Hidden folding step ladder for RV and production equipment

Abstract

The present invention discloses a hidden folding step ladder for a motorhome and a production device, comprising a support frame and a pedal assembly telescopically arranged on the support frame. The pedal assembly comprises a pedal frame and a plurality of flip plates movably and equidistantly arranged on the pedal frame, and a water-absorbing pad is arranged on the flip plate; sliding blocks are symmetrically arranged at both ends of the flip plate, and a return spring is arranged between the sliding blocks on adjacent flip plates, and a guide groove is arranged on the pedal frame; flip arms are symmetrically arranged at both ends of the flip plate, and a driving plate matched with the flip arms is arranged on the pedal frame. The present invention provides a foldable motorhome step ladder, which is provided by arranging a plurality of flip plates on the pedal, and flipping and squeezing the flip plates when folding, so that the water-absorbing pad squeezes out the internal water after the step ladder is folded, which is convenient for the next use.

Description

Technical Field

[0001] The invention relates to the technical field of recreational vehicles, in particular to a hidden folding step ladder of a recreational vehicle and production equipment. Background Art

[0002] An RV is a movable vehicle equipped with essential home facilities. Usually, the main body of an RV is set high above the ground. Therefore, safe and convenient entry and exit from the RV body becomes one of the key factors in improving the user experience of the RV. In this context, the RV folding step ladder is an important bridge connecting the ground and the compartment, and its design and technological innovation are particularly important.

[0003] Chinese patent CN215042474U discloses a foldable step ladder, which provides a foot pedal folding mechanism that connects a support plate with a foot pedal through a connecting rod, and drives the foot pedal to extend and retract, so that after being installed on a vehicle, the step ladder is in a folded state when the vehicle is driving, and is extended to facilitate stepping when the vehicle is parked and people get on and off. However, this type of foldable step ladder has the following disadvantages and shortcomings:

[0004] The foot pedal is made of a single textured flat plate, which makes it difficult to effectively clean the dirt and water stains on the soles of people entering the vehicle on rainy days, thus affecting the cleanliness of the interior of the RV. Even if an absorbent pad is laid on the flat plate, the moisture absorbed by the pad is difficult to squeeze out when the foot pedal is folded and stored, affecting the next use; if a series of electrical components are used to extrude and dry the absorbent pad, the production cost of the folding step ladder will be greatly increased, which is not conducive to cost reduction and efficiency improvement. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a hidden folding step ladder for a recreational vehicle and production equipment.

[0006] In order to solve the above technical problems, the present invention solves them through the following technical solutions: a hidden folding step ladder for a motorhome, comprising a support frame and a pedal assembly telescopically arranged on the support frame.

[0007] In the above scheme, preferably, the pedal assembly includes a pedal frame and a plurality of flip plates movably and equidistantly arranged on the pedal frame, and a water-absorbing pad is arranged on the flip plate;

[0008] Sliding blocks are symmetrically arranged at both ends of the flip plate, and a return spring is arranged between the sliding blocks on adjacent flip plates. A guide groove for guiding the sliding blocks is arranged on the pedal frame, and the flip plate moves along the guide groove when the pedal assembly is folded, so that the adjacent flip plates are squeezed and fitted;

[0009] Flip arms are symmetrically arranged at both ends of the flip plate, and a driving plate matched with the flip arms is arranged on the pedal frame. When the pedal assembly is folded, the driving plate drives the flip arms to swing so that the flip plate rotates to be vertical or nearly vertical to the plane of the pedal frame.

[0010] In the above solution, preferably, the water-absorbing pad is a flexible pad, and the water-absorbing pad is deformed and compressed after being squeezed by force, thereby squeezing out the water absorbed inside.

[0011] In the above scheme, preferably, one end of the flip arm is adjacent to the flip plate, and the other end is provided with a driving rod matched with the driving plate, and the driving plate is provided with a driving groove for the driving rod to slide.

[0012] In the above scheme, preferably, both ends of the flip plate are fixedly provided with rotating shafts, and the rotating shafts are rotated to pass through the sliding blocks and then fixedly connected to the flip arms.

[0013] In the above scheme, preferably, a plurality of guide rods are provided on the driving plate, a guide bracket matching with the guide rods is provided on the pedal frame, a first pull plate is fixedly provided after the guide rods slide through the guide brackets, and a first spring is provided between the first pull plate and the guide bracket.

