Folding structure for sofa armrest

Abstract

The utility model belongs to the technical field of furniture articles, and particularly relates to a folding structure for a sofa armrest. The utility model provides a folding structure for a sofa armrest, which is characterized in that by arranging connecting plate units, X-shaped folding arm units and telescopic air pressure rod units, 1, the connecting plate units are respectively arranged on a sofa base and the sofa armrest, and the two connecting plate units are connected and supported by the X-shaped folding arm units and the telescopic air pressure rod units; therefore, the structural integrity and stability are ensured; the lifting precision of the connecting plates is adjusted as required by adjusting the telescopic air pressure rod units, the two connecting plate units are conveniently and efficiently unfolded or folded, the lifting effect is stable, the connecting plate units are further connected through the X-shaped folding arm units, the supporting strength is stable, the size of the handrail is compressed in height, and the storage and transportation difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of furniture products, and in particular relates to a folding structure for sofa armrests. Background Art

[0002] A sofa is a multi-seat chair with soft cushions, including a sofa seat, a sofa back and sofa armrests. The sofa armrests are fixedly connected to the sofa seat, and the sofa armrests are an integrated fixed connection structure.

[0003] Existing sofa armrests are generally integrated fixed connection structures that cannot be folded during transportation or storage. They take up a lot of space, require a lot of manpower and material resources during transportation, and are time-consuming. They also require a lot of space during storage, increasing storage and transportation costs. To facilitate storage, transportation and portability, sofa armrests can be equipped with folding devices to achieve this goal.

[0004] For example, a Chinese utility model patent with patent publication number CN221794467U and publication date 2024-10-01 discloses a liftable automobile armrest elbow rest, including a cushion, a top plate installed on the lower surface of the cushion, a lifting frame, and a bottom plate. The left end of the lower surface of the top plate is provided with a first card slot distributed along the left-right direction, and the right end of the lower surface of the top plate is provided with a second card slot distributed along the left-right direction; the left end of the upper surface of the bottom plate is provided with a third card slot distributed along the left-right direction, and the right end of the upper surface of the bottom plate is provided with a fourth card slot distributed along the left-right direction; the lifting frame includes a first tilting frame and a second tilting frame, and the first tilting frame and the second tilting frame are hinged in the middle in an X shape, the top end of the first tilting frame can be optionally inserted into the first card slot, and the bottom end of the first tilting frame can be optionally inserted into the fourth card slot; the top end of the second tilting frame can be optionally inserted into the second card slot, and the bottom end of the second tilting frame can be optionally inserted into the third card slot.

[0005] The general structural principle of the automobile armrest elbow support disclosed in this utility model is as follows: During adjustment, the lifting frame can be further opened, moving the upper insertion rod further away from the top edge. This lowers the height of the cushion, allowing it to be inserted into the corresponding first, second, third, and fourth slots. If the upper insertion rod moves leftward by one first slot position, it moves rightward by one second slot position, the top edge of the second tilting rod moves rightward by one second slot position, the bottom edge of the second tilting rod moves leftward by one third slot position, and so on, thereby adjusting the height of the lifting frame.

[0006] However, the liftable automobile armrest elbow support has at least the following two deficiencies in actual use, which are, in other words, the technical problems to be solved by the present utility model.

[0007] 1. The cushion and top plate are placed on the lifting frame, and the top plate can be directly separated from the lifting frame, resulting in poor structural integrity and stability.

[0008] 2. The lifting level of the lifting frame is determined by the number of card slots. It is a graded lifting system with low lifting accuracy and poor armrest experience.

[0009] Therefore, in summary, there is an urgent need for a new type of armrest folding structure with strong lifting integrity and high lifting precision. Utility Model Content

[0010] The utility model provides a folding structure for a sofa armrest, which can be achieved by arranging a connecting plate unit, an X-shaped folding arm unit and a telescopic pneumatic rod unit: 1. The connecting plate unit is respectively installed on the sofa base and the sofa armrest, and the X-shaped folding arm unit and the telescopic pneumatic rod unit connect and support the two connecting plate units, thereby ensuring the integrity and stability of the structure; 2. By adjusting the telescopic pneumatic rod unit, the lifting accuracy of the connecting plate can be adjusted according to demand, and the two connecting plate units can be conveniently and efficiently unfolded or folded, with a smooth lifting effect, and the X-shaped folding arm unit is used to further connect the plate units, so that the support strength is stable, and the armrest volume is compressed in height, reducing the difficulty of storage and transportation.

