Folding joint mechanism, folding frame, folding chair and folding table

Abstract

The utility model discloses a folding joint mechanism, a folding frame, a folding chair and a folding table, and the folding joint mechanism comprises a hinge seat, a plurality of connecting rods and a plurality of connecting rods, the hinge piece is hinged in the open slot; the supporting rod is movably fixed to the hinge piece, and the supporting rod can move between an unlocking position and a locking position; the unlocking position allows the hinging piece and the supporting rod to synchronously rotate relative to the hinging seat; the locking position enables one end of the supporting rod to be inserted into the inserting groove so as to prevent the hinge piece and the supporting rod from rotating relative to the hinge base. According to the folding joint mechanism, in the unlocking process, unlocking can be completed only by pulling the supporting rod to be separated from the inserting groove, compared with a traditional locking device and a traditional folding joint mechanism, complexity and discomfort of hand operation are reduced, and the unlocking process is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor products, and more specifically to a folding joint mechanism, a folding frame, a folding chair and a folding table. Background Art

[0002] The folding joint mechanism of the folding chair frame mainly includes a support rod and a hinge seat. The support rod is connected to the hinge seat by a hinge, ensuring that the chair frame can be easily folded and unfolded when needed. However, in order to firmly maintain the relative angle between the support rod and the hinge seat during use, a suitable locking device must be designed.

[0003] Common locking devices include elastic steel balls and locks. These devices can automatically lock when the chair frame is unfolded, providing a stable support for the user. However, there are some inconveniences when unlocking. First, the operating area is usually small, which requires precise hand operation when unlocking. Secondly, if an elastic steel ball is used, it may be necessary to apply a certain amount of force to release the steel ball from its locked position when unlocking, and the pressure felt by the hand is relatively large, which increases the difficulty of operation and discomfort for the user. Summary of the invention

[0004] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model proposes a folding joint mechanism. During the unlocking process, the unlocking can be completed by simply pulling the support rod out of the slot. Compared with the traditional locking device, the folding joint mechanism reduces the complexity and discomfort of hand operation, making the unlocking process simpler.

[0005] The utility model also provides a folding frame with the folding joint mechanism.

[0006] The utility model also provides a folding chair with the folding frame.

[0007] The utility model also provides a folding table with the folding frame.

[0008] The technical solution adopted by the utility model is: to provide a folding joint mechanism, including:

[0009] A hinged seat, which has a plurality of open slots, wherein the open slots are provided with slots;

[0010] A hinged member hinged in the open slot;

[0011] a support rod movably fixed to the hinge, the support rod being movable between an unlocked position and a locked position;

[0012] The unlocked position allows the hinge and the support rod to rotate synchronously relative to the hinge seat;

[0013] The locking position allows one end of the support rod to be inserted into the slot so as to prevent the hinge member and the support rod from rotating relative to the hinge seat.

[0014] After adopting the above structure, the user experience of the folding chair frame will be significantly improved. During the unlocking process of this technical solution, that is, when the support rod moves from the locked position to the unlocked position and the folding joint mechanism switches from the locked state to the unlocked state, the unlocking can be completed by pulling the support rod out of the slot. Compared with the traditional locking device, the present application reduces the complexity and discomfort of hand operation, and the unlocking process is simpler, and the user does not need to exert excessive force or perform complex hand operations.

[0015] In addition, the folding joint mechanism can also ensure the stable connection of the support rod when in the locked state, thereby providing stable support. The support rod is inserted into the slot of the hinge seat, making the chair frame structure more solid, and it is not easy for the user to shake or loosen during use, which improves the overall safety and stability.

[0016] According to an embodiment of the utility model, the support rod is elastically mounted on the hinge; that is, an elastic member is provided between the support rod and the hinge, and the elastic member provides an assisting force for the support rod to keep it inserted into the slot, thereby preventing the support rod from being separated from the slot due to factors such as gravity and causing mis-locking.

[0017] According to an embodiment of the utility model, one of the hinge and the support rod is slidably sleeved on the outside of the other; that is, the hinge is slidably sleeved on the inside or outside of the support rod.

[0018] According to one embodiment of the utility model, the folding joint mechanism also includes a connecting piece for being arranged inside the support rod, the connecting piece is provided with a long sliding groove along its own length direction, and the hinge is slidably matched with the long sliding groove; the setting of the connecting piece and the long sliding groove serves as a guide for the sliding of the hinge relative to the support rod, thereby avoiding deviation caused by the relative sliding of the hinge and the support rod.

[0019] According to one embodiment of the utility model, an elastic member is provided between the hinge and the connecting member, and the elastic member has an elastic tendency to enable the connecting member to drive the support rod to remain inserted into the slot; since the connecting member is installed inside the support rod, the positions of the connecting member and the support rod are relatively fixed, the two are regarded as a whole, and the elastic force of the elastic member is applied to the support rod through the connecting member.