[0014] In the above scheme, preferably, the support frame is provided with an active arm and an auxiliary arm adjacent to the pedal frame, the active arm is connected to a driving gear, the active arm is provided with a first pull rope rod, and the first pull rope rod is adjacent to the first pull plate through a first pull rope.

[0015] In the above scheme, preferably, a second pull rope rod is provided on the active arm, and the second pull rope rod is connected to the limiting plate through a second pull rope, and the second pull rope is passed through the sliding block in turn and is limited by the sliding block at one end through the limiting plate.

[0016] In the above scheme, preferably, the support frame is provided with a first pull rope plate and a second pull rope plate for guiding the first pull rope and the second pull rope, and the pedal frame is provided with a third pull rope plate for guiding the second pull rope at one end away from the limiting plate.

[0017] In the above scheme, preferably, a production equipment for a hidden folding step ladder for a motorhome includes a detection frame, the detection frame is provided with a driving motor matched with a driving gear, the driving motor is provided with an active gear meshing with the driving gear, the support frame is provided with a plurality of mounting holes, and the detection frame is provided with a positioning rod adapted to the mounting holes.

[0018] In the above scheme, preferably, distance detectors are symmetrically provided on both sides of the detection frame, and the distance detectors are used to detect the thickness of each flip plate close to extrusion after folding. The distance detectors and the driving motor are controlled by a PLC controller.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a foldable RV step ladder, by arranging multiple flip plates on the pedals, and flipping and squeezing the flip plates when folding, so that the absorbent pad squeezes out the internal moisture after the step ladder is folded, which is convenient for next use. At the same time, a step ladder production inspection equipment is provided. After the absorbent pad is covered during the production of the step ladder, the folding action of the step ladder is used to detect whether each flip plate and the absorbent pad are installed correctly and flatly, which greatly improves the inspection efficiency and production quality of the step ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the foldable step ladder of the present invention in the extended state.

[0021] Figure 2 It is a schematic diagram of the partially enlarged structure of location A of the present invention.

[0022] Figure 3 The figure is a schematic structural diagram of the folding step ladder of the present invention in a folded state.

[0023] Figure 4 It is a schematic diagram of the matching structure of the folding step ladder production equipment and the step ladder of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the folding step ladder production equipment of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the driving plate of the present invention.

[0026] Figure 7 It is a schematic diagram of the matching structure of the flip plate and the sliding block of the present invention.

[0027] Figure 8 It is a schematic diagram of the position structure of the sliding block of the present invention when the step ladder is in a folded state. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figure 1-Figure 8 A hidden folding step ladder for a motorhome comprises a support frame 1 and a pedal assembly 2 telescopically arranged on the support frame 1, wherein the support frame 1 is used for fixedly connecting with a main frame of the motorhome, such as Figure 1 As shown, a plurality of mounting holes 112 are provided on the top of the support frame 1, and the mounting holes 112 are fixed to the RV body by bolts.

[0029] The support frame 1 is connected to the pedal assembly 2 through an active arm 101 and an auxiliary arm 102. Specifically, the pedal assembly 2 includes a pedal frame 201, one end of the active arm 101 is connected to the support frame 1, and the other end is rotatably connected to a fulcrum of the pedal frame 201 close to one end of the support frame 1, one end of the auxiliary arm 102 is connected to the support frame 1, and the other end is rotatably connected to the middle fulcrum of the pedal frame 201. This is an existing connection and telescopic structure of the folding step ladder, which will not be described in detail here. Preferably, the active arm 101 is provided with a driving gear 103 for driving it to swing relative to the support frame 1. When the driving gear 103 is driven by a motor, it can drive the active arm 101 to swing back and forth relative to the support frame 1, so that the pedal frame 201 can be folded and telescoped relative to the support frame 1. Figure 1 Shown in extended state, Figure 3 Shown folded.

[0030] A number of flip plates 202 are equidistantly arranged on the pedal frame 201, and water-permeable holes are arranged on the flip plates 202. The surface of the flip plates 202 is covered with absorbent pads 203, and the absorbent pads 203 are flexible pads. The absorbent pads 203 are deformed and compressed after being squeezed, so as to squeeze out the water absorbed inside. Rotating shafts 210 are fixed at both ends of the flip plates 202, and sliding blocks 204 matching the number of flip plates 202 are symmetrically arranged on both sides of the pedal frame 201. The rotating shafts 210 are rotated to penetrate the sliding blocks 204, so that when the sliding blocks 204 slide on the pedal frame 201, the flip plates 202 can be driven to move.

