Small table board mounted on seat backrest

Abstract

The utility model discloses a small table board mounted on a seat backrest, which comprises a small table board assembly rotatably mounted on the seat backrest and an unlocking button assembly mounted on the seat backrest and used for unlocking the small table board assembly. The unlocking button assembly comprises a spring bolt used for locking the small table plate assembly and a button used for unlocking the spring bolt, a spring bolt groove allowing the spring bolt to be inserted from top to bottom is formed in the upper end of the small table plate assembly, a button groove allowing the button to stretch out is formed in the rear side face of the seat backrest, when the button is pressed, the spring bolt can move upwards, and when the button is pressed, the spring bolt can move downwards. Therefore, the small table plate assembly can be unfolded after being unlocked. The whole structure is simple, the number of parts is reduced, meanwhile, the two connecting rod supports are separated for installation of the small table plate assembly, the overall installation size is reduced, the occupied space is reduced, the whole small table plate assembly can be conveniently installed on a seat backrest after being installed, and therefore overall installation is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of seat accessories, and particularly relates to a small table board installed on a seat backrest. Background Art

[0002] Equipping a small table board on the backrest of an automobile seat has become a common structure. At present, there are many structures of small table boards. Most of them connect the small table board with the seat backrest through a connecting rod structure, and an unlocking assembly for realizing the storage or opening of the small table board is arranged on the seat back plate. However, the internal structure of the current small table board is relatively complex, and the entire connecting rod bracket occupies a large space. Content of the Utility Model

[0003] The utility model intends to propose a small table board installed on a seat backrest, with a simple overall structure, small occupied space, convenient installation, and reduced cost at the same time.

[0004] For this reason, the technical solution adopted by the utility model is as follows: A small table board installed on a seat backrest includes a small table board assembly rotatably installed on the seat backrest and an unlocking button assembly installed on the seat backrest for unlocking the small table board assembly. A groove for accommodating the small table board assembly to be stored after rotation is arranged on the rear side surface of the seat backrest. The unlocking button assembly includes a lock tongue for locking the small table board assembly and a button for unlocking the lock tongue. A lock tongue groove for the lock tongue to insert from top to bottom is arranged at the upper end of the small table board assembly. A button groove for the button to protrude is arranged on the rear side surface of the seat backrest. When the button is pressed, the lock tongue can move upward, so as to realize the unfolding of the small table board assembly after unlocking.

[0005] As a preference in the above solution, the unlocking button assembly further includes a support base for installing the entire unlocking button assembly on the seat backrest. A button sliding groove for clamping the button is arranged on the right side surface of the support base. A button return spring located in the button sliding groove is arranged between the button and the support base. A lock tongue clamping groove for clamping the lock tongue is arranged on the support base, and the lock tongue clamping groove communicates with the rear end of the button sliding groove. A lock tongue return spring located in the lock tongue clamping groove is arranged between the lock tongue and the support base. A movement inclined surface for converting the forward and backward movement of the button into the up and down movement of the lock tongue is arranged on either the lock tongue or the button.

[0006] Further preferably, the lock tongue is provided with up and down sliding ridges for contacting the support base and extending up and down, and the button is provided with front and back sliding ridges for contacting the support base and extending front and back.

[0007] Further preferably, limiting protrusions are arranged at positions near both ends of the formed drum surface, and the outer diameter of the limiting protrusions is smaller than that of the contact protrusions.

[0008] Further preferably, the small table assembly includes a table skeleton assembly, an upper table board and a lower table board are correspondingly arranged on the upper and lower sides of the table skeleton assembly, and the upper table board and the lower table board are connected by a buckle. A lock block with a lock tongue groove is arranged at the upper end of the table skeleton assembly.

[0009] Further preferably, the table skeleton assembly includes a table skeleton and two connecting rod brackets installed on the seat back. Each connecting rod bracket is arranged on the left and right sides of the table skeleton through a corresponding connecting rod assembly. The connecting rod assembly includes an upper connecting rod and a lower connecting rod arranged at intervals up and down. Both ends of the upper connecting rod and the lower connecting rod are hinged to corresponding parts through corresponding hinge shafts, and a connecting rod groove for the connecting rod assembly to pass through is arranged on the seat back.

[0010] Further preferably, the hinge shaft between the upper connecting rod and the table skeleton is the rotating shaft of the damper.

