CN115736546A - Hinge folding support - Google Patents

Abstract

The application discloses a hinged folding bracket, which belongs to the field of outdoor products. It includes: a base; outriggers, telescopic support rods; the hinged folding bracket also includes: a moving seat, which is movably installed on the base so that the moving seat has a first moving position and a second moving position relative to the base; A transmission is formed between the moving base and the leg so that the leg has at least a first transmission position for expansion and a second transmission position for retraction relative to the base; wherein, the transmission member and the moving base form a rotational connection that rotates around the movable axis When the moving seat is at the first moving position, the driving transmission member moves to move the legs to the first transmission position; when the moving seat is at the second position, the driving transmission member moves to move the legs to the second transmission position; on the base An abutting portion is formed, and the abutting portion restricts the deployment angle of the legs by restricting the upward sliding of the mobile seat. The beneficial effect of the present application is to provide a folding chair with a safer use process.

Description

hinged folding stand

technical field

The present application relates to the field of outdoor products, in particular to a hinged folding bracket.

Background technique

With the current economic development, in order to meet their spiritual needs, relieve work pressure, and relax, more and more people choose to go out of the house and enjoy outdoor life, such as fishing, outdoor camping, and parties. Therefore, people will choose easy The foldable and portable outdoor table and outdoor chair go out for outdoor life.

The structure of the product can refer to what is disclosed in the Chinese patent document CN114052420A, as shown in Figures 1-9. It is a folding frame. The folding frame 100 includes a base 1, several legs 2 hinged around the base 1, and The outrigger 2 is hinged and the telescopic support rod 3 can be folded relative to the outrigger 2. When in use, the outrigger 2 is opened relative to the base 1 to support the base 1, and the telescopic support rod 3 is opened relative to the outrigger 2 And stretch to achieve support; when it needs to be folded and stored, the telescopic support rod 3 can be retracted to realize the folding function; at the same time, the telescopic support rod 3 is folded relative to the legs 2, and the legs 2 are opposite from bottom to top The base 1 is folded so that the volume of the folded product becomes smaller and it is more convenient to carry, which makes the present invention have strong market competitiveness.

The lock module 4 includes a rod seat 41 installed in the base 1 and movable up and down, a spring 42 sleeved on the periphery of the rod seat 41 and contradicting the base 1, and several hinged joints on the base 1. The locking block 43 inside is movably connected with the upper end of the tie rod seat 41, and the tie bar seat 41 is lifted upwards under the elastic force of the spring 42, so as to drive the end of the locking block 43 into the lock groove 21 at the upper end of the leg 2 , that is to ensure that the outrigger 2 is stably positioned on the periphery of the base 1, so that the outrigger 2 opened relative to the base 1 forms a fixed support; To drive the end of the lock block 43 away from the lock groove 21 on the upper end of the leg 2 to unlock. At this time, the leg 2 can be folded relative to the base 1. The folding frame is very easy to unfold and fold, and it is easy to use. More convenient.

In the above structure, since the outriggers need to be rotated by more than 90 degrees when they are unfolded, they will be locked and fixed by the locking module. In this way, the function of the unlocking module is to place the outriggers for reset, so the plug-in type is adopted. The outrigger is clamped to the column in a way to avoid its reset and provide a stable support. The cost of the locking module is high, which increases the cost of the entire product. And the rotation of the outriggers above 90 degrees requires a lot of room for rotation. Multiple outriggers rotate synchronously through gear connection, so inexperienced people need to hold the outrigger with one hand and hold the base with one hand when using it. , the hand holding the base is easily caught by the telescopic support rod and the outrigger; since the outrigger rotates more than 90 degrees, the user's hand will be easily caught when the outrigger rotates to the specified position, resulting in a sense of experience very bad.

A folding chair with a safer use process is provided.

Contents of the invention

The Summary section of this application serves to introduce concepts in a simplified form that are described in detail in the Detailed Description section that follows. The contents of this application are not intended to identify key features or essential features of the claimed technical solution, nor are they intended to be used to limit the scope of the claimed technical solution.

In order to solve the technical problems mentioned in the background section above, some embodiments of the present application provide a hinged folding stand, including: a base; several legs, arranged around the base and hinged to the base The first hinge point; the telescopic support rod is hinged with the legs and has a state of being expanded and a contracted state relative to the legs; The first moving position and the second moving position; the transmission member is used to form a transmission between the moving seat and the legs so that the legs have at least a first transmission position for expansion and a second transmission position for contraction relative to the base; wherein, When the moving seat is at the first moving position, the driving transmission part moves to move the legs to the first transmission position; when the moving seat is at the second position, the driving transmission part moves to make the legs move to the second transmission position; The abutment part, the abutment part restricts the expansion angle of the outrigger by restricting the upward sliding of the mobile seat.