[0031] The sliding block 204 is preferably a rectangular block, and the pedal frame 201 is provided with a guide groove 205 adapted to the sliding block 204, that is, the sliding block 204 is guided and slid in the guide groove 205. Figure 2 As shown; a return spring is arranged between the adjacent sliding blocks 204, that is, when the sliding block 204 is displaced by force, it can be squeezed with the adjacent sliding block 204, and when the force disappears, the sliding block 204 is reset by the return spring, that is: the adjacent flip plate 202 is moved closer or reset away by the force of the sliding block 204 and the reset of the return spring.

[0032] In order to achieve the approach of adjacent sliding blocks 204, the active arm 101 is provided with a second pull rope rod 106, and the second pull rope rod 106 is connected to the limit plate 108 through a second pull rope 107. One end of the second pull rope 107 is fixedly connected to the second pull rope rod 106, and the other end slides through the sliding blocks 204 arranged equidistantly in sequence and then engages with the limit plate 108. Figure 1-3 The left end sliding block is adjacent to the outer side through the limit plate 108. When the active arm 101 is in Figure 1After the sliding block 204 is swung clockwise in the direction shown, the second pull rope 107 pulls the limit plate 108 to make the sliding block 204 slide to the right, and finally the sliding block 204 is in the Figure 3 That is, the flip plate 202 is displaced along the guide groove 205 when the pedal assembly 2 is folded, so that the adjacent flip plates 202 are squeezed and fitted.

[0033] In order to achieve effective pulling of the above-mentioned second pull rope 107, the support frame 1 is provided with a second pull rope plate 110 that cooperates with the second pull rope 107, and the end of the pedal frame 201 away from the limiting plate 108 is provided with a third pull rope plate 111 for guiding the second pull rope 107, that is, one end of the second pull rope 107 is connected to the second pull rope rod 106 on the active arm 101, and the other end is successively passed through the second pull rope plate 110, the third pull rope plate 111 and a plurality of sliding blocks 204, and then fixedly connected to the limiting plate 108 on the outer side of the leftmost sliding block 204.

[0034] In order to increase the extrusion contact area of ​​adjacent flip plates 202 when the pedal assembly 2 is folded, it is necessary to adjust the angle of the flip plates 202 while displacing, that is, to be in a perpendicular or nearly perpendicular state to the plane of the pedal frame 201 when folded, so that the extrusion area of ​​adjacent flip plates 202 is maximized when extruded; to solve the above problem, flip arms 206 are symmetrically arranged at both ends of the flip plates 202. Specifically, the sliding blocks 204 are passed through the rotating shaft 210 at both ends of the flip plates 202 and are fixedly connected to the flip arms 206, so that when the flip arms 206 rotate, the flip plates 202 can be driven to rotate synchronously.

[0035] The pedal frame 201 is provided with a driving plate 207 that cooperates with the flip arm 206, and the driving plate 207 is vertically slidably set on the pedal frame 201. Specifically, a plurality of guide rods 301 are fixedly provided at the lower end of the driving plate 207, and a guide bracket 302 that cooperates with the guide rod 301 is provided on the pedal frame 201. After the guide rod 301 slides through the guide bracket 302, a first pull plate 303 is fixedly provided thereon, and a first spring 304 is provided between the first pull plate 303 and the guide bracket 302. A driving groove 209 is horizontally opened on the driving plate 207, one end of the flip arm 206 is fixedly connected to the rotating shaft 210 on the flip plate 202, and the other end is provided with a driving rod 208 that cooperates with the driving plate 207, and the driving rod 208 is placed in the driving groove 209 and can slide laterally relative to the driving groove 209.

