A seat back small table board and a car

Abstract

The utility model belongs to the field of small table board, provide a kind of seat backrest small table board and car, it includes: seat backrest;Table board body, it can be switched between the storage position and use position of seat backrest;First connecting rod and second connecting rod movably connected to seat backrest, first connecting rod is hinged to table board body by first pin shaft, second connecting rod is hinged to table board body by second pin shaft, and the end of first pin shaft is formed with the support portion extending to the outside of first connecting rod.Compared with prior art, the utility model has the advantages that by setting the support portion extending out of first connecting rod at the end of first pin shaft, the second connecting rod can be lapped on the support portion during the table board unfolding process, thereby realizing the stable structure of parallel stacking and mutual support of first connecting rod and second connecting rod in use state, not only effectively improve the support stiffness, but also improve the overall thickness of table board, facilitate the space utilization inside seat backrest.

Description

Technical Field

[0001] This utility model belongs to the field of small table, specifically relating to a small table for a seat back and an automobile. Background Technology

[0002] Small tables are installed on the back of car seats for the convenience of rear passengers. These tables are usually foldable; they can be unfolded downwards when needed and folded upwards to the back of the seat when not in use.

[0003] In the prior art, for example, Chinese Patent Publication No. CN222663271U, entitled "A Manually Suspended Table Structure and Car Seat," discloses a manually suspended table structure and car seat. This table structure includes a table, a first link, and a second link. The table has an unfolded position and a folded position on the back side of the seat back, and the table can move between these two positions. A ratchet mechanism, including a ratchet and a pawl, is also present in the table. When the table moves from top to bottom to the unfolded position, the ratchet and pawl are engaged, allowing the user to manually adjust the table's suspension position upwards. The ratchet and pawl also restrict the table's downward movement, keeping it suspended at the user-adjusted position. Therefore, this structure mainly relies on the coordinated operation of the first and second links to switch the table between different positions. During this process, the first and second links are always in a superimposed structural design, resulting in a relatively large overall thickness of the table, which is not conducive to saving space inside the seat back. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a small table for a seat backrest and a car that has a simple structure, good stability, enhances the strength of the table, and frees up space.

[0005] The purpose of this utility model can be achieved by addressing the following technical problem: proposing a small table on a seat back, comprising: a seat back;

[0006] The table body can be switched between a storage position and a use position on the seat back;

[0007] A first link and a second link are movably connected to the backrest of the seat. The first link is hinged to the table body via a first pin, and the second link is hinged to the table body via a second pin. The end of the first pin has a support portion extending out of the first link.

[0008] When the table body is in the storage position, both the first connecting rod and the second connecting rod retract into the seat back, so that the table body is pressed against the seat back.

[0009] When the tabletop body is unfolded to the use position, the second connecting rod rotates with the tabletop body and overlaps the support part, so that the second connecting rod is parallel to the first connecting rod and partially covers the first connecting rod.

[0010] In the aforementioned seat backrest table, the second link includes a main body and a reinforcing part. The main body is arranged side by side with the first link. The reinforcing part is connected to one side of the main body and is flush with its top end, and the reinforcing part covers the first link.

[0011] In the aforementioned type of seat back table, a reinforcing frame is also formed within the table body. The first pin and the second pin are both connected to the reinforcing frame, and a supporting sheet metal is provided within the reinforcing frame. The main body is movably pressed against the supporting sheet metal.

[0012] In the aforementioned type of seat back table, a support groove is formed in the main body, and the support part is movably engaged in the support groove.

[0013] In the aforementioned type of seat back table, the first connecting rod has an installation groove, the installation groove has an anti-collision pad, and the reinforcement part is movably pressed against the anti-collision pad.

[0014] In the aforementioned type of seat backrest table, the table body is further provided with a mounting groove, a baffle plate is connected in the mounting groove, a connecting post is formed on the baffle plate, a connecting hole is formed at the end of the main body away from the seat back, and the connecting post is movably hinged to the connecting hole.

[0015] In the aforementioned type of seat back table, the end of the reinforcing part is formed with an inclined surface, and a clearance groove is formed between the inclined surface and the main body part, and the baffle plate extends movably into the clearance groove.

[0016] In the aforementioned type of seat back table, the reinforcing frame also has overlapping extended sheet metal, which extends into the mounting groove and is supported by the cover plate.

[0017] In the aforementioned type of seat backrest table, an unlocking button and an unlocking block are also installed on the seat backrest. A locking groove is formed at the end of the table body. The unlocking button is used to drive the unlocking block to move along the height direction of the seat backrest, so that the unlocking block disengages from the locking groove, allowing the table body to switch from the storage position to the use position.

