Expansion bin and expansion type motor home

Abstract

The utility model belongs to the technical field of touring cars, and discloses an expansion bin and an expansion type touring car, the expansion bin is installed in an opening of the side wall or the rear wall of the touring car, the expansion bin comprises an expansion bin body, a snakelike rack guide rail assembly and a fixed frame, and the fixed frame is fixedly installed on the peripheral edge of the opening of the side wall or the rear wall of the touring car. Upper, middle and lower snakelike rack guide rail assemblies are horizontally arranged on the side wall of the expansion bin main body in parallel; and a driving motor is arranged at the top of the side edge of the fixed frame, and the output end of the driving motor drives the driving gears corresponding to the snakelike rack guide rail assemblies through a prism vertical shaft. According to the extension bin and the extension type motor home, the snakelike rack guide rail assembly is additionally arranged at the top of the side wall of the extension bin, and the overturning prevention capacity between the fixed frame and the extension bin is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of house car, especially extendable house car with extension warehouse. BACKGROUND

[0002] In order to increase the space in the house car, the existing house car usually installs the extension warehouse that can be expanded on both sides and or tail of the house car, so that the space in the house car is greatly increased without changing the total width and total length of the house car, and the living experience of the user of the house car is improved. The existing house car extension warehouse is generally installed on the house car through the gear and rack mechanism, and the gear is driven to rotate by the motor, so that the extension warehouse is driven to advance and push out the opening of the side wall or rear wall of the house car. The utility model discloses a house car extension structure assembly with the announcement number CN208665040U, adopts the slide rail and the serpentine rack fixed on the side wall of the extension warehouse, drives the serpentine rack by the gear of the driving unit, and the structure is the mainstream form of the existing house car extension warehouse at present. However, the patent technical scheme and the existing house car are both adopted two slide rails to bear the overturning force of the extension warehouse on one side, and the defect of poor anti-overturning capacity exists. If the load in the extension warehouse is relatively large, or the impact of the children jumping is relatively large, the slide rail and the sliding block or the pulley are prone to damage, the smooth realization of the advancing and pushing out action is affected, and the service life is reduced.

[0003] Therefore, it is necessary to develop an extension warehouse and an extendable house car aiming at the above defects. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an extension warehouse and an extendable house car, a group of serpentine rack guide rail assemblies are additionally arranged at the top of the side wall of the extension warehouse, and the anti-overturning capacity between the fixed frame and the extension warehouse is increased.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0006] The utility model discloses an extension warehouse and an extendable house car, which are installed in the opening of the side wall or rear wall of the house car and comprise an extension warehouse main body, a serpentine rack guide rail assembly and a fixed frame.

[0007] Further, the middle hole of the driving gear is a prism hole and is matched with the prism vertical shaft.

[0008] Further, an auxiliary guiding assembly is arranged between the expansion compartment body and the RV floor, and a guiding direction of the auxiliary guiding assembly is parallel to the serpentine rack rail assembly.

[0009] Further, the auxiliary guiding assembly is in two groups, and the two groups of auxiliary guiding assemblies are symmetrically arranged on both sides of the front edge bottom of the expansion compartment body.

[0010] Further, the auxiliary guiding assembly comprises a guiding plug plate and a guiding sleeve, the outer end of the guiding plug plate is fixedly connected to the rear of the front edge bottom, the guiding sleeve is embeddedly arranged in the RV floor, and the inner end of the guiding plug plate is guidingly inserted into the guiding sleeve.

[0011] Further, an adapter square tube is vertically fixedly connected to the rear wall of the front edge bottom, the inner end of the guiding plug plate is fixedly connected to the adapter square tube, the top end of the adapter square tube is fixedly connected to the steel structure framework of the outer wall of the expansion compartment body, and the fixed frame and the RV floor are provided with a gap at the position of the adapter square tube.

[0012] Further, a front guide wheel and a rear guide wheel are arranged, two front guide wheels are rotatably installed on the upper and lower sides of the opening end of the guiding sleeve, the front guide wheels rollingly contact the top surface and the bottom surface of the guiding plug plate, and two rear guide wheels are rotatably installed on the upper and lower sides of the inner end of the guiding plug plate, and the rear guide wheels rollingly contact the inner top surface and the inner bottom surface of the guiding sleeve.

