A self-locking mobile phone holder based on ratchet engagement

Abstract

The invention discloses a self-locking mobile phone holder based on ratchet engagement, which comprises an inner bracket and two symmetrically arranged clamping rods, the clamping rod is an "L"-shaped clamping rod comprising a transverse support arm and a vertical clamping arm, the two transverse support arms are respectively inserted into the inner bracket from the left and right sides, a clamping tension spring is connected between the two transverse support arms, an intermediate gear is passed through the inner bracket, a spur rack is formed at the end of the transverse support arm, the intermediate gear is located between the two spur racks, a ratchet is provided at the bottom of the intermediate gear, a swing arm is provided at the bottom of the inner bracket, the first end of the swing arm is rotatably connected to the inner bracket, the second end of the swing arm extends to the side of the ratchet, a buckle protruding outward is formed on the side of the swing arm, and a locking spring for driving the swing arm to swing in the direction of the ratchet is provided between the swing arm and the inner bracket. The invention can self-lock in a corresponding position after opening, and automatically implement a clamping action after being triggered, so that it is convenient to use and easy to operate.

Description

Technical Field

[0001] The invention relates to a mobile phone holder, in particular to a self-locking mobile phone holder based on ratchet engagement. Background Art

[0002] A mobile phone holder is a device installed on a desktop, a car center console, etc., for clamping and supporting a mobile phone. In existing mobile phone holders, a clamping rod mechanism is generally provided on both sides of the mobile phone holder, and the two clamping rod mechanisms are connected by a tension spring. The elastic tension applied by the tension spring drives the two clamping rod mechanisms to move closer to each other, thereby clamping the mobile phone. However, during operation, the user needs to manually open the two clamping rod mechanisms and keep them in an open state until the mobile phone is inserted between the two clamping rod mechanisms. Due to the lack of an opening self-locking function, the use process is more troublesome, inconvenient to operate, and the user experience is poor. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a self-locking mobile phone holder based on ratchet engagement, which can self-lock in a corresponding position after opening and automatically perform a clamping action after being triggered, so as to be convenient to use and easy to operate.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0005] A self-locking mobile phone holder based on ratchet engagement, comprising an inner bracket and two symmetrically arranged clamping rods, wherein the clamping rod is an "L"-shaped clamping rod comprising a transverse support arm and a vertical clamping arm, the two transverse support arms are respectively inserted into the inner bracket from the left and right sides, and the transverse support arms are slidably connected to the inner bracket, a clamping tension spring is connected between the two transverse support arms, an intermediate gear is passed through the inner bracket, a spur rack is formed at the end of the transverse support arm, the intermediate gear is located between the two spur racks, and the two spur racks are meshed with the intermediate gear, a ratchet is provided at the bottom of the intermediate gear, a swing arm is provided at the bottom of the inner bracket, and the first end of the swing arm is rotatably connected to the inner bracket The second end of the swing arm extends toward the side of the ratchet, and a buckle protruding outward is formed on the side of the swing arm. A locking spring for driving the swing arm to swing toward the ratchet direction is provided between the swing arm and the inner bracket; when the two clamping rods are pulled outward, the intermediate gear and the ratchet are driven to rotate by two spur racks, and when the two clamping rods stop being pulled, the elastic force applied by the locking spring drives the buckle to engage in the ratchet teeth of the ratchet, thereby positioning the two clamping rods at corresponding positions; when external force drives the swing arm to swing outward, the buckle is separated from the ratchet teeth of the ratchet, and the two clamping rods are driven to approach each other and perform a clamping action by the elastic tension applied by the clamping tension spring.

[0006] Preferably, the middle of the inner bracket bulges upward to form a convex cap, and side openings are respectively opened on both sides of the convex cap. The intermediate gear is located inside the convex cap, and both sides of the intermediate gear are respectively located in the two side openings.

[0007] Preferably, a central shaft is formed on the inner side of the convex cap, and the intermediate gear is sleeved on the central shaft and the two are rotatably connected.

[0008] Preferably, the diameter of the ratchet wheel is larger than the diameter of the intermediate gear.

[0009] Preferably, two clamping tension springs are connected between the two transverse support arms, and the two clamping tension springs are respectively arranged on both sides of the transverse support arms.