[0020] According to one embodiment of the utility model, the support rod has a first waist-shaped hole that slides with the hinge shaft, and / or the connecting piece has a second waist-shaped hole that slides with the hinge piece; the setting of the first waist-shaped hole and the second waist-shaped hole prevents the hinge shaft from interfering with the relative movement between the hinge piece and the support rod.

[0021] According to one embodiment of the utility model, the support rod is a fixed rod, a telescopic rod, a spliced ​​rod or a folding rod; wherein the fixed rod is an integrated rod whose length cannot be changed, the telescopic rod is a rod with multiple sections that are interconnected and whose length can be extended or shortened, the spliced ​​rod is a rod formed by splicing multiple sections end to end, and the folding rod is a rod with multiple sections hinged end to end, and two adjacent sections of the rod can rotate relative to each other.

[0022] A folding frame comprises any one of the above-mentioned folding joint mechanisms.

[0023] A folding chair, the chair frame of which comprises any one of the above-mentioned folding joint mechanisms.

[0024] A folding table, the table frame of which comprises any one of the above-mentioned folding joint mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a cross-sectional view of the folding joint mechanism in the first embodiment of the utility model when in motion;

[0027] Figure 2 It is a cross-sectional view of the folding joint mechanism in the locked state in the first embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the folding joint mechanism in Embodiment 1 of the present utility model;

[0029] Figure 4 It is a cross-sectional view of the folding joint mechanism in the unlocked state in Embodiment 1 of the present utility model;

[0030] Figure 5 This is a schematic structural diagram of the folding joint mechanism in the unlocked state in Embodiment 1 of the present utility model;

[0031] Figure 6 It is a three-dimensional diagram of the folding joint mechanism in Embodiment 1 of the present utility model;

[0032] Figure 7 This is a schematic diagram of the connection of the support rods in Example 1 of the utility model;

[0033] Figure 8 This is a connection diagram of the connecting member in Example 1 of the utility model;

[0034] Fig. 9 It is an exploded view of the connecting member, the hinge member and the elastic member in Example 1 of the utility model;

[0035] Fig.10 It is a three-dimensional diagram of the connecting member in Example 1 of the utility model;

[0036] Fig.11 It is a three-dimensional diagram of the hinge in Embodiment 1 of the present utility model;

[0037] Fig.12 It is a partial structure of the folding frame in Example 2 of the utility model;

[0038] Fig.13 A three-dimensional diagram of a folding chair 2 in an embodiment of the present utility model;

[0039] Fig.14 It is a three-dimensional diagram of the support rod and the connecting member in Example 1 of the utility model;

[0040] Fig.15 It is a three-dimensional diagram of the folding frame in Embodiment 3 of the present utility model;

[0041] Fig.16 It is a three-dimensional diagram of the folding chair in Embodiment 3 of the present utility model.

[0042] Description of the numbers in the figure:

[0043] 1. Articulated seat; 2. Support rod; 3. Connecting piece; 4. Articulated piece; 5. Elastic piece; 6. Articulated shaft; 7. Connecting rod; 8. Chair cloth;

[0044] 11. Opening slot; 12. Slot; 13. Abutment portion; 14. Hinge hole;

[0045] 21. The first waist-shaped hole;

[0046] 31. Long slide groove; 32. First connecting portion; 33. Second waist-shaped hole;

[0047] 41. Through hole; 42. Second connecting portion. DETAILED DESCRIPTION

[0048] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1

[0049] like Figure 1-11 As shown, in this embodiment, a folding joint mechanism is disclosed, comprising:

[0050] The hinge seat 1 has a plurality of opening slots 11, and the opening slots 11 are provided with slots 12;

[0051] A hinged member 4 hinged in the opening slot 11;

[0052] a support rod 2 movably fixed to the hinge 4, the support rod 2 being movable between an unlocked position and a locked position;

[0053] The unlocked position allows the hinge 4 and the support rod 2 to rotate synchronously relative to the hinge seat 1;

[0054] The locking position allows one end of the support rod 2 to be inserted into the slot 12 , so as to prevent the hinge 4 and the support rod 2 from rotating relative to the hinge seat 1 .

[0055] Furthermore, in this embodiment, the support rod 2 is installed on the hinge 4, the support rod 2 can move relative to the hinge 4 along its own length direction, and the hinge 4 and the support rod 2 can rotate synchronously relative to the hinge seat 1; wherein, when the folding joint mechanism is in a locked state, one end of the support rod 2 is inserted into the slot 12.

