WO2023010775A1

WO2023010775A1 - Convenient folding leg

Info

Publication number: WO2023010775A1
Application number: PCT/CN2021/141176
Authority: WO
Inventors: 常晓杰
Original assignee: 安徽泓杰人体工学科技有限公司
Priority date: 2021-08-05
Filing date: 2021-12-24
Publication date: 2023-02-09
Also published as: CN113639166A

Abstract

Disclosed is a convenient folding leg, which comprises a support base, rotating shaft bases and folding legs. The at least two rotating shaft bases are mounted on the support base and can rotate around a vertical rotating shaft which extends in the vertical direction. The folding legs are mounted on the rotating shaft bases and can rotate around a horizontal rotating shaft which extends in the horizontal direction. The folding legs are in one-to-one correspondence with the rotating shaft bases. The upper surfaces of the folding legs are retained by the lower surface of the support base. Avoidance openings are further provided on the circumferential side wall of the support base. The rotating shaft bases rotate such that the folding legs directly face the avoidance openings. The folding legs can be folded upwards by rotating around the horizontal rotating shaft and passing through the avoidance openings. The present invention enables the folding legs to be quickly folded and stably unfolded and supported, has a simple structure, and is easy to use.

Description

Convenient folding legs

technical field

The invention relates to a bracket, in particular to a convenient folding leg.

Background technique

In public places such as conference rooms, floor-standing TV brackets are often used to install large TVs or monitors. Due to the heavy weight and long torque of TVs or monitors, the base needs to have a large enough supporting moment for stable support. Currently, floor-standing TV brackets Most of the bases are one-piece structure, and the overall structure leads to its heavy weight and large area, which cannot be folded, which is not conducive to storage and transportation.

Contents of the invention

In order to overcome the above-mentioned defects, the present invention provides a convenient folding leg, which can make the floor-standing TV stand convenient for storage and transportation, and easy to use.

The technical solution adopted by the present invention in order to solve the technical problem is: a convenient folding leg, including a bracket base, a rotating shaft seat and a folding leg, at least two rotating shaft seats can rotate around a vertical rotating shaft extending in the vertical direction and are installed on the On the bracket base, the folding legs are mounted on the shaft seat so as to be able to rotate around a horizontal shaft extending in the horizontal direction. The folding legs are arranged in one-to-one correspondence with the shaft seat, and the upper surface of the folding leg can be stopped at the lower surface of the bracket base. An avoidance gap is also provided on the outer wall of the circumference of the support base, and the rotation of the rotating shaft seat can make the folding legs face the avoidance gap, and the folding legs can be turned upwards through the avoidance gap by rotating around the horizontal rotating shaft.

As a further improvement of the present invention, the folding legs are provided with a first buckle device, and the bracket base is provided with a second buckle device. The clasp means enables a snap-fit connection.

As a further improvement of the present invention, the first buckling device is a slot or protrusion extending longitudinally on the upper surface of the folding leg, and the second buckling device is a longitudinally extending protrusion located on the lower surface of the support base. A boss or a slot, and the boss can be inserted into the slot.

As a further improvement of the present invention, a folding limit buckle is provided on the side wall of the rotating shaft seat along the rotating direction of the folding leg, an adjusting fastener is provided on the folding leg, and the folding leg is in an upwardly folded folding state , the adjusting fastener is just fastened and connected with the folding limit buckle.

As a further improvement of the present invention, the side wall of the rotating shaft seat along the direction of rotation of the folding leg is also provided with an expansion limit buckle. combined connection.

As a further improvement of the present invention, the folding limit buckle and the unfolding limit buckle on the rotating shaft seat are two slot structures arranged at intervals along the rotation direction of the folding legs, and the adjusting buckles on the folding legs are elastic pins. The elastic pin can be inserted into the slot structure.

As a further improvement of the present invention, the elastic pin can rotate around the horizontal hinge axis and is arranged on the side wall of the folding leg, a ball head structure is provided on one side of the outer wall of the elastic pin circumference, and an elastic member is provided on the folding leg. The component provides the elastic holding force for the elastic pin to keep the ball head structure on the elastic pin in close contact with the side wall where the locking groove structure of the rotating shaft seat is located.