[0010] Preferably, a clamping mechanism for clamping the automobile air outlet grille is formed at the bottom of the bottom shell.

[0011] Preferably, the clamping mechanism includes a screw, a bearing block, two clamping jaws and a locking nut, support frames are formed on both sides of the bearing block, the screw passes through the bearing block, a transverse axis is passed through the lower end of the screw, two hinge parts are formed on the inner side of the upper end of the clamping jaw, the two ends of the transverse axis pass through the hinge parts of the two clamping jaws respectively, an inclined surface is formed on the top of the clamping jaw, the inclined surface gradually slopes downward from the outer side of the clamping jaw to the inner side, and the inclined surface is aligned with the bottom of the bearing block, the locking nut is located above the bearing block, the locking nut is sleeved on the screw and the two are screwed together; the upper end of the bearing block The surface is formed with upper teeth distributed in a ring shape, and a pressure ring is provided on the screw, and the pressure ring is located between the locking nut and the bearing block. The lower end surface of the pressure ring is formed with lower teeth distributed in a ring shape, and the upper teeth and the lower teeth are aligned with each other; when the locking nut is screwed upward, the locking nut is separated from the pressure ring, and the supporting position of the support frame is adjusted by rotating the bearing block; when the locking nut is screwed downward, the locking nut applies pressure to the pressure ring and the bearing block, and the upper teeth and the lower teeth are clamped with each other, and the two jaws are driven to perform the clamping action by the cooperation of the bearing block and the inclined surface.

[0012] Preferably, a receiving recess is provided on the top of the bearing block, the upper teeth are located at the bottom of the receiving recess, and the pressure ring is disposed in the receiving recess.

[0013] Preferably, the accommodating recess is a circular recess, and the pressing ring is a circular pressing ring.

[0014] Preferably, an elastic member for driving the two clamping jaws to open is sandwiched between the two clamping jaws.

[0015] In the self-locking mobile phone holder based on ratchet engagement disclosed by the present invention, when the user needs to clamp the mobile phone, the two clamping rods can be manually driven to open, and the elastic tension applied by the clamping tension spring can be overcome at the same time. In the process of the clamping rods opening outward, the intermediate gear and the ratchet are driven to rotate by two spur racks, so that the ratchet slides relative to the buckle. When the two clamping rods are opened to the corresponding positions, the buckle is driven to engage in the ratchet teeth of the ratchet by the elastic force applied by the locking spring, thereby positioning the two clamping rods. At this time, the mobile phone can be installed between the two clamping rods, and then the swing arm is driven to swing outward by applying external force, thereby driving the buckle to separate from the ratchet teeth of the ratchet. At this time, the elastic tension applied by the clamping tension spring drives the two clamping rods to move closer to each other and perform a clamping action. Based on the above-mentioned action principle, it can be seen that the present invention can self-lock in the corresponding position after the two clamping rods are opened, and automatically perform the clamping action after being triggered, which not only facilitates user use and operation, but also greatly improves user experience and product performance. Therefore, it is suitable for promotion and application in mobile phone holder products and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional picture of the self-locking mobile phone holder after clamping the mobile phone;

[0017] Figure 2 This is a side view of the self-locking mobile phone holder after clamping the mobile phone;

[0018] Figure 3 A three-dimensional diagram of a self-locking mobile phone holder;

[0019] Figure 4 Decomposition of the self-locking mobile phone holder Figure 1 ;

[0020] Figure 5 It is a partial structural diagram of a self-locking mobile phone holder;

[0021] Figure 6 Decomposition of the self-locking mobile phone holder Figure 2 ;

[0022] Figure 7 Partial decomposition of the self-locking mobile phone holder Figure 2 ;

[0023] Figure 8 Partial decomposition of the self-locking mobile phone holder Figure 2 ;

[0024] Fig. 9 is a three-dimensional diagram of a roller clamping rod mechanism;

[0025] Fig.10 Decomposition of roller clamping rod mechanism Figure 1 ;

[0026] Fig.11 Decomposition of roller clamping rod mechanism Figure 2 ;

[0027] Fig.12 is a three-dimensional diagram of the clamping mechanism;

[0028] Fig.13 is an exploded view of the clamping mechanism;

[0029] Fig.14 is a cross-sectional view of the clamping mechanism;

[0030] Fig.15 This is the structural diagram of the bearing block and the pressure ring. DETAILED DESCRIPTION

[0031] The present invention is described in more detail below with reference to the accompanying drawings and embodiments.

