CN105916406A - Improved clamps for solar systems - Google Patents

Abstract

A solar power system can include a rail and a solar module disposed on the rail. A clamp assembly can couple the solar module to the rail. The clamp assembly can have a clamped configuration in which the solar module is secured to the rail and an undamped configuration. The clamp assembly can comprise an upper clamp member, a lower clamp member coupled to the rail, and a stabilization member mechanically engaging the upper clamp member and the lower clamp member. The stabilization member can prevent rotation of the lower clamp member relative to the rail when the clamp assembly is in the clamped and undamped configurations. In the undamped configuration, the stabilization member can be biased such that the upper clamp member is disposed at a sufficient clearance above the rail to permit the insertion of the solar module between the upper clamp member and the rail.

Description

Chair

Cross References to Related Applications

This application claims priority to and benefit from US Patent Application Serial No. 14/598,812, filed January 16, 2015, and entitled "Chair." This application also claims priority and benefit to U.S. Provisional Patent Application Serial No. 61/929,042, entitled "Chair," filed January 18, 2014; which U.S. Provisional Patent Application is hereby incorporated by reference in its entirety .

technical field

This application relates generally to furniture, and specifically to chairs.

Background technique

Conventional chairs generally include a seat and a back. The seat and back can be separate structures or can be part of a single structure. Most chairs are used by one person at a time. Chairs typically include legs that support the seat and back above a surface such as the floor.

Chairs can be constructed from a variety of materials such as wood, metal, and molded plastic. Conventional chairs can come in a variety of designs depending on factors such as intended use, ergonomics, and appearance. Additionally, known chairs can have various functional considerations, such as size, weight, durability, portability, and desired sitting position.

The chair may include padding and/or may be constructed of a relatively flexible material such as wicker, which may make the chair more comfortable to use, especially over extended periods of time. Additionally, some chairs may include a contoured seat and/or back to enhance user comfort.

Some known chairs are stackable to form an orderly group, which can be easily transported and stored. Conventional chairs can also be aligned to allow for easier transport and storage of the chair. Chairs that can be stacked with other chairs may be referred to as "stackable chairs" or "stackable chairs" and these types of chairs are found in auditoriums, banquet halls, conference centers, hotels, schools, churches, and other environments where large groups of people meet. Location is frequently used. When seating is required, stackable chairs can be positioned in a variety of configurations and arrangements. When the stackable chairs are no longer required for seating, they can be stacked for easy transport and/or storage.

Since a considerable number of chairs can be required for a party, the space required to store the chairs can be considerable even when the chairs are stacked together. This large storage volume can be especially problematic for businesses or facilities such as hotels, schools and churches. Large storage volumes can also be problematic for manufacturers, wholesalers, retailers, and consumers because a significant number of chairs may have to be stored, shipped, and/or displayed. Additionally, the large amount of space required can also make it difficult to store chairs in homes, apartments, and other types of dwellings.

Folding chairs are also known, and most are lightweight, portable chairs that can be folded into a stowed position. Folding chairs are often used for seating in areas where permanent seating is impossible or impractical. Folding chairs can be used at outdoor or indoor events such as performances, presentations and sporting events. Folding chairs can also be used at home when extra seating is required for gatherings, card games, and impromptu seating for guests.

Conventional folding chairs include folding legs that pivot between a folded or stowed position and an expanded or unfolded position. Unfortunately, some known folding chairs are not very stable, strong, durable or operate well. Additionally, some known folding chairs are difficult to use and can be challenging to secure in the use or stowed position. These problems can be especially difficult with chairs that are lightweight and relatively inexpensive.

Conventional folding chairs may also not be able to support significant amounts of weight or force. Furthermore, the manufacture and assembly of conventional folding chairs can be quite time consuming. For example, known folding chairs can include multiple discrete parts that must be carefully assembled, which can disadvantageously increase the time required to manufacture the chair.

Folding chairs are usually stored in a stack or in a row in the stowed position. While conventional folding chairs can save a significant amount of space by allowing the folding chairs to be placed in a stack or in a row, these chairs may still require a considerable amount of space even in the stowed position. This may make it difficult, inconvenient, or impossible to store multiple chairs in an area of a certain size.

Contents of the invention

There is therefore a need for a chair that eliminates the above disadvantages and problems.

One aspect is a chair that may include a seat and a back or backrest. The frame connects the seat and backrest. The frame may include one or more legs which may support the seat and back at a desired height or distance from a surface such as the floor. The legs can be attached to the seat and back if desired. The frame, seat, back and/or legs may be connected by one or more fasteners. The frame, seat, back and/or legs may also be connected by friction, interference or snap fit connections or other suitable means.

Another aspect is a chair, which can be formed at least partially from plastic. For example, the seat and/or back may be constructed of plastic, such as blow molded or injection molded plastic. The seat and back may be separate components or integrally formed as part of a unitary one-piece structure. Significantly, a chair comprising one or more components constructed of plastic can be manufactured quickly and efficiently. Constructing chairs from plastic can also be formed into many different desired shapes and sizes. Advantageously, a chair comprising one or more components constructed of plastic would be durable, lightweight, easy to manufacture and strong. It should be understood that any suitable portion of the chair may be constructed from plastic, and that all or a portion of the chair may be constructed from other materials having suitable properties and characteristics.

Yet another aspect is a chair that can be lightweight and easily portable. Advantageously, this may allow the chair to be used in a wide variety of situations and environments. This can also increase the potential use of the chair and allow the chair to be used for many different purposes. Furthermore, if the chair is lightweight, the chair can be moved from one location to another quickly and easily. In addition, chairs can be moved more easily as part of a group. Furthermore, the lightweight chair can be easily stacked and stored.

Yet another aspect is a chair that may include a frame supporting a seat and a backrest. The frame can be constructed from a relatively strong material such as metal. In particular, the frame may be constructed of steel, but other materials with suitable properties and properties may also be used.