[0036] In order to realize that the driving plate 207 makes the flip plate 202 rotate when the pedal assembly 2 is folded, the active arm 101 is provided with a first pull rope rod 104, and the first pull rope rod 104 is connected to the first pull plate 303 through a first pull rope 105, and the support frame 1 is provided with a first pull rope plate 109 for guiding the first pull rope 105, that is, one end of the first pull rope 105 is fixedly connected to the first pull rope rod 104, and the other end is passed through the first pull rope plate 109 and the guide bracket 302 in sequence and then fixedly connected to the first pull plate 303; when the active arm 101 is Figure 1 After the pedal assembly 202 is folded, the first pull rope 105 is pulled to lift the first pull plate 303 upward and compress the first spring 304, so that the driving rod 208 is lifted by the driving slot 209 to drive the flip arm 206 to flip the flip plate 202, and finally the pedal assembly 202 is folded. Figure 3 In the state shown, the flip plate 202 and the pedal frame 201 plane are in a vertical or nearly vertical state, and adjacent flip plates 202 squeeze each other to squeeze out the water in the absorbent pad 203, so that it has better water absorption performance when used next time.

[0037] In order to ensure that the flipping and squeezing function of the flip plate 202 of the folding step ladder of the present invention can be normally realized when it leaves the factory, the present embodiment further provides a production device for a hidden folding step ladder for a motorhome, including a detection frame 4, the detection frame 4 is provided with a driving motor 401 that matches the driving gear 103, the driving motor 401 is provided with an active gear 402 that meshes with the driving gear 103, and the detection frame 4 is provided with a positioning rod 403 that matches the number and position of the mounting holes 112. During the inspection, the support frame 1 is placed on the detection frame 4 through the mounting hole 112. At this time, the positioning rod 403 is inserted into the mounting hole 112 to position the support frame 1. After placement, the folding step ladder is in a position as shown in the figure. Figure 1 The absorbent pad 203 is then initially glued to the flip plate 202, and the drive motor 401 is started to swing the active arm 101 clockwise, so that the pedal frame 201 is folded into Figure 3 In the state shown, the absorbent pad 203 is firmly adhered under the pressure of the flip plate 202.

[0038] The detection frame 4 is symmetrically provided with distance detectors 404 on both sides, and the distance detectors 404 are used to detect the thickness of each flip plate 202 close to the extrusion after folding, that is, when the pedal frame 201 is folded, the pedal frame 201 is in Figure 4In the state shown, the flip plate 202 is squeezed after displacement, and the distance detectors 404 on both sides detect the thickness of the flip plate 202 on both sides, thereby measuring whether the displacement distances at both ends of the flip plate 202 are the same. When the detected distances are the same, it means that the folding step ladder has qualified quality. When the distances on both sides are inconsistent, it means that the flip plate 202 has quality problems due to jamming or size errors when it is displaced. At this time, the distance detector 404 reminds the operator through the PLC controller.

[0039] In this embodiment, the distance detector 404 and the drive motor 401 in the production equipment of the hidden folding step ladder of the RV are simply controlled by a PLC controller, and the detection results are fed back.

[0040] Method for using a hidden folding step ladder for a motorhome as described above: Initially, the folding step ladder is in Figure 1 In the state shown, when the step ladder needs to be folded, the driving gear 103 drives the active arm 101 to swing clockwise through the motor, and at this time, the first pull rope rod 104 and the second pull rope rod 106 on the active arm 101 pull the first pull rope 105 and the second pull rope 107 synchronously;

[0041] The first pull rope 105 drives the first pull plate 303 to lift upward, and at this time, the driving rod 208 drives the flip arm 206 to flip clockwise under the lifting action of the driving slot 209 of the driving plate 207, so that the flip plate 202 Figure 1 In this state, the pedal frame is turned clockwise and finally becomes vertical or nearly vertical with respect to the pedal frame 201 square meters;