[0011] The beneficial effects of the present utility model are as follows: The whole structure is simple, the number of parts is reduced. At the same time, the separate parts for installing the small table assembly are two connecting rod brackets, which not only reduces the overall weight and occupied space, but also facilitates pre-assembling the whole small table assembly into one assembly and then installing it on the seat back, thus facilitating the overall installation. Description of the Drawings

[0012] Figure 1 Schematic diagram after the installation of the present utility model Figure I 。

[0013] Figure 2 Exploded view of the unlocking button assembly in the present utility model.

[0014] Figure 3 Stereogram of the unlocking button assembly in the present utility model.

[0015] Figure 4 Schematic diagram of the unlocking button assembly in the present utility model.

[0016] Figure 5 Schematic diagram of the small table assembly in the present utility model.

[0017] Figure 6 Exploded view of the small table assembly in the present utility model.

[0018] Figure 7 Exploded view of the table skeleton assembly in the present utility model.

[0019] Figure 8 Schematic diagram of the connecting rod assembly in the present utility model.

[0020] Figure 9 Schematic diagram after the installation of the present utility model Figure II 。

[0021] Reference numerals: seat back - A, small table assembly - B, unlocking button assembly - C, groove - a, lock tongue groove - b, button groove - d, button - 1, limiting block - 1b, front - and - rear sliding rib - 1a, lock tongue - 2, up - and - down sliding rib - 2a, support base - 3, button sliding groove - 3a, lock tongue clamping groove - 3b, button return spring - 4, lock tongue return spring - 5, upper table board - 6, lower table board - 7, lock block - 8, table board skeleton - 9, connecting rod bracket - 10, upper connecting rod - 11, lower connecting rod - 12, damper - 13. Detailed implementation mode

[0022] The present utility model will be further described below with reference to embodiments and the accompanying drawings:

[0023] As Figure 1-8 shown, a small table board installed on the seat back is mainly composed of a small table board assembly B and an unlocking button assembly C. The small table board assembly B is rotatably installed on the seat back A, and the unlocking button assembly C is arranged on the seat back A and is used to unlock the small table board assembly. A groove a for accommodating the small table board assembly B after rotation and storage is provided on the rear side surface of the seat back A.

[0024] The unlocking button assembly C includes a lock tongue 2 for locking the small table board assembly B and a button 1 for unlocking the lock tongue 2. A lock tongue groove b for the lock tongue to insert from top to bottom is provided at the upper end of the small table board assembly, and a button groove d for the button 1 to extend out is provided on the rear side surface of the seat back A. When the button 1 is pressed, the lock tongue 2 can move upward, so that the small table board assembly B can be unfolded after unlocking, that is, the unlocking button assembly can convert the forward - and - backward movement of the button into the up - and - down movement of the lock tongue.

[0025] The unlocking button assembly C further includes a support base 3 for installing the entire unlocking button assembly C on the seat back. A button sliding groove 3a for clamping the button 1 is provided on the right side surface of the support base 3, and a button return spring 4 located in the button sliding groove 3a is provided between the button 1 and the support base 3. A lock tongue clamping groove 3b for clamping the lock tongue 2 is provided on the support base 3, and the lock tongue clamping groove 3b is communicated with the rear end of the button sliding groove 3a. A lock tongue return spring 5 located in the lock tongue clamping groove 3b is provided between the lock tongue 2 and the support base 3. In order to enable the lock tongue to move upward when the button is pressed, a movement inclined surface for converting the forward - and - backward movement of the button 1 into the up - and - down movement of the lock tongue 2 is provided on either the lock tongue 2 or the button 1.

[0026] When the button is pressed to push the button to move backward, the lock tongue can be pushed upward through the inclined surface, so that the lock tongue is pushed out of the lock tongue groove, thus realizing the unlocking of the small table board assembly. When the pressing of the button is cancelled, the button and the lock tongue return to their original positions under the action of the corresponding return springs. During installation, the lock tongue must be installed first and then the button.

[0027] Since the locking tongue needs to move up and down, in order to reduce friction, an up-and-down sliding rib 2a that extends up and down and is used to contact the support base 3 is provided on the locking tongue 2. Since the button needs to move back and forth, in order to reduce friction, a front-and-back sliding rib 1a that extends back and forth and is used to contact the support base 3 is provided on the button 1. Preferably, the ends of the up-and-down sliding rib and the front-and-back sliding rib that are far from the corresponding components are set to be arc-shaped.

[0028] For the convenience of installation, the locking tongue return spring and the button return spring adopt compression springs of the same specification. In order to prevent the button from being pressed excessively, a limiting block 1b is provided on the button. In order to prevent the locking tongue or the button from popping out of the corresponding slot under the action of the corresponding return spring, and at the same time for the convenience of installing the locking tongue and the button, wedge-shaped blocks are provided on both the locking tongue and the button.

