JP2005179888A - Base frame tilting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base frame tilting device which is capable of stably and positively tilting a base frame member from its stored position to a service position, free from a fear of sudden movement of the base frame member, excellent in operability, on-the-job safety, and cost efficiency, and dispenses with a complicated adjusting mechanism that requires maintenance. <P>SOLUTION: The base frame tilting device 10 is formed of the base frame member 11 having an almost rectangular shape and serving as a ladder or a rack; a sliding bearing section 12 for slidably holding the base frame member 11 in a planar direction; a base frame member storage section 13 for pivoting a rotary shaft 12a provided for the sliding bearing section 12; an energizing means 14 for energizing the sliding bearing section 12 to the base frame stored position of the base frame storage section 13; a cam portion 15 fixed to the rotary shaft 12a of the sliding bearing section 12, for rotation; and a roller portion 16 arranged on the base frame member storage section 13 to abut on the cam portion 15 via its tip, to thereby lock rotation of the sliding bearing section 12 at a predetermined rotation angle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention advances and retracts a base frame member such as a roof rack for mounting equipment and transported items such as ladders and skis on a roof surface of an automobile such as a wagon car and a light van, and a movable ladder stored in an attic room. It is related with the base frame tilting device which can work safely.

Conventionally, as a tilting device including a base frame member such as a ladder or a rack, one applied to a base frame member such as a roof rack for a vehicle is known. As such a roof rack, for example, a pair of lip groove-shaped rails attached to a roof of a vehicle or the like via a support, a carriage having a plurality of pairs of casters engaged with the same pair of rails, and one end of the carriage And a loading portion connected by a hinge joint, and the loading portion moves to one side of the rail located in the direction of one end and stops at a stop provided in advance. Loading a heavy load such as a sliding ladder having a length arranged between the ground and the pair of rails, the pair of rails having a length capable of storing the carriage and the loading portion. There was a device. (See Patent Document 1)
Similarly, as the roof rack, for example, a pair of left and right rollers having a load frame that can move along a pair of left and right fixed rails disposed on the upper surface of the roof of the vehicle, and pivotally supported in an intermediate portion near the center of the load frame. The carrier frame that has been pulled out until it is inscribed in the end stopper of the rail is disposed outside the vehicle so that the seesaw can be tilted around each roller as a fulcrum, and the carrier frame is designed to alleviate the downward tilting operation toward the front. Some had directional elastic dampers in the loading frame. (See Patent Document 2)
Furthermore, as an example of a device equipped with a base frame tilting device, a lid plate is pivotally attached to one side edge of a substantially rectangular opening formed in the ceiling so as to be swingable and openable, and can be stored and extended on the upper surface side of the lid plate. Is a ceiling storage ladder in which a movable ladder located on the floor side is connected to a fixed ladder located on the ceiling side in the ladder unit so as to be extendable in the direction of the ceiling floor. An adjusting extension rod mechanism for adjusting the inclination angle is installed over the ladder unit and the ceiling side portion, and an adjusting operation portion that can be operated by a person standing on the floor is provided in the adjusting extension rod mechanism. There was something to be. (See Patent Document 3)
Japanese Utility Model Publication No. 1-94153 JP 2002-36963 A Japanese Utility Model Publication No. 6-20900

  However, the prior art is simply connected by a hinge joint (see Patent Document 1), provided with a damper (see Patent Document 2), or a gas spring and ladder inclination adjustment. However, there is a problem as follows.

  In the one described in Patent Document 1, when the roof rack whose end is grounded is tilted and returned onto the roof of the vehicle, the roof rack must be pushed and placed at a predetermined mounting position, which is inconvenient. Lack of certainty and operability of setting work. In addition, when a long or heavy object is loaded on a cart on the roof rack and pulled out and tilted, the weight of the roof rack is tilted while directly supporting it. There was a problem of being forced to change or be forced.