[0013] Further, the outer wall of the guiding sleeve is fixedly connected to the steel structure framework of the RV floor.

[0014] The utility model discloses still disclose an expansion type RV, adopts the expansion compartment of any one in above to install in the opening of RV side wall or rear wall.

[0015] Compared with the prior art, the utility model has the beneficial technical effects that:

[0016] Compared with the prior art, the utility model has the beneficial technical effects that:

[0017] In addition, by additionally arranging the auxiliary guide assembly between the expansion warehouse body and the trailer floor, the auxiliary guide rail and the sliding block pulley connection part support the expansion warehouse body in a cantilevered manner, and the risk of the expansion warehouse body overturning outward is further reduced. The auxiliary guide assembly composed of the guide insertion plate and the guide sleeve has simple and compact guide structure, is easy to realize, and the guide sleeve is embedded in the trailer floor, so that the guide length of the guide insertion plate is increased, and the cantilever support strength is improved. The outer wall of the guide sleeve and the steel structure framework of the trailer floor are welded together, the guide sleeve itself is part of the steel structure framework, and the mounting strength of the guide sleeve is improved. The adapter square tube is arranged between the expansion warehouse body and the guide insertion plate, the connection strength of the cantilever end of the guide insertion plate is improved, and cracking at the position is avoided. The top end of the adapter square tube is directly connected to the steel structure framework of the outer wall of the expansion warehouse body, so that the cantilever support force can be directly transmitted to the entire outer wall, and the anti-overturning performance is significantly improved. The front guide wheel and the rear guide wheel are additionally arranged between the guide insertion plate and the guide sleeve, the sliding friction resistance of the guide is replaced by the rolling friction resistance, the resistance in the movement process of the expansion warehouse body is reduced, and the output power requirement of the driving motor is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described in connection with the drawings.

[0019] Figure 1 It is the expansion warehouse main view structure schematic diagram of the utility model;

[0020] Figure 2 It is Figure 1 It is the section structure schematic diagram of A-A part in the utility model;

[0021] Figure 3 It is Figure 1 It is the local amplification structure schematic diagram of I part.

[0022] The reference signs are explained: 1, expansion warehouse body; 101, front baffle; 102, window; 2, snake-shaped rack guide rail assembly; 3, fixed frame; 4, adapter square tube; 5, guide insertion plate; 6, guide sleeve; 7, front guide wheel; 8, rear guide wheel; 9, bearing wheel; 10, trailer floor. DETAILED DESCRIPTION

[0023] The core of the utility model is to provide an expansion warehouse and an expansion trailer, a group of snake-shaped rack guide rail assemblies are additionally arranged at the top of the side wall of the expansion warehouse, and the anti-overturning capacity between the fixed frame and the expansion warehouse is increased.

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] Referring to the drawings, Figure 1 It is a front view structural schematic diagram of the expansion warehouse of the present application; Figure 2 It is Figure 1 It is a sectional view structural schematic diagram of the A-A part in the middle; Figure 3 It is Figure 1 It is a local enlarged structural schematic diagram of the I part.

[0027] In a specific embodiment, as Figures 1 to 3 shown, the expansion warehouse of the present application is installed in the opening of the side wall or rear wall of the house car, including an expansion warehouse body 1, a serpentine rack guide rail assembly 2 and a fixed frame 3. In accordance with the technical scheme of the comparative document CN208665040U, the serpentine rack guide rail assembly 2 and the fixed frame 3 are cooperatively applied to make the action of pushing in and pushing out the expansion warehouse body 1. The fixed frame 3 is fixedly installed on the opening periphery of the side wall or rear wall of the house car by screws. The expansion warehouse body 1 has three groups of serpentine rack guide rail assemblies 2 horizontally and parallelly arranged on the side walls, i.e., six groups of serpentine rack guide rail assemblies 2 are arranged on the two side walls. The serpentine rack guide rail assembly 2 in the middle is closer to the upper part, so that the stress is more reasonable. That is, the six groups of slide rails and slide blocks cooperated with the pulleys resist the overturning moment of the expansion warehouse body 1, which significantly improves the anti-overturning capacity compared with the existing four groups. The fixed frame 3 is provided with a driving motor at the top of the side edge, and the driving motor output end drives the corresponding driving gears of each serpentine rack guide rail assembly 2 below through a prismatic vertical shaft. The driving motor, prismatic vertical shaft and driving gear are all arranged inside the vertical side of the fixed frame 3, which is similar to the prior art and will not be described here.