A further aspect is a folding chair movable between a folded or stowed position and an unfolded or use position. A folding chair may include pivotally connected legs. For example, a chair may include front and rear legs, and the legs may be pivotably connected at least near the midpoints of the legs. Specifically, the right front leg is pivotally connected to the right rear leg, and the left front leg is pivotally connected to the left rear leg. The front legs are connectable to the seat in a fixed position. Specifically, the front leg may be pivotally connected to the seat in a fixed position. The rear legs may be movable, such as slidable, relative to the seat. For example, the rear leg is slidable relative to the seat between a first position and a second position. Pivotably connecting the front legs to the seat in a fixed position and slidably connecting the rear legs to the seat may allow the legs to move between a folded position and an unfolded position. If desired, the upper portion of the rear leg may be connected to a cross member such as a cross tube, and the upper portion of the rear leg and/or the cross tube may move or slide between the first position and the second position. Movement of the upper portion of the rear leg and/or the cross tube may be controlled at least in part by a guide, such as a groove or channel, to facilitate movement between the first position and the second position. Movement of the upper portion of the rear leg and/or said cross tube may be controlled at least in part by one or more stops that may limit movement of the leg.

Another further aspect is a folding chair that may include a leg that moves between a first position and a second position. Advantageously, the legs may be arranged in a generally triangular configuration when the legs are in the use position, which may contribute to a strong and stable chair. For example a chair may include front legs attached to the seat in a fixed position, and the rear legs may be movable or slideable relative to the seat. When the rear leg is disposed in the use position, the leg may engage or contact the detent, which may assist in securing the rear leg in the fixed position. Specifically, an upper portion of the rear leg, which may include a cross member or tube, may engage or contact a stop that may prevent further movement of the leg. For example a stop may prevent further movement of the cross member towards the front of the chair. The stop may include a bracket, a portion of the frame, a portion of the seat, and the like. The stop may be constructed of a durable wear resistant material such as metal, steel or the like. If the chair legs and stops are constructed of metal, this can help create a strong, generally triangular frame that can support significant loads or forces. A generally triangular frame of metal with metal stops for securing the frame in the use position can also form a chair capable of supporting a significant amount of weight.

Yet another further aspect is a folding chair that can be locked into place. For example, the chair can be locked in the use position. In more detail, the chair may include one or more legs, such as a pair of rear legs, and the cross member may be attached to an upper portion of the rear legs. The upper portions of the legs and/or the cross member move or slide relative to the seat. For example, a chair may include a seat and a bracket may be attached to the seat. The seat and/or bracket may form at least part of a guide, such as a groove or channel, and the upper portion of the leg and/or the cross member may be at least partly disposed within or the movement may be at least partly performed by the guide control. The stops may be used to secure the legs in a fixed position, such as when the legs are in an unfolded or use position. In particular, further movement of the rear leg may be prevented when the upper portion of the rear leg and/or the cross member contacts or engages the stop. Additionally, the upper portion of the rear leg and/or the cross member may include one or more engaging portions that may be disposed within the one or more receiving portions to facilitate securing the rear leg in a fixed position. Down. As an example, one or both ends of the cross member may be bent or angled to form an engagement portion, and the engagement portion may be disposed within the receiving portion when the chair leg is in a desired position. Advantageously, the rear leg can be arranged in a fixed position when the upper part of the rear leg and/or the cross member engagement stop and/or the engagement portion is arranged in the receiving portion. Advantageously, this locks the rear chair legs in place and the chair can be set in a very firm and stable position. If desired, the guides may help to control movement of the chair legs between a first position and a second position, such as movement between folded and unfolded positions. Furthermore, guides may be provided at least near each side of the seat, and the guides may be formed by the seat and/or the bracket. Those of ordinary skill in the art will understand, after reviewing the disclosure of this disclosure, that the guide may be formed by a chair, bracket, or other suitable structure. Those of ordinary skill in the art will also understand, after reviewing this disclosure, that the guides may have other suitable shapes, sizes, configurations and arrangements, depending, for example, on the intended use of the chair.

Yet another aspect is a chair that may include a backrest or a backrest attached to a frame. The backrest and frame may include one or more locking, engaging and/or receiving portions which may be sized and configured to contact, abut, engage and/or interlock with each other in order to connect the backrests to the frame. The locking, engaging and/or receiving portions may be sized and configured to connect the backrest to the frame using friction, interference and/or snap fit.

In yet another further aspect is a chair that may include a frame having one or more receiving portions sized and configured to receive and/or retain a portion of the backrest. one or more sections. A receiving portion, which may include one or more slots, channels, grooves, etc., may extend from the open upper portion of the frame and along the length of the frame. Specifically, the frame may include an open upper end, and the receiving portion may be connected to the open end such that at least a portion of the open end and the receiving portion are aligned. The receiving portion may include one or more protrusions, engaging portions, locking cogs, teeth, etc., which may be referred to as a locking portion of the frame, and the locking portion of the frame may be sized and configured to contact and/or Engage the corresponding part of the backrest. For example, the backrest may include one or more protrusions, engagement portions, locking gears, teeth, etc., which may be referred to as the locking portion of the backrest, which may be sized and configured to contact and/or engage the locking portion of the frame. part. Accordingly, the backrest may include one or more locking portions that may be sized and configured to at least partially contact and/or engage the one or more locking portions of the frame. The locking portion of the frame and/or backrest may have angled or curved surfaces that may be sized and configured to facilitate contact and/or engagement. The locking portion of the frame and/or backrest may be sized and configured to allow the backrest to be attached to the frame by a snap, friction and/or interference fit. It will be understood by those of ordinary skill in the art, after reviewing this disclosure, that the frame and backrest may be connected in any suitable manner. Those of ordinary skill in the art will also understand, after reviewing this disclosure, that the frame and backrest may include other structures sized and configured to contact, abut and/or engage, which may facilitate a secure connection. Backrest and frame.

Another aspect is a chair that may include a backrest that is fixed or locked in a fixed position when the backrest is attached to the frame. For example, the backrest may include one or more locking portions, such as gears, tabs, ramps, buttons, protrusions, and the like. These locking portions of the backrest may be sized and configured to deform or deflect when the backrest is attached to the frame. Once the backrest is attached to the frame, the locking portion can be at least partially resiliently returned to its original configuration to help maintain the backrest in a desired position. This may advantageously allow fast and easy fixing of the backrest in the desired position relative to the frame.