When in use, firstly unfold the multiple outriggers that are folded together to the surroundings. During the unfolding process, the outriggers will drive the moving seat up through the transmission parts, and the moving seat will move up until the top of the moving seat touches the bottom of the base. It cannot continue to move upwards, the abutting part is the end face part of the bottom of the base, and the outriggers cannot continue to expand, thereby limiting the angle of expansion of the outriggers. At this time, the expansion angle of the outriggers is less than 90 degrees. At the same time, the outriggers can be supported to make the outriggers After the legs are unfolded, the gravity on the base and the telescopic support rod can be supported more stably, and when the outriggers are unfolded, the unfolding angle is small, and the user's hand will not be caught after the unfolding angle is greater than 90 degrees. high security. During the unfolding of the legs, the end of the legs close to the base will not be in contact with the base, thereby avoiding hand pinching when the legs are unfolded.

Further, one end of the transmission member is hinged to the moving seat at the second hinge point and the other end is hinged to the leg at the third hinge point; the first hinge point, the second hinge point and the third hinge point form a triangle.

Further, the hinged folding bracket further includes: a self-locking part connected to the outrigger and the telescopic support rod, so that the telescopic support rod can be locked in position in the unfolded state.

Further, the self-locking part includes: a first self-locking structure formed at one end of the transmission part; a second self-locking structure located on the telescopic support rod and cooperating with the first self-locking structure to lock the position of the telescopic support rod.

Further, the first self-locking structure includes a card slot; the second self-locking structure includes a clip; when the telescopic support rod is in the unfolded state, the clip is inserted into the clip slot so that the telescopic support rod is locked in position relative to the legs.

Further, the second self-locking structure also includes: a guide frame, which is slidably installed in the accommodating cavity and is used for installing the clip, so that the clip can protrude outward and retract inward relative to the telescopic support rod; In the cavity and abutting against the guide frame, the guide frame is subjected to an outwardly protruding force.

Further, the telescopic support rod is formed with a protruding part abutting against the clip.

Further, the base is pierced with a screw; the screw includes: a threaded part and an optical axis; the moving seat is slidably installed on the outer wall of the optical axis; the end of the screw away from the base is installed with a threaded sleeve for limiting the moving seat.

Further, an avoidance groove is provided in the moving seat; the inner wall of the avoiding groove abuts against the outer wall of the threaded sleeve to form a sliding connection; a damper is installed in the avoiding groove so that the moving seat bears force in the axial direction of the screw.

Further, the telescopic support rod includes: an outer tube and an inner tube; the inner tube can slide relative to the outer tube; the end of the outer tube close to the inner tube is provided with a guide rail sleeve; the outer tube is provided with a bayonet at a position close to the inner tube; There is a boss in the inner tube; a spring is arranged on the boss; when the inner tube slides relative to the outer tube, the spring moves the boss and inserts it into the bayonet so that the inner tube and the outer tube are relatively fixed; The bottom end of the inner tube is also provided with a stop plug, the size of which is larger than that of the inner tube so that when the boss is inserted into the bayonet, the inner tube stop plug just abuts against the end of the guide rail sleeve of the outer tube.

The beneficial effect of the present application is that a folding chair with a safer use process is provided.

Description of drawings

The accompanying drawings, which constitute a part of this application, are included to provide a further understanding of the application and make other features, objects and advantages of the application apparent. The drawings and descriptions of the schematic embodiments of the application are used to explain the application, and do not constitute an improper limitation to the application.

In addition, the same or similar reference numerals denote the same or similar elements throughout the drawings. It should be understood that the drawings are schematic and elements and elements have not necessarily been drawn to scale.

In the attached picture:

Fig. 1 is the overall schematic diagram according to the embodiment of the present application;

Fig. 2 is a structural schematic diagram of a part of the embodiment, mainly showing the cross-sectional structure of Fig. 1;

Fig. 3 is an enlarged view of part A of Fig. 2;

Fig. 4 is an enlarged view of part B of Fig. 3;

Fig. 5 is a structural schematic diagram of a part of the embodiment, mainly showing the telescoping support rod structure;

Fig. 6 is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the guide frame and the clip;

Fig. 7 is a structural schematic diagram of a part of the embodiment, mainly showing the internal structure of the telescopic support rod;

Fig. 8 is the structure after the cloth is installed in the present application.