In the one described in Patent Document 2, even if the force by the damper and the weight of the loading frame and the load are adjusted, the tilting operation of the loading frame becomes unstable and the loading frame suddenly jumps up or down. There is a problem that it may start to move suddenly and may lack work safety.
In the thing of patent document 3, the extension mechanism for adjustment etc. which adjusts the repulsive force by a gas spring according to the height which a ladder contacts to the ground, and also prevents a ladder from jumping up after setting to the use angle of a ladder, etc. Is required. Further, even if such an adjusting extension mechanism is installed, fine adjustment is required according to the force of the gas spring, the ladder weight, and the ladder length, which is troublesome. Moreover, such an extension mechanism for adjustment tends to be disturbed when a person raises or lowers the ladder, and there is a problem that usability deteriorates.

  The present invention has been made to solve the above-described conventional problems. The base frame member can be stably and reliably tilted from the storage position to the work position, and there is no risk of sudden movement. An object of the present invention is to provide a base frame tilting device which is excellent in safety and does not require a complicated adjustment mechanism requiring maintenance, and which is excellent in economy.

(1) A base frame tilting device according to the present invention includes a base frame member formed in a substantially rectangular shape serving as a ladder or a rack, and a slide receiving portion that slidably holds the base frame member along its surface direction. A base frame member storing portion that pivotally supports a rotation shaft provided in the slide receiving portion; biasing means for biasing the slide receiving portion to a base frame storing position of the base frame member storing portion; and the slide A rotation restricting means for restricting the rotation of the slide receiving portion at a predetermined rotation angle of the receiving portion.

(2) In the base frame tilting device of the present invention, in (1), the rotation restricting means is fixed to the rotation shaft of the slide receiving portion and rotated, and the base frame member is stored. And a roller portion that is disposed at the front end and abuts against the cam portion to stop the rotation of the slide receiving portion at a predetermined rotation angle.

(3) In the base frame tilting device according to the present invention, in the above (1) or (2), the mounting position of the cam part or / and the roller part arranged in the base frame member storage part is set, and the base frame It is comprised so that it may have a rotation angle setting means which adjusts the rotation angle used as the working position where the member was pulled out.

(4) In the base frame tilting device according to the present invention, in (1) to (3), the biasing means that biases the slide receiving portion to the storage position of the base frame member adjusts the elastic force. Means are provided.

(5) The base frame tilting device according to the present invention is configured such that, in the above (1) to (4), the base frame member storage unit is fixedly installed on a roof of a car or a ceiling back part of a building. .

  According to invention of Claim 1, the base frame member formed in the substantially rectangular shape used as a ladder or a rack, the slide receiving part which hold | maintains the said base frame member slidably along the surface direction, The said, A base frame member storage that pivotally supports a rotation shaft provided in the slide receiver, a biasing means that biases the slide receiver to a base frame storage position of the base frame member storage, and the slide receiver And a rotation restricting means for restricting the rotation of the slide receiving portion at a predetermined rotation angle, so that the base frame member is tilted stably and reliably from the storage position to the working position using the rotation restricting means. In addition, it can be held at the work position, and the force required to return to the storage position can be reduced, resulting in excellent operability and work safety.

  According to a second aspect of the present invention, the rotation restricting means is fixed to the rotation shaft of the slide receiving portion and rotated, and the tip of the cam portion is disposed in the base frame member storage portion. And a roller portion that is in contact with the cam portion and locks the rotation of the slide receiving portion at a predetermined rotation angle, so that a maintenance function is not required without requiring a complicated adjustment mechanism such as a damper mechanism. It is possible to provide a base frame tilting device composed of a cam portion and a roller portion that are superior to each other at low cost.

  According to the third aspect of the present invention, the rotation angle at which the mounting position of the cam portion and / or the roller portion arranged in the base frame member storage portion is set and becomes the working position where the base frame member is pulled out. Rotation angle setting means can be provided, and the locking rotation angle can be adjusted each time according to the vehicle type applied to the slide-type roof rack, which is excellent in versatility.

  According to invention of Claim 4, since the urging means which urges | biases the said slide receiving part to the storage position of the said base frame member can also be provided with the elastic adjustment means which adjusts the elastic force, it is attached to a base frame member. The operability can be adjusted as appropriate according to the type of load and the operator, so that the base frame member can be handled without difficulty and safely.