As a further improvement of the present invention, the other side of the circumferential outer wall of the elastic pin forms a tail rod structure, the elastic member is a torsion spring, the torsion spring is sleeved on the horizontal hinge shaft of the elastic pin, and one end of the torsion spring is fixedly connected to the supporting leg , the other end of the torsion spring is pressed against the upper surface of the tail rod structure on the other side of the outer wall of the elastic pin circumference.

As a further improvement of the present invention, a shaft sleeve structure is provided on the rotating shaft seat, a threaded hole is provided on the lower side of the support base, and a cylindrical stepped screw is also provided, and the cylindrical part of the cylindrical stepped screw is passed through the shaft of the rotating shaft seat. In the sleeve structure, the stud part of the cylindrical step screw is screwed with the threaded hole on the direct base.

As a further improvement of the present invention, the bracket base forms an I-shaped structure, and the inner recesses on both sides of the I-shaped structure form a gap for avoiding, and a box structure is also provided on the bracket base, and a side wall with a size wider than the bracket base is formed on the box structure Corresponding to the expansion panel, the folding legs are just located at the back of the expansion panel after being folded.

The beneficial effects of the present invention are: the present invention installs the rotating shaft seat that can rotate around the vertical axis on the support base, installs the folding legs that can rotate and fold around the horizontal rotating shaft on the rotating shaft seat, and sets the avoidance gap on the support base, By turning the rotating shaft seat, the folding back can be placed in the folded position or unfolded position, quickly realizing the fast folding and stable unfolding support of the folded legs, and by setting multiple sets of buckle devices to realize the fastening connection and positioning of the folded legs to the bracket in different states, Realize the stable support of the folding legs and the stable folding state. The invention has a simple structure and realizes the adjustment of the base area of the floor-standing TV stand, which is convenient for the storage and transportation of the stand, reduces the packaging cost of the stand, and is also applicable to the installation of displays of different specifications. , making the floor-standing TV bracket more convenient to use and more space-saving.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the present invention;

Fig. 2 is a perspective view of the present invention in an unfolded support state;

Fig. 3 is the front view of the structural principle of the present invention in the unfolded support state;

Fig. 4 is an enlarged view of part A in Fig. 3;

Fig. 5 is a bottom view of the structure principle of the present invention in a state of unfolded support;

Fig. 6 is the front view of the structural principle of the start adjustment state of the present invention;

Fig. 7 is an enlarged view of part B in Fig. 6;

Fig. 8 is a perspective view of the folding leg of the present invention facing the avoidance gap;

Fig. 9 is a schematic diagram of the folded up state of the folding legs of the present invention;

Figure 10 is an enlarged view of part C in Figure 9;

Fig. 11 is a schematic diagram of the folded legs of the present invention in a folded state;

Fig. 12 is an enlarged view of part D in Fig. 11;

Fig. 13 is a first perspective view of the folding legs of the present invention in a folded state;

Figure 14 is a second perspective view of the folding legs of the present invention in a folded state

Fig. 15 is a perspective view of the present invention in use.

Detailed ways

Embodiment: A convenient folding leg, including a bracket base 1, a rotating shaft seat 2 and a folding leg 3, at least two rotating shaft seats 2 are installed on the bracket base 1 that can rotate around a vertical rotating shaft 4 extending in the vertical direction, and folded The legs 3 are mounted on the shaft seat 2 so as to be able to rotate around the horizontal shaft 5 extending in the horizontal direction. The folded legs 3 are provided in one-to-one correspondence with the shaft seat 2, and the upper surface of the folded legs 3 can stop at the lower side of the bracket base 1. On the surface, there is also an avoidance gap 6 on the outer wall of the circumference of the support base 1, the rotating shaft seat 2 can make the folding leg 3 face the avoidance gap 6, and the folding leg 3 can turn upwards through the avoidance gap 6 when it rotates around the horizontal rotating shaft 5 .