Reference signs:

Base 1, first hinge point 11, second hinge point 12, third hinge point 13;

Outrigger 2, groove 21;

Telescopic support rod 3, telescopic part 31, hinge part 32, accommodating cavity 321, outer tube 33, inner tube 34, guide rail sleeve 35, boss 36, spring leaf 37, stop plug 38;

Mobile seat 4;

transmission part 5;

Contact part 6;

Self-locking part 7, first self-locking structure 71, second self-locking structure 72, card slot 711, card part 721, guide frame 722, elastic part 723, protruding part 724;

screw 8;

Thread sleeve 9;

Damping member 10.

Detailed ways

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these examples are provided so that the understanding of this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for exemplary purposes only, and are not intended to limit the protection scope of the present disclosure.

It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings. In the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

It should be noted that concepts such as "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the sequence of functions performed by these devices, modules or units or interdependence.

It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative and not restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more" multiple".

The present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.

Embodiment one

Referring to FIG. 1 , a hinged folding stand includes: a base 1 . Four outriggers 2 are arranged around the base 1 , and the outriggers 2 are hinged to the base 1 at a first hinge point 11 (refer to FIG. 3 ). A groove 21 is provided in the support leg 2, and a telescopic support rod 3 is arranged in the groove 21, and the telescopic support rod 3 is hinged with the support leg 2. Telescopic support rod 3 can rotate relative to support leg 2 and has the state that relative support leg expands and the state of contraction. The telescopic support rod 3 is completely embedded in the groove 21 when it is in the retracted state.

Referring to Figures 2-3, the hinged folding bracket also includes: a moving seat 4, which is slidably installed on the base 1 so that the moving seat 4 has a first moving position that moves up to the uppermost position and moves down relative to the base 1 to the second lowest move position. The moving base 4 is provided with a transmission part 5, the transmission part 5 is configured as a plate-like structure, and the transmission part 5 is used to form a transmission between the moving base 4 and the legs 2, so that the legs 2 have at least an expanded relative to the base 1. First gear position and retracted second gear position. The transmission member 5 and the moving base 4 form a rotational connection around the movable axis so that when the moving base 4 is in the first moving position, the driving transmission member 5 moves to move the supporting leg 2 to the first transmission position; the moving base 4 is in the second position. position, drive the transmission member 5 to move the leg 2 to the second transmission position; the base 1 is formed with an abutment portion 6, and the abutment portion 6 slides up by restricting the moving seat 4 to limit the deployment angle of the leg 2 . Specifically, one end of the transmission member 5 is hinged with the moving seat 4 at the second hinge point 12 and the other end is hinged with the leg 2 at the third hinge point 13; the first hinge point 11, the second hinge point 12 and the third hinge point 13 form a triangle.

The transmission part is a plate-shaped connecting rod structure, which is respectively connected in rotation with the moving seat and the outrigger. The transmission member is rotatably connected with the moving seat, and the moving seat can move up and down, thereby forming a movable axis.

Embodiment two

On the basis of embodiment one:

The hinged folding bracket also includes: a self-locking part 7, which is connected to the leg 2 and the telescopic support rod 3, so that the telescopic support rod 3 is locked in position in the unfolded state.

Referring to FIGS. 3-4 , the self-locking member 7 includes: a first self-locking structure 71 formed on one end of the transmission member for locking the transmission member relative to the leg 2 . The telescopic support rod 3 includes a telescopic portion 31 and a hinge portion 32 . The telescopic part 31 is a telescopic multi-stage telescopic rod structure. The hinge part 32 is hinged to the leg 2 . An accommodating cavity 321 is defined in the hinge portion 32 , and a second self-locking structure 72 is disposed in the accommodating cavity 321 . The second self-locking structure 72 makes the telescopic support rod 3 lock in position relative to the second self-locking structure 72 and the first self-locking structure 71 . The first self-locking structure 71 includes a locking slot 711 . The second self-locking structure 72 includes a clip 721 , and the clip 721 is inserted into the slot 711 when the telescopic support rod 3 is in the unfolded state to lock the telescopic support rod 3 relative to the leg 2 . One end of the clip 721 located inside the cavity 321 is provided with a guide frame 722 , the guide frame 722 is slidably installed in the cavity 321 and used for installing the clip 721 , and the guide frame 722 is fixedly connected with the clip 721 . An elastic member 723 is disposed in the receiving chamber 321 , and the elastic member 723 is a spring in this embodiment. One end of the elastic member 723 abuts against the guide frame 722 and the other end abuts against the bottom surface of the accommodating chamber 321 . The elastic member 723 makes the clamping member 721 protrude outward and retract inward relative to the telescopic support rod 3 , and makes the guide frame 722 receive an outwardly protruding force. A protruding portion 724 abutting against the clip 721 is formed on the hinge portion 32 , and the protruding portion 724 is used to support the clip 721 to increase the force limit of the clip 721 . Specifically, the portion of the clip 721 abutting against the slot 711 is the force receiving side, and the portion of the clip 721 abutting against the protruding portion 724 is away from the force receiving side. The clip is configured as a rod-shaped structure.