Still another aspect is a chair that can include a frame having one or more locking portions that can be sized and configured to allow a backrest to be securely attached to the frame without the use of fastening parts, adhesives, etc. For example, the backrest may include one or more locking portions disposed adjacent at least a side of the backrest; and the frame may include one or more locking portions disposed adjacent an upper portion of the frame. The locking portion of the frame and/or backrest can be positioned, angled and/or sized to allow the backrest to be securely attached to the frame. For example, one or more locking portions may include a narrowed or tapered portion to help secure the backrest in a fixed position. The locking portion may also include other features, such as inwardly and/or outwardly extending protrusions, dovetails, teeth, etc., which may help securely attach the backrest and frame.

Yet another aspect is a chair that may include a frame and a backrest having one or more locking portions. For example, the frame may include two leg assemblies, and the receiving portion may be provided in an upper portion of each leg assembly. The receiving portion may include one or more locking portions. The backrest may also include one or more locking portions sized and configured to at least partially contact and/or engage corresponding locking portions of the frame. Advantageously, one or more locking portions may allow the backrest and frame to be securely connected. While one or more locking portions may allow the backrest and frame to be securely connected without the use of fasteners, adhesives, etc., it should be understood that fasteners, adhesives, etc. could be used if desired.

Still another aspect is the method of attaching the backrest to the frame. The method may include inserting a portion of the backrest, such as an engagement portion, into an opening in an end of the frame. The engagement portion may be connected to the backrest by a connection portion, and the connection portion may be disposed within a receiving portion extending along the length of the frame. The connecting portion and the receiving portion may include corresponding locking portions sized and configured to securely connect the backrest to the frame. The method may further include attaching the backrest to the frame by a snap, friction and/or interference fit. If the backrest is constructed of plastic, such as blow molded plastic, the engaging portion of the backrest may be integrally formed with said backrest as part of a unitary one-piece structure. Advantageously, the locking portion of the backrest may also be integrally formed with said backrest as part of an integral one-piece construction.

A further aspect is a folding chair that may include a leg movable between a first position and a second position. For example, a folding chair may include legs, and a cross member or tube may be connected to an upper portion of the legs. The cross tube may be movable or slidable relative to the seat, and one or more stops may be used to control movement of the legs. Specifically, the cross tube can slide relative to the seat, and the guides can help control the movement of the cross tube. A stop may be used to prevent further movement of the cross tube relative to the guide. The stop may be at least partially formed by one or more flanges. For example, the stop may include a first flange and a second flange, the first flange is sized and configured to contact and/or engage the cross tube, and the second flange may provide the stop with increased strength, rigidity and hardness. The second flange may be provided at least partially within a portion of said seat, such as an undercut arranged in a lower portion of the seat. Advantageously, the one or more flanges can help form a strong, durable, impact-resistant stop. The stop may form part of a bracket attached to said seat, and the bracket may form at least part of the guide. But the stop may be a separate component attached to or formed from other suitable parts of the chair. The stop may advantageously secure the chair in a fixed position, such as a use position.

Another aspect is a folding chair that is movable between a folded or stowed position and an unfolded or use position. A folding chair may include a seat; a backrest; a frame connected to the seat and the backrest, the frame including a right front leg, a left front leg, a right rear leg, and a left rear leg; a first side connected to the seat a first bracket connected to the second side of the seat; a first guide disposed at least adjacent to a lower surface of the seat, at least a portion of the first guide being formed by the first bracket a second guide disposed adjacent to at least the lower surface of the seat, at least a portion of the second guide being formed by a second bracket; and a cross member connected to an upper portion of the right rear leg and an upper portion of the left rear leg part. The cross member is slidable relative to the lower portion of the seat, the cross member is slidable within the first guide and the second guide, and when the chair is moved between the folded position and the unfolded position, The cross member is slidable relative to the lower portion of the seat and the first and second guides. A first engagement member may be disposed at a first end of the cross member, and a second engagement member may be disposed at a second end of the cross member, the first engagement member may be disposed at least partially within the first guide, and The second engagement member may be at least partially disposed within the second guide. The cross member slides between a first position and a second position relative to the lower portion of the seat and the first and second guides when the chair is moved between the folded and unfolded positions.

If desired, a first portion of the first guide may be formed by a portion of the seat; a second portion of said first guide may be formed by a portion of the first bracket; a first portion of the second guide may be formed by a portion of the seat ; and the second portion of the second guide may be formed by a portion of the second bracket. Additionally, a portion of the cross member may contact a portion of the lower portion of the seat when the chair is moved between the folded position and the unfolded position. Additionally, a right front leg and a right rear leg are pivotally connected to form a first leg assembly; and a left front leg and a left rear foot are pivotally connected to form a second leg assembly. When the chair is in the deployed position, the lower portion of the right front leg and the lower portion of the right rear leg may form two sides of an approximately equilateral triangle; and, when the chair is in the deployed position, the upper portion of the right front leg and The upper portion of the right rear leg may form two sides of a substantially equilateral triangle. In addition, the lower surface of the first end of the cross member may contact the surface of the first guide; the lower surface of the second end of the cross member may contact the surface of the second guide; the first end of the cross member may contact the surface of the second guide; The upper surface may contact the lower surface of the seat; and the upper surface of the second end of the cross member may contact the lower portion of the seat.

Yet another aspect is a folding chair that may include a backrest, a seat, and a frame connected to the backrest and the seat. The frame may include a first leg assembly having a front leg and a rear leg, and the second leg assembly may include a front leg and a rear leg. The cross member may connect the rear leg of the first leg assembly and the rear leg of the second leg assembly, and the guide may connect to the seat. The guides may be sized and configured to guide the cross member when the chair is moved between the folded and unfolded positions. The chair may also include a recess defined at least in part by a portion of the guide and a portion of the seat. The chair may also include a stop that holds the chair in the deployed position when the stop contacts the cross member. The stop may be part of the guide, and the stop may include a first flange sized and configured to contact the cross member. If desired, the seat may form at least part of the guide. Furthermore, a portion of the cross member may be angled so as to form an engagement member, and the engagement member may be disposed within the receiving portion of the guide.