  According to the fifth aspect of the present invention, since the base frame member storage unit is fixedly installed on the roof of the automobile or the ceiling of the building, heavy objects are loaded on the base frame member serving as a roof rack. The base frame member can be handled by sliding the base frame member backward from the base frame member storage part fixed to the roof or ceiling of the automobile and tilting it downward, with the tip of the base frame member grounded. Moreover, since the cam portion and the roller portion are provided, the sliding operation of the slide receiving portion can be ensured, and a safe operation can be performed. Further, since a complicated adjustment mechanism such as a gas spring and a damper is not required as in the prior art, a vehicle roof rack excellent in operability and safety can be provided at a very low cost.

A base frame tilting device according to an embodiment of the present invention includes a base frame member formed in a substantially rectangular shape serving as a ladder or a rack, and a slide receiving portion that slidably holds the base frame member along its surface direction. A base frame member storage that pivotally supports a rotation shaft provided in the slide receiver, and a biasing means that biases the slide receiver to a base frame storage position of the base frame member storage, A rotation restricting means for restricting the rotation of the slide receiving portion at a predetermined rotation angle of the slide receiving portion.
That is, the base frame tilting device includes a biasing means that biases the slide receiving portion that slides and holds the base frame member toward the storage position of the base frame member storage portion, and a rotation for defining the rotation position of the slide receiving portion. Since the restricting means is provided, the base frame member can be tilted stably and reliably from the storage position to the work position. In particular, since the base frame member can be held at the working position by the rotation restricting means, the workability is good, and the force required to pull up the base frame member by the biasing means when returning to the storage position after that. Therefore, it is extremely excellent in operability and work safety. In addition, it is economical because it does not require a complicated adjustment mechanism that requires maintenance.

The base frame tilting device can be applied to uses such as a movable ladder that can be stored in a roof rack of a vehicle or an attic of a building. The main part of the tilting / drawing device is made of aluminum, aluminum alloy, stainless steel or the like and has the necessary strength and rigidity.
The base frame member is a generally rectangular member that functions as a work ladder for moving up and down on the ceiling of a building, a roof of a vehicle, and a rack on which a transported item or stored item is stacked.
The slide receiving part has a function of holding the base frame member slidably and tilting the whole through its rotation shaft to rotate the base frame member that slides.
The base frame member storage is fixed to the ceiling of the building or the roof of the vehicle via a fixture or the like, and stores the base frame member in its storage position and via a slide receiver that supports the base frame member. To rotate.

  The rotation restricting means is a mechanism for restricting the rotation of the slide receiving portion at a predetermined rotation angle of the slide receiving portion, such as a cam mechanism by a combination of a cam and a roller, a rack gear or the like and a link. A rack link mechanism composed of a combination of As a result, the slidable receiving portion is locked at every predetermined angle or reliably stopped at the end work position, thereby ensuring the operability and safety of the base frame tilting device.

  The urging means is disposed between the pivoted slide receiving portion and the base frame member storing portion or on the rotating shaft, and functions to urge the slide receiving portion to the storing position. As such an urging means, an elastic body such as a torsion spring or a coil spring can be suitably used. For example, a rotating shaft fixed to the slide receiving portion using a gas damper or the like can be used in one side direction. Something like energizing is also applicable.

An elastic adjustment means for controlling the urging force or elastic force of the rotating shaft added by the urging means can also be provided. That is, the elastic adjustment means is safe because the base frame member does not rotate suddenly even if the base frame member to be moved is released, and the rotation operation can be easily performed by the biasing force of the biasing means. The burden on the operator can be reduced.
Further, by arranging the urging means and the elastic adjusting means linearly on the rotation shaft, the tilting / drawing device can be made compact, and the device can be easily installed and attached.
Further, when the urging means and the elastic auxiliary means are attached to the rotating shaft, a pair of urging means are attached to the rotating shaft at a predetermined interval, and the elastic auxiliary means is attached between the urging means. Can do. With such an arrangement, the functions of both means can be applied in a balanced manner, and the design is good and the appearance is improved.