Referring to FIGS. 3-4 , the base 1 is pierced with a screw 8 . The screw rod 8 includes: a threaded part and an optical shaft part, the moving base 4 is slidably mounted on the outer wall of the optical shaft part, and the optical shaft part is slidably mounted on the base 1 . A threaded sleeve 9 is installed on the threaded portion of the screw rod 8 to limit the position of the moving seat 4 . An escape groove 41 is defined in the moving seat 4 , and the inner wall of the escape groove 41 abuts against the outer wall of the threaded sleeve 9 to form a sliding connection. Damper 10 is installed in the escape groove 41, and damper 10 is a spring in the present embodiment, and one end of damper 10 abuts against threaded sleeve 9 and the other end abuts against the top surface of avoidance groove 41 so that mobile seat 4 is in the position of screw rod 8. The axial force is applied upwards, specifically to make the mobile seat be subjected to a downward force.

Referring to Figure 7, the telescopic support rod includes: the telescopic support rod includes: an outer tube and an inner tube; the inner tube can slide relative to the outer tube; the end of the outer tube near the inner tube is provided with a guide rail sleeve, and the outer tube is close to the inner tube There is a bayonet at the position; there is a boss in the inner tube; there is a spring on the boss; the inner tube slides relative to the outer tube to make the boss move. relatively fixed with the outer tube.

Position and support the length of the telescopic tube when it is opened. There is also a stop plug at the bottom of the inner tube. The size of the stop plug is slightly larger than the inner tube. In this way, when the inner tube expands and contracts in the outer tube, it not only acts as a guide rail to assist sliding, It is also possible that when the inner tube is stretched just when the outer tube is bayonet when the spring leaf protruding post is stuck, the inner tube stopper just abuts against the end of the guide rail sleeve of the outer tube, so that when the inner tube is stretched, it is effectively prevented from Possibility of excessive force to disengage the spring tab from the bayonet of the outer tube.

Conditions and gains:

Referring to Figure 2, when you need to use it, you first need to pull out the outrigger 2 to rotate the outrigger 2 relative to the base 1. After rotating a certain angle, the moving seat 4 will touch the contact part 6, and then the moving seat 4 cannot move up, and the moving seat cannot drive the supporting leg 2 to move through the transmission part 5, and then the supporting leg 2 cannot continue to rotate, and at this moment the supporting leg 2 is in an unfolded state.

When the outrigger 2 is opened outward, the transmission member 5 will move, specifically, the third hinge point 13 on the outrigger 2 will move, which will drive the second hinge point 12 to move upward, so that the movement When the seat 4 moves upward, all the second hinge points 12 on the mobile seat 4 will move upward, and then the mobile seat 4 will drive other legs 2 to expand through the transmission part 5, so that all the legs 2 are in the unfolded position. In this state, when the moving seat 4 abuts against the abutting portion 6, all the outriggers 2 will be limited, so that the outriggers 2 cannot continue to be expanded, and they will be supported.

The opening angle of the outrigger 2 in this application is within 90°. The user only needs to hold any outrigger 2 with his hand, then hold the base 1, and then open the outrigger 2 outward. The deployment of multiple supporting legs 2 is realized, and the deployment can be completed quickly in this way. And the angle at which the hands are opened outward is less than 90°, while in the prior art, the legs 2 are generally rotated greater than 90°, and the multiple legs 2 are moved synchronously through gear transmission, so now In some technologies, when inexperienced people accidentally place their hands near the base 1, their hands are easily pinched by the telescopic support rod and the outriggers, and the user experience is not good. There is a pinching phenomenon.