[0028] Specifically, the middle hole of the driving gear is a prism hole and is matched with the prism vertical shaft. The cross section of the prism vertical shaft can be square, regular hexagonal or regular octagonal, wherein the middle hole of the driving gear must be a through hole.

[0029] Compared with the single-face two-group slide rail and the slide block pulley commonly used in the prior art to prevent the expansion bin body 1 from overturning outward, the single-face three-group slide matching points are adopted in the application to improve the stability and the anti-overturning capacity. In the utility model, one prism vertical shaft is adopted to synchronously drive the three driving gears, so that synchronous driving is ensured.

[0030] In a specific embodiment of the utility model, as shown in Figures 1 to 3 The expansion bin further comprises an auxiliary guide assembly, the auxiliary guide assembly is arranged between the expansion bin body 1 and the motor home bottom plate 10, and the guide direction of the auxiliary guide assembly is parallel to the serpentine rack guide assembly 2.

[0031] Specifically, as shown in Figures 1 to 3 The number of the auxiliary guide assembly is two groups, and the two groups of auxiliary guide assemblies are symmetrically arranged at the two sides of the bottom edge of the front retaining edge 101 of the expansion bin body 1.

[0032] By additionally arranging the auxiliary guide assembly between the expansion bin body 1 and the motor home bottom plate 10, the auxiliary guide rail and the slide block pulley connection part perform cantilever type guide support on the expansion bin body 1, and the risk of the expansion bin body 1 overturning outward is further reduced.

[0033] In a specific embodiment of the utility model, as shown in Figures 1 to 3 The auxiliary guide assembly comprises a guide insertion plate 5 and a guide sleeve 6. The guide insertion plate 5 is a vertically arranged long steel plate, and the guide sleeve 6 is a steel sleeve structure. The outer end of the guide insertion plate 5 is fixedly connected to the rear of the bottom edge of the front retaining edge 101, the guide sleeve 6 is embeddedly arranged in the motor home bottom plate 10, and the inner end of the guide insertion plate 5 is guidedly inserted into the guide sleeve 6.

[0034] Obviously, the auxiliary guide assembly can also be replaced by a round pipe and a round sleeve, but the bending moment performance of the round pipe is slightly lower than that of the solid steel plate, so the long steel plate form is selected in the utility model; similar simple replacement methods all fall within the protection scope of the utility model.

[0035] Specifically, as shown in Figure 1 The length of the guide insertion plate 5 is greater than the expansion stroke of the expansion bin body 1, that is, when the expansion bin body 1 is completely pushed out, the guide insertion plate 5 is still guidedly inserted into the guide sleeve 6.

[0036] Specifically, the outer wall of the guide sleeve 6 is fixedly connected to the steel frame of the RV floor 10, that is, the outer wall of the guide sleeve 6 and the steel frame of the RV floor 10 are welded together, and the installation is stable and reliable.

[0037] The auxiliary guide assembly composed of the guide plug 5 and the guide sleeve 6 has a simple and compact guide structure and is easy to realize, and the guide sleeve 6 is embedded in the RV floor 10, so that the guide length of the guide plug 5 is increased and the cantilever support strength is improved. The outer wall of the guide sleeve 6 and the steel frame of the RV floor 10 are welded together, and the guide sleeve 6 itself serves as a part of the steel frame to improve the installation strength of the guide sleeve 6.

[0038] In a specific embodiment of the present application, as shown in Figure 1 and Figure 2 The auxiliary guide assembly further comprises an adapter square tube 4, which is vertically fixedly connected to the bottom wall of the front flange 101, and the two are connected by screws. The inner end of the guide plug 5 is directly welded to the adapter square tube 4 and is provided with an angle support rib plate. The top end of the adapter square tube 4 is inserted into the outer wall of the expansion bin body 1 and is welded to the internal steel frame. The fixed frame 3 and the RV floor 10 are provided with a gap at the position of the adapter square tube 4. The front edge and the outer edge of the fixed frame 3 are both provided with a sealing rubber strip, and the sealing rubber strip also needs to be cut at this gap position.