Further, the urging force of the urging means can be adjusted by the elastic adjusting means.
For example, the urging force can be adjusted by the amount of bending of the elastic body constituting the urging means, the amount of bending can be adjusted by a screwing method, etc., and a scale corresponding to the amount of screwing and the amount of bending can be provided. For example, the biasing force can be easily adjusted by visual observation with a simple operation.
The elastic adjustment means can be constituted by a friction mechanism that suppresses the rotation of the rotation shaft. As such a friction mechanism, a combination of a brake drum and a shoe or a combination of a brake disk and a pad can be considered. In any case, the brake device is highly reliable and has a proven track record in various fields and is inexpensive. Can be manufactured.
The elastic adjustment means is preferably configured so that the frictional force can be freely adjusted. In this case, the frictional force can be adjusted by changing the contact amount between the shoe and the drum, the pad and the disc, and the scale that makes the deviation between the shoe and the pad and the drum or the disc correspond to the friction amount. It is good to provide. Also in this case, the frictional force can be easily adjusted visually.

Hereinafter, embodiments of the present invention will be described more specifically with reference to the drawings.
(Embodiment 1)
1 is an explanatory view showing a use state of a vehicle to which a base frame tilting device according to Embodiment 1 of the present invention is applied, FIG. 2 is a plan view of the base frame tilting device, FIG. 3 is a front view thereof, and FIG. Is a side view, FIG. 5 is a plan view of the main part, FIG. 6 is a front view of the same, FIG. 7 is a side view of the same, and FIG. 8 is an enlarged view of the main part.
1 to 4, reference numeral 10 denotes a base frame tilting device 10 according to the first embodiment, and 11 a substantially rectangular base frame member formed so as to function as a work ladder or a rack for placing a transported object. , 12 is a slide receiving portion for slidably holding the base frame member 11 along its surface direction, and 13 is a pivot shaft 12a provided on the slide receiving portion 12 and supports the roof R of the automobile C. A base frame member storage section 14 is attached to the base frame member storage section 14 through a support member 13a, and biasing means 14 includes a spring 14a for biasing the slide receiving section 12 to the base frame storage position of the base frame member storage section 13. .
As shown in the figure, the base frame tilting device 10 according to the present embodiment is used as a vehicle roof rack and is mounted on a roof R of an automobile C.
The base frame member storage portion 13 is fixedly arranged on the roof R of the automobile C, and the base frame member 11 is placed on the rear side of the vehicle by grasping the portal handle 11a, the handle 11b, etc. provided on the base end side of the base frame member 11. While sliding on the slide receiving part 12, it can be tilted downward via the rotating shaft 12a, and the front-end | tip of the base frame member 11 can be earth | grounded and loading and taking-out of the load to a ladder, a rack, etc. can be performed. When storing the base frame member 11 formed by assembling the step bars 11c in multiple stages on the roof R, the base frame member 11 is tilted so as to push upward, and is made to be horizontal and then slid forward. Further, it is possible to load a transported item or the like on the base frame member 11. A ring body 12b is rotatably attached to the front and rear of the slide receiving portion 12.

As shown in FIGS. 5 to 8, the urging means 14 engages one end of the spring 14 a with the spring engaging portion 14 b of the slide receiving portion 12, and the other end engages with the spring engaging portion of the base frame member storage portion 13. The slide receiving portion 12 that is locked to the portion 14c and is rotated by the base frame member storage portion 13 through the rotation shaft 12a is attracted and biased to the storage position side by a predetermined elastic force. Is arranged.
6 and 8, reference numeral 15 denotes a cam portion that is fixedly rotated on the rotation shaft 12 a of the slide receiving portion 12, and 16 is disposed in the base frame member storage portion 13, and the tip thereof is connected to the cam portion 15. It is a roller part for abutting and stopping the rotation of the slide receiving part 12 at a predetermined rotation angle. Note that the rotation restricting means of the first embodiment is configured to have a cam portion 15 and a roller portion 16.
The cam portion 15 is fixedly disposed on the rotation shaft 12 a of the slide receiving portion 12 and is rotated with the rotation of the slide receiving portion 12. A roller portion 16 to which a predetermined pressing force is applied by a compression spring 16 a so as to contact the rotating cam portion 15 is disposed in the base frame member storage portion 13. The base frame member storage portion 13 is provided with an adjustment screw 16b that can appropriately adjust the pressing force of the compression spring 16a. This allows the weight of the load mounted on the base frame member 11 and the operator to adjust the pressing force. Loading operations and the like can be easily performed according to different operability.

