A built-in armrest for a stackable chair

Abstract

The utility model relates to a kind of embedded handrails for stackable chair, including stackable chair frame, the left and right sides of upper end of stackable chair frame are fixedly installed with handrail frame, the upper end of handrail frame is provided with connecting sleeve, the upper end of connecting sleeve is fixedly installed with handrail pad, the front side of connecting sleeve inside is provided with connecting lock hole, the front side of handrail frame inside is provided with movable cavity, the inside of movable cavity is provided with movable block, the upper end of movable block is fixedly installed with locking insertion rod, the lower end of movable block is fixedly installed with reset spring.The embedded handrails for stackable chair is connected with handrail frame through connecting sleeve, and is reinforced by cooperating locking structure, so as to form modular embedded handrail structure which can be spliced, and the handrail structure can be replaced flexibly by using this kind of modular design, and different material handrail modules are designed to adapt to different environments and personal use habits, so as to meet the use needs of different people and time periods.

Description

Technical Field

[0001] This utility model relates to the field of stackable chair technology, specifically to an embedded armrest for a stackable chair. Background Technology

[0002] The embedded armrest design of stackable chairs refers to integrating the armrest structure into the chair frame, achieving visual simplicity and functional optimization. The armrests are generally connected to the steel tubes of the chair frame through slotting or nesting processes to form a continuous support surface, avoiding the interference of protruding parts with the compactness of stacking, reducing the risk of structural loosening, improving load-bearing stability, and making them suitable for compact family spaces, reducing storage volume. For example, stackable chairs in small apartment dining rooms need to meet the needs of high-frequency stacking.

[0003] However, in actual use, the embedded armrests of stackable chairs have certain limitations in terms of applicability. Due to differences in regional climate and individual usage habits, the fixed embedded armrests on stackable chairs are difficult to meet the usage needs of different people and time periods. For example, in hot environments, the general armrests are not breathable enough, and in cool environments, the armrests may be too cold. Based on this, an embedded armrest for stackable chairs that can be easily replaced is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an embedded armrest for stackable chairs, which has the advantages of wide applicability and convenient selection and replacement of armrest modules. It solves the problem that due to differences in regional environment and climate, as well as deviations in personal usage habits, the fixed embedded armrests on stackable chairs cannot meet the usage needs of different people and time periods, thus hindering the improvement of the applicability of embedded armrests.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an embedded armrest for a stackable chair, comprising a stackable chair frame, armrest frames fixedly installed on both the left and right sides of the upper end of the stackable chair frame, a connecting sleeve provided at the upper end of the armrest frame, an armrest pad fixedly installed at the upper end of the connecting sleeve, a connecting lock hole opened on the front side inside the connecting sleeve, a movable cavity opened on the front side inside the armrest frame, a movable block provided inside the movable cavity, a locking rod fixedly installed at the upper end of the movable block, and a return spring fixedly installed at the lower end of the movable block, the lower end of the movable block being located inside the return spring. A limit rod is fixedly installed, and an adjusting rod is fixedly installed at the lower end of the limit rod. The lower end of the adjusting rod extends to the outside of the movable cavity and is fixedly installed with an adjusting handle. A connecting plate is provided at the front end of the connecting sleeve, and an anti-collision corner pad is fixedly installed at the front end of the connecting plate. A locking block is fixedly installed on one side of the rear end of the connecting plate, and an installation block is fixedly installed on the other side of the rear end of the connecting plate. A receiving groove is opened inside the connecting sleeve on the side of the connecting lock hole. A connecting post is provided inside the receiving groove. A threaded rod is fixedly installed at the lower end of the connecting post, and a knob is fixedly installed at the lower end of the threaded rod extending to the outside of the connecting sleeve.

[0006] Furthermore, the connecting sleeve engages with the handrail frame, and the upper end of the locking rod extends to the outside of the movable cavity and connects with the connecting lock hole pin.

[0007] Furthermore, the surface of the movable block is slidably connected to the movable cavity, and the surface of the locking rod is slidably connected to the movable cavity.

[0008] Furthermore, the adjusting rod is slidably connected to the movable cavity, and the lower end of the return spring is fixedly connected to the handrail frame.

[0009] Furthermore, a magnetic clasp is fixedly installed at the upper end of the connecting keyhole, and the upper end of the locking rod is in contact with the magnetic clasp.

[0010] Furthermore, both the locking block and the mounting block are engaged with the connecting sleeve, and the upper end of the connecting post is engaged with the mounting block.

[0011] Furthermore, the surface of the connecting column is slidably connected to the receiving groove, and the surface of the threaded rod is threadedly connected to the connecting sleeve.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] This stackable chair features embedded armrests that connect to the armrest frame via connecting clips and are reinforced with a locking structure. This allows for the design of modular, interlocking embedded armrest structures. This modular design enables flexible replacement of the armrest structure. Furthermore, the design incorporates armrest modules of different materials to adapt to various environments and individual usage habits, conveniently meeting the needs of different users and time periods, thus improving the applicability of the embedded armrests. The included corner protectors, which can be re-attached, further enrich the modular functionality of the embedded armrests, providing added protection for young children. This allows some families to directly install protective structures at this stage, enhancing the ease of use of the stackable chair. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the handrail frame structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the connecting sleeve and armrest pad structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the movable cavity structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the anti-collision corner pad structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the locking block and mounting block structure of this utility model.