[0018] The technical solution adopted by this utility model to solve its technical problem is to also propose an automobile, including one of the above-mentioned seat back table panels.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention provides a small table for a seat back and a car by setting a support part extending from the end of the first pin shaft, so that the second link can overlap the support part during the unfolding of the table, thereby realizing a stable structure in which the first link and the second link are stacked side by side and support each other in the use state. This not only effectively improves the support rigidity, but also improves the overall thickness of the table, which facilitates the use of space inside the seat back.

[0021] (2) The supporting sheet metal provides a high-strength installation base for the pins and connecting rods, effectively improving the structural strength and connection reliability of the table body.

[0022] (3) The anti-collision pad can act as a buffer when the table is unfolded into place, effectively reducing the noise of rigid collision between metal parts, improving the quietness and comfort of product use, and extending the service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the tabletop's structure when it is in the storage position;

[0024] Figure 2 This is a schematic diagram of the tabletop body in its usage position.

[0025] Figure 3 This is a schematic diagram of the internal structure of the tabletop body;

[0026] Figure 4 This is a structural diagram of the first and second links when the tabletop body is unfolded.

[0027] Figure 5 This is an exploded view of the area between the first and second links;

[0028] Figure 6 This is a structural diagram of the first and second links when the tabletop is in the use position.

[0029] In the picture, 1 is the seat back; 10 is the unlock button;

[0030] 2. Tabletop body; 20. Reinforcing frame; 200. Support sheet metal; 201. Extension sheet metal; 21. Mounting groove; 22. Cover plate; 220. Connecting column; 23. Locking groove;

[0031] 3. First connecting rod; 30. First pin; 300. Support part; 31. Mounting groove; 32. Anti-collision pad;

[0032] 4. Second connecting rod; 40. Main body; 400. Support groove; 401. Connecting hole; 41. Reinforcing part; 410. Inclined surface; 410a. Clearance groove; 42. Second pin. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0035] like Figure 1 As shown, this solution mainly focuses on a small table on the back of a car seat, but this small table on the back of a car seat is not limited to use in automobiles, but can also be applied to other devices that require a small table.

[0036] like Figures 1 to 6 As shown, a small table on a seat back 1 includes a seat back 1, a table body 2, a first link 3, and a second link 4.

[0037] The table body 2 can be switched between a storage position and a use position on the seat back 1. The first link 3 and the second link 4 are both movably connected to the seat back 1. The first link 3 is hinged to the table body 2 via a first pin 30, and the second link 4 is hinged to the table body 2 via a second pin 42. The end of the first pin 30 has a support portion 300 extending out of the first link 3. When the table body 2 is in the storage position, the first link 3 and the second link 4 are both retracted into the seat back 1, so that the table body 2 is close to the seat back 1. When the table body 2 is unfolded to the use position, the second link 4 rotates with the table body 2 and overlaps the support portion 300, so that the second link 4 is parallel to the first link 3 and partially covers the first link 3.

[0038] Specifically, such as Figure 1 As shown, the table body 2 is fitted against the outer surface of the seat back 1. The first link 3 and the second link 4 are both completely housed inside the seat back 1, resulting in a smooth overall appearance with no protruding parts, thus not affecting seating comfort or aesthetics. When the user unlocks the table body 2 and gently pulls it downwards, the table body 2 can rotate relative to the seat back 1. Figure 2As shown in the usage position, during this process, the proximal ends (the end connected to the seat back 1) of the first link 3 and the second link 4 serve as fulcrums, while the distal ends (the end connected to the table body 2) move synchronously with the table body 2. When the table body 2 approaches the fully extended position, the second link 4 gradually overlaps the support part 300. At the same time, the second link 4 and the first link 3 are arranged side by side (parallel in the horizontal direction), and the second link 4 partially covers the first link 3, forming a stacked double-link support structure (see reference). Figure 4 The structure shown in the figure enables the two connecting rods to share the load on the tabletop, significantly improving the overall rigidity. It can be seen that this embodiment effectively improves the overall structural rigidity and load-bearing capacity of the tabletop after it is unfolded by using a linkage support structure. Combined with the first pin 30 and the support part 300, the overall rigidity of the two connecting rods is further enhanced. At the same time, the overall thickness of the tabletop is also improved, which facilitates the use of space inside the seat back 1.

[0039] The second link 4 includes a main body 40 and a reinforcing part 41. The main body 40 is arranged side by side with the first link 3. The reinforcing part 41 is connected to one side of the main body 40 and is flush with its top end, and the reinforcing part 41 covers the first link 3.