Still another aspect is a folding chair that may include a backrest, a seat, and a frame sized and configured to support the backrest and seat. The frame may include a first leg assembly having a front leg and a rear leg, and a second leg assembly having a front leg and a rear leg. The cross member may connect the rear leg of the first leg assembly and the rear leg of the second leg assembly; the guide may be sized and configured to guide the cross member when the chair is moved between the folded position and the unfolded position and a stop may be sized and configured to contact the cross member when the chair is in the deployed position, the stop preventing further movement of the cross member toward the front of the chair. The guide may comprise a groove, and the stop may comprise a flange disposed generally perpendicular to the length of the cross member. Furthermore, the seat and the bracket form at least part of the guide. Furthermore, the lower surface of the cross member may contact the surface of the guide, and the upper surface of the cross member may contact the lower surface of the seat.

These and other aspects, features and advantages of the present invention will become more apparent from the following brief description of the drawings, the drawings, detailed description of the preferred embodiments, and appended claims.

Description of drawings

The drawings include drawings of preferred embodiments to further illustrate and clarify the above and other aspects, advantages and features of the invention. It should be understood that the drawings depict only preferred embodiments of the invention and are not intended to limit its scope. Furthermore, it should be understood that while the drawings may illustrate dimensions, proportions, relationships and configurations of the preferred invention, the drawings are not intended to limit the scope of the claimed invention. The invention will be described and explained with additional character and detail by use of the accompanying drawings, in which:

Figure 1 is an upper perspective view of an exemplary chair, showing the chair in a use position;

Figure 2 is a lower perspective view of the chair shown in Figure 1;

Fig. 3 is the front view of the chair shown in Fig. 1;

Fig. 4 is the rear view of the chair shown in Fig. 1;

Fig. 5 is the left side view of chair shown in Fig. 1;

Fig. 6 is the right side view of the chair shown in Fig. 1;

Fig. 7 is a top view of the chair shown in Fig. 1;

Fig. 8 is the bottom view of the chair shown in Fig. 1;

Figure 9 is a lower perspective view of the chair shown in Figure 1, showing the legs in a partially closed position;

Figure 10 is another lower perspective view of the chair shown in Figure 1, showing the legs in another partially closed position;

Figure 11 is an enlarged view of a portion of the chair shown in Figure 9 along line 11-11;

Figure 12 is an enlarged view of a portion of the chair shown in Figure 10 along line 12-12;

Figure 13 is a perspective view of an exemplary cross member;

Figure 14 is a perspective view of an exemplary bracket;

Figure 15 is a cross-sectional side view of a portion of the chair shown in Figure 1, showing the legs and cross member in one position;

Figure 16 is a cross-sectional side view of a portion of the chair shown in Figure 15, showing the legs and cross member in another position;

Figure 17 is a lower perspective view of an exemplary seat;

18 is a cross-sectional side view of another exemplary chair showing guides and stops;

Fig. 19 is a cross-sectional side view of the chair shown in Fig. 18, showing cross members and guides;

Figure 20 is a lower perspective view of a portion of the chair shown in Figure 18;

Figure 21 is an upper perspective view of a portion of the chair shown in Figure 20;

22 is an upper perspective view of a portion of another exemplary chair, showing the backrest and frame;

Figure 23 is an enlarged upper perspective view of a portion of the chair shown in Figure 22;

Figure 24 is another enlarged upper perspective view of a portion of the chair shown in Figure 22;

Figure 25 is an enlarged side view of a portion of the chair shown in Figure 22;

FIG. 26 is a partially cutaway upper perspective view of a portion of chair 22 showing the backrest attached to the frame; and

Figure 27 is an enlarged partial cutaway side view of a portion of the chair shown in Figure 22, showing the backrest attached to the frame.

detailed description

The present invention generally relates to chairs. But the principles of the invention are not limited to chairs. It should be understood that the chairs disclosed herein can have a variety of shapes, sizes, configurations and arrangements in light of the present disclosure. It should also be understood that the chair can include any suitable number, combination, etc. of features, components, aspects, and the like. In addition, although the chairs shown in the figures are shown as having a particular style, it should be understood that the chair may have any suitable style or configuration. Additionally, the stackable frame structures disclosed herein can be successfully used in conjunction with other types of objects and devices.

Additionally, to assist in describing the various exemplary embodiments of chairs, words such as top, bottom, front, back, side, right, and left are used to describe the drawings, which may, but are not necessarily, be drawn to scale. . It will be further appreciated that the chair can be provided in various desired positions or orientations and used in many positions, environments, and arrangements. Exemplary embodiments of the chair will now be described in detail as follows.

FIG. 1 illustrates an exemplary chair 10 in an in-use position according to one or more embodiments of the present invention. As shown in FIG. 1 , an exemplary embodiment of a chair 10 may include a seat 12 having an upper surface or portion and a lower surface or portion. Chair 10 may also include a seat back or backrest 14, which may have a front surface or portion and a rear surface or portion. Frame 16 may be used to support seat 12 and back 14 in a desired position. For example, frame 16 may include right and left portions that are connected to seat 12 and back 14 . Frame 16 may also include or be attached to one or more supports or legs 18 that may be used to support chair 10 above a surface such as a floor or ground. As shown in FIG. 1 , an exemplary embodiment of a chair may include a right front leg 18a, a left front leg 18b, a right rear leg 18c, and a left rear leg 18d. Frame 16 may include two leg assemblies. For example, a first leg assembly may include a right front leg 18a and a right rear leg 18c, and a second leg assembly may include a left front leg 18b and a left rear leg 18d. After reviewing this disclosure, it should be appreciated that the chair 10 may include any suitable number and configuration of legs 18, depending, for example, on the intended use and/or design of the chair.

A bracket 20 may be attached to the seat 12, and one or more legs may be attached to the bracket. For example, the front legs 18a, 18b may be attached to the rear portion of the bracket 20 . Specifically, the front legs 18 a , 18 b are pivotally attached to the rear portion of the bracket 20 , which may allow the legs to be pivotally attached to the rear portion of the seat 12 . The bracket 20 may also facilitate connecting the rear legs 18c, 18d to the seat 12, as discussed in more detail below. Those of ordinary skill in the art will understand after reviewing this disclosure that the chair legs 18a, 18b, 18c, 18d may also be attached directly to the seat 12 or other suitable portion of the chair 10, depending on the intended use of the chair, for example. .