Referring to Figure 3-4, after the outriggers 2 are fully deployed, the telescopic support rods 3 need to be rotated one by one to form a certain angle with the outriggers 2, and then the telescopic part 31 is stretched out to make it reach the a certain length. When the telescopic support rod 3 is expanded outward, the hinge part 32 will also rotate, and the second self-locking structure 72 in the hinge part 32 will also move together, and then the clip 721 will abut against the slot 711, and then the slot 711 will There is a clamping plane for clamping the clamping member 721 , and a guide arc surface is provided on the side of the clamping groove 711 away from the clamping plane. Then during the rotation process, the clip 721 will first abut against the guide arc surface, and then move along the guide arc surface. At this time, the clip 721 will be compressed, that is, the elastic member 723 will be compressed. When the hinge part 32 is unfolded, The clip 721 moves to a position where it abuts against the plane, and then the clip 721 protrudes outward under the action of the elastic part 723 to abut against the abutment plane.

The above descriptions are only some preferred embodiments of the present disclosure and illustrations of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, but also covers the above-mentioned invention without departing from the above-mentioned inventive concept. Other technical solutions formed by any combination of technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with technical features having similar functions disclosed in (but not limited to) the embodiments of the present disclosure.

Claims (10)

1. A hinged folding bracket, comprising: base; a plurality of outriggers are arranged around the base and are all hinged to the base at a first hinge point; The telescopic support rod is hinged to the outrigger and has a state of being expanded and a state of being contracted relative to the outrigger; It is characterized by: The hinged folding bracket also includes: The moving seat is movably installed on the base so that the moving seat has a first moving position and a second moving position relative to the base; The transmission part is used to form a transmission between the moving seat and the leg so that the leg has at least a first transmission position for expansion and a second transmission position for contraction relative to the base; Wherein, when the moving seat is at the first moving position, the driving transmission member moves to move the legs to the first transmission position; when the moving seat is at the second position, the driving transmission member moves to move the legs to the second transmission position; the base An abutting portion is formed on the top, and the abutting portion restricts the deployment angle of the legs by restricting the upward sliding of the mobile seat. 2. The hinged folding bracket according to claim 1, characterized in that: One end of the transmission member is hinged to the moving seat at the second hinge point, and the other end is hinged to the leg at the third hinge point; The first hinge point, the second hinge point and the third hinge point form a triangle. 3. The hinged folding bracket according to claim 1 or 2, characterized in that: The hinged folding bracket also includes: A self-locking member connected to the outrigger and the telescopic support rod to lock the telescopic support rod into position in the unfolded state. 4. The hinged folding bracket according to claim 3, characterized in that: Self-locking parts include: The first self-locking structure is formed at one end of the transmission member; The second self-locking structure is located on the telescopic support rod and cooperates with the first self-locking structure to lock the telescopic support rod. 5. The hinged folding bracket according to claim 4, characterized in that: The first self-locking structure includes a card slot; the second self-locking structure includes a clip; when the telescopic support rod is in an unfolded state, the clip is inserted into the clip slot so that the telescopic support rod is locked in position relative to the legs. 6. The hinged folding bracket according to claim 5, characterized in that: The second self-locking structure also includes: The guide frame is slidably installed in the accommodating cavity and is used for installing the clip, so that the clip extends outward and retracts inward relative to the telescopic support rod; The elastic member is arranged in the accommodation cavity and abuts against the guide frame for making the guide frame receive an outwardly protruding force. 7. The hinged folding bracket according to claim 6, characterized in that: A protruding portion abutting against the clip is formed on the telescopic support rod. 8. The hinged folding bracket according to claim 1, characterized in that: A screw is passed through the base; The screw contains: Thread part and optical axis part; The moving seat is slidably installed on the outer wall of the optical axis; A threaded sleeve is installed on the end of the screw rod far away from the base to limit the movement of the seat. 9. The hinged folding bracket according to claim 8, characterized in that: An avoidance slot is set in the moving seat; The inner wall of the escape groove abuts against the outer wall of the threaded sleeve to form a sliding connection; A damper is installed in the escape groove, so that the moving seat bears force in the axial direction of the screw rod. 10. The hinged folding bracket according to claim 1, characterized in that: The telescopic support rod includes: an outer tube and an inner tube; the inner tube can slide relative to the outer tube; the end of the outer tube close to the inner tube is provided with a guide rail sleeve; the outer tube is provided with a bayonet at a position close to the inner tube; There is a boss; there is a spring on the boss; when the inner tube slides relative to the outer tube, the spring moves the boss and inserts it into the bayonet so that the inner tube and the outer tube are relatively fixed; the bottom of the inner tube There is also a stop plug at the end, the size of the stop plug is larger than that of the inner tube so that when the boss is inserted into the bayonet, the inner tube stop plug just abuts against the end of the guide rail sleeve of the outer tube.

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