[0040] like Figures 3 to 4 As shown, this embodiment designs the second connecting rod 4 as a composite structure with a main body 40 and a reinforcing part 41. After the table is unfolded, the reinforcing part 41 covers the first connecting rod 3, forming a locally reinforced layered structure, which significantly improves the bending and torsional resistance of the connecting rod connection area and enhances the overall support stability. At the same time, the main body 40 and the first connecting rod 3 are arranged side by side, which is conducive to the uniform transmission of force, avoids stress concentration, and extends the service life. (For this reason, the overall thickness of the first connecting rod 3 does not need to be too thick. By superimposing it with the reinforcing part 41 and cooperating with the stable structural support of the support part 300, the overall structural strength can be effectively enhanced. Compared with the superimposed structure design of the first and second connecting rods in the traditional structure, this embodiment improves the overall thickness of the support structure while ensuring the structural strength of the table. That is, this structure can make the overall thickness of the table thinner so as to increase the space inside the seat.) It is worth noting that as the reinforcing part 41 covers the first link 3, the upper surfaces of the first link 3 and the second link 4 are flush, thereby ensuring a uniform distribution of overall stiffness. Compared with the traditional structural design in which the first link 3 and the second link 4 are completely superimposed, the main body part 40 and the reinforcing part 41 in this embodiment can effectively reduce the overall thickness of the table body 2 (that is, achieve a thinner table body 2 structure), thereby reducing the occupation of the internal space of the seat back 1 when switching to the storage position.

[0041] The tabletop body 2 also has a reinforcing frame 20. The first pin 30 and the second pin 42 are both connected to the reinforcing frame 20. A supporting sheet metal 200 is provided inside the reinforcing frame 20. The main body 40 is movable and pressed against the supporting sheet metal 200.

[0042] like Figure 4 As shown, the reinforcing frame 20 in this embodiment provides a high-strength installation foundation for the overall structure of the tabletop body 2, effectively improving the structural strength and connection reliability of the tabletop body 2; while the supporting sheet metal 200 provides a reliable limiting and support point for the main body 40 of the second connecting rod 4, which can effectively absorb vibration and impact when the tabletop is unfolded and used, prevent the connecting rod from shaking, improve the stability and durability of use, and extend the service life of the product.

[0043] A support groove 400 is formed inside the main body 40, and the support part 300 is movably engaged in the support groove 400.

[0044] like Figure 5 As shown, this embodiment achieves precise positioning and stable connection between the second link 4 and the support part 300 through the snap-fit ​​between the support part 300 and the support groove 400. After the table is unfolded into place, a reliable mechanical limit is formed to prevent the link from slipping or coming off during use, ensuring the firmness of the support structure. At the same time, the snap-fit ​​structure also provides a stable support effect for the overall structure of the second link 4. Moreover, the structure is easy to assemble and does not require additional fasteners, which helps to reduce manufacturing costs and maintenance difficulty.

[0045] Preferably, such as Figure 5 As shown, in this embodiment, an anti-collision pad 32 is provided in the mounting groove 31 of the first connecting rod 3, and the reinforcing part 41 of the second connecting rod 4 is pressed against the anti-collision pad 32 during the unfolding process. This can effectively buffer the impact force at the moment of contact between the two, reduce the hard collision between metal parts, reduce noise generation, and improve the user experience. At the same time, it can reduce wear caused by long-term use and improve the reliability and quietness of the mechanism.

[0046] The table body 2 is also provided with a mounting groove 21, and a baffle 22 is connected in the mounting groove 21. A connecting post 220 is formed on the baffle 22. A connecting hole 401 is formed at the end of the main body 40 away from the seat back 1. The connecting post 220 is movably hinged to the connecting hole 401.

[0047] like Figure 3 As shown, when the tabletop body 2 is in the use position, the ends of the first link 3 and the second link 4 away from the seat back 1 are both located within the mounting groove 21. It is worth noting that... Figure 3The baffle 22 shown is located at the opening of the mounting groove 21 (i.e., it is almost flush with the outer wall of the table body 2 to ensure the overall aesthetics). In addition, the baffle 22 with connecting column 220 is hinged to the connecting hole 401 of the second connecting rod 4, realizing the flexible connection and guiding function between the kinematic pairs, which helps to guide the connecting rod to unfold and retract smoothly. At the same time, the baffle 22 can effectively shield the internal structure, improve the overall appearance and aesthetics of the product, prevent foreign objects from entering the mechanism and causing jamming, and enhance safety and reliability.

[0048] An inclined surface 410 is formed at the end of the reinforcing part 41, and a clearance groove 410a is formed between the inclined surface 410 and the main body part 40. The baffle plate 22 extends movably into the clearance groove 410a.

[0049] like Figure 4 and Figure 6 As shown, the design of the inclined surface 410 and the clearance groove 410a in this embodiment provides the second link 4 with movement space during the unfolding and retraction process, avoiding movement interference between the second link 4 and the baffle plate 22, and ensuring smooth and uninterrupted movement of the mechanism; when the table body 2 retracts to Figure 6 When the storage position is shown, the second link 4 must rotate relative to the table body 2. At this time, the obstruction plate 22 can be inserted by relying on the clearance groove 410a (that is, the second link 4 and the obstruction plate 22 form an angle to hide the internal structure of the seat back 1), which enhances the sense of unity and refinement of the overall structure.