[0011] The technical solution adopted by the present invention to solve the above-mentioned problem is: a folding structure for a sofa armrest, comprising two connecting plate units respectively arranged on the sofa base and the sofa armrest, an X-shaped folding arm unit whose upper and lower ends are respectively hingedly arranged on the two connecting plate units, and a telescopic pneumatic rod unit arranged on one of the connecting plate units and used to support the other connecting plate unit.

[0012] A further preferred technical solution is that the connecting plate unit includes a transverse plate, a side plate arranged on the transverse plate, a hinge hole arranged on the side plate, and a slide groove arranged on the side plate.

[0013] A further preferred technical solution is that the X-shaped folding arm unit includes two mutually hinged inclined plates, a hinge shaft arranged on one side of the two inclined plates and used to connect the hinge holes, and a sliding rod arranged on the other side of the two inclined plates and used to engage the slide groove.

[0014] A further preferred technical solution is that the telescopic gas rod unit includes a gas rod body arranged on one of the transverse plates, and a U-shaped connecting plate arranged on the telescopic rod of the gas rod body and used to support the other transverse plate.

[0015] A further preferred technical solution is that: the connecting plate unit further includes a cross bar provided on the cross plate and used for hingedly connecting the gas rod body and / or the U-shaped connecting plate.

[0016] A further preferred technical solution is that: the connecting plate unit further includes a vertical block provided on the transverse plate and used for mounting the transverse rod.

[0017] A further preferred technical solution is that: the connecting plate unit further includes a plurality of arc-shaped grooves provided on the sliding groove and used for engaging the sliding rod.

[0018] A further preferred technical solution is that an adjustment handle is further provided on the vertical block or the U-shaped connecting plate.

[0019] A further preferred technical solution is that the number of the arc-shaped grooves is 1-3.

[0020] A further preferred technical solution is that when the sliding rod is engaged with the arc-shaped groove, the acute angle between the sofa armrest and the horizontal plane is within a range of ≤5°. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the present utility model.

[0022] Figure 2 It is a three-dimensional diagram of the connecting plate unit in the present invention.

[0023] Figure 3 This is a connection diagram of the connecting plate unit and the X-shaped folding arm unit in the present utility model.

[0024] Figure 4 It is a cross-sectional view of the connecting plate unit and the telescopic gas pressure rod unit in the present invention.

[0025] Figure 5 It is a front view of the utility model.

[0026] Figure 6 It is a partial enlarged view of the present utility model.

[0027] Figure 7 This is a schematic diagram of the position of the utility model in the compressed state.

[0028] Figure 8 This is a schematic diagram of the position of the utility model in the unfolded state.

[0029] Figure 9 It is a three-dimensional diagram of the utility model in a compressed state.

[0030] Figure 10 This is a schematic diagram of the state in which the sliding rod of the present invention is clamped into the arc groove.

[0031] In the figure, the meanings of the marks are as follows:

[0032] Sofa base a, sofa armrest b;

[0033] Connecting plate unit 1, X-shaped folding arm unit 2, telescopic gas pressure rod unit 3, adjustment handle 4;

[0034] Horizontal plate 101 , side plate 102 , hinge hole 103 , slide groove 104 , horizontal bar 105 , vertical block 106 , arc groove 107 , inclined plate 201 , hinge shaft 202 , sliding rod 203 , gas rod body 301 , U-shaped connecting plate 302 . DETAILED DESCRIPTION

[0035] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0036] As attached Figure 1-10 As shown, a folding structure for a sofa armrest includes two connecting plate units 1 respectively arranged on a sofa base a and a sofa armrest b, an X-shaped folding arm unit 2 hingedly arranged on the two connecting plate units 1 at the upper and lower ends, and a telescopic gas pressure rod unit 3 arranged on one of the connecting plate units 1 and used to support the other connecting plate unit 1.

[0037] In this embodiment, the two connecting plate units 1 are respectively installed at the upper and lower ends of the sofa base a and the sofa armrest b. The connecting plate unit 1 can be fixedly set on the sofa base a and the sofa armrest b, and can also be installed by disassembly.

[0038] In addition, the X-shaped folding arm unit 2 is arranged between the two connecting plate units 1, and the X-shaped folding arm unit 2 is movably connected to the connecting plate unit 1. One side of the X-shaped folding arm unit 2 is hingedly set on the connecting plate unit 1, and the other side slides on the connecting plate unit 1, thereby satisfying the two connecting plate units 1 to be separated from or close to each other in two states, so as to achieve the purpose of lifting, lowering and folding the sofa armrest b.