[0020] In the diagram: 1. Stackable chair frame; 2. Armrest frame; 3. Connecting sleeve; 4. Armrest pad; 5. Connecting lock hole; 6. Movable cavity; 7. Movable block; 8. Locking rod; 9. Return spring; 10. Limiting rod; 11. Adjusting rod; 12. Adjusting handle; 13. Connecting plate; 14. Anti-collision corner pad; 15. Locking block; 16. Mounting block; 17. Receiving groove; 18. Connecting column; 19. Threaded rod; 20. Knob; 21. Magnetic suction plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-6This embodiment provides an embedded armrest for a stackable chair, comprising a stackable chair frame 1. Armrest frames 2 are fixedly installed on both the left and right sides of the upper end of the stackable chair frame 1. A connecting sleeve 3 is provided at the upper end of the armrest frame 2, and an armrest pad 4 is fixedly installed at the upper end of the connecting sleeve 3. A connecting lock hole 5 is opened on the front side inside the connecting sleeve 3. A movable cavity 6 is quickly formed on the front side inside the armrest frame 2. A movable block 7 is provided inside the movable cavity 6. A locking rod 8 is fixedly installed on the upper end of the movable block 7, and a return spring 9 is fixedly installed on the lower end of the movable block 7. A limit rod 10 is fixedly installed on the lower end of the movable block 7 inside the return spring 9. The lower end of the limit rod 10 is fixed... An adjusting rod 11 is installed, and an adjusting handle 12 is fixedly installed on the lower end of the adjusting rod 11 to the outside of the movable cavity 6. A connecting plate 13 is provided at the front end of the connecting sleeve 3, and an anti-collision corner pad 14 is fixedly installed at the front end of the connecting plate 13. A locking block 15 is fixedly installed on one side of the rear end of the connecting plate 13, and an installation block 16 is fixedly installed on the other side of the rear end of the connecting plate 13. A receiving groove 17 is opened inside the connecting sleeve 3 on the side of the connecting lock hole 5. A connecting post 18 is provided inside the receiving groove 17. A threaded rod 19 is fixedly installed at the lower end of the connecting post 18, and a knob 20 is fixedly installed at the lower end of the threaded rod 19 to the outside of the connecting sleeve 3.

[0023] In this embodiment, the connecting sleeve 3 can dock with the handrail frame 2 and be reinforced with a locking structure, facilitating the design of a modular embedded handrail structure that can be spliced ​​together. This modular design allows for flexible replacement of the handrail structure. Furthermore, handrail modules of different materials can be designed to adapt to different environments and individual usage habits, conveniently meeting the needs of different groups and time periods. Customers can select handrail modules specifically, and multiple modules can be provided for easy replacement according to seasonal changes (e.g., using a warm material handrail pad 4 module in winter and a cool material handrail pad 4 module in summer), allowing the material of the handrail pad 4 to flexibly adapt to individual usage habits.

[0024] Please see Figures 1-4 In this embodiment, the connecting sleeve 3 is engaged with the handrail frame 2, the upper end of the locking rod 8 extends to the outside of the movable cavity 6 and is connected to the connecting lock hole 5 by a pin, the surface of the movable block 7 is slidably connected to the movable cavity 6, the surface of the locking rod 8 is slidably connected to the movable cavity 6, the adjusting rod 11 is slidably connected to the movable cavity 6, the lower end of the return spring 9 is fixedly connected to the handrail frame 2, and a magnetic suction piece 21 is fixedly installed inside the upper end of the connecting lock hole 5, with the upper end of the locking rod 8 and the magnetic suction piece 21 fitting together.

[0025] It should be noted that pulling down the adjusting handle 12 causes the adjusting rod 11 to move the limiting rod 10 and the movable block 7 downwards (the size of the adjusting handle 12 is set within the groove structure of the armrest frame 2 so as not to affect the embedded stacking function of the stackable chair's embedded armrests). The locking rod 8 can be adjusted to retract (the limiting rod 10 can limit the retraction distance of the locking rod 8 to keep it within a suitable range). The connecting sleeve 3 can be inserted into the armrest frame 2. The return spring 9 can drive the movable block 7 to rise (the return spring 9 can be made of metal to ensure the elastic coefficient and service life). The locking rod 8 can be inserted into the connecting lock hole 5 to complete the convenient installation of the armrest module (the magnetic plate 21 can attract the locking rod 8 and work in conjunction with the locking structure).

[0026] Please see Figures 1-6 In this embodiment, both the engaging block 15 and the mounting block 16 are engaged with the connecting sleeve 3, the upper end of the connecting post 18 is engaged with the mounting block 16, the surface of the connecting post 18 is slidably connected with the receiving groove 17, and the surface of the threaded rod 19 is threadedly connected with the connecting sleeve 3.

