CN219813602U - Seat and folding bracket thereof - Google Patents

Abstract

The utility model relates to the field of folding frames, in particular to a seat and a folding bracket thereof. The folding bracket comprises a lower substrate, an upper substrate and two groups of shearing fork mechanisms arranged between the lower substrate and the upper substrate; the upper beam rod of the shearing fork mechanism is fixedly connected with the upper base plate, the lower beam rod is fixedly connected with the lower base plate, and the upper beam rod is connected with the lower beam rod through a shearing fork arm; the upper base plate can move in an opening and closing mode relative to the lower base plate based on the shearing fork mechanism; each group of shearing fork mechanism is provided with an elastic pin component for locking the shearing fork mechanism in a propped state; the lower base plate is provided with a traction component. The folding bracket is provided with the elastic pin assemblies on each group of scissor mechanisms, so that the stability of the folding bracket in the opening state can be ensured; the elastic pin component on each group of the scissor mechanisms can be simultaneously pulled by the pulling component, so that the locking state of the plurality of groups of the scissor mechanisms can be simultaneously released. Therefore, synchronous unlocking can be realized, and the use is more convenient.

Description

Seat and folding bracket thereof

Technical Field

The utility model relates to the field of folding frames, in particular to a seat and a folding bracket thereof.

Background

The scissor mechanism is adopted to realize lifting adjustment, is a common folding mode in the field of furniture at present, and can be used in structures such as a folding lifting table, a waist rest in a seat, a lifting handrail and the like. When the scissor mechanism is adopted for lifting, two or more groups of scissor mechanisms are generally required for ensuring the stability of the lifting platform, and when the lifting platform is used, the two or more groups of scissor mechanisms are required to work cooperatively, such as synchronous unlocking, locking and the like. In the prior art, locking control is generally carried out only on one group of scissor mechanisms, but the stability is insufficient, and the supporting strength is insufficient; or a plurality of groups of shearing fork mechanisms are linked by links to be controlled together; but has the technical problem of complex structure.

Disclosure of Invention

In order to solve the above problems, an object of the present utility model is to provide a folding bracket, in which an elastic pin assembly is disposed on each group of scissor mechanisms, so as to ensure stability of the folding bracket in a state of being opened; the elastic pin component on each group of the scissor mechanisms can be simultaneously pulled by the pulling component, so that the locking state of the plurality of groups of the scissor mechanisms can be simultaneously released. Therefore, synchronous unlocking can be realized, and the use is more convenient.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the folding bracket comprises a lower substrate, an upper substrate and two groups of shearing fork mechanisms arranged between the lower substrate and the upper substrate; the upper beam rod of the shearing fork mechanism is fixedly connected with the upper base plate, the lower beam rod is fixedly connected with the lower base plate, and the upper beam rod is connected with the lower beam rod through a shearing fork arm; the upper base plate can move in an opening and closing mode relative to the lower base plate based on the shearing fork mechanism; the method is characterized in that: each group of shearing fork mechanism is provided with an elastic pin component for locking the shearing fork mechanism in a propped state; the lower base plate is provided with a traction assembly which is connected with the elastic pin assembly of each group of scissor mechanisms and is used for simultaneously releasing the locking state of the plurality of groups of scissor mechanisms.

The utility model adopts the technical scheme, and the technical scheme relates to a folding bracket, wherein two groups of fork shearing mechanisms are adopted between a lower substrate and an upper substrate in the folding bracket for supporting, and the fork shearing mechanisms are used for adjusting the distance between the upper substrate and the lower substrate, so as to realize lifting and folding control. On the basis, the elastic pin assemblies are arranged on each group of the shearing fork mechanisms, and the elastic pin assemblies can be used for locking the shearing fork mechanisms, so that the upper substrate is maintained at a fixed height relative to the lower substrate. And elastic pin assemblies are arranged on each group of shearing fork mechanisms, so that the stability of the folding bracket in the opening state can be ensured. Further, the elastic pin assembly on each group of the scissor mechanisms can be pulled simultaneously by adopting the pulling assembly, so that the locking state of the plurality of groups of the scissor mechanisms can be simultaneously released. Therefore, synchronous unlocking can be realized, and the use is more convenient.