The chair 10 may be sized and configured to be used by a single person, but the chair may also be sized and configured to allow two or more people to sit in the chair at the same time. It should be appreciated that chair 10 may have a variety of suitable shapes, sizes and configurations depending, for example, on the intended use of the chair. For example, chair 10 may be larger or smaller, and it may have other suitable designs, eg, depending on its intended appearance, aesthetics, and the like.

At least a portion of chair 10 may be constructed of plastic, and in particular blow molded plastic. For example, seat 12 and/or back 14 of chair 10 may be constructed of blow molded plastic. Those of ordinary skill in the art will appreciate in view of this disclosure that any suitable portion of chair 10 may be constructed of plastic, and, for example, the entire chair may be constructed of plastic. Furthermore, those of ordinary skill in the art will appreciate that the seat 12 and back 14 may be part of an integral, one-piece construction. Thus, for example, the seat 12 and back 14 could be constructed of blow molded plastic, and the seat and back could be integrally formed as part of an integral, one-piece structure.

In more detail, the seat 12 and back 14 may be constructed of plastic that is blow molded into the desired shape and configuration. Advantageously, the blow molded plastic seat 12 and back 14 may allow a strong, durable and/or lightweight chair 10 to be manufactured quickly and efficiently. It should be understood that other suitable materials and processes may be used to construct chair 10 . For example, the seat 12 and/or back 14 may also be constructed from wood, metal, or the like. Additionally, the seat 12 and back 14 may be formed by other suitable methods or processes such as injection molding, extrusion molding, vacuum forming, tumbling, and the like. It should also be understood that the seat 12 and back 14 are not required to be manufactured by the same process. For example, the backrest 14 may be constructed of blow molded plastic and the seat 12 may be formed of vacuum or injection molded plastic.

The chair legs 18 and the bracket 20 may, for example, be constructed of a strong and durable material such as metal, especially steel. If the legs 18 and brackets 20 are constructed of steel, this can help create a strong and stable chair 10 capable of supporting a significant amount of weight.

The seat frame 16 is desirably constructed of a relatively strong and stable material such as metal, especially steel. In particular, frame 16 may be constructed from a hollow metal tube or conduit that is bent or formed into a desired shape and configuration. Frame 16 may have a generally circular, square, rectangular, oval, or other suitable cross-sectional configuration. Advantageously, the metal frame 16 may allow for a strong, stable and/or lightweight chair 10 to be constructed. Frame 16 may also be constructed of other materials having suitable properties, and the frame may have other suitable shapes and configurations. Specifically, the size and shape of frame 16 may depend, for example, on the intended use of chair 10 . It should be understood that the chair 10 could also be constructed without the frame 16, if desired.

As shown in FIG. 2 , a cross member 22 , such as a cross tube or rod, may be attached to an upper portion of the chair leg 18 . Specifically, the cross member 22 may be attached to an upper portion of the right rear leg 18c and an upper portion of the left rear leg 18d, for example. The cross member 22 may also be constructed of a relatively strong and stable material such as metal, especially steel. The cross member 22 may be securely connected in a fixed position to the upper portions of the rear legs 18c, 18d by welding, fusing, bonding, or the like.

The legs 18 of the chair 10 are pivotally connected, and the pivot point may be located at least adjacent to the midpoint of the rear legs 18c, 18d. In more detail, the chair may include a pair of front legs 18 and a pair of rear legs. The pair of front legs 18 may include a right front leg 18a and a left front leg 18b. The pair of rear legs 18 may include a right rear leg 18c and a left rear leg 18d. The front legs 18a, 18b may be pivotally connected to the rear legs 18c, 18d, respectively, by one or more fasteners, pins, or the like. Additionally, as noted above, the front leg 18 may be fixed in a fixed position relative to the seat 12 . For example, the front legs 18a, 18b may be connected to the rear portion of the seat 12 by the bracket 20 and the front legs may pivot relative to the seat 12 .

Advantageously, when the chair 10 is in the use position, the legs 18 and the seat 12 can have a generally triangular configuration and this can help form a strong and stable chair capable of supporting a significant amount of weight. For example, the front legs 18a, 18b and the rear legs 18c, 18d may have approximately equal distances from the lower portions or ends of the legs to the pivot point connecting the front and rear legs, such as about fourteen ( 14) inches. The distance separating the lower portions or ends of the front legs 18a, 18b from the lower portions of the rear legs 18c, 18d, respectively, may be approximately equal to the distance from the lower portion of the legs to the pivot point when the chair 10 is in the in-use position. distance, such as about fourteen (14) inches. Thus, when the chair 10 is in the use position, the lower portions of the legs 18 may be arranged in at least a generally equilateral triangular configuration. Similarly, the upper portions of the legs 18 may also be arranged in at least a generally equilateral configuration when the chair 10 is in the use position. For example, the distance from the pivot point to the seat 12 may be approximately the same for the upper portions of the front legs 18a, 18b and the rear legs 18c, 18d, such as about six (6) inches. The distance separating the upper portions of the front legs 18a, 18b and the upper portions of the rear legs 18c, 18d attached to the bracket 20 or seat 12, respectively, may be approximately equal to the distance from the pivot point to the upper portion of the legs. A distance, such as about six (6) inches. Accordingly, the upper portions of the legs 18 may be arranged in at least a generally equilateral triangular configuration when the chair 10 is in the use position.

Importantly, if the upper portions of the legs 18 and the lower portions of the legs are arranged in a generally equilateral triangular configuration, a strong and stable chair 10 can be formed. In particular, an equilateral triangle can help form a chair 10 that is balanced and can support approximately equal amounts of weight on different portions of the seat 12 . An equilateral triangle can also create an aesthetically pleasing design, and the upper and lower portions of the legs 18 supporting the seat 12 can be generally symmetrical. It should be understood that the legs 18 may have other suitable shapes, sizes, configurations and arrangements, including longer or shorter lengths, depending, for example, on the intended use of the chair 10 after review of this disclosure.