[0029] The small table board assembly B includes a table board skeleton assembly. An upper table board 6 and a lower table board 7 are correspondingly arranged on the upper and lower sides of the table board skeleton assembly, and the upper table board 6 and the lower table board 7 are connected by buckles. A lock block 8 with a locking tongue groove is provided at the upper end of the table board skeleton assembly.

[0030] The table board skeleton assembly includes a table board skeleton 9 and two connecting rod brackets 10 installed on the seat back A. Each connecting rod bracket 10 is arranged on the left and right sides of the table board skeleton 9 through a corresponding connecting rod assembly. The connecting rod assembly includes an upper connecting rod 11 and a lower connecting rod 12 that are arranged at intervals up and down. Both ends of the upper connecting rod 11 and the lower connecting rod 12 are hinged to the corresponding components through corresponding hinge shafts. A connecting rod groove for the connecting rod assembly to pass through is provided on the seat back. Preferably, the table board skeleton is set to be an integrally cast aluminum alloy structure.

[0031] Preferably, the hinge shaft between the upper connecting rod 11 and the table board skeleton 9 is the rotating shaft of the damper 13, and the hinge shafts between the other connecting rods and the corresponding components are rivet shafts or pin shafts. The damper can avoid abnormal noises caused by excessive operating force during the opening process.

Claims

1. A small table installed on a seat back, comprising a small table assembly (B) rotatably installed on the seat back (A) and an unlocking button assembly (C) installed on the seat back (A) for unlocking the small table assembly, wherein a groove (a) for accommodating the small table assembly (B) after rotation is provided on the rear side of the seat back (A), and it is characterized in that: The unlocking button assembly (C) includes a locking tongue (2) for locking the small table board assembly (B) and a button (1) for unlocking the locking tongue (2). A locking tongue slot (b) is provided at the upper end of the small table board assembly for the locking tongue to insert downward from above. A button slot (d) for the button (1) to protrude is provided on the rear side of the seat back (A). When the button (1) is pressed, the locking tongue (2) can move upward, so that the small table board assembly (B) can be unfolded after unlocking.

2. The small table board installed on the seat back as described in claim 1, characterized in that: The unlocking button assembly (C) further includes a support base (3) for mounting the entire unlocking button assembly (C) on the seat back. A button sliding groove (3a) for clamping the button (1) is provided on the right side surface of the support base (3). A button return spring (4) is provided between the button (1) and the support base (3) and is located in the button sliding groove (3a). A locking tongue slot (3b) for clamping the locking tongue (2) is provided on the support base (3), and the locking tongue slot (3b) communicates with the rear end of the button sliding groove (3a). A locking tongue return spring (5) is provided between the locking tongue (2) and the support base (3) and is located in the locking tongue slot (3b). A movement inclined plane for converting the forward and backward movement of the button (1) into the up and down movement of the locking tongue (2) is provided on either the locking tongue (2) or the button (1).

3. The small table board installed on the seat back as described in claim 2, characterized in that: The locking tongue (2) is provided with upper and lower sliding ridges (2a) for contacting the support base (3) and extending up and down. The button (1) is provided with front and rear sliding ridges (1a) for contacting the support base (3) and extending front and back. The button is also provided with a limiting block (1b) for placing a transition pressing button.

4. The folding table installed on the seat back according to claim 1 or 2, characterized in that: The small table board assembly (B) includes a table board skeleton assembly. Upper table boards (6) and lower table boards (7) are correspondingly provided on both the upper and lower side surfaces of the table board skeleton assembly, and the upper table boards (6) and the lower table boards (7) are connected by snap fasteners. A lock block (8) with a locking tongue slot is provided at the upper end of the table board skeleton assembly.

5. The small table board installed on the seat back according to claim 4, characterized in that: The table board skeleton assembly includes a table board skeleton (9) and two connecting rod brackets (10) mounted on the seat back (A). Each connecting rod bracket (10) is arranged on the left and right sides of the table board skeleton (9) through corresponding connecting rod assemblies. The connecting rod assembly includes an upper connecting rod (11) and a lower connecting rod (12) arranged at intervals up and down. Both ends of the upper connecting rod (11) and the lower connecting rod (12) are hinged to corresponding components through corresponding hinge shafts. A connecting rod slot for the connecting rod assembly to pass through is provided on the seat back.

6. The small table board installed on the seat back according to claim 5, characterized in that: The hinge shaft between the upper connecting rod (11) and the table board skeleton (9) is the rotating shaft of a damper (13).

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