FIG. 9 is an explanatory view showing a modification example 1 of the rotation restricting means in the first embodiment. As shown in the figure, the rotation restricting means 17 of the modification example is fixed to the rotating shaft 12a of the slide receiving portion 12 and rotated. There is provided a ratchet gear 17a to be moved, and a plunger portion 17e engaged with a recess between the ratchet claws 17b and pressed at the tip ball 17c via a spring 17d.
The ratchet pawls 17b are arranged on the circumference of the ratchet gear 17a at a predetermined interval, and the balls 17c of the plunger portion 17e are placed on the slide receiving portion 12 by fitting into the recesses between the ratchet pawls 17b. The base frame member 11 can be operated to be moved little by little while being locked at predetermined rotation angles, and the base frame member 11 can be held near the ground contact surface. This makes it possible to increase safety.

FIG. 10A is a front view showing a modified example 2 of the rotation restricting means in the first embodiment, and FIG. 10B is a side view thereof.
The rotation restricting means 18 of the modification example 2 also functions as a rotation angle setting means for setting the rotation angle of the base frame member 11, and as shown in the drawing, on the rotation shaft 12a of the slide receiving portion 12. A shaft 18b that is connected and fixed via a pin hole or the like (not shown), a cam receiving portion 18c that is suspended from the shaft of the shaft 18b in a flange shape, and a cam portion that is disposed at a predetermined mounting position on the cam receiving portion 18c. 18d and a roller support portion 18f having a roller portion 18e that comes into contact with the cam portion 18d.
The cam portion 18d includes a plurality of position adjusting grooves 18g formed in an elongated hole shape, and by tightening or loosening a locking tool 18h such as a bolt engaged with the cam portion 18d, the mounting position is moved. The locking rotation angle at which the slide receiving portion 12 is locked by the cam portion 18d and the roller portion 18e can be adjusted to a predetermined position.

FIG. 11A is an operation explanatory view of a third modification of the rotation restricting means in the first embodiment, and FIG. 11B is a sectional view thereof.
As shown in the figure, the rotation restricting means 19 of the third modification example is a rack tooth member that is provided on both ends of the base frame member 11 that slides on the slide receiving portion 12 via a spring member 19a and a link mechanism 19b. 19c and a fixed tooth member 19e fixed to the base frame member storage portion 13 so as to mesh with the rack teeth 19d of the rack tooth member 19c at a predetermined angle.
The rack teeth 19d are held in a state of being separated from the fixed tooth member 19e when the slide receiving portion 12 is in a horizontal state, and the base frame member 11 can slide on the slide receiving portion 12. The base frame member 11 is horizontally moved to a predetermined position on the slide receiving portion 12, and the rotation shaft 12a of the slide receiving portion 12 is rotated to a predetermined angle, whereby the rack teeth 19d are arranged at a predetermined angle. It is meshed with the fixed tooth member 19e of the frame member storage part 13, and the whole is fixed at a predetermined locking rotation angle.
When the base frame member 11 is returned to the base frame member storage portion 13, the arm 19f of the link mechanism 19b is operated to disengage the rack tooth member 19c from the fixed tooth member 19e as shown by the arrow, An operation of pulling back the slide receiving portion 12 on which the frame member 11 is placed to a substantially horizontal position can be performed.

The base frame tilting device 10 according to the first embodiment is configured without the need for an adjustment mechanism that is complicated and requires maintenance as described above, and is excellent in maintainability. In addition, the biasing means 14, the cam portion 15, and the roller portion 16 are provided. Therefore, the base frame member 11 can be tilted stably and reliably from the storage position to the work position, and the operability and work safety are excellent.
Further, even when heavy objects are loaded on the base frame member serving as the roof rack, the base frame member 11 is slid rearward from the base frame member storage portion 13 fixed to the roof R of the automobile C by the support member 13a. The stored items can be handled with the bottom end of the base frame member 11 being grounded. In addition, since the rotation restricting means having a simple configuration is provided, the rotation operation of the slide receiving portion 12 is ensured, and the loading and unloading work of the transported material and the like on the base frame member 11 is performed safely and efficiently. Can do.