[0039] The adapter square tube 4 is arranged between the expansion bin body 1 and the guide plug 5, which improves the connection strength of the cantilever end of the guide plug 5 and avoids cracking at this position. The top end of the adapter square tube 4 is directly connected to the steel frame of the outer wall of the expansion bin body 1, which can directly transmit the cantilever support force to the entire outer wall, and significantly improves the anti-overturning performance.

[0040] In a specific embodiment of the present application, as shown in Figure 1 and Figure 3 The auxiliary guide assembly further comprises a front guide wheel 7 and a rear guide wheel 8. The two front guide wheels 7 are rotatably installed on the upper and lower sides of the opening end of the guide sleeve 6, that is, the shaft end of the front guide wheel 7 is installed on the side wall of the guide sleeve 6; the two front guide wheels 7 respectively rollingly contact the top surface and the bottom surface of the guide plug 5. The two rear guide wheels 8 are rotatably installed on the upper and lower sides of the inner end of the guide plug 5, and the two rear guide wheels 8 respectively rollingly contact the inner top surface and the inner bottom surface of the guide sleeve 6.

[0041] By additionally arranging the front guide wheel 7 and the rear guide wheel 8 between the guide plug 5 and the guide sleeve 6, the sliding friction resistance of the guide is replaced by the rolling friction resistance, which reduces the resistance in the movement process of the expansion bin body 1 and reduces the requirement for the output power of the driving motor.

[0042] The utility model discloses an extension warehouse working process: when needing to expand the space of the house car, the drive motor on the fixed frame 3 starts, and three drive gears are driven to rotate through the prism vertical shaft, and the snake rack guide rail assembly 2 is synchronously driven to move outward, and then the extension warehouse main body 1 is pushed out outward. During the pushing-out process, the cooperation of the single-face three-position slide rail and the slider pulley prevents the extension warehouse main body 1 from overturning outward. The two load wheels 9 between the bottom surface of the extension warehouse main body 1 and the top surface of the house car bottom plate 10 are relatively close, and the load wheel 9 belongs to the prior art, and most of the present house cars are equipped with load wheels to bear the weight of the extension warehouse main body 1, and the extension is not described here. At the same time, the guide plug 5 is gradually pulled out of the guide sleeve 6, the front guide wheel 7 and the rear guide wheel 8 support the guide plug 5 at the front and rear two points, the cantilever end of the guide plug 5 hooks the outer wall of the extension warehouse main body 1, and the anti-overturning capability is improved. After the extension warehouse main body 1 is completely pushed out, the inner end of the guide plug 5 is still inserted into the guide sleeve 6, and the supporting force is strong. The pushing-back process is opposite to the above process, and details are not repeated here.

[0043] In summary, the extension warehouse of the utility model, relative to the single-face two-group slide rail and slider pulley cooperation to prevent the extension warehouse main body 1 from overturning outward in the prior art, the single-face three-group sliding cooperation point is used in the application to improve the stability and anti-overturning capability. In the utility model, one prism vertical shaft is used to synchronously drive three drive gears, and synchronous driving is ensured. In addition, by additionally arranging the auxiliary guide assembly between the extension warehouse main body 1 and the house car bottom plate 10, the auxiliary guide rail and the slider pulley connection place carry out cantilever type guide support to the extension warehouse main body 1, and the risk of the extension warehouse main body 1 overturning outward is further reduced. The auxiliary guide assembly composed of the guide plug 5 and the guide sleeve 6, the guide structure is simple and compact and easy to realize, and the guide sleeve 6 is embeddedly arranged in the house car bottom plate 10, the guide length of the guide plug 5 can be increased, and the cantilever support strength is improved. The outer wall of the guide sleeve 6 and the steel structure framework of the house car bottom plate 10 are welded together, the guide sleeve 6 itself is part of the steel structure framework, and the installation strength of the guide sleeve 6 is improved. The adapter square tube 4 is arranged between the extension warehouse main body 1 and the guide plug 5, the connection strength of the cantilever end of the guide plug 5 is improved, and cracking at this place is avoided. The top end of the adapter square tube 4 is directly connected with the steel structure framework of the outer wall of the extension warehouse main body 1, the cantilever support force can be directly transmitted to the whole outer wall, and the anti-overturning performance is significantly improved. By additionally arranging the front guide wheel 7 and the rear guide wheel 8 between the guide plug 5 and the guide sleeve 6, the sliding friction resistance of the guide is replaced by the rolling friction resistance, the resistance in the moving process of the extension warehouse main body 1 is reduced, and the output power requirement of the drive motor is reduced.