As seen in FIGS. 9 and 10 , the upper portions of the rear legs 18c, 18d and the cross member 22 are movable relative to the seat 12 . Specifically, the upper portions of the rear legs 18c, 18d and the cross member 22 are slidable relative to the lower portion of the seat 12 . For example, the upper portions of the rear legs 18c, 18d and the cross member 22 are slidable between a first position in which the chair 10 is disposed in the open or in-use position and a second position in which the chair 10 is disposed in the open or use position. Down, the chair is set in the folded or stowed position. As described in more detail below, movement of the upper portions of the rear legs 18c, 18d and the cross member 22 may be controlled so that the legs are secured, held and/or locked in place. For example, the upper portions of the rear chair legs 18c, 18d and the cross member 22 may be secured, held and/or locked in place when the chair is in the open and/or closed positions.

As shown in FIG. 11 , the ends of the cross members 22 may be disposed within slots or guides 24 such as grooves or channels. The cross member 22 is slidable within a guide 24 , and the guide may be formed by at least a portion of the bracket 20 and/or seat 12 . Movement of the cross member 22 is at least partially controlled by guides 24 as the chair 10 is folded and unfolded. If desired, one or both ends of the cross member 22 may form at least part of the engagement member 26 and the engagement member may be at least partially disposed within the guide 24 . For example, the ends of the cross member 22 may be generally straight and aligned with the main body of the cross member. Accordingly, the engagement member 26 may be formed from opposite ends of the cross member 22 . In another exemplary embodiment, the ends of the cross member 22 may be angled or bent to form the joint member 26 . For example, the opposite ends of the cross member 22 may be disposed at an angle of about 5°, about 10°, or about 15° from perpendicular to the main body of the cross member. It should be appreciated that the engagement members 26 may be disposed at any suitable angle, and that the engagement portions may have other suitable shapes, sizes, configurations, and arrangements. Furthermore, while the chair 10 is shown as including two joint members 26, it should be understood that the chair may include one or more joint members.

The bracket 20 may also include one or more stops 28 and the stops may control movement of the legs 18 and/or the cross member 22 relative to the seat 12 . For example, the one or more detents 28 may engage or contact the cross member 22 and/or the engagement member 26 when the chair 10 is in a particular configuration. Specifically, when the chair 10 is in the use position, the cross member 22 and/or the engagement member 26 may engage or contact one or more stops 28, which may prevent movement of the cross member while the chair is in use. Cross member 22 and/or engagement member 26 may also engage or contact one or more detents 28 when the chair is in the collapsed or stowed position, which may facilitate storage and/or stacking of the chair.

For example, as shown in FIG. 14 , the stop 28 may be part of the bracket 20 and the stop may help control movement of the cross member 22 relative to the seat 12 . The stop 28 may be formed from one or more flanges 30 or angled portions of the bracket 20 . Specifically, the stopper 28 may be formed by a first flange 30a and a second flange 30b. The first flange 30a and the second flange 30b may increase the rigidity and rigidity of the stopper and/or the bracket 20 . In further detail, the first flange 30 a may be disposed at right angles or substantially perpendicularly to a part of the bracket 20 . In particular, the first flange 30a may be angled relative to the lower portion of the bracket 20 , and the lower portion of the bracket may form at least part of the guide 24 . The first flange 30a may also extend substantially along the length of the cross member 22, for example. The first flange 30a may also be disposed generally parallel to the main body of the bracket 20 . The stop 28 may include a second flange 30b, and the second flange may increase the hardness and rigidity of the stop. The second flange 30b may be disposed at an angle, such as a right angle, relative to the first flange 30a. The first flange 30a and the second flange 30b may be integrally formed as part of a unitary one-piece structure. The first and second flanges 30a, 30b may also be separate structures, if desired. The second flange 30b may be disposed at least partially within the opening or receiving portion of the seat 12, such as an undercut or other suitable type of structure. Advantageously, this may help secure the bracket 20 to the seat 12 and/or help prevent movement of the bracket relative to the seat.

When the chair 10 is in the use position, a portion of the cross member 22, such as the engagement portion 26, may contact and/or engage one or more of the detents 28 to help maintain the chair in a fixed position. For example, the cross member 22 or the engagement portion 26 may contact or engage the first flange 30a and/or the second flange 30b. Thus, the stops 28 can limit or prevent further movement of the cross member 22, and this can help secure the chair 10 in the use position since the legs 18 cannot move relative to the chair. In more detail, the stop 28 may prevent further movement of the cross member 22 in the first direction, but may allow movement of the cross member in the second direction. This may allow the stop 28 to prevent movement of the cross member 22 in the first direction, which may result in a strong and stable chair 10 in the use position, and may allow movement of the cross member in the second direction. , which allows the chair to be folded or closed quickly and efficiently.

Bracket 20 may also include other features or structures, such as one or more flanges that may extend along at least a majority, or at least substantially the entire length, of the bracket. For example, the first flange 32 may extend along all or a portion of the bracket 20 . The first flange 32 forms part of the guide 24 and the flange may add rigidity and rigidity to the bracket 20 and/or the guide. A portion of the first flange 32 may be curved, angled, or curved, and the portion of the first flange may be sized and configured to allow the cross member 22 and/or the engaging member 26 to move relative to the bracket. 20 or the flange moves. Furthermore, the bracket 20 may include a second flange 33 and the second flange may extend along at least a majority, or at least substantially the entire length of the bracket. The second flange 33 may form part of the guide 24 and the flange may increase the stiffness and rigidity of the bracket 20 and/or the guide. A portion of the second flange 33 may be curved, angled, or curved, and a portion of the second flange may be sized and configured to allow the cross member 22 and/or the engaging member 26 to move relative to the bracket. 20 or the flange moves.

The first flange 32 and the second flange 33 may be sized and configured to facilitate attachment of the bracket 20 of the seat 12 . The first flange 32 and the second flange 33 may also be sized and configured to define a portion of the guide 24 and/or contact a portion of the seat 12 . Additionally, the bracket 20 may facilitate attachment of the chair leg 18 to the seat 12 . For example, bracket 20 may include openings, holes or apertures sized and configured to allow front leg 18 to be secured in a fixed position relative to seat seat 12 using screws, bolts, fasteners, etc. Down. This may allow the front legs 18a, 18b to be pivotally connected to the seat 12 and/or bracket 20 .