[0039] In addition, the telescopic pneumatic rod unit 3 is used to adjust the distance between the two connecting plate units 1. The telescopic pneumatic rod unit 3 uses an existing pneumatic rod structure, which can also be replaced with a lifting structure such as a cylinder. When the telescopic pneumatic rod unit 3 is extended, it drives the connecting plate units 1 to separate, and the two sides of the X-shaped folding arm unit 2 approach each other, achieving an unfolded state. Similarly, when the telescopic pneumatic rod unit 3 is retracted, the two connecting plate units 1 approach each other, and the two sides of the X-shaped folding arm unit 2 move away from each other. Finally, the telescopic pneumatic rod unit 3 and the X-shaped folding arm unit 2 are folded into the two connecting plate units 1, making storage and transportation more convenient.

[0040] Finally. Usually, the sofa base a and the sofa armrest b need to be wrapped with a layer of outer covering material such as sofa leather to cover the inner material or the folding structure of the sofa armrest, and a zipper opening is provided on the outer covering cloth to facilitate the adjustment of the telescopic gas pressure rod unit 3, which is beautiful and convenient. The length of the outer covering material should be able to meet the requirements of the folding and unfolding states of the folding structure of the sofa armrest. Figure 7 As shown, the thickness of the connecting plate unit 1 can not only embed the telescopic gas rod unit 3 and the X-shaped folding arm unit 2, but also hide the outer packaging materials in the folded state.

[0041] The connecting plate unit 1 includes a transverse plate 101 , side plates 102 arranged on the transverse plate 101 , hinge holes 103 arranged on the side plates 102 , and sliding grooves 104 arranged on the side plates 102 .

[0042] In this embodiment, the horizontal panel 101 is respectively installed at the two ends of the sofa base a and the sofa armrest b, and the side panel 102 is used to install the X-shaped folding arm unit 2. In the folded state, the telescopic pneumatic rod unit 3 and the X-shaped folding arm unit 2 can be embedded in the side panel 102. The hinge hole 103 is used to hinge one side of the X-shaped folding arm unit 2, and the slide groove 104 is used for the other side of the X-shaped folding arm unit 2 to slide in this area, playing a role of limiting and guiding.

[0043] The X-shaped folding arm unit 2 includes two mutually hinged inclined plates 201, a hinge shaft 202 arranged on one side of the two inclined plates 201 and used to connect the hinge hole 103, and a sliding rod 203 arranged on the other side of the two inclined plates 201 and used to engage the slide groove 104.

[0044] In this embodiment, if Figure 3 As shown, the inclined plate 201 is an X-shaped plate hinged to each other in the middle. The left side of the inclined plate 201 is connected to the hinge hole 103 on the side plate 102 through the hinge shaft 202, and the right side of the inclined plate 201 is connected to the slide groove 104 on the side plate 102 through the sliding rod 203, so that the support can move accordingly with the rise and fall of the gas rod body 301.

[0045] The telescopic gas rod unit 3 includes a gas rod body 301 provided on one of the transverse plates 101 , and a U-shaped connecting plate 302 provided on the telescopic rod of the gas rod body 301 and used to support the other transverse plate 101 .

[0046] In this embodiment, the gas rod body 301 is an existing lifting gas rod, and the lifting height is selected by triggering the switch on the gas rod body 301. One end of the gas rod body 301 is set on the horizontal plate 101 on the sofa base a, and the other end is connected to the horizontal plate 101 on the sofa armrest b through the U-shaped connecting plate 302. The trigger switch of the gas rod body 301 is located at the position of the U-shaped connecting plate 302, and the U-shaped connecting plate 302 reserves an operating space for triggering the gas rod body 301. Figure 4 As shown, the gas rod body 301 can be vertically arranged between the two transverse plates 101 and can be respectively arranged at both ends of the transverse plates 101.

[0047] The connecting plate unit 1 further includes a cross bar 105 disposed on the cross plate 101 and used for hingedly connecting the gas rod body 301 and / or the U-shaped connecting plate 302 .

[0048] In this embodiment, as shown in the attached Figure 5 As shown, the gas rod body 301 can also be obliquely arranged between the two horizontal plates 101. The function of the horizontal rod 105 is to hinge the gas rod body 301 and / or the U-shaped connecting plate 302, so that the gas rod body 301 can be folded horizontally between the two horizontal plates 101, with better compression effect, and the gas rod body 301 simultaneously supports the two ends of the two connecting plate units 1, with smoother lifting and lowering and greater support strength.