[0050] An overlapping extension sheet metal 201 is also formed on the reinforcing frame 20, which extends into the mounting groove 21 and is supported by the baffle plate 22.

[0051] Furthermore, such as Figure 4 As shown, in this embodiment, the extended sheet metal 201 extends from the reinforcing frame 20 and is supported below the baffle plate 22, providing it with additional structural support to prevent the baffle plate 22 from deforming or sagging due to stress during long-term use, thereby ensuring the hinge stability between the connecting column 220 and the connecting hole 401. This integrated sheet metal structure not only enhances the overall rigidity but also reduces the use of independent support components, simplifies the assembly process, and reduces costs.

[0052] The seat back 1 is also equipped with an unlock button 10 and an unlock block. The end of the table body 2 is formed with a locking groove 23. The unlock button 10 is used to drive the unlock block to move along the height direction of the seat back 1, so that the unlock block disengages from the locking groove 23, so that the table body 2 can be switched from the storage position to the use position.

[0053] When the tabletop body 2 is in the retracted position, an unlocking block is needed to lock it in place, ensuring stability when not in use. Specifically, the unlocking block remains inserted in the locking groove 23 under the force of a spring. When the tabletop body 2 needs to be used, the user can press the unlocking button 10. The unlocking button 10 then pushes the unlocking block out of the locking groove 23 using its inclined surface, thus achieving automatic locking and manual unlocking of the tabletop body 2 in the retracted position. This is simple, safe, and reliable. Furthermore, this locking mechanism is located inside the seat back 1, maintaining a clean appearance and providing good anti-accidental activation, preventing the tabletop from accidentally popping out during driving. It should be noted that the unlocking and locking structures of the tabletop body 2 in this embodiment are the same as those in the prior art in terms of structure and working principle, and will not be described in detail here.

[0054] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0056] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A small table on the back of a chair, characterized in that, include: Seat backrest; The table body can be switched between a storage position and a use position on the seat back; A first link and a second link are movably connected to the backrest of the seat. The first link is hinged to the table body via a first pin, and the second link is hinged to the table body via a second pin. The end of the first pin has a support portion extending out of the first link. When the table body is in the storage position, both the first connecting rod and the second connecting rod retract into the seat back, so that the table body is pressed against the seat back. When the tabletop body is unfolded to the use position, the second connecting rod rotates with the tabletop body and overlaps the support part, so that the second connecting rod is parallel to the first connecting rod and partially covers the first connecting rod.

2. The small table on the back of a chair according to claim 1, characterized in that, The second link includes a main body and a reinforcing part. The main body is arranged side by side with the first link. The reinforcing part is connected to one side of the main body and is flush with its top end, and the reinforcing part covers the first link.

3. A small table on a chair back as described in claim 2, characterized in that, The tabletop body also has a reinforcing frame, the first pin and the second pin are both connected to the reinforcing frame, and a supporting sheet metal is provided in the reinforcing frame, and the main body is movably pressed against the supporting sheet metal.

4. A small table on the back of a chair according to claim 2, characterized in that, A support groove is formed inside the main body, and the support part is movably engaged in the support groove.

5. A small table on the back of a chair according to claim 2, characterized in that, The first connecting rod has a mounting groove, and the mounting groove has an anti-collision pad. The reinforcing part is movably pressed against the anti-collision pad.

6. A small table on the back of a chair according to claim 3, characterized in that, The tabletop body is also provided with a mounting groove, a baffle plate is connected in the mounting groove, a connecting post is formed on the baffle plate, a connecting hole is formed at the end of the main body away from the seat back, and the connecting post is movably hinged to the connecting hole.

7. A small table on a chair back as described in claim 6, characterized in that, An inclined surface is formed at the end of the reinforcing part, and a clearance groove is formed between the inclined surface and the main body part, and the baffle plate extends movably into the clearance groove.

8. A small table on a chair back as described in claim 6, characterized in that, The reinforcing frame also has overlapping extended sheet metal that extends into the mounting groove and is supported by the shielding plate.

9. A small table on the back of a chair according to claim 1, characterized in that, The seat back is also equipped with an unlock button and an unlock block. The end of the table body is formed with a locking groove. The unlock button is used to drive the unlock block to move along the height direction of the seat back, so that the unlock block disengages from the locking groove, allowing the table body to switch from the storage position to the use position.

10. A car, characterized in that, Includes a small table on the back of a seat as described in any one of claims 1-9.

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