As shown in FIG. 18 , the guide 24 may be formed by the seat 12 and/or the bracket 20 . In particular, a lower portion of the bracket 20 , such as the second flange 32 , may form at least a portion of the guide 24 . Seat 12 may also form part of guide 24 . For example, the second flange 32 may form a lower part of the guide 24 and a part of the seat 12 may form an upper part of said guide. As shown in the figures, the stop 28 may be at least partially formed by said first flange 30a and said second flange 30b.

FIG. 19 shows a portion of the cross member 22 disposed in the guide 24 . In particular, an engagement member 26 , which may be a curved or angled portion of the cross member 22 , may be disposed within the guide 24 . When the engagement member 26 is disposed within the receiving portion of the guide 24, movement and positioning of the cross member 22 may be controlled. Furthermore, this may help to control the movement of the legs, particularly the movement of the rear legs 18c, 18d. Furthermore, when the engagement member 26 is disposed within the receiving portion of the guide, this can help secure the chair leg 18 in a fixed position. Specifically, when the upper portion of the leg 18 and/or the cross member 22 engages the detent 28, the rear leg 18c, 18d may be disposed in a fixed position. When the upper portion of the leg 18 , the cross member 22 or the engagement member 26 engages the stop 28 , further movement of the cross member toward the front of the chair 10 is prevented.

As shown in FIG. 20 , the stop 28 may be formed from a portion of the bracket 20 . Additionally, the guide 24 may be formed from a portion of the bracket 20 . Figure 20 also shows that the cross member 22 may be connected to the upper portion of the rear legs 18c, 18d.

22-27 illustrate an exemplary embodiment of the backrest 14 attached to the chair 10. As shown in FIG. Specifically, FIGS. 22-27 illustrate the attachment of the backrest 14 to the frame 16 . It should be appreciated that the backrest 14 may be attached to the frame 16 in one or more suitable manners. For example, as shown in FIGS. 22 and 23 , each side of the backrest 14 may include an engagement portion 34 , and the engagement portion may have substantially the same cross-sectional configuration as the upper portion of the frame 16 . For example, the engagement portion 34 of the backrest 14 may have a generally circular cross-sectional configuration, and the upper portion of the frame 16 may have a corresponding generally circular cross-sectional configuration, which may allow the engagement portion of the backrest 14 to be inserted into the opening of the frame 16. end inside. This may allow the engagement portion 34 to be at least partially disposed within the frame 16 . The joint portion 34 may be connected to the backrest 14 by an attachment structure, and the joint portion 34, the attachment structure, and the backrest 14 may be integrally formed as part of an integral one-piece structure.

The upper portion of the frame 16 may include an opening 36, and the receiving portion may be connected to the opening. The receiving portion may extend along a portion of the frame 16 . For example, the receiving portion may extend along the length of the frame 16 . The receiving portion may include one or more frame locking portions 38, such as locking gears, shoulders, protrusions, protrusions, engagement members, and the like. The frame locking portion 38 may include one or more angled surfaces and/or engagement or contact surfaces. For example, the frame locking portion 38 may include a first surface disposed at a first angle, such as about 10°, 15°, 20°, 25°, 30°, 35°, 40°, relative to the inner surface of the receiving portion. ° or 45° angle. The frame locking portion 38 may also include a second surface disposed at a second angle relative to the inner surface of the receiving portion 36 , such as an angle between about 60° and about 90°. The second surface of the frame lock portion 38 may be sized and configured to contact and/or engage a corresponding portion of the backrest 14 , such as the backrest lock portion 40 .

The backrest locking portion, best seen in FIG. 25 , may include one or more locking gears, receiving portions, shoulders, cutouts, notches, recesses, and the like. The back lock portion 40 may also include one or more protrusions, protrusions, engagement members, and the like. The back locking portion 40 may include one or more angled surfaces and/or engagement or contact surfaces. For example, backrest locking portion 40 may include a first surface disposed at a first angle relative to backrest 14, such as about 10°, 15°, 20°, 25°, 30°, 35°, 40°, or 45°. ° angle. The back locking portion 40 may also include a second surface disposed at a second angle relative to the inner surface of the receiving portion, such as an angle between about 60° and about 90°. The second surface of the back locking portion 40 may be sized and configured to contact and/or engage a corresponding portion of the frame locking portion 38 . The frame locking portion 38 and the back locking portion 40 are preferably sized and configured to allow the back 14 to be securely attached to the frame 16 . Specifically, the frame locking portion 38 and the back locking portion 40 may allow the back 14 to be attached to the chair 10 with relative ease. In particular, the frame locking portion 38 and the back locking portion 40 may allow the back 14 to be easily and quickly connected to the frame 16 . The frame locking portion 38 and the back locking portion 40 may also prevent or make removal of the back 14 from the frame 16 difficult.

As shown in FIG. 26, when the backrest 14 is attached to the frame 16, the engagement portion 34 of the backrest 34 may be inserted into an opening in the upper portion or end of the frame. The engaging portion 34 of the backrest 14 can then be inserted into the frame 16 such that the connecting portion of the backrest is disposed within a receiving portion in the upper portion of the frame. The back locking portion 40 and the frame locking portion 38 can interact to allow the back 14 to be inserted into position into the frame 16, and the locking portion can prevent the connection of the back to the frame from being inadvertently disconnected.

In more detail, as shown in FIG. 27 , the back locking portion 40 may include a first surface 42 , and the first surface may be disposed at a first angle relative to the backrest 14 . For example, first surface 42 may be disposed at an angle between about 5° and about 45°, such as about 10°, about 15°, about 20°, about 25°, about 30°, about 35°, or about 40°. The back locking portion 40 may also include a second surface 44, and the second surface may be disposed at a second angle relative to the inner surface of the receiving portion. The second surface may be disposed at an angle between about 60° and about 90°, such as about 65°, about 70°, about 75°, about 80° or about 85°. The second surface 44 of the back lock portion 40 may be sized and configured to contact and/or engage a corresponding portion of the frame 16 , such as the frame lock portion 38 . The frame locking portion 38 and the back locking portion 40 are preferably sized and configured to allow the back 14 to be securely attached to the frame 16 .