[0027] It should be noted that the connecting plate 13 can be connected to the front interface of the connecting sleeve 3 (the left and right sides of the front end of the connecting sleeve 3 are provided with corresponding engaging slot structures, and the structure is a hidden design, which is convenient for use in some cases where the anti-collision corner pad 14 is not used). The engaging block 15 and the mounting block 16 can be inserted into the corresponding slots respectively. The knob 20 can turn the threaded rod 19, and the connecting post 18 can be tightly fitted to the mounting block 16 (the receiving groove 17 is provided with enough space, so that the connecting post 18 can be completely accommodated in the receiving groove 17 when unlocking, ensuring that the connecting post 18 is far away from the mounting block 16), thus completing the engaging and locking work and realizing the secondary installation of the anti-collision corner pad 14 (the anti-collision corner pad 14 is used to wrap the corner of the handrail frame 2, and the material is softer).

[0028] The working principle of the above embodiments is as follows:

[0029] In use, select the appropriate handrail module, pull down the adjusting handle 12, so that the adjusting rod 11 drives the limiting rod 10 and the movable block 7 to move downward, adjust and retract the locking rod 8, and then easily insert the connecting sleeve 3 into the handrail frame 2 to complete the initial locking connection. Then release the adjusting handle 12, and use the return spring 9 to drive the movable block 7 to rise, so that the locking rod 8 is inserted into the connecting lock hole 5, completing the convenient installation of the handrail module. By connecting the connecting plate 13 and the front interface of the connecting sleeve 3, the locking block 15 and the mounting block 16 are respectively inserted into the corresponding holes and slots. With the help of the knob 20, turn the threaded rod 19 to easily drive the connecting column 18 to fit tightly against the mounting block 16, complete the locking work, and realize the secondary installation of the anti-collision corner pad 14.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover 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 one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An embedded armrest for a stackable chair, comprising a stackable chair frame (1), characterized in that: Armrest frames (2) are fixedly installed on both the left and right sides of the upper end of the stacked chair frame (1). A connecting sleeve (3) is provided at the upper end of the armrest frame (2). An armrest pad (4) is fixedly installed at the upper end of the connecting sleeve (3). A connecting lock hole (5) is opened on the front side inside the connecting sleeve (3). A movable cavity (6) is opened on the front side inside the armrest frame (2). A movable block (7) is provided inside the movable cavity (6). A locking rod (8) is fixedly installed at the upper end of the movable block (7). A return spring (9) is fixedly installed at the lower end of the movable block (7). A limit rod (10) is fixedly installed at the lower end of the movable block (7) inside the return spring (9). An adjusting rod (11) is fixedly installed at the lower end of the limit rod (10). An adjusting handle (12) is fixedly installed on the lower end of the connecting sleeve (3) extending to the outside of the movable cavity (6). A connecting plate (13) is provided at the front end of the connecting sleeve (3). An anti-collision corner pad (14) is fixedly installed at the front end of the connecting plate (13). A locking block (15) is fixedly installed on one side of the rear end of the connecting plate (13). An installation block (16) is fixedly installed on the other side of the rear end of the connecting plate (13). A receiving groove (17) is opened inside the connecting sleeve (3) on the side of the connecting lock hole (5). A connecting post (18) is provided inside the receiving groove (17). A threaded rod (19) is fixedly installed at the lower end of the connecting post (18). A knob (20) is fixedly installed at the lower end of the threaded rod (19) extending to the outside of the connecting sleeve (3).

2. The embedded armrest for a stackable chair according to claim 1, characterized in that: The connecting sleeve (3) engages with the handrail frame (2), and the upper end of the locking rod (8) extends to the outside of the movable cavity (6) and is connected to the connecting lock hole (5) pin.

3. The embedded armrest for a stackable chair according to claim 2, characterized in that: The surface of the movable block (7) is slidably connected to the movable cavity (6), and the surface of the locking rod (8) is slidably connected to the movable cavity (6).

4. The embedded armrest for a stackable chair according to claim 3, characterized in that: The adjusting rod (11) is slidably connected to the movable cavity (6), and the lower end of the return spring (9) is fixedly connected to the handrail frame (2).

5. The embedded armrest for a stackable chair according to claim 1, characterized in that: A magnetic clasp (21) is fixedly installed at the upper end of the connecting lock hole (5), and the upper end of the locking rod (8) is in contact with the magnetic clasp (21).

6. The embedded armrest for a stackable chair according to claim 1, characterized in that: Both the locking block (15) and the mounting block (16) are engaged with the connecting sleeve (3), and the upper end of the connecting post (18) is engaged with the mounting block (16).

7. The embedded armrest for a stackable chair according to claim 6, characterized in that: The surface of the connecting column (18) is slidably connected to the receiving groove (17), and the surface of the threaded rod (19) is threadedly connected to the connecting sleeve (3).

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