In a further scheme, the traction assembly comprises a traction rope and a guide wheel which is rotatably arranged on the lower substrate between the two groups of scissor mechanisms, and the traction rope is connected to the elastic pin assembly after bypassing the guide wheel. According to the scheme, the elastic pin assemblies can be operated by pulling the traction rope, so that unlocking of all the elastic pin assemblies is controlled. In a specific embodiment, the guide wheels are provided with two sets; the two ends of the traction rope are respectively connected to the elastic pin components of the two-side shearing fork mechanisms after bypassing the guide wheel; the middle part of the traction rope is led out from between the two groups of guide wheels to serve as a traction end. Namely, the unlocking of the two-side shearing fork mechanisms can be realized by pulling the middle part of the traction rope.

In a specific embodiment, the scissor arm comprises a first rotating rod and a second rotating rod, wherein the middle parts of the first rotating rod and the second rotating rod are mutually hinged, the lower end part of the first rotating rod is rotatably arranged on the first end part of the lower beam rod, and the upper end part of the first rotating rod is rotatably and slidably arranged on the second end part of the upper beam rod; the lower end part of the second rotating rod is rotationally and slidably arranged on the second end part of the lower beam rod, and the upper end part of the second rotating rod is slidably arranged on the first end part of the upper beam rod; the elastic pin assembly is used for locking or unlocking the lower end of the second rotating rod. In this scheme, first bull stick and second bull stick in the scissors arm can rotate each other, and both are one end rotation setting, and the other end slip setting. In the process of mutual rotation of the first rotating rod and the second rotating rod, the upper beam rod and the lower beam rod can be opened and closed relatively.

Preferably, a front retaining wall and a rear retaining wall are oppositely arranged at the second end part of the lower beam rod, a lower chute and a first pin hole are formed in the rear retaining wall, the lower end part of the second rotating rod is rotatably arranged in the lower chute, and a second pin hole is formed in the lower end part of the second rotating rod; the elastic pin assembly is positioned and installed on the front retaining wall, and the bolt end of the elastic pin assembly faces to the first pin hole of the rear retaining wall. When the second pin hole is dislocated with the first pin hole, the bolt end of the elastic pin assembly props against the lower end part of the second rotating rod; when the lower end part of the second rotating rod slides to the position, corresponding to the first pin hole, of the second pin hole along the lower sliding groove, the bolt end of the elastic pin assembly is inserted into the second pin hole and the first pin hole, and the shearing fork mechanism is locked.

In a further scheme, the elastic pin assembly comprises a pin shaft penetrating through the front retaining wall, a sleeve, a spring and a clamp spring, wherein the sleeve, the spring and the clamp spring are sleeved on the pin shaft between the front retaining wall and the rear retaining wall, and two ends of the spring are respectively supported on the sleeve and the clamp spring to drive the clamp spring and the pin shaft connected with the clamp spring to axially move. In this scheme, the sleeve cup joints and prop up on the preceding retaining wall at the round pin epaxial, and jump ring joint is epaxial, and the spring both ends prop up respectively on sleeve and jump ring, and so the spring acts on through jump ring action round pin axle.

A seat, characterized in that: a folding stand as described above is used.

Drawings

Fig. 1 is a schematic view showing a folded bracket in a storage state.

Fig. 2 is a schematic view showing an unfolded state of the folding bracket.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is a schematic structural view of the upper substrate hidden by the folding bracket.

Fig. 5 is a schematic view showing a state in which the scissors mechanism is housed.

Fig. 6 is a schematic view of the scissor mechanism in an unfolded state.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Example 1:

as shown in fig. 1 to 6, the present embodiment relates to a folding bracket, which includes a lower base plate 1, an upper base plate 2, and two sets of scissors mechanisms 3 disposed between the lower base plate 1 and the upper base plate 2. The upper beam 31 of the scissor mechanism 3 is fixedly connected with the upper base plate 2, the lower beam 32 is fixedly connected with the lower base plate 1, and the upper beam 31 and the lower beam 32 are connected through a scissor arm. The upper substrate 2 is openable and closable with respect to the lower substrate 1 by a scissor mechanism 3. Each group of the scissors mechanism 3 is provided with an elastic pin component 4 for locking the scissors mechanism 3 in a stretching state. The lower base plate 1 is provided with a traction component 5, and the traction component 5 is connected with the elastic pin component 4 of each group of the scissor mechanisms 3 and is used for simultaneously releasing the locking state of the plurality of groups of the scissor mechanisms 3. In the folding bracket, two groups of scissors mechanisms 3 are adopted between the lower substrate 1 and the upper substrate 2 for supporting, and the distance between the upper substrate 2 and the lower substrate 1 is adjusted to realize lifting and folding control. On the basis of the scheme, an elastic pin assembly 4 is arranged on each group of the scissor mechanisms 3, and the elastic pin assembly 4 can be used for locking the scissor mechanisms 3 so as to maintain the upper base plate 2 at a fixed height relative to the lower base plate 1. And the elastic pin assemblies 4 are arranged on each group of scissor mechanisms 3, so that the stability of the folding bracket in the opening state can be ensured. Further, the elastic pin assembly 4 on each group of the scissor mechanisms 3 can be pulled simultaneously by the pulling assembly 5, so that the locking state of the plurality of groups of the scissor mechanisms 3 can be released simultaneously. Therefore, synchronous unlocking can be realized, and the use is more convenient.