Advantageously, the backrest 14 and frame 16 can be securely and quickly connected to each other without the use of fasteners, adhesives, or the like. Additionally, the frame locking portion 38 and the back locking portion 40 may allow the back 14 and frame 16 to be easily, quickly, and securely connected. It will be understood by those of ordinary skill in the art after reviewing this disclosure that the engagement portion 34, the receiving portion, the frame locking portion 38 and the back locking portion 40 may have other suitable shapes, sizes, configurations and arrangements depending, for example, on the for the intended use of the chair 10.

It will be understood by those of ordinary skill in the art after reviewing this disclosure that the chair 10 may have other suitable shapes, sizes, configurations and arrangements depending, for example, on the intended use of the chair. Those of ordinary skill in the art will also appreciate that the different components of chair 10 may have various shapes, sizes, configurations and arrangements depending, for example, on the intended use of the chair. Furthermore, those of ordinary skill in the art will appreciate that chair 10 may include any suitable number or combination of features or aspects.

While this invention has been described in terms of certain preferred embodiments, other embodiments that will be apparent to those skilled in the art are also within the scope of this invention. Accordingly, it is intended that the scope of the invention be limited only by the following claims.

Claims (20)

CLAIMS 1. A folding chair movable between a collapsible or stowed position and an unfolded or use position, said folding chair comprising: Seat; backrest; a frame attached to the seat and back, the frame comprising a right front leg, a left front leg, a right rear leg, and a left rear leg; a first bracket connected to a first side of the seat; a second bracket connected to a second side of the seat; a first guide disposed adjacent to at least a lower surface of the seat, at least a portion of the first guide being formed by a first bracket; a second guide disposed adjacent to at least a lower surface of the seat, at least a portion of the second guide being formed by a second bracket; and a cross member connected to the upper portion of the right rear leg and the upper portion of the left rear leg, the cross member is slidable relative to the lower portion of the seat, the cross member is slidable within the first guide and the second guide , the cross member is slidable relative to the lower portion of the seat and the first guide and the second guide when the chair moves between the folded position and the unfolded position. 2. The folding chair of claim 1 , further comprising a first engagement member disposed at a first end of the cross member and a second engagement member disposed at a second end of the cross member, the The first engagement member is at least partially disposed within said first guide and the second engagement member is at least partially disposed within the second guide. 3. The folding chair of claim 1 , wherein the cross member is in a first position relative to the lower portion of the seat and the first and second guides when the chair is moved between the folded position and the unfolded position. Swipe between position and second position. 4. The folding chair of claim 1, wherein the first portion of the first guide is formed by a portion of the seat; wherein the second portion of the first guide is formed by a portion of the first bracket; wherein the first portion of the second guide is formed by a portion of the seat; and Wherein the second portion of the second guide is formed by a portion of the second bracket. 5. The folding chair of claim 1, wherein a portion of the cross member contacts a portion of the lower portion of the seat when the chair is moved between the folded position and the unfolded position. 6. The folding chair of claim 1, wherein the right front leg and the right rear leg are pivotally connected to form a first leg assembly; wherein the left front leg and the left rear leg are pivotally connected to form a second leg assembly; wherein the lower portion of the right front leg and the lower portion of the right rear leg form two sides of a substantially equilateral triangle when the chair is in the deployed position; and Wherein the upper portion of the right front leg and the upper portion of the right rear leg form two sides of a substantially equilateral triangle when the chair is in the deployed position. 7. The folding chair of claim 1, wherein a lower surface of the first end of the cross member contacts a surface of the first guide; wherein a lower surface of the second end of the cross member contacts a surface of the second guide; wherein an upper surface of the first end of the cross member contacts a lower surface of the seat; and Wherein the upper surface of the second end portion of the cross member contacts the lower portion of the seat. 8. A folding chair movable between a folded or stowed position and an unfolded or in-use position, said folding chair comprising: backrest; Seat; A frame attached to the backrest and seat, said frame comprising: a first leg assembly comprising a front leg and a rear leg; and a second leg assembly comprising a front leg and a rear leg; a cross member connecting the rear leg of the first leg assembly and the rear leg of the second leg assembly; and A guide connected to the seat is sized and configured to guide the cross member as the chair moves between a folded position and an unfolded position. 9. The folding chair of claim 8, further comprising a groove at least partially defined by a portion of the guide and a portion of the seat. 10. The folding chair of claim 8, further comprising a stop that holds the chair in the deployed position when the stop contacts the cross member. 11. The folding chair of claim 10, wherein the stop is part of a guide. 12. The folding chair of claim 10, wherein the stop includes a first flange sized and configured to contact the cross member. 13. The folding chair of claim 8, wherein the seat forms at least part of the guide. 14. The folding chair of claim 8, wherein a portion of the cross member is angled so as to form a joint member; and Wherein the engagement member is disposed within a receiving portion of the guide. 15. A folding chair movable between a folded or in-use position and an unfolded or stowed position, said folding chair comprising: backrest; Seat; a frame sized and configured to support the backrest and seat, the frame comprising: a first leg assembly comprising a front leg and a rear leg; and a second leg assembly comprising a front leg and a rear leg; a cross member connecting the rear leg of the first leg assembly and the rear leg of the second leg assembly; a guide sized and configured to guide the cross member as the chair moves between the folded position and the unfolded position; and A stop sized and configured to contact the cross member when the chair is in the deployed position, the stop prevents further movement of the cross member toward the front of the chair. 16. The folding chair of claim 15, wherein the guide includes a groove. 17. The folding chair of claim 15, wherein the stop includes a flange disposed generally perpendicular to the length of the cross member. 18. The folding chair of claim 15, wherein the seat and bracket form at least part of the guide. 19. The folding chair of claim 15, wherein the front leg of the first leg assembly is pivotally connected to the rear leg of the first leg assembly; wherein the front leg of the second leg assembly is pivotally connected to the rear leg of the second leg assembly; wherein the lower portion of the right front leg and the lower portion of the right rear leg form two sides of a substantially equilateral triangle when the chair is in the deployed position; and Wherein the upper portion of the right front leg and the upper portion of the right rear leg form two sides of a substantially equilateral triangle when the chair is in the deployed position. 20. The folding chair of claim 15, wherein a lower surface of the cross member contacts a surface of the guide; and Wherein the upper surface of the cross member contacts the lower surface of the seat.