[0032] Embodiment 1

[0033] This embodiment proposes a self-locking mobile phone holder based on ratchet engagement, combined with Figures 1 to 15 As shown, it includes an inner bracket 14 and two symmetrically arranged clamping rods 2, the clamping rod 2 is an "L"-shaped clamping rod including a transverse support arm 20 and a vertical clamping arm 21, the two transverse support arms 20 are respectively inserted into the inner bracket 14 from the left and right sides, and the transverse support arms 20 are slidably connected to the inner bracket 14, a clamping tension spring 201 is connected between the two transverse support arms 20, an intermediate gear 144 is passed through the inner bracket 14, and a spur rack 200 is formed at the end of the transverse support arm 20, and the intermediate gear 144 is located between the two spur racks 200. The two spur racks 200 are meshed with the intermediate gear 144, a ratchet 145 is provided at the bottom of the intermediate gear 144, a swing arm 146 is provided at the bottom of the inner bracket 14, a first end of the swing arm 146 is rotatably connected to the inner bracket 14, a second end of the swing arm 146 extends toward the side of the ratchet 145, a buckle 147 protruding outward is formed on the side of the swing arm 146, and a locking spring 148 is provided between the swing arm 146 and the inner bracket 14 for driving the swing arm 146 to swing toward the ratchet 145.

[0034] When the two clamping rods 2 are pulled outward, the intermediate gear 144 and the ratchet 145 are driven to rotate by the two spur racks 200. When the two clamping rods 2 are stopped, the buckle 147 is driven to engage in the ratchet teeth of the ratchet 145 by the elastic force applied by the locking spring 148, thereby positioning the two clamping rods 2 at corresponding positions.

[0035] When an external force drives the swing arm 146 to swing outward, the buckle 147 is separated from the ratchet teeth of the ratchet wheel 145, and the elastic tension applied by the clamping tension spring 201 drives the two clamping rods 2 to move closer to each other and perform a clamping action.

[0036] In the above structure, when the user needs to clamp the mobile phone, the two clamping rods 2 can be manually driven to open, and at the same time, the elastic tension applied by the clamping tension spring 201 can be overcome. In the process of the clamping rod 2 opening outward, the intermediate gear 144 and the ratchet 145 are driven to rotate by the two spur racks 200, so that the ratchet 145 slides relative to the buckle 147. When the two clamping rods 2 are opened to the corresponding position, the buckle 147 is driven to engage in the ratchet teeth of the ratchet 145 by the elastic force applied by the locking spring 148, thereby positioning the two clamping rods 2. At this time, the mobile phone 100 can be installed between the two clamping rods 2, and then the swing arm 146 is driven to swing outward by applying external force, thereby driving the buckle 147 to separate from the ratchet teeth of the ratchet 145. At this time, the elastic tension applied by the clamping tension spring 201 drives the two clamping rods 2 to move closer to each other and perform a clamping action. Based on the above-mentioned action principle, it can be seen that the present invention can self-lock in the corresponding position after the two clamping rods 2 are opened, and automatically perform the clamping action after being triggered, which not only facilitates user use and operation, but also greatly improves user experience and product performance. Therefore, it is suitable for promotion and application in mobile phone holder products and has good application prospects.

[0037] In order to facilitate the application of force to the swing arm 146, in this embodiment, the first end of the swing arm 146 is formed with an L-shaped pressure arm 149 extending outward, and the L-shaped pressure arm 149 and the swing arm 146 form a "Z"-shaped structure, and the swing arm 146 is driven to swing outward by pressing the L-shaped pressure arm 149.

[0038] In order to install the swing arm 146 on the inner bracket 14 and enable the swing arm 146 to swing, in this embodiment, a swing arm shaft 150 is formed at the bottom of the inner bracket 14, and a swing arm shaft sleeve 151 is formed at the first end of the swing arm 146. The swing arm shaft sleeve 151 is sleeved on the swing arm 146 and the two are rotatably connected.

