Automobile air outlet clamp with overload protection function

Abstract

The utility model discloses an anti-overload protection automobile air outlet clamp, which comprises a clamping arm, a locking knob and a connecting rod, a hinge shaft connected with the end part of the connecting rod is arranged in the clamping arm, a nut is arranged in the locking knob, the connecting rod is provided with a thread part, the nut is in threaded connection with the thread part, an anti-overload gear is arranged in the locking knob, and the anti-overload gear is connected with the connecting rod. The anti-overloading gear is fixedly connected with the nut, anti-overloading elastic pieces are symmetrically installed on the locking knob, the anti-overloading elastic pieces are provided with embedding parts corresponding to the outer tooth surface of the anti-overloading gear, the embedding parts are installed in tooth grooves of the outer tooth surface of the anti-overloading gear, when the locking knob rotates to the limit, the locking knob continues to rotate, the outer tooth surface of the anti-overloading gear pushes the embedding parts, and the anti-overloading gear rotates to the limit. When the locking knob is rotated continuously, the embedded part is separated from the tooth groove, so that the anti-overloading gear and the locking knob idle relatively, even if the locking knob is rotated continuously, the nut cannot rotate on the connecting rod continuously, the connecting rod is prevented from bending the hinge shaft, and the clamping arm is also prevented from being damaged due to continuous closing.

Description

Technical Field

[0001] This utility model relates to a clamping device for vehicle air conditioning vents, and more particularly to an automotive air vent clamp. Background Technology

[0002] An earlier application filed by the applicant for an automotive air vent clamp (application number 2023217214021) includes a clamping arm, a locking knob, and a connecting rod. A hinge shaft is installed inside the clamping arm, and a torsion spring for opening the clamping arm is mounted on the hinge shaft. The end of the connecting rod is connected to the hinge shaft. A nut is installed inside the locking knob, and the connecting rod has an external thread corresponding to the nut. When the locking knob rotates, it drives the nut to rotate, causing the nut and connecting rod to move relative to each other, moving the locking knob towards the clamping arm and pushing the clamping arm to rotate around the hinge shaft, thus achieving the effect of closing the clamping arm. In actual use, the applicant found that when the locking knob is rotated to its limit (generally during the closing operation to make the air vent clamp installation more stable), due to different users having different strength levels, those with greater strength apply excessive force, causing the connecting rod to bend the hinge shaft, thereby damaging the air vent clamp. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides an overload protection car air vent clip.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] An overload protection car air vent clamp includes a clamping arm, a locking knob, and a connecting rod. A hinge shaft connected to the end of the connecting rod is installed inside the clamping arm. A nut is provided inside the locking knob. The connecting rod has a threaded portion corresponding to the nut, and the nut is threadedly connected to the threaded portion. An overload protection gear is installed inside the locking knob and is fixedly connected to the nut. Overload protection springs are symmetrically installed on the locking knob. Each overload protection spring has an insert portion corresponding to the outer tooth surface of the overload protection gear, and the insert portion is installed in the tooth groove of the outer tooth surface of the overload protection gear.

[0006] The locking knob has a cavity, and the overload protection gear is installed inside the cavity.

[0007] The locking knob is provided with mounting slots on both sides of the cavity, and the overload protection spring is mounted in the mounting slot. After installation, the mounting part faces the cavity.

[0008] The fitting groove has a notch on the side near the cavity for the fitting part to spring back.

[0009] The clamping arm consists of a first clamping arm and a second clamping arm. Anti-slip pads are installed on the inner sides of both the first clamping arm and the second clamping arm. A first hinge portion is provided on the first clamping arm, and a second hinge portion is provided on the second clamping arm. The first hinge portion and the second hinge portion are hinged together by the hinge shaft.

[0010] The first hinge portion is provided with a first hinge piece, a third hinge piece, a sixth hinge piece, and an eighth hinge piece in sequence. The second hinge portion is provided with a second hinge piece, a fourth hinge piece, a fifth hinge piece, and a seventh hinge piece. After assembly, the second hinge piece is inserted between the first hinge piece and the third hinge piece, and the third hinge piece is inserted between the second hinge piece and the fourth hinge piece. Similarly, the sixth hinge piece is inserted between the fifth hinge piece and the seventh hinge piece, and the seventh hinge piece is inserted between the sixth hinge piece and the eighth hinge piece.