[0056] Furthermore, the articulated seat 1 has four opening slots 11, and the side walls of the opening slots 11 are coaxially provided with articulated holes 14. The articulated member 4 is provided with an articulated shaft 6, and the articulated shaft 6 cooperates with the articulated holes 14 to realize the articulated cooperation between the articulated member 4 and the articulated seat 1, and the articulated member 4 can rotate relative to the articulated seat 1 around the center of the articulated shaft 6.

[0057] Furthermore, combined with Figure 7As shown, in this embodiment, the support rod 2 is a hollow structure, which is made of metal material, such as carbon steel or aluminum alloy, and carbon fiber and other materials can also be selected. The hinge 4 is slidably installed inside the support rod 2, that is, a through hole 41 is provided in the hinge 4, and a first waist-shaped hole 21 is provided on the support rod 2. A pin acts as a hinge shaft 6 and passes through the hinge hole 14, the first waist-shaped hole 21 and the through hole 41 in sequence, so that the hinge 4 and the support rod 2 can rotate synchronously relative to the hinge seat 1. And the support rod 2 can reciprocate relative to the hinge 4 along the length direction of the support rod 2, and the movement stroke depends on the length of the first waist-shaped hole 21.

[0058] Furthermore, combined with Fig.14 As shown, in another embodiment, the hinge 4' is slidably mounted on the outside of the support rod 2, that is, a through hole 41 is provided on the hinge 4', and a first waist-shaped hole 21 is provided on the support rod 2. A latch pin acts as a hinge shaft 6 and passes through the hinge hole 14, the through hole 41 and the first waist-shaped hole 21 in sequence, so that the hinge 4' and the support rod 2 can rotate synchronously relative to the hinge seat 1. And the support rod 2 can reciprocate relative to the hinge 4' along the length direction of the support rod 2, and the travel of the movement depends on the length of the first waist-shaped hole 21.

[0059] Specifically, the support rod 2 is elastically mounted on the hinge 4; that is, an elastic member 5 is provided between the support rod 2 and the hinge 4, and the elastic member 5 provides a booster for the support rod 2 to keep it inserted into the slot 12, so as to prevent the support rod 2 from being separated from the slot 12 due to factors such as gravity and causing mis-locking. The folding joint mechanism also includes a connecting member 3 for being arranged inside the support rod 2, and the connecting member 3 is provided with a long slide groove 31 along its own length direction, and the hinge 4 is slidably matched with the long slide groove 31; the setting of the connecting member 3 and the long slide groove 31 plays a guiding role for the hinge 4 to slide relative to the support rod 2, so as to prevent the hinge 4 and the support rod 2 from sliding relative to each other and causing deviation.

[0060] Specifically, an elastic member 5 is provided between the hinge 4 and the connecting member 3, and the elastic member 5 has an elastic tendency to enable the connecting member 3 to drive the support rod 2 to remain inserted into the slot 12; since the connecting member 3 is installed inside the support rod 2, the positions of the connecting member 3 and the support rod 2 are relatively fixed, and the two are regarded as a whole, and the elastic force of the elastic member 5 is applied to the support rod 2 through the connecting member 3.

[0061] Furthermore, in this embodiment, the connecting member 3 is provided with a cylindrical first connecting portion 32, the hinge member 4 is provided with a cylindrical second connecting portion 42, and the elastic member 5 is a tension spring, and the two ends of the tension spring are respectively connected to the first connecting portion 32 and the second connecting portion 42. In another embodiment, the elastic member 5 is a compression spring.

[0062] Furthermore, in the present embodiment, the hinge seat 1, the connecting member 3 and the hinge member 4 are all integrally formed by an injection molding process, and in other embodiments, the hinge seat 1 and the hinge member 4 are made of aluminum alloy.

[0063] Specifically, the support rod 2 has a first waist-shaped hole 21 that slides with the hinge shaft 6, and the connecting member 3 has a second waist-shaped hole 33 that slides with the hinge member 4; the setting of the first waist-shaped hole 21 and the second waist-shaped hole 33 prevents the hinge shaft 6 from interfering with the relative movement between the hinge member 4 and the support rod 2.

[0064] Specifically, in the present embodiment, the support rod 2 is a telescopic rod, while in other embodiments, the support rod 2 is a fixed rod, a spliced ​​rod or a folding rod; wherein the fixed rod is an integral rod whose length cannot be changed, the telescopic rod is a rod with multiple sections interconnected and whose length can be extended or shortened, the spliced ​​rod is a rod formed by splicing multiple sections end to end, and the folding rod is a rod with multiple sections hinged end to end, and two adjacent sections of the rod can rotate relative to each other.