[0039] As a preferred embodiment, the locking spring 148 is a compression spring, a first spring stopper 152 is formed on the side of the swing arm 146, a second spring stopper 153 is formed on the bottom of the inner bracket 14, and the locking spring 148 is sandwiched between the first spring stopper 152 and the second spring stopper 153. The compression spring used in this embodiment can better apply elastic pressure to the swing arm 146.

[0040] In order to cooperate with the straight rack 200 above the inner bracket 14, in this embodiment, the middle of the inner bracket 14 bulges upward to form a convex cap 155, and side openings 154 are respectively opened on both sides of the convex cap 155. The intermediate gear 144 is located on the inner side of the convex cap 155, and the two sides of the intermediate gear 144 are respectively located in the two side openings 154.

[0041] As a preferred embodiment, a central shaft 156 is formed on the inner side of the convex cap 155 , and the intermediate gear 144 is sleeved on the central shaft 156 and the two are rotatably connected.

[0042] In order to ensure that the buckle 147 is reliably engaged with the ratchet 145 and can withstand greater stress, in this embodiment, the diameter of the ratchet 145 is greater than the diameter of the intermediate gear 144 .

[0043] In order to drive the two transverse arms 20 to slide stably, in this embodiment, two clamping tension springs 201 are connected between the two transverse arms 20 , and the two clamping tension springs 201 are respectively arranged on both sides of the transverse arms 20 .

[0044] As a preferred embodiment, this embodiment includes a bottom shell 13, the inner bracket 14 is fixedly connected to the bottom shell 13, a button 130 is provided on the bottom shell 13, the button 130 abuts against the end of the L-shaped pressure arm 149, and pressure is applied to the L-shaped pressure arm 149 by pressing the button 130.

[0045] Furthermore, an annular enclosure 131 is disposed on the bottom shell 13 . The annular enclosure 131 surrounds the bottom shell 13 , and the annular enclosure 131 is sandwiched between the inner bracket 14 and the bottom shell 13 .

[0046] In order to position the annular enclosure 131 , in this embodiment, a plurality of positioning blocks 134 are formed on the inner wall of the annular enclosure 131 , and a plurality of positioning slots 135 are formed at the edge of the inner bracket 14 . The positioning blocks 134 are aligned one by one with the positioning slots 135 , and the positioning blocks 134 are clamped in the positioning slots 135 .

[0047] In order to facilitate the installation and fixation of the wireless charging module, in this embodiment, a surface frame 132 is provided on the top of the inner bracket 14, and a plurality of vertical hooks 133 are formed at the bottom of the surface frame 132. The vertical hooks 133 pass through the inner bracket 14, and the vertical hooks 133 are hooked on the bottom of the inner bracket 14.

[0048] Furthermore, a wireless charging module 136 is fixed on the surface frame 132 , and a surface shell 137 is fixed on the top of the surface frame 132 , and the surface shell 137 covers the top of the wireless charging module 136 .

[0049] Combination Figures 12 to 15 As shown, in this embodiment, a clamping mechanism 6 for clamping the automobile air outlet grille is formed at the bottom of the bottom shell 13 .

[0050] Further, the clamping mechanism 6 includes a screw rod 60, a bearing block 61, two clamping jaws 62 and a locking nut 63, support frames 610 are formed on both sides of the bearing block 61, the screw rod 60 passes through the bearing block 61, a transverse axis 64 is passed through the lower end of the screw rod 60, two hinged parts 620 are formed on the inner side of the upper end of the clamping jaw 62, and the two ends of the transverse axis 64 pass through the hinged parts 620 of the two clamping jaws 62 respectively, and an inclined surface 621 is formed on the top of the clamping jaw 62, the inclined surface 621 gradually tilts downward from the outer side of the clamping jaw 62 to the inner side, and the inclined surface 621 is aligned with the bottom of the bearing block 61, and the locking nut 63 is located above the bearing block 61, and the locking nut 63 is sleeved on the screw rod 60 and the two are screwed together;

[0051] The upper end surface of the bearing block 61 is formed with an annularly distributed upper teeth 611, the screw rod 60 is sleeved with a pressure ring 65, the pressure ring 65 is located between the locking nut 63 and the bearing block 61, and the lower end surface of the pressure ring 65 is formed with an annularly distributed lower teeth 650, the upper teeth 611 and the lower teeth 650 are aligned with each other;

[0052] When the locking nut 63 is screwed upward, the locking nut 63 is separated from the pressure ring 65, and the supporting position of the support frame 610 is adjusted by rotating the bearing block 61;

[0053] When the locking nut 63 is screwed downward, the locking nut 63 applies pressure to the pressure ring 65 and the supporting block 61, the upper teeth 611 and the lower teeth 650 are clamped together, and the two clamping jaws 62 are driven to perform the clamping action through the cooperation between the supporting block 61 and the inclined surface 621.