[0011] A washer is provided between the locking knob and the clamping arm. When the locking knob is tightened, the locking knob presses the washer, causing the washer to abut against the clamping arm. A torsion spring for opening the first and second clamping arms is installed on the hinge shaft. A limiting ring is installed on the connecting rod. One side of the limiting ring abuts against the torsion spring or the hinge shaft, and the other end abuts against the washer.

[0012] The front end of the first clamping arm is provided with a first limiting groove and a first limiting protrusion, and the front end of the second clamping arm is provided with a second limiting protrusion and a second limiting groove corresponding to the first limiting groove and the first limiting protrusion; a first notch is provided between the first limiting groove and the first limiting protrusion, and a second notch is provided between the second limiting protrusion and the second limiting groove.

[0013] Both the first clamping arm and the second clamping arm are provided with baffles on their outer sides.

[0014] The locking knob has a knob marking on its rear end face.

[0015] The beneficial effects of this utility model are as follows: An overload protection gear is installed inside the locking knob. The overload protection gear is fixedly connected to the nut. Overload protection springs are symmetrically installed on the locking knob. The overload protection springs are provided with an insert corresponding to the outer tooth surface of the overload protection gear. The insert is installed in the tooth groove of the outer tooth surface of the overload protection gear. When the locking knob is rotated to its limit and continues to rotate, the outer tooth surface of the overload protection gear pushes the insert, causing the insert to disengage from the tooth groove. This causes relative free rotation between the overload protection gear and the locking knob, so that even if the locking knob continues to rotate, the nut will not continue to rotate on the connecting rod, thus avoiding bending of the hinge shaft on the connecting rod and preventing damage to the clamping arm from continued closing. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a structural diagram of the present invention;

[0018] Figure 2 This is an exploded view of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation of overload protection gears and overload protection springs;

[0020] Figure 4 This is a structural diagram of the locking knob;

[0021] Figure 5 This is a schematic diagram of the structure of the first embodiment of the first clamping arm;

[0022] Figure 6 This is a schematic diagram of the structure of the first embodiment of the second clamping arm;

[0023] Figure 7 This is a structural schematic diagram of the second embodiment of the first clamping arm;

[0024] Figure 8 This is a schematic diagram of the structure of the second embodiment of the second clamping arm. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0026] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0027] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0028] Reference Figures 1 to 8An overload protection car air vent clamp includes a clamping arm 1, a locking knob 2, and a connecting rod 3. A hinge shaft 4 connected to the end of the connecting rod 3 is installed inside the clamping arm 1. A nut 5 is provided inside the locking knob 2. The connecting rod 3 has a threaded portion corresponding to the nut 5, and the nut 5 is threadedly connected to the threaded portion. An overload protection gear 6 is installed inside the locking knob 2 and is fixedly connected to the nut 5. Overload protection springs 7 are symmetrically installed on the locking knob 2, corresponding to the overload protection gears 6. The outer tooth surface of the gear is provided with an insert 8, which is installed in the tooth groove of the outer tooth surface of the overload protection gear 6. When the locking knob 2 is rotated to its limit and continues to rotate, the outer tooth surface of the overload protection gear 6 pushes the insert 8, causing the insert 8 to disengage from the tooth groove. This causes the overload protection gear 6 and the locking knob 2 to rotate relative to each other, so that even if the locking knob 2 continues to rotate, the nut 5 will not continue to rotate on the connecting rod 3, thus preventing the connecting rod 3 from bending the hinge shaft 4 and preventing the clamping arm 1 from continuing to close and being damaged.

[0029] After the locking knob 2 is rotated to its limit, it continues to rotate. The insert 8 will disengage from the previous tooth groove and then rotate to the next tooth groove. The insert 8 will spring back into the tooth groove, and a knocking sound will be produced. When the locking knob 2 is rotated continuously, the knocking sound will continue to be emitted, reminding the user that the knob has been turned to its limit, which means that the maximum clamping force that this product can achieve has been reached.

[0030] The overload protection gear 6 and nut 5 are manufactured by placing the nut 5 inside the gear mold for manufacturing the overload protection gear 6, and then using an injection molding process to form the overload protection gear 6 and nut 5 into a single component.

[0031] The locking knob 2 has a cavity 9 inside, and the overload protection gear 6 is installed inside the cavity 9.

[0032] The locking knob 2 is provided with mounting slots 10 on both sides of the cavity 9. The overload protection spring 7 is mounted in the mounting slots 10. After installation, the mounting part 8 faces the cavity 9.