(Embodiment 2)
FIG. 12 is an explanatory view of the open / close state of the base frame member in the base frame tilting device of the second embodiment.
In FIG. 12, 20 is the base frame tilting device of the second embodiment, 21 is the mounting position of the spring locking portion 21a to which the end of the spring 14a as the biasing means 14 on the base frame member storage portion side is locked. This is an elastic adjustment means that can be adjusted by screw operation. In addition, in Embodiment 2, what has the same function as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. Further, the display of the base frame member 11 is omitted in FIG.
The elastic adjusting means 21 includes a rotating screw shaft 21d whose both ends are rotatably provided to the side portion of the base frame member storage portion 13 via screw shaft supports 21b and 21c. Accordingly, the spring locking portion 21a that is screwed and supported through the rotation screw shaft 21d by locking the tip of the driver in a groove or the like provided in the end portion of the rotation screw shaft 21d and rotating a predetermined number of times is provided. By moving on the rotating screw shaft 21d, the screw locking portion 21a can be adjusted and fixed at the predetermined position. Thus, the open state of the slide receiving portion 12 shown in FIG. 12A and the closed state of FIG. 12B (the slide receiving portion 12 and the base frame member 11 are placed on the base frame member storage portion 13. It is possible to maintain the ease of handling and safety by adjusting the elastic force of the urging means 14 when the base frame member 11 is moved between the storage state and the storage state.

FIG. 13 is an explanatory diagram of a rotation angle setting method in the base frame tilting device 20. A suitable mechanism when the base frame member 11 is pulled out from the base frame member storage 13 and tilted and its lower end is grounded according to the difference in the size and form of the vehicle model to which the base frame tilting device 20 is applied. A method for setting the stop rotation angle θ will be described with reference to the drawings.
The locking rotation angle θ when the slide receiving portion 12 on which the base frame member 11 is mounted is rotated and the movement of the cam portion 15 fixed to the rotation shaft 12a is locked by the roller portion 16 and stopped is predetermined. When set to a value, as shown in FIG. 13 (a), the rotation angle formed in a predetermined shape such as a substantially comb shape for fixing the roller portion 16 at a predetermined position on the side surface of the base frame member storage portion 13. The angle adjusting liner 22 serving as setting means is attached in a state of being inserted between the roller attachment member 23 for attaching the roller portion 16 and the base frame member storage portion 13.
As a result, as shown in the figure, the mounting position (height H) of the roller section 16 is adjusted to Ha or Hb depending on whether or not the angle adjusting liner 22 is mounted, and locked according to the position of the roller section 16. The locking rotation angle of the cam portion 15 can be set to predetermined angle values such as θa shown in FIG. 12A and θb shown in FIG.

The base frame tilting device 20 according to the second embodiment is configured as described above, and sets the mounting position of the roller unit 16 disposed in the base frame member storage unit 13 to be a work position where the base frame member is pulled out. Since there is a rotation angle setting means such as an angle adjustment liner 22 for adjusting the moving angle, the locking rotation angle is adjusted according to the type of the automobile C applied to the slide movable roof rack. It has excellent versatility.
Furthermore, since the biasing means 14 for biasing the slide receiving portion 12 to the storage position of the base frame member 11 includes the elastic adjustment means 21 for adjusting the elastic force, Usability and safety are improved by making it possible to adjust the operability as appropriate according to the physical strength of the operator.