[0054] In the above structure, when clamping the mobile phone holder, the locking nut 63 is first loosened upwards, and the bearing block 61 can be flexibly rotated at this time. Therefore, the two clamping claws 62 can be aligned with the air outlet grid first, and then the support frame 610 is rotated to the appropriate position outside the air outlet, and then the locking nut 63 is tightened downwards, and the thrust applied by the bearing block 61 to the two clamping claws 62 drives the two clamping claws 62 to clamp the grid. Compared with the prior art, the above clamping mechanism can flexibly adjust the orientation of the support frame according to the shape of the air outlet, and then match various types of air outlet grids, which better meets user needs and market demands.

[0055] In order to make the overall structure of the clamping mechanism more compact, in this embodiment, a receiving recess 612 is provided on the top of the supporting block 61 , the upper teeth 611 are located at the bottom of the receiving recess 612 , and the pressure ring 65 is disposed in the receiving recess 612 .

[0056] As a preferred embodiment, the accommodating recess 612 is a circular recess, and the pressing ring 65 is a circular pressing ring.

[0057] In order to assist in driving the two clamping jaws 62 to open, in this embodiment, an elastic member 66 for driving the two clamping jaws 62 to open is sandwiched between the two clamping jaws 62 .

[0058] Furthermore, the elastic member 66 is a torsion spring sleeved on the transverse shaft 64 .

[0059] In order to protect the air outlet grille of the automobile, in this embodiment, a soft rubber pad 622 is embedded inside the clamping jaw 62 .

[0060] In order to facilitate the user to apply torque, in this embodiment, a plurality of outwardly protruding toggle portions 630 are formed on the side of the locking nut 63 .

[0061] In this embodiment, the pressure ring 65 is preferably restricted on the screw rod 60. In order to prevent the pressure ring 65 from rotating, in this embodiment, a cut surface 600 is opened on the side of the screw rod 60, and a limiting portion 651 is formed on the inner side of the pressure ring 65. The limiting portion 651 abuts against the cut surface 600.

[0062] Embodiment 2

[0063] In actual applications, in order to clamp the mobile phone stably and reliably, the clamping rod of the mobile phone holder is generally set to an "L" shape structure. By applying elastic tension to the two clamping rods, the two clamping rods are driven to clamp the mobile phone. On this basis, in order to prevent the mobile phone from slipping out from between the two clamping rods, rubber pads are generally provided on the inner side of the clamping rod. Although such rubber pads can increase the friction with the side of the mobile phone, the stress strength is limited and the mobile phone cannot be tightly fixed. Especially in a vehicle environment, the mobile phone may still slip out, etc., making it difficult to meet user needs and market demands.

[0064] In this regard, the present embodiment proposes a roller clamping rod mechanism of a mobile phone holder that can increase the clamping force between the clamping rod and the mobile phone, can better clamp the mobile phone, can effectively prevent the mobile phone from slipping, and is convenient for loading and removing the mobile phone. Figures 9 to 11 As shown, it includes a clamp rod 2, and the clamp rod 2 is an "L"-shaped clamp rod including a horizontal support arm 20 and a vertical clamp arm 21. A swingable pendulum block 212 is provided on the inner side of the vertical clamp arm 21. A roller avoidance opening 218 is provided on the pendulum block 212. A roller bearing shaft 219 is fixed in the roller avoidance opening 218. A roller 216 is sleeved on the roller bearing shaft 219 and the two are rotatably connected. The roller 216 protrudes to the outside of the roller avoidance opening 218.