[0033] The fitting groove 10 is provided with a notch 11 on the side near the cavity 9 for the fitting part 8 to spring back, providing space for the movement of the fitting part 8.

[0034] After the anti-overload gear 6, anti-overload spring 7, etc. are installed on the locking knob 2, a knob end cover 30 is installed on the locking knob 2 to install the anti-overload gear 6, anti-overload spring 7, etc. inside the locking knob 2, forming a knob assembly. The knob end cover 30 is fixed to the locking knob 2 by screws 31.

[0035] A universal ball 32 is injection molded on the end of the connecting rod 3. After the internal structural parts of the locking knob 2 are assembled into a knob assembly, the connecting rod 3 is screwed onto the knob assembly.

[0036] The clamping arm 1 is composed of a first clamping arm 12 and a second clamping arm 13. Anti-slip rubber pads 14 are installed on the inner sides of both the first clamping arm 12 and the second clamping arm 13 to increase the friction of the air outlet clamp and prevent it from sliding in the air outlet. A first hinge part is provided on the first clamping arm 12 and a second hinge part is provided on the second clamping arm 13. The first hinge part and the second hinge part are hinged through the hinge shaft 4.

[0037] The first hinge portion is provided with a first hinge piece 15, a third hinge piece 16, a sixth hinge piece 17, and an eighth hinge piece 18 in sequence. The second hinge portion is provided with a second hinge piece 19, a fourth hinge piece 20, a fifth hinge piece 21, and a seventh hinge piece 22. After assembly, the second hinge piece 19 is inserted between the first hinge piece 15 and the third hinge piece 16, and the third hinge piece 16 is inserted between the second hinge piece 19 and the fourth hinge piece 20. Similarly, the sixth hinge piece 17 is inserted between the fifth hinge piece 21 and the seventh hinge piece 22, and the seventh hinge piece 22 is inserted between the sixth hinge piece 17 and the eighth hinge piece 18.

[0038] A washer 23 is provided between the locking knob 2 and the clamping arm 1. When the locking knob 2 is tightened, the locking knob 2 presses against the washer 23, causing the washer 23 to abut against the clamping arm 1. A torsion spring 24 for opening the first clamping arm 12 and the second clamping arm 13 is installed on the hinge shaft 4. A limiting ring 25 is installed on the connecting rod 3. One side of the limiting ring 25 abuts against the torsion spring 24 or the hinge shaft 4, and the other end abuts against the washer 23. After the user turns it to a certain position, the limiting ring 25 will press against the locking knob 2, preventing it from being turned further, thus preventing over-tightening and causing the locking knob 2 or the clamping arm to burst, further improving the protection of this product. In addition, this product can also remove the limiting ring 25, and the overload protection gear 6 and the overload protection spring 7 alone provide the overload protection function for this product.

[0039] The front end of the first clamping arm 12 is provided with a first limiting groove 121 and a first limiting protrusion 122, and the front end of the second clamping arm 13 is provided with a second limiting protrusion 131 and a second limiting groove 132 corresponding to the first limiting groove 121 and the first limiting protrusion 122; a first notch 26 is provided between the first limiting groove 121 and the first limiting protrusion 122, and a second notch 27 is provided between the second limiting protrusion 131 and the second limiting groove 132. When installing the air outlet clamp, the air outlet clamp needs to be clamped on the horizontal fan blade of the air outlet. There is also a vertical guide fan blade inside the car air outlet. However, since it needs to extend into the air outlet, to prevent the front end of the air outlet clamp from being blocked by the vertical guide fan blade during installation, the first notch 26 and the second notch 27 are provided at the front end of the air outlet clamp, so that the air outlet clamp can extend into the air outlet and the installation is more stable.

[0040] Both the first clamping arm 12 and the second clamping arm 13 are provided with baffles 28 on their outer sides.

[0041] The rear end face of the locking knob 2 is provided with a knob mark 29, which allows the user to identify the direction of tightening or loosening the locking knob 2, making it convenient for the user to use.