(Embodiment 3)
FIG. 14 is an explanatory diagram of an urging unit including an elastic adjustment unit in the base frame tilting device according to the third embodiment.
In FIG. 14, 30 is the base frame tilting device of the third embodiment, 31 is a chain locking portion provided at a predetermined position of the slide receiving portion 12, and 32 is a chain whose one end is locked to the chain locking portion 31. , 33 is a chain locking roller which is wound around the other end side 32a of the chain 32 and fixedly arranged on the side surface of the base frame member storage portion 13, and 34 is attached by pulling the connection of the other end side 32a of the chain 32. A tension spring 35 is provided, and elastic adjustment means 35 is provided in the base frame member storage portion 13 and includes a screw mechanism for adjusting the base end mounting position of the tension spring 34.
In addition, in Embodiment 3, what has the same function as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. In FIG. 14, the base frame member 11 is omitted.
In the base frame tilting device 30 according to the third embodiment, the biasing means for biasing the slide receiving portion 12 that tilts with the base frame member 11 to the storage position is the chain 32, the tension spring 34, and the chain locking mechanism. It has a roller 33 and has an elastic adjustment means 35 for adjusting the elastic force of the urging means. A predetermined urging force can be applied to the slide receiving portion 12 via the chain 32 and the chain locking roller 33, and the tension spring 34 is built in the base frame member storage portion 13 to make the arrangement compact, The width of the design and the like can be expanded, and versatility in the base frame tilting device 30 can be further enhanced.

  The present invention relates to the field of base frame tilting devices such as roof racks for mounting equipment and transported items such as ladders and skis on automobile roof surfaces such as wagon cars and light vans, and ladders stored in attic rooms, etc. It is possible to provide a base frame tilting device that can stably and reliably tilt the base frame member from the storage position to the work position, and is excellent in operability and work safety. Furthermore, it does not require an adjustment mechanism that is complicated and requires maintenance, and is economical.

It is explanatory drawing which shows the use condition of the base frame tilting apparatus of Embodiment 1. FIG. It is a top view of the base frame tilting device. It is the same front view. It is the same side view. It is a top view of the principal part. It is a front view of the principal part. It is a side view of the principal part. It is an enlarged view of the principal part. It is explanatory drawing which shows the example 1 of a change of the rotation control means. It is explanatory drawing which shows the example 2 of a change of the rotation control means which made it possible to set the rotation angle in a base frame tilting apparatus. It is explanatory drawing which shows the example 3 of a change of the rotation control means. It is explanatory drawing of the use condition in the base frame tilting apparatus of Embodiment 2. FIG. It is explanatory drawing of the rotation angle setting method in the base frame tilting apparatus. FIG. 10 is an explanatory diagram of urging means of the base frame tilting device according to the third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Base frame tilting apparatus which concerns on Embodiment 1 11 Base frame member 11a Gate-type handle 11b Handle 11c Step rail 12 Slide receiving part 12a Rotating shaft 12b Ring body 13 Base frame member storage part 13a Support member 14 Energizing means 14a Spring 14b Spring locking part 14c Spring locking part 15 Cam part 16 Roller part 16a Compression spring 16b Adjustment screw

Claims (5)

  A base frame member formed in a substantially rectangular shape to be a ladder or a rack, a slide receiving part that slidably holds the base frame member along its surface direction, and a pivot shaft provided in the slide receiving part A base frame member storing portion that pivotally supports the slide receiving portion, biasing means for biasing the slide receiving portion to a base frame storing position of the base frame member storing portion, and the slide receiving portion at a predetermined rotation angle of the slide receiving portion. And a rotation restricting means for restricting the rotation of the base frame tilting device.   The rotation restricting means includes a cam portion that is fixedly rotated on the rotation shaft of the slide receiving portion, and a base frame member storage portion, the tip of which is in contact with the cam portion and a predetermined rotation. The base frame tilting device according to claim 1, further comprising: a roller portion that locks the rotation of the slide receiving portion at a moving angle.   There is a rotation angle setting means for setting a mounting position of the cam portion and / or roller portion arranged in the base frame member storage portion and adjusting a rotation angle to be a work position where the base frame member is pulled out. The base frame tilting device according to claim 2, wherein:   The urging means for urging the slide receiving portion to the storage position of the base frame member includes an elastic adjusting means for adjusting an elastic force thereof. Base frame tilting device.   The base frame tilting device according to any one of claims 1 to 4, wherein the base frame member storage unit is fixedly installed on a roof of an automobile or a ceiling back part of a building.

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