[0065] In the above mechanism, a pendulum block 212 is provided on the inner side of the vertical clamp arm 21, and a roller 216 is provided on the pendulum block 212. When a user loads or removes a mobile phone 100, the mobile phone can be loaded and unloaded more easily under the action of an external force applied by the user and based on the rolling cooperation between the mobile phone and the roller. After clamping the mobile phone, the roller 216 restricts the mobile phone 100 by utilizing the snap-fit ​​cooperation between the roller 216 and the mobile phone 100, thereby preventing the mobile phone from slipping out, so that the mobile phone holder can clamp the mobile phone more stably and reliably, thereby better meeting user needs and market demands.

[0066] In order to make the pendulum block 212 swing, in this embodiment, two swing shaft seats 210 are formed inside the vertical clamping arm 21 , a swing shaft 211 is passed between the two swing shaft seats 210 , and the swing shaft 211 passes through the pendulum block 212 and the two are rotatably connected.

[0067] Furthermore, a torsion spring 213 is sleeved on the swing shaft 211 , and two ends of the torsion spring 213 are respectively in contact with the vertical clamping arm 21 and the swing block 212 , so that the swing block 212 is driven to swing outward by the elastic force applied by the torsion spring 213 .

[0068] In the above structure, a swingable pendulum block 212 is arranged on the inner side of the vertical clamping arm 21 of the clamping rod 2, and a torsion spring 213 is sleeved on the pendulum shaft 211. The elastic force applied by the torsion spring 213 drives the pendulum block 212 to swing outward and tightly abut against the side of the mobile phone. Compared with the prior art, the present invention further increases the stress between the clamping rod and the mobile phone, thereby better clamping the mobile phone and effectively preventing the mobile phone from slipping. It is particularly suitable for application in vehicle-mounted mobile phone holder products and better meets user needs and market demands.

[0069] As a preferred embodiment, the roller 216 is a shuttle-shaped roller.

[0070] In this embodiment, the two swing shaft seats 210 are both close to the upper ends of the vertical clamping arms 21 .

[0071] In order to better engage and restrain the mobile phone, in this embodiment, the roller avoidance opening 218 is close to the upper end of the pendulum block 212 .

[0072] As a preferred embodiment, a slot 214 is provided on the swing block 212, and a smooth rubber pad 215 is fixed in the slot 214. The smooth rubber pad 215 can better adhere to the mobile phone 100.

[0073] As a preferred embodiment, the smooth rubber pad 215 is located below the roller 216 .

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-locking mobile phone holder based on ratchet engagement, characterized in that: The invention comprises an inner bracket (14) and two symmetrically arranged clamping rods (2), wherein the clamping rod (2) is an "L"-shaped clamping rod comprising a transverse support arm (20) and a vertical clamping arm (21), the two transverse support arms (20) are respectively inserted into the inner bracket (14) from the left and right sides, and the transverse support arms (20) are slidably connected to the inner bracket (14), a clamping tension spring (201) is connected between the two transverse support arms (20), an intermediate gear (144) is passed through the inner bracket (14), a spur rack (200) is formed at the end of the transverse support arm (20), the intermediate gear (144) is located between the two spur racks (200), and the two Each spur rack (200) is meshed with the intermediate gear (144); a ratchet (145) is provided at the bottom of the intermediate gear (144); a swing arm (146) is provided at the bottom of the inner bracket (14); a first end of the swing arm (146) is rotatably connected to the inner bracket (14); a second end of the swing arm (146) extends toward the side of the ratchet (145); a buckle (147) protruding outward is formed on the side of the swing arm (146); a locking spring (148) is provided between the swing arm (146) and the inner bracket (14) for driving the swing arm (146) to swing toward the ratchet (145); When the two clamping rods (2) are pulled outward, the intermediate gear (144) and the ratchet wheel (145) are driven to rotate through the two spur racks (200); when the two clamping rods (2) stop being pulled, the buckle (147) is driven to engage in the ratchet teeth of the ratchet wheel (145) by the elastic force applied by the locking spring (148), thereby positioning the two clamping rods (2) at corresponding positions; When an external force drives the swing arm (146) to swing outward, the buckle (147) is separated from the ratchet teeth of the ratchet wheel (145), and the elastic tension applied by the clamping tension spring (201) drives the two clamping rods (2) to move closer to each other and perform a clamping action; The first end of the swing arm (146) is formed with an L-shaped pressing arm (149) extending outward, and the L-shaped pressing arm (149) and the swing arm (146) form a "Z"-shaped structure, and the swing arm (146) is driven to swing outward by pressing the L-shaped pressing arm (149); The invention comprises a bottom shell (13), the inner bracket (14) being fixedly connected to the bottom shell (13), a button (130) being provided on the bottom shell (13), the button (130) being in contact with the end of the L-shaped pressure arm (149), and pressure is applied to the L-shaped pressure arm (149) by pressing the button (130).

