sets of lifting cams (7).

4. The RV side floor lifting device according to claim 3, characterized in that: The bottom end of the deflection cam slide bar (10b) is a waist-shaped hole structure extending laterally, and a transmission gear (11a) is rotatably arranged in the middle of the transmission seat (11), and a transmission rod (11b) penetrating the waist-shaped hole in the middle of the deflection cam slide bar (10b) is fixed to an eccentric position outside the transmission gear (11a), and the transmission rod (11b) is clearance-matched with the waist-shaped hole.

5. The RV side floor lifting device according to claim 4, characterized in that: The sliding portion (9) is a horizontally extending long strip-shaped rack structure, and the top sides of both end portions of the sliding portion (9) are respectively meshed with the two sets of transmission gears (11a) of the transmission seat (11).

6. The RV side floor lifting device according to claim 5, characterized in that: A rectangular frame-shaped driving groove (901) extending upward is provided at the top side of the middle section of the sliding portion (9); the driving assembly (8) comprises a driving seat (801) fixed to the middle part of the chassis (2); a driving gear (803) is rotatably provided on the outer side of the driving seat (801); a driving rod (804) penetrating the driving groove (901) is fixed at an eccentric position on the end face of the driving gear (803).

7. A lifting device for a side floor of a motorhome according to claim 6, characterized in that: The driving rod (804) is loosely matched with the driving slot (901), and a driving motor (802) for supporting the rotation of the driving gear (803) is fixed on the outside of the driving seat (801).

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