[0042] When the first pull rope 105 is pulled, the second pull rope 107 pulls the limit plate 108, so that the leftmost sliding block 204 slides to the right, and gradually drives the remaining sliding blocks 204 to be squeezed to the right, so that the flip plate 202 flips and slides to the right at the same time, and finally realizes Figure 3 The state shown is that the flip plates 202 are squeezed against each other, so that the absorbent pad 203 is squeezed. As a result, when the folding step ladder is extended, the absorbent pad 203 is facing upward. At this time, when the operator steps on the step ladder, the stains and moisture on the soles of the shoes can be absorbed. When the folding step ladder is folded, the absorbent pads 203 are squeezed against each other to squeeze out the internal moisture. When the folding step ladder is extended for use next time, it has a better water absorption function again, thereby improving the use effect of the folding step ladder.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hidden folding step ladder for a recreational vehicle, comprising a support frame (1) and a pedal assembly (2) telescopically arranged on the support frame (1), characterized in that: The pedal assembly (2) comprises a pedal frame (201) and a plurality of flip plates (202) movably and equidistantly arranged on the pedal frame (201), wherein a water-absorbing pad (203) is arranged on the flip plates (202); Sliding blocks (204) are symmetrically arranged at both ends of the flip plate (202), a return spring is arranged between the sliding blocks (204) on adjacent flip plates (202), a guide groove (205) for guiding the sliding blocks (204) is arranged on the pedal frame (201), and the flip plate (202) is displaced along the guide groove (205) when the pedal assembly (2) is folded, so that adjacent flip plates (202) are pressed and fitted together; Flip arms (206) are symmetrically arranged at both ends of the flip plate (202); a driving plate (207) matched with the flip arms (206) is arranged on the pedal frame (201); when the pedal assembly (2) is folded, the driving plate (207) drives the flip arms (206) to swing, thereby rotating the flip plate (202) to be in a vertical or nearly vertical state with the stepping plane of the pedal frame (201); The surface of the flip plate (202) is covered with a water-absorbing pad (203); adjacent flip plates (202) are pressed against each other to squeeze out the water in the water-absorbing pad (203).

2. The hidden folding step ladder for a motorhome according to claim 1, characterized in that: The water-absorbing pad (203) is a flexible pad, and the water-absorbing pad (203) is deformed and compressed after being squeezed by force, thereby squeezing out the water absorbed inside.

3. The hidden folding step ladder for a motorhome according to claim 1, characterized in that: One end of the flip arm (206) is connected to the flip plate (202), and the other end is provided with a driving rod (208) that matches the driving plate (207). The driving plate (207) is provided with a driving groove (209) for the driving rod (208) to slide.

4. The hidden folding step ladder for a motorhome according to claim 3, characterized in that: Rotating shafts (210) are fixedly provided at both ends of the flip plate (202), and the rotating shafts (210) are rotated to pass through the sliding blocks (204) and then fixedly connected to the flip arms (206).

5. The hidden folding step ladder for a motorhome according to claim 1, characterized in that: A plurality of guide rods (301) are provided on the driving plate (207), a guide bracket (302) matched with the guide rods (301) is provided on the pedal frame (201), a first pull plate (303) is fixedly provided on the guide rod (301) after sliding through the guide bracket (302), and a first spring (304) is provided between the first pull plate (303) and the guide bracket (302).

6. The hidden folding step ladder for a motorhome according to claim 5, characterized in that: The support frame (1) is provided with an active arm (101) and an auxiliary arm (102) adjacent to the pedal frame (201); the active arm (101) is connected to a driving gear (103); the active arm (101) is provided with a first pull rope rod (104); the first pull rope rod (104) is connected to a first pull plate (303) via a first pull rope (105).

7. The hidden folding step ladder for a motorhome according to claim 6, characterized in that: The active arm (101) is provided with a second pull rope rod (106), the second pull rope rod (106) is connected to a limiting plate (108) via a second pull rope (107), and the second pull rope (107) is passed through the sliding blocks (204) in sequence and then limited by the sliding block (204) at one end via the limiting plate (108).

8. The hidden folding step ladder for a motorhome according to claim 7, characterized in that: The support frame (1) is provided with a first pull rope plate (109) and a second pull rope plate (110) for guiding the first pull rope (105) and the second pull rope (107), and the pedal frame (201) is provided with a third pull rope plate (111) for guiding the second pull rope (107) at one end away from the limiting plate (108).

9. The production equipment for a hidden folding step ladder for a motorhome according to claim 8, characterized in that: The invention comprises a detection frame (4), wherein the detection frame (4) is provided with a driving motor (401) matched with a driving gear (103), the driving motor (401) is provided with a driving gear (402) meshing with the driving gear (103), the support frame (1) is provided with a plurality of mounting holes (112), and the detection frame (4) is provided with a positioning rod (403) matched with the mounting holes (112).

10. The production equipment for a hidden folding step ladder for a motorhome according to claim 9, characterized in that: Distance detectors (404) are symmetrically provided on both sides of the detection frame (4). The distance detectors (404) are used to detect the thickness of each flip plate (202) close to extrusion after folding. The distance detectors (404) and the drive motor (401) are controlled by a PLC controller.

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