[0065] Furthermore, in this embodiment, the folding joint mechanism is used as follows:

[0066] Combination Figure 2 As shown, when the folding joint mechanism is in the locked state, the support rod 2 is in the locked position, and the upper end of the support rod 2 is inserted into the slot 12 at the bottom of the opening slot 11. During the unlocking process, pull the support rod 2 to move along the length direction of the support rod 2 and away from the hinge seat 1, so that the end of the support rod 2 is disengaged from the slot 12. At this time, the elastic member 5 is stretched to generate elastic potential energy, and the hinge shaft 6 slides along the first waist-shaped hole 21 and the second waist-shaped hole 33. Then rotate the support rod 2 so that the outer wall of the support rod 2 abuts against the abutment portion 13 located at the mouth of the opening slot 11, and the abutment portion 13 is used to limit the folding position of the support rod 2. Repeat the above operation until the four support rods 2 are switched from the locked state to the unlocked state, thereby completing the unlocking of the folding joint mechanism.

[0067] Similarly, combined Figure 1-5 As shown, the folding joint mechanism switches from the unlocked state to the locked state by simply moving the support rod 2, which drives the hinge 4 to rotate synchronously relative to the hinge seat 1. Until the end of the support rod 2 is aligned with the slot 12, under the action of the elastic member 5, the elastic member 5 drives the support rod 2 to move relative to the hinge 4 through the connecting member 3 until the end of the support rod 2 is inserted into the slot 12, and the elastic potential energy of the elastic member 5 is released. In this way, the support rod 2 is moved from the unlocked position to the locked position. Embodiment 2

[0068] Combination Figure 12-13As shown, in this embodiment, a folding frame is disclosed, which includes two articulated seats 1, and the two articulated seats 1 are connected by a connecting rod 7. Each articulated seat 1 is provided with four support rods 2, two adjacent ones of which are seat support rods 2, namely a front seat support rod 2 and a backrest support rod 2, wherein the length of the backrest support rod 2 is longer than that of the front seat support rod 2, and the remaining two support rods 2 are chair leg support rods 2, and the ends of the chair leg support rods 2 are used to contact the ground.

[0069] Furthermore, in another embodiment, a folding chair including the folding frame of the present embodiment is disclosed, and the ends of the left and right backrest support rods 2 and the ends of the left and right front seat support rods 2 are respectively connected to the four corners of the seat cloth 8. Example

[0070] Combination Figure 15-16 As shown, in this embodiment, a folding frame is disclosed, which includes four articulated seats 1, and the four articulated seats 1 are connected to each other by a horizontally arranged connecting rod 7. The two front articulated seats 1 are each provided with two support rods 2, namely a front seat support rod 2 and a chair leg support rod 2, and the two rear articulated seats 1 are each provided with two support rods 2, namely a backrest support rod 2 and a chair leg support rod 2, wherein the length of the backrest support rod 2 is longer than that of the front seat support rod 2, and the end of the chair leg support rod 2 is used to contact the ground.

[0071] Furthermore, in another embodiment, a folding chair including the folding frame of the present embodiment is disclosed, and the ends of the two backrest support rods 2 and the ends of the two front seat support rods 2 are respectively connected to the four corners of the seat cloth 8.

[0072] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0077] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A folding joint mechanism, characterized in that: include: A hinged seat, which has a plurality of open slots, wherein the open slots are provided with slots; A hinged member hinged in the open slot; a support rod movably fixed to the hinge, the support rod being movable between an unlocked position and a locked position; The unlocked position allows the hinge and the support rod to rotate synchronously relative to the hinge seat; The locking position allows one end of the support rod to be inserted into the slot so as to prevent the hinge member and the support rod from rotating relative to the hinge seat.

2. A folding joint mechanism according to claim 1, characterized in that: The support rod is elastically mounted on the hinge.

3. A folding joint mechanism according to claim 1, characterized in that: One of the hinge and the support rod is slidably sleeved on the outer side of the other.

4. A folding joint mechanism according to claim 1, characterized in that: It also includes a connecting piece for being arranged inside the supporting rod, wherein the connecting piece is provided with a long sliding groove along its length direction, and the hinge piece is slidably matched with the long sliding groove.

5. A folding joint mechanism according to claim 4, characterized in that: An elastic member is provided between the hinge member and the connecting member, and the elastic member has an elastic tendency to enable the connecting member to drive the supporting rod to remain inserted into the slot.

6. A folding joint mechanism according to claim 4, characterized in that: The support rod has a first waist-shaped hole that is slidably matched with the hinge shaft, and / or the connecting member has a second waist-shaped hole that is slidably matched with the hinge member.

7. A folding joint mechanism according to claim 1, characterized in that: The support rod is a fixed rod, a telescopic rod, a spliced ​​rod or a folding rod.

8. A folding stand, characterized in that: It comprises the folding joint mechanism described in any one of claims 1-7.

9. A folding chair, characterized in that: The chair frame of the folding chair includes the folding joint mechanism described in any one of claims 1-7.

10. A folding table, characterized in that: The table frame of the folding table includes the folding joint mechanism described in any one of claims 1-7.

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