An adjustable back cushion

Abstract

This utility model discloses an adjustable backrest cushion, comprising: a main connecting piece; a main left piece located to the left of the main connecting piece; a main right piece located to the right of the main connecting piece; and a driving module connected to the main connecting piece, the main left piece, and the main right piece, used to drive the main left piece and the main right piece to simultaneously move closer to or further away from the main connecting piece. This utility model is adjustable, allowing for width adjustment and enhancing its applicability. Furthermore, the overall design is simple, reliable, and has low manufacturing costs.

Description

Technical Field

[0001] This utility model relates to the field of cushion technology, and in particular to an adjustable cushion. Background Technology

[0002] Currently, cushions are an indispensable textile product in bedrooms, offering comfort and decorative value that other items cannot replace. Cushions are used to adjust the contact points between the body and seats or beds to achieve a more comfortable angle and reduce fatigue. However, current cushion sizes are fixed and cannot be adjusted, resulting in limited adaptability. Therefore, an adjustable cushion is designed to address this issue. Summary of the Invention

[0003] According to an embodiment of the present invention, an adjustable backrest cushion is provided, comprising:

[0004] Main connecting piece;

[0005] The left main body piece is located to the left of the main body connecting piece;

[0006] The right side of the main body is located to the right of the main body connecting piece;

[0007] The drive module connects to the main body connecting piece, the left main body piece, and the right main body piece, and is used to drive the left main body piece and the right main body piece to move closer to or further away from the main body connecting piece simultaneously.

[0008] Furthermore, the driver module includes:

[0009] A rotating shaft is rotatably disposed inside the main connecting piece, with one end of the shaft extending through the inner wall of the main connecting piece to the outside.

[0010] The gear is located inside the main connecting piece and is sleeved on the rotating shaft;

[0011] The first transmission rod has one end connected to the left piece of the main body and the other end passing through the main body connecting piece. The first transmission rod is provided with a first rack that meshes with the gear.

[0012] The second transmission rod has one end connected to the right side of the main body and the other end passing through the main body connecting plate. The second transmission rod is equipped with a second rack that meshes with the gear.

[0013] Furthermore, a first guide groove is provided on the left side of the main body, and the other end of the second transmission rod is inserted into the first guide groove.

[0014] Furthermore, a second guide groove is provided on the right side of the main body, and the other end of the first transmission rod is inserted into the second guide groove.

[0015] Furthermore, it also includes: a driver that drives the shaft to rotate.

[0016] Furthermore, the first transmission rod and the first rack are integrally formed, and the second transmission rod and the second rack are integrally formed.

[0017] Furthermore, the left and right parts of the main body have the same shape.

[0018] Furthermore, it also includes: two first guide sleeves, which are disposed on both sides inside the main body connecting piece, and both first guide sleeves are fitted onto the first transmission rod.

[0019] Furthermore, it also includes: two second guide sleeves, which are disposed on both sides inside the main connecting piece, and both second guide sleeves are fitted onto the second transmission rod.

[0020] An adjustable cushion according to an embodiment of the present invention is adjustable, allowing for width adjustment and enhancing its versatility. Furthermore, the overall design is simple, reliable, and low-cost to manufacture.

[0021] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an adjustable cushion when it is retracted according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of an adjustable cushion when unfolded according to an embodiment of the present invention. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0025] First, combine Figures 1-2 This invention describes an adjustable backrest cushion according to an embodiment of the present invention, which is used to adjust the width of the backrest cushion and has a wide range of applications.

[0026] like Figures 1-2 As shown, an adjustable cushion according to an embodiment of the present invention has a main body connecting piece 100, a main body left piece 200, a main body right piece 300, and a driving module.

[0027] Specifically, such as Figures 1-2 As shown, the left main body piece 200 is located to the left of the main body connecting piece 100.

[0028] Specifically, such as Figures 1-2 As shown, the right body piece 300 is located to the right of the body connecting piece 100.

[0029] Specifically, such as Figures 1-2 As shown, the drive module connects the main body connecting piece 100, the main body left piece 200, and the main body right piece 300, and is used to drive the main body left piece 200 and the main body right piece 300 to simultaneously move closer to or away from the main body connecting piece 100. The drive module includes: a rotating shaft 401, a gear 402, a first transmission rod 403, and a second transmission rod 404. A rotating shaft 401 is rotatably disposed inside the main body connecting piece 100, with one end of the rotating shaft 401 extending through the inner wall of the main body connecting piece 100 to the outside; a gear 402 is located inside the main body connecting piece 100 and is sleeved on the rotating shaft 401; one end of the first transmission rod 403 is connected to the left main body piece 200, and the other end of the first transmission rod 403 extends through the main body connecting piece 100, with a first rack 4031 on the first transmission rod 403 meshing with the gear 402; one end of the second transmission rod 404 is connected to the right main body piece 300, and the other end of the second transmission rod 404 extends through the main body connecting piece 100, with a second rack 4041 on the second transmission rod 404 meshing with the gear 402. By rotating the shaft 401, the gear 402 can be driven to rotate. Since the gear 402 meshes with the first rack 4031 on the first transmission rod 403 and the second rack 4041 on the second transmission rod 404, the second transmission rod 404 can be moved, thereby causing the left main body piece 200 and the right main body piece 300 to simultaneously move closer to or further away from the main body connecting piece 100.