The column of the floor-standing TV bracket is installed on the upper side of the bracket base 1. The bracket base 1 realizes stable support through the unfolding of the folding legs 3, and realizes the storage or the support of a small-sized TV through the folding of the folding legs 3. When unfolded, the rotating shaft is rotated horizontally The seat 2 makes the folding legs 3 on it just stagger with the avoidance gap 6 of the bracket base 1. At this time, the upper side of the folding legs 3 is blocked by the lower side of the bracket base 1, and cannot be folded upwards, so as to keep the horizontal unfolded state, and the folding legs 3. The angle between the folding leg 3 and the folding leg 3 can be adjusted by the height of the support base 1 when unfolding. Generally, a universal wheel 15 is provided at the end of the folding leg 3 away from the rotating shaft seat 2, which is used to easily push the support to change the parking position; When folding, turn the rotating shaft seat 2 horizontally so that the folding leg 3 on it just faces the avoidance gap 6 of the bracket base 1. At this time, the upper side of the folding leg 3 loses the blocking of the lower side of the bracket base 1, and the folding leg 3 can be turned upward to realize Folding, the horizontal and vertical dimensions of the bracket base 1 are greatly reduced after folding, and the space occupied is small, which is convenient for placing or storing in a small space. The support stability is improved, and this structure makes the floor-mounted TV stand widely applicable, flexible to use, easy to store, easy to transport and carry.

The folding leg 3 is provided with a first buckle device 7, and the bracket base 1 is provided with a second buckle device 8. When the folding leg 3 stops on the lower side of the bracket base 1, the first buckle device 7 and the second buckle The buckle device 8 enables a snap-fit connection. When the folding leg 3 is in the unfolded support state, the position of the folding leg 3 is fixed through the fastening connection between the first buckle device 7 and the second buckle device 8, so as to prevent the folding leg 3 from being accidentally touched by an external force and drive the shaft seat 2 to rotate The vertical rotating shaft 4 rotates, causing the folding leg 3 to face the avoidance gap 6 to fold, lose the supporting function, ensure the stable support of the bracket, and avoid the accident of rollover. When folding, the first buckle device 7 and the second locking device The second buckle device 8 is released, and then the rotating shaft seat 2 is turned to realize folding.

The first buckle device 7 is a longitudinally extending slot or boss located on the upper surface of the folding leg 3 , and the second buckle device 8 is a longitudinally extended boss or boss located on the lower surface of the support base 1 . a slot, and the boss can be inserted into the slot. Through the longitudinal insertion of the boss and the slot, the stop positioning of the folding leg 3 and the bracket base 1 in the horizontal direction is realized. The slot is preferably a tapered structure whose opening size is larger than the bottom size, and the boss is a matching cone. Shaped column structure, the two cooperate through the tapered surface to achieve fast insertion. When folding, first turn the folding leg 3 downwards at a certain angle to separate the slot from the convex column, and then turn the rotating shaft seat 2 to realize folding.

The side wall of the rotating shaft seat 2 along the direction of rotation of the folding leg 3 is provided with a folding limit buckle 9, and the folding leg 3 is provided with an adjusting fastener 10. , the adjusting fastener 10 is just connected to the folding limit buckle 9 by fastening. When the folding leg 3 is folded upwards to realize folding, the adjusting fastener 10 on it is fastened and connected with the folding limit buckle 9 on the rotating shaft seat 2, so that the folding leg 3 maintains a stable folding state and avoids falling.

The side wall of the rotating shaft seat 2 along the rotation direction of the folding leg 3 is also provided with an unfolding limit buckle 11. When the folding leg 3 is in the unfolded support state, the adjusting fastener 10 is just engaged with the unfolding limit buckle 11 connect. When the folding leg 3 is in the unfolded support state, the stable support of the folded leg 3 in the unfolded support state is further improved by the fastening connection between the adjusting fastener 10 and the unfolding limit buckle 11. Only when the unfolding limit buckle 11 and the adjusting buckle Folding can only be realized after the part 10 is released to avoid misuse. At the same time, it can also maintain a stable horizontal height when the folding legs 3 are unfolded. When moving the floor stand, the folding legs 3 will not sag due to gravity. It is ensured that the folding legs 3 always maintain a stable support state after any operation, which improves the safety of the floor-standing TV stand.