In a further scheme, the traction assembly 5 comprises a traction rope 51 and a guide wheel 52 rotatably arranged on the lower base plate 1 between the two groups of scissor mechanisms 3, and the traction rope 51 bypasses the guide wheel 52 and is connected to the elastic pin assembly 4. This solution allows to operate the elastic pin assemblies 4 by pulling the traction rope 51, thus controlling the unlocking of all the elastic pin assemblies 4. In a specific embodiment, the guide wheels 52 are provided with two sets. Both ends of the traction rope 51 are connected to the elastic pin assemblies 4 of the two-side scissor mechanisms 3 after passing around the guide wheels 52. The middle part of the hauling rope 51 is led out from between the two groups of guide wheels 52 to serve as a hauling end. Namely, the unlocking of the two-side fork mechanism 3 can be realized by pulling the middle part of the traction rope 51.

In the embodiment shown in fig. 6, the scissor arm includes a first rotating rod 33 and a second rotating rod 34 with their middle parts hinged to each other, the lower end of the first rotating rod 33 is rotatably disposed on the first end of the lower beam 32, and the upper end of the first rotating rod 33 is rotatably and slidably disposed on the second end of the upper beam 31. The lower end of the second rotating lever 34 is rotatably and slidably disposed on the second end of the lower beam 32, and the upper end of the second rotating lever 34 is slidably disposed on the first end of the upper beam 31. The elastic pin assembly 4 serves to lock or unlock the lower end of the second rotating lever 34. In this solution, the first and second rotating rods 33, 34 in the scissor arms can rotate with each other, and both are arranged with one end rotating and the other end sliding. In the process of mutual rotation of the first rotating rod 33 and the second rotating rod 34, the upper beam 31 and the lower beam 32 can be opened and closed relatively.

Preferably, the second end of the lower beam 32 is provided with a front retaining wall 35 and a rear retaining wall 36, the rear retaining wall 36 is provided with a lower chute 361 and a first pin hole 362, the lower end of the second rotating rod 34 is rotatably disposed in the lower chute 361, and the lower end of the second rotating rod 34 is provided with a second pin hole 341. The elastic pin assembly 4 is positioned and installed on the front retaining wall 35, and the pin end of the elastic pin assembly 4 faces the first pin hole 362 of the rear retaining wall 36. When the second pin hole 341 is offset from the first pin hole 362, the plug pin end of the elastic pin assembly 4 abuts against the lower end of the second rotating lever 34. When the lower end of the second rotating lever 34 slides along the lower slide groove 361 to the point that the second pin hole 341 corresponds to the first pin hole 362, the latch end of the elastic pin assembly 4 is inserted into the second pin hole 341 and the first pin hole 362, locking the scissor mechanism 3.

As shown in fig. 3, the elastic pin assembly 4 includes a pin shaft 41 penetrating through the front retaining wall 35, a sleeve 42 sleeved on the pin shaft 41 between the front retaining wall 35 and the rear retaining wall 36, a spring 43 and a clamp spring 44, wherein two ends of the spring 43 respectively prop against the sleeve 42 and the clamp spring 44, and drive the clamp spring 44 and the pin shaft 41 connected with the clamp spring to axially move. In this scheme, sleeve 42 cup joints on round pin axle 41 and prop up on preceding retaining wall 35, and jump ring 44 joint is on round pin axle 41, and spring 43 both ends prop up on sleeve 42 and jump ring 44 respectively, so spring 43 acts on through jump ring 44 acts on round pin axle 41.