[0030] Furthermore, such as Figures 1-2 As shown, the left piece 200 of the main body is provided with a first guide groove (not shown in the figure), and the other end of the second transmission rod 404 is inserted into the first guide groove. The first guide groove is used to guide the second transmission rod 404 when it moves.

[0031] Furthermore, such as Figures 1-2 As shown, the right side plate 300 of the main body is provided with a second guide groove (not shown in the figure), and the other end of the first transmission rod 403 is inserted into the second guide groove. The second guide groove is used to guide the first transmission rod 403 when it moves.

[0032] Furthermore, such as Figures 1-2 As shown, an adjustable cushion according to an embodiment of the present invention further includes: a driver (not shown in the figure), which drives the rotating shaft 401 to rotate, and the driver can be manual or electric.

[0033] Furthermore, such as Figures 1-2 As shown, the first transmission rod 403 and the first rack 4031 are integrally formed, and the second transmission rod 404 and the second rack 4041 are integrally formed, which improves stability.

[0034] Furthermore, such as Figures 1-2 As shown, the left body piece 200 and the right body piece 300 have the same shape.

[0035] Furthermore, such as Figures 1-2 As shown, an adjustable cushion according to an embodiment of the present invention further includes: two first guide sleeves (not shown in the figure), the two first guide sleeves are disposed on both sides inside the main body connecting piece 100, and both first guide sleeves are sleeved on the first transmission rod 403 to guide the movement of the first transmission rod 403 and ensure the stability of the movement.

[0036] Furthermore, such as Figures 1-2 As shown, an adjustable cushion according to an embodiment of the present invention further includes: two second guide sleeves (not shown in the figure), the two second guide sleeves are disposed on both sides inside the main body connecting piece 100, and both second guide sleeves are sleeved on the second transmission rod 404 to guide the movement of the second transmission rod 404 and ensure the stability of the movement.

[0037] If the rotation of gear 402 causes the first transmission rod 403 to move to the left (away from the center) and the second transmission rod 404 to move to the right (away from the center), then the left main body piece 200 and the right main body piece 300 will move outwards synchronously, thereby increasing the overall width of the cushion. Conversely, if gear 402 rotates in the opposite direction, causing the first transmission rod 403 to move to the right (closer to the center) and the second transmission rod 404 to move to the left (closer to the center), then the left main body piece 200 and the right main body piece 300 will move inwards synchronously, thereby decreasing the overall width of the cushion. The main body connecting piece 100 and gear 402 serve as fixed center points, ensuring that the left main body piece 200 and the right main body piece 300 maintain symmetry during adjustment.

[0038] Above, refer to Figures 1-2 An adjustable backrest cushion according to an embodiment of the present invention is described, which has the following beneficial effects:

[0039] Stepless adjustment: The width of the cushion can be smoothly and continuously adjusted between the minimum and maximum values ​​by rotating gear 402.

[0040] Synchronous symmetrical adjustment: The left and right main body pieces 200 and 300 move simultaneously, equally, and in opposite directions to ensure that the center position of the cushion remains unchanged.

[0041] Mechanical transmission: The conversion from rotary motion to linear motion is achieved by using gear 402, first rack 4031, and second rack 4041. The structure is relatively simple and reliable.

[0042] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An adjustable backrest, characterized in that Include: Main connecting piece; The main body left piece is located on the left side of the main body connecting piece; The main body right piece is located on the right side of the main body connecting piece; A driving module is connected to the main body connecting piece, the main body left piece, and the main body right piece, and is used to drive the main body left piece and the main body right piece to simultaneously move closer to or further away from the main body connecting piece.

2. The adjustable cushion as described in claim 1, characterized in that, The driver module includes: A rotating shaft is rotatably disposed inside the main body connecting piece, and one end of the rotating shaft extends through the inner wall of the main body connecting piece to the outside; A gear, which is located inside the main connecting piece and is sleeved on the rotating shaft; A first transmission rod, one end of which is connected to the left plate of the main body, and the other end of which passes through the connecting plate of the main body. The first transmission rod is provided with a first rack that meshes with the gear. The second transmission rod has one end connected to the right plate of the main body and the other end passing through the connecting plate of the main body. The second transmission rod is provided with a second rack that meshes with the gear.

3. The adjustable cushion as described in claim 2, characterized in that, The left side of the main body is provided with a first guide groove, and the other end of the second transmission rod is inserted into the first guide groove.

4. The adjustable cushion as described in claim 2, characterized in that, The right side of the main body is provided with a second guide groove, and the other end of the first transmission rod is inserted into the second guide groove.

5. The adjustable cushion as described in claim 2, characterized in that, It also includes: a driver that drives the shaft to rotate.

6. The adjustable cushion as described in claim 2, characterized in that, The first transmission rod and the first rack are integrally formed, and the second transmission rod and the second rack are integrally formed.

7. The adjustable cushion as described in claim 2, characterized in that, The left and right panels of the main body have the same shape.

8. The adjustable cushion as described in claim 2, characterized in that, It also includes: two first guide sleeves, which are disposed on both sides inside the main body connecting piece, and both first guide sleeves are sleeved on the first transmission rod.

9. The adjustable cushion as described in claim 2, characterized in that, It also includes: two second guide sleeves, which are disposed on both sides inside the main body connecting piece, and both second guide sleeves are sleeved on the second transmission rod.

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