The folding limit buckle 9 and the unfolding limit buckle 11 on the shaft seat 2 are two slot structures arranged at intervals along the rotation direction of the folding leg 3, and the adjusting buckle 10 on the folding leg 3 is an elastic pin. The elastic pin can be inserted into the said slot structure. The elastic force of the elastic pin realizes automatic buckling with the card slot structure, and when the folding leg 3 is opened or folded when it needs to be released, it only needs to operate and adjust the fastener 10 to overcome the elastic force and fold the limit buckle 9 or unfold the limit card Buckle 11 can be released. After the adjustment fastener 10 loses the artificial external force, it will automatically stick to the surface of the shaft seat 2 under the action of elastic force. When it is facing the folding limit buckle 9 or the unfolding limit buckle 11, It will realize automatic buckle connection to ensure safe use and avoid safety problems caused by forgetting to reset.

The elastic pin can rotate around the horizontal hinge axis and is arranged on the side wall of the folding leg 3, a ball head structure is provided on one side of the outer wall of the elastic pin circumference, and an elastic member is provided on the folding leg 3, and the elastic member provides the elastic pin with Maintain the elastic holding force that the upper ball head structure and the side wall where the locking groove structure of the rotating shaft seat 2 is closely attached. The elastic pin rotates around the horizontal axis with the folding leg 3, and the ball head on one side receives the resistance effect of the side wall of the slot structure on the rotating shaft seat 2 and overcomes the elastic force to rotate around the horizontal hinge axis. When the folding leg 3 is rotated in place, Under the action of elastic force, the elastic pin automatically resets to maintain the fastening state with the card slot structure on the shaft seat 2, and then realizes its insertion, buckle, or release with the card slot structure on the shaft seat 2. The card slot structure is the best In order to match the arc groove, the shaft seat 2 is best provided with a longitudinally extending arc surface, the ball head on one side of the elastic pin can slide along the arc surface, and the slot structure on the shaft seat 2 is arranged at both ends of the arc surface. Yes, the elastic pin can also be a straight-line telescopic structure, and through its telescopic action, it can be fastened and connected to or released from the folding limit buckle 9 and the unfolding limit buckle 11 .

The other side of the outer wall of the elastic pin circumference forms a tail rod structure. The elastic member is a torsion spring 12. The torsion spring 12 is sleeved on the horizontal hinge shaft of the elastic pin. The other end abuts against the upper side surface of the tail rod structure on the other side of the outer wall of the elastic pin circumference. In addition to using the torsion spring 12 to realize the reset of the elastic pin, it can also be realized by a tension spring or a compression spring. This is an equivalent replacement structure that can be easily imagined by those skilled in the art according to this patent, and belongs to the scope of protection of this patent. The folding leg 3 faces the shaft seat 2 One end preferably forms a U-shaped opening structure, the side wall of the rotating shaft seat 2 can be inserted into the U-shaped structure, the horizontal rotating shaft 5 is installed on the two side walls of the U-shaped structure, and the elastic pin is also arranged on the U-shaped In the opening structure, the tail rod structure on the elastic pin can protrude outside the U-shaped opening groove structure, and a finger pressing part can be set on the tail rod structure, which is used to manually operate the elastic pin, realize manual release, and realize folding and unfolding operate.

The rotating shaft seat 2 is provided with a shaft sleeve structure, the lower side of the support base 1 is provided with a threaded hole, and a cylindrical stepped screw is also provided, and the cylindrical part of the cylindrical stepped screw is set in the shaft sleeve structure of the rotating shaft seat 2, The stud portion of the cylindrical step screw is threaded into the threaded hole directly on the base. In this structure, the cylindrical stepped screw just forms the vertical shaft 4, and after being fixed by the cylindrical stepped screw, the rotating shaft seat 2 can be rotated at a fixed point and is arranged on the lower side of the bracket base 1. In addition, the rotating shaft base 2 can also be riveted on the support base 1 by riveting, and the rivet becomes the vertical rotating shaft 4. This is an equivalent replacement structure that can be easily imagined by those skilled in the art according to this patent, and belongs to the protection scope of this patent.