[0042] This utility model also provides another embodiment, in which the first clamping arm 12 and the second clamping arm 13 are not provided with limiting grooves and limiting protrusions, as shown in Embodiment 2. Figure 7 and Figure 8 As shown, some vehicle air vents have lateral fan blades with a long depth. During installation, models with limiting grooves and limiting protrusions are not long enough, and the limiting protrusions cannot be fastened into the limiting grooves, making it impossible for the air vent clip to hold it securely. Furthermore, this can damage the fan blades after installation. By eliminating the limiting grooves and limiting protrusions, the air vent clip can better adapt to the design of this type of vehicle air vent. Without the limiting protrusions and limiting grooves, the long-depth fan blades can be clamped, improving the adaptability of the air vent clip.

[0043] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0045] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. An overload protection car air vent clamp, comprising a clamping arm (1), a locking knob (2), and a connecting rod (3), wherein a hinge shaft (4) connected to the end of the connecting rod (3) is installed inside the clamping arm (1), a nut (5) is provided inside the locking knob (2), and the connecting rod (3) is provided with a threaded portion corresponding to the nut (5), wherein the nut (5) is threadedly connected to the threaded portion, characterized in that... An overload protection gear (6) is installed inside the locking knob (2). The overload protection gear (6) is fixedly connected to the nut (5). Overload protection springs (7) are symmetrically installed on the locking knob (2). The overload protection springs (7) are provided with an insert (8) corresponding to the outer tooth surface of the overload protection gear (6). The insert (8) is installed in the tooth groove of the outer tooth surface of the overload protection gear (6).

2. The car air vent clip according to claim 1, characterized in that... The locking knob (2) has a cavity (9) inside, and the overload protection gear (6) is installed inside the cavity (9).

3. The car air vent clip according to claim 2, characterized in that... The locking knob (2) is provided with mounting slots (10) on both sides of the cavity (9). The overload protection spring (7) is mounted in the mounting slot (10). After installation, the mounting part (8) faces the cavity (9).

4. The car air vent clip according to claim 3, characterized in that... The insert groove (10) is provided with a notch (11) on the side near the cavity (9) for the insert part (8) to spring back.

5. The car air vent clip according to claim 1, characterized in that... The clamping arm (1) is composed of a first clamping arm (12) and a second clamping arm (13). Anti-slip pads (14) are installed on the inner sides of both the first clamping arm (12) and the second clamping arm (13). A first hinge part is provided on the first clamping arm (12), and a second hinge part is provided on the second clamping arm (13). The first hinge part and the second hinge part are hinged through the hinge shaft (4).

6. The car air vent clip according to claim 5, characterized in that... The first hinge portion is provided with a first hinge piece (15), a third hinge piece (16), a sixth hinge piece (17), and an eighth hinge piece (18) in sequence. The second hinge portion is provided with a second hinge piece (19), a fourth hinge piece (20), a fifth hinge piece (21), and a seventh hinge piece (22). After assembly, the second hinge piece (19) is inserted between the first hinge piece (15) and the third hinge piece (16), and the third hinge piece (16) is inserted between the second hinge piece (19) and the fourth hinge piece (20). Similarly, the sixth hinge piece (17) is inserted between the fifth hinge piece (21) and the seventh hinge piece (22), and the seventh hinge piece (22) is inserted between the sixth hinge piece (17) and the eighth hinge piece (18).

7. The car air vent clip according to claim 5, characterized in that... A washer (23) is provided between the locking knob (2) and the clamping arm (1). When the locking knob (2) is tightened, the locking knob (2) presses the washer (23) against the clamping arm (1). A torsion spring (24) for opening the first clamping arm (12) and the second clamping arm (13) is installed on the hinge shaft (4). A limiting ring (25) is installed on the connecting rod (3). One side of the limiting ring (25) abuts against the torsion spring (24) or the hinge shaft (4), and the other end abuts against the washer (23).

8. The car air vent clip according to claim 5, characterized in that... The front end of the first clamping arm (12) is provided with a first limiting groove (121) and a first limiting protrusion (122), and the front end of the second clamping arm (13) is provided with a second limiting protrusion (131) and a second limiting groove (132) corresponding to the first limiting groove (121) and the first limiting protrusion (122); a first notch (26) is provided between the first limiting groove (121) and the first limiting protrusion (122), and a second notch (27) is provided between the second limiting protrusion (131) and the second limiting groove (132).

9. The car air vent clip according to claim 5, characterized in that... Both the first clamping arm (12) and the second clamping arm (13) are provided with baffles (28) on their outer sides.

10. The car air vent clip according to claim 1, characterized in that... The locking knob (2) has a knob mark (29) on its rear end face.

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