[0049] The connecting plate unit 1 further includes a vertical block 106 disposed on the transverse plate 101 and used for mounting the transverse rod 105 .

[0050] In this embodiment, the vertical block 106 serves to further fix the cross bar 105 and enhance the strength of the cross bar 105 hinged to the gas rod body 301 .

[0051] The connecting plate unit 1 further includes a plurality of arc-shaped grooves 107 provided on the sliding groove 104 and used for engaging the sliding rod 203 .

[0052] In this embodiment, the arc groove 107 is concavely arranged on the slide groove 104, and its function is to limit the sliding rod 203 to a certain extent, thereby increasing the supporting strength of the X-shaped folding arm unit 2. At the same time, by adjusting the concave depth of the arc groove 107, the inclination angle of the sofa armrest b can be adjusted, so that the sofa armrest b forms a small angle with the horizontal plane, making full use of ergonomics, so that when the user puts his hand on the sofa armrest b, the elbow is lower than the wrist, and the comfort is higher.

[0053] The vertical block 106 or the U-shaped connecting plate 302 is further provided with an adjustment handle 4 .

[0054] In this embodiment, the function of the adjustment handle 4 is to more conveniently trigger the switch of the gas rod body 301 while saving more effort during the triggering process.

[0055] The number of the arc-shaped grooves 107 is 1-3.

[0056] In this embodiment, it is best to arrange the arc groove 107 at 1-3. The arc groove 107 is easily arranged on the sliding groove 104 close to the hinge shaft 202.

[0057] When the sliding rod 203 engages with the arc groove 107 , the acute angle between the sofa armrest b and the horizontal plane is within a range of ≤5°.

[0058] In this embodiment, the optimal range of the acute angle between the sofa armrest b and the horizontal plane is ≤5°, at which point the arm is more comfortable.

[0059] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications are possible within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. These modifications are non-inventive and are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A folding structure for a sofa armrest, characterized by: The invention comprises two connecting plate units (1) respectively arranged on a sofa base (a) and a sofa armrest (b), an X-shaped folding arm unit (2) hingedly arranged at the upper and lower ends on the two connecting plate units (1), and a telescopic gas pressure rod unit (3) arranged on one of the connecting plate units (1) and used to support the other connecting plate unit (1).

2. The folding structure for a sofa armrest according to claim 1, characterized in that: The connecting plate unit (1) comprises a transverse plate (101), a side plate (102) arranged on the transverse plate (101), a hinge hole (103) arranged on the side plate (102), and a slide groove (104) arranged on the side plate (102).

3. The folding structure for a sofa armrest according to claim 2, characterized in that: The X-shaped folding arm unit (2) comprises two mutually hinged inclined plates (201), a hinge shaft (202) provided on one side of the two inclined plates (201) and used to connect to the hinge hole (103), and a sliding rod (203) provided on the other side of the two inclined plates (201) and used to engage with the slide groove (104).

4. The folding structure for a sofa armrest according to claim 2, characterized in that: The telescopic gas pressure rod unit (3) comprises a gas rod body (301) arranged on one of the transverse plates (101), and a U-shaped connecting plate (302) arranged on the telescopic rod of the gas rod body (301) and used to support the other transverse plate (101).

5. The folding structure for a sofa armrest according to claim 4, characterized in that: The connecting plate unit (1) further comprises a cross bar (105) arranged on the cross plate (101) and used for hingedly connecting the gas rod body (301) and / or the U-shaped connecting plate (302).

6. The folding structure for a sofa armrest according to claim 5, characterized in that: The connecting plate unit (1) further comprises a vertical block (106) arranged on the transverse plate (101) and used for mounting the transverse rod (105).

7. The folding structure for a sofa armrest according to claim 3, characterized in that: The connecting plate unit (1) further comprises a plurality of arc-shaped grooves (107) arranged on the sliding groove (104) and used for engaging the sliding rod (203).

8. The folding structure for a sofa armrest according to claim 6, characterized in that: An adjustment handle (4) is also provided on the vertical block (106) or the U-shaped connecting plate (302).

9. The folding structure for a sofa armrest according to claim 7, characterized in that: The number of the arc-shaped grooves (107) is 1-3.

10. The folding structure for a sofa armrest according to claim 7, characterized in that: When the sliding rod (203) engages with the arc-shaped groove (107), the acute angle between the sofa armrest (b) and the horizontal plane is within a range of ≤5°.

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