2. The ratchet-engaged self-locking mobile phone holder according to claim 1, characterized in that: The middle of the inner bracket (14) bulges upward to form a convex cap (155), and two sides of the convex cap (155) are respectively provided with side openings (154), the intermediate gear (144) is located inside the convex cap (155), and two sides of the intermediate gear (144) are respectively located in the two side openings (154).

3. The ratchet-engaged self-locking mobile phone holder according to claim 2, characterized in that: A central shaft (156) is formed on the inner side of the convex cap (155), and the intermediate gear (144) is sleeved on the central shaft (156) and the two are rotatably connected.

4. The ratchet-engaged self-locking mobile phone holder according to claim 1, characterized in that: The diameter of the ratchet wheel (145) is greater than the diameter of the intermediate gear (144).

5. The ratchet-engaged self-locking mobile phone holder according to claim 1, characterized in that: Two clamping tension springs (201) are connected between the two transverse support arms (20), and the two clamping tension springs (201) are respectively arranged on both sides of the transverse support arms (20).

6. The ratchet-engaged self-locking mobile phone holder according to claim 1, characterized in that: The bottom of the bottom shell (13) is formed with a clamping mechanism (6) for clamping the automobile air outlet grid.

7. The ratchet-based self-locking mobile phone holder according to claim 6, characterized in that: The clamping mechanism (6) comprises a screw rod (60), a bearing block (61), two clamping claws (62) and a locking nut (63); support frames (610) are respectively formed on both sides of the bearing block (61); the screw rod (60) passes through the bearing block (61); a transverse axis (64) is passed through the lower end of the screw rod (60); two hinged parts (620) are formed on the inner side of the upper end of the clamping claw (62); and two ends of the transverse axis (64) are respectively passed through A hinge portion (620) passes through two clamping jaws (62), a top of the clamping jaw (62) is formed with an inclined surface (621), the inclined surface (621) gradually slopes downward from the outside to the inside of the clamping jaw (62), and the inclined surface (621) is aligned with the bottom of the bearing block (61), the locking nut (63) is located above the bearing block (61), and the locking nut (63) is sleeved on the screw rod (60) and the two are screwed together; The upper end surface of the bearing block (61) is formed with upper teeth (611) distributed in an annular shape, the screw rod (60) is sleeved with a pressure ring (65), the pressure ring (65) is located between the locking nut (63) and the bearing block (61), the lower end surface of the pressure ring (65) is formed with lower teeth (650) distributed in an annular shape, and the upper teeth (611) and the lower teeth (650) are aligned with each other; When the locking nut (63) is screwed upward, the locking nut (63) is separated from the pressure ring (65), and the supporting position of the support frame (610) is adjusted by rotating the bearing block (61); When the locking nut (63) is screwed downward, the locking nut (63) applies pressure to the pressure ring (65) and the supporting block (61), the upper teeth (611) and the lower teeth (650) are clamped together, and the two clamping jaws (62) are driven to perform a clamping action through the cooperation between the supporting block (61) and the inclined surface (621).

8. The ratchet-engaged self-locking mobile phone holder according to claim 7, characterized in that: The top of the bearing block (61) is provided with a receiving recess (612), the upper teeth (611) are located at the bottom of the receiving recess (612), and the pressure ring (65) is arranged inside the receiving recess (612).

9. The ratchet-engaged self-locking mobile phone holder according to claim 8, characterized in that: The accommodating recess (612) is a circular recess, and the pressing ring (65) is a circular pressing ring.

10. The ratchet-engaged self-locking mobile phone holder according to claim 9, characterized in that: An elastic member (66) is disposed between the two clamping jaws (62) and is used to drive the two clamping jaws (62) to open.

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