The support base 1 forms an I-shaped structure, and the inner recesses on both sides of the I-shaped structure form an avoidance gap 6. The support base 1 is also provided with a box structure 13. The box structure 13 is formed with a side wall corresponding to the size of the support base 1. The outer expansion panel 14 of the outer expansion panel 14, the folding legs 3 are just located on the back of the outer expansion panel 14 after being folded. Forming the box structure 13 on the support base 1 can be used to place electronic components and parts, etc., forming an outer expansion panel 14 on the box body, forming the front of the support by the outer expansion panel 14, making the support more beautiful, and the outer expansion panel 14 pairs of folding legs 3. A shield is formed in the folded state, which is conducive to improving the overall aesthetics of the bracket.

Claims

A convenient folding leg, characterized in that it includes a bracket base (1), a rotating shaft seat (2) and a folding leg (3), at least two rotating shaft seats can rotate around a vertical rotating shaft (4) extending in the vertical direction Installed on the base of the bracket, the folding legs can be rotated around the horizontal shaft (5) extending in the horizontal direction and installed on the shaft seat, the folding legs and the shaft seats are arranged in one-to-one correspondence, and the upper side surface of the folding legs can stop on the bracket The lower side surface of the base and the peripheral side wall of the support base are also provided with an avoidance gap (6).
The convenient folding leg according to claim 1, characterized in that: the folding leg is provided with a first buckle device (7), the bracket base is provided with a second buckle device (8), and the folding leg stops at The first buckle device and the second buckle device can be buckled and connected when the lower side of the bracket base is on the lower side.
The convenient folding leg according to claim 2, characterized in that: the first buckle device is a slot or a post extending longitudinally on the upper surface of the folding leg, and the second buckle device is a A protruding post or a slot extending longitudinally on the lower surface, the protruding post can be inserted into the slot.
The convenient folding leg according to claim 1, characterized in that: the side wall of the rotating shaft seat along the rotation direction of the folding leg is provided with a folding limit buckle (9), and the folding leg is provided with an adjustment fastener ( 10), when the folding legs are in the folded state of turning up, the adjusting fastener is just fastened and connected with the folding limit buckle.
The convenient folding leg according to claim 4, characterized in that: the side wall of the rotating shaft seat along the rotation direction of the folding leg is also provided with an expansion limit buckle (11), when the folding leg is in the unfolded support state, The adjusting fastener is just fastened and connected with the expansion limit buckle.
The convenient folding leg according to claim 5, characterized in that: the folding limit buckle and the unfolding limit buckle on the rotating shaft seat are two card slot structures arranged at intervals along the rotation direction of the folding leg, and the folding limit buckle on the folding leg The adjusting buckle is an elastic pin, and the elastic pin can be inserted into the slot structure.
The convenient folding leg according to claim 6, characterized in that: the elastic pin can rotate around the horizontal hinge axis and is arranged on the side wall of the folding leg; An elastic member is provided, and the elastic member provides elastic holding force for the elastic pin to keep the ball head structure on the elastic pin in close contact with the side wall where the locking groove structure of the rotating shaft seat is located.
The convenient folding leg according to claim 7, characterized in that: the other side of the outer wall of the elastic pin forms a tail rod structure, the elastic member is a torsion spring (12), and the torsion spring is sleeved on the horizontal hinge of the elastic pin On the shaft, one end of the torsion spring is fixedly connected with the support leg, and the other end of the torsion spring is pressed against the upper surface of the tail rod structure on the other side of the outer wall of the elastic pin circumference.
The convenient folding leg according to claim 1, characterized in that: a shaft sleeve structure is provided on the rotating shaft seat, a threaded hole is provided on the lower side of the support base, and a cylindrical step screw is provided, and the cylindrical step screw of the cylindrical step screw The part passes through the shaft sleeve structure of the rotating shaft seat, and the stud part of the cylindrical step screw is screwed with the threaded hole on the direct base.
The convenient folding leg according to claim 1, characterized in that: the base of the bracket forms an I-shaped structure, the inner recesses on both sides of the I-shaped structure form avoidance gaps, and a box structure (13) is also provided on the base of the bracket, the box structure An outer expansion panel (14) corresponding to the wide side wall of the support base is formed on the top, and the folded legs are just located on the back of the outer expansion panel after being folded.