[0044] The utility model discloses still disclose a kind of extension type house car, using the extension warehouse in any embodiment above is installed in the opening of house car side wall or rear wall.

[0045] The various embodiments are described in the specification by way of progression, each building on the last to facilitate ease of understanding. The same or similar reference numerals are used in the drawings and description to refer to the same or like parts, components and operations throughout.

[0046] The above described embodiments are only preferred modes of the present application, and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope of the present application as defined by the claims.

Claims

1. An expansion room to be installed in an opening of a side wall or a rear wall of a recreational vehicle, characterized in that, Including extension warehouse body (1), serpentine rack guide rail assembly (2) and fixed frame (3), the fixed frame (3) is fixedly installed on the opening circumferential edge of the house car side wall or rear wall, the extension warehouse body (1) side wall is horizontally parallelly provided with upper, middle and lower three groups of serpentine rack guide rail assembly (2);The top of the side edge of the fixed frame (3) is provided with a driving motor, and the output end of the driving motor is driven by a prismatic vertical shaft respectively driving each serpentine rack guide rail assembly (2) corresponding driving gear.

2. The extension pod of claim 1, wherein, The middle hole of the driving gear is a prismatic hole and is matched with the prismatic vertical shaft.

3. The extension pod of claim 1, wherein, It also includes an auxiliary guide assembly, which is arranged between the extension warehouse body (1) and the house car floor (10), and the guide direction of the auxiliary guide assembly is parallel to the serpentine rack guide rail assembly (2).

4. The extension pod of claim 3, wherein, The number of the auxiliary guide assembly is two groups, and the two groups of auxiliary guide assemblies are symmetrically arranged on the two sides of the bottom edge of the front edge (101) of the extension warehouse body (1).

5. The extension pod of claim 4, wherein, The auxiliary guide assembly includes a guide plugboard (5) and a guide sleeve (6), the outer end of the guide plugboard (5) is fixedly connected to the rear of the bottom edge of the front edge (101), the guide sleeve (6) is embeddedly arranged in the house car floor (10), and the inner end of the guide plugboard (5) is guided and inserted into the guide sleeve (6).

6. The extension pod of claim 5, wherein, It also includes an adapter square tube (4), which is vertically fixedly connected to the bottom edge of the front edge (101) rear wall, the inner end of the guide plugboard (5) is fixedly connected to the adapter square tube (4), and the top end of the adapter square tube (4) is fixedly connected to the steel structure framework of the outer wall of the extension warehouse body (1);The fixed frame (3) and the house car floor (10) are provided with a gap at the position of the adapter square tube (4).

7. The extension pod of claim 5, wherein, It also includes a front guide wheel (7) and a rear guide wheel (8), two front guide wheels (7) are rotatably installed on the upper and lower sides of the opening end of the guide sleeve (6), the front guide wheel (7) rolls and guides the top surface and the bottom surface of the guide plugboard (5);Two rear guide wheels (8) are rotatably installed on the upper and lower sides of the inner end of the guide plugboard (5), and the rear guide wheel (8) rolls and contacts the inner top surface and the inner bottom surface of the guide sleeve (6).

8. The extension bin of claim 5 or 7, wherein, The outer wall of the guide sleeve (6) is fixedly connected to the steel structure framework of the house car floor (10).

9. An expandable recreational vehicle characterized by, The extension warehouse in any one of claims 1-8 is installed in the opening of the side wall or rear wall of the house car.

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