The folding bracket is suitable for a scene of two-gear adjustment, namely comprises a storage state and an unfolding state, wherein the storage state is based on the gravity fall back of the upper substrate 2 and the scissor mechanism 3, and positioning is not needed. The unfolding state is required to be locked and positioned through a plurality of groups of elastic pin assemblies 4 so as to ensure the stability of the folding bracket in the unfolding state. When the scissors are required to be adjusted from the storage state to the unfolding state, the upper substrate 2 is only required to be pulled upwards, and the scissors mechanism 3 is required to be unfolded to the locking state. When the adjustment from the unfolded state to the stored state is required, the traction assembly 5 is required to be operated to unlock the elastic pin assembly 4, and gravity fall back based on the scissor mechanism 3, the upper base plate 2 and the load thereon.

Example 2:

a seat employing a folding leg as described in example 1. The folding bracket is applied to a seat and can be used as a lumbar support bracket, an armrest bracket, a cushion bracket and the like.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model.

Claims (7)

1. The folding bracket comprises a lower base plate (1), an upper base plate (2) and two groups of shearing fork mechanisms (3) arranged between the lower base plate (1) and the upper base plate (2); an upper beam rod (31) of the scissor mechanism (3) is fixedly connected with the upper substrate (2), a lower beam rod (32) is fixedly connected with the lower substrate (1), and the upper beam rod (31) is connected with the lower beam rod (32) through a scissor arm; the upper base plate (2) can move in an opening and closing manner relative to the lower base plate (1) based on the shearing fork mechanism (3); the method is characterized in that: each group of shearing fork mechanism (3) is provided with an elastic pin component (4) for locking the shearing fork mechanism (3) in a propped state; the lower base plate (1) is provided with a traction component (5), and the traction component (5) is connected with an elastic pin component (4) of each group of fork mechanisms (3) and is used for simultaneously releasing the locking state of the plurality of groups of fork mechanisms (3).

2. The folding leg according to claim 1, wherein: the traction assembly (5) comprises a traction rope (51) and a guide wheel (52) which is rotatably arranged on the lower base plate (1) between the two groups of scissor mechanisms (3), and the traction rope (51) is connected to the elastic pin assembly (4) after bypassing the guide wheel (52).

3. The folding leg according to claim 2, wherein: the guide wheels (52) are provided with two groups; the two ends of the traction rope (51) are respectively connected to the elastic pin components (4) of the two-side fork shearing mechanism (3) after bypassing the guide wheel (52); the middle part of the traction rope (51) is led out from between the two groups of guide wheels (52) to serve as a traction end.

4. The folding leg according to claim 1, wherein: the shearing fork arm comprises a first rotating rod (33) and a second rotating rod (34) with the middle parts mutually hinged, the lower end part of the first rotating rod (33) is rotatably arranged on the first end part of the lower beam rod (32), and the upper end part of the first rotating rod (33) is rotatably and slidably arranged on the second end part of the upper beam rod (31); the lower end part of the second rotating rod (34) is rotatably and slidably arranged on the second end part of the lower beam rod (32), and the upper end part of the second rotating rod (34) is slidably arranged on the first end part of the upper beam rod (31); the elastic pin assembly (4) is used for locking or unlocking the lower end part of the second rotating rod (34).

5. The folding leg according to claim 4, wherein: a front retaining wall (35) and a rear retaining wall (36) are oppositely arranged at the second end part of the lower beam rod (32), a lower sliding groove (361) and a first pin hole (362) are formed in the rear retaining wall (36), the lower end part of the second rotating rod (34) is rotatably arranged in the lower sliding groove (361), and a second pin hole (341) is formed in the lower end part of the second rotating rod (34); the elastic pin assembly (4) is positioned and installed on the front retaining wall (35), and the pin end of the elastic pin assembly (4) faces to a first pin hole (362) of the rear retaining wall (36); when the lower end part of the second rotating rod (34) slides along the lower sliding groove (361) to the position that the second pin hole (341) corresponds to the first pin hole (362), the pin end of the elastic pin assembly (4) is inserted into the second pin hole (341) and the first pin hole (362), and the scissor mechanism (3) is locked.

6. The folding leg according to claim 5, wherein: the elastic pin assembly (4) comprises a pin shaft (41) penetrating through the front retaining wall (35), a sleeve (42), a spring (43) and a clamp spring (44) sleeved on the pin shaft (41) between the front retaining wall (35) and the rear retaining wall (36), two ends of the spring (43) are respectively supported on the sleeve (42) and the clamp spring (44), and the clamp spring (44) and the pin shaft (41) connected with the clamp spring are driven to axially move.

7. A seat, characterized in that: use of a folding support according to any one of claims 1 to 6.