Clamping support

Abstract

The utility model relates to a clamping support which comprises a base, a transmission connecting rod, an elastic piece and a driving mechanism, in the switching process of an opening state and a closing state of the clamping support, the elastic piece is always in the state of providing elastic force, and the elastic piece is driven by the driving mechanism. The elastic piece is made to change the positions of the force application point of the elastic piece and the clamping ends relative to the rotating shaft in the switching process between the first position and the second position, so that when the elastic piece is located at the first position and the second position, clamping force enabling the two clamping ends to be close to each other is provided, or acting force enabling the two clamping ends to be away from each other is provided. Therefore, automatic opening and closing of the clamping support can be achieved only by changing the position of the elastic piece, use is convenient, due to the fact that the elastic piece cannot completely release elastic potential energy, a user does not need to store force for the elastic piece, the operation force and operation difficulty when the clamping support is used are reduced, and use experience can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic devices and their auxiliary accessories, and in particular to a clamping bracket. Background Technology

[0002] Currently, mobile phones, tablets, and other products on the market typically use elastic clamping for fixing or resetting. For example, a holder with clamping function includes a clamping component for holding the product and an elastic component that provides elastic force. In one scenario, after the elastic component releases its elastic potential energy, the clamping component automatically opens, releasing the product from its grip. However, after the elastic potential energy of the elastic component is released, manual resetting is required. In another scenario, after the elastic component releases its elastic potential energy, the clamping component automatically closes and clamps the product. Again, the problem of manual resetting after the elastic potential energy of the elastic component is released remains.

[0003] It is evident that the elastic components in conventional clamping brackets require manual reset after releasing their elastic potential energy, which is difficult to operate, affects the convenience of using the bracket, and results in a poor user experience. Utility Model Content

[0004] Therefore, it is necessary to provide a clamping bracket that can open and close automatically, making operation more convenient and improving the user experience.

[0005] This utility model provides a clamping bracket, including a base, transmission links, elastic elements, and a driving mechanism. Two transmission links are provided, symmetrically arranged, and rotatably connected to the base via a rotating shaft. One end of each transmission link is a clamping end. Both ends of the elastic element are movably connected to the transmission links. The elastic element has a first position and a second position. The elastic element is configured such that, when in the first position, the connection point between the elastic element and the transmission links is on the same side of the rotating shaft as the clamping end; when in the second position, the connection point between the elastic element and the transmission links is on opposite sides of the rotating shaft as the clamping end. When the elastic element is in one of the first and second positions, it provides an elastic force that brings the two clamping ends closer together; when the elastic element is in the other position, it provides an elastic force that moves the two clamping ends away from each other. The driving mechanism is connected to the elastic element and is used to drive the elastic element to switch between the first and second positions.

[0006] During the switching between the open and closed states, the elastic element of the clamping bracket provided in this application is always in a state of providing elastic force. By driving the elastic element through the drive mechanism, the position of the force application point of the elastic element relative to the rotation axis of the clamping end changes during the switching between the first position and the second position. This allows the elastic element to provide a clamping force that brings the two clamping ends together or a force that moves the two clamping ends apart when it is in the first position and the second position, respectively. Thus, the clamping bracket can be automatically opened and closed simply by changing the position of the elastic element, which is quite convenient to use.

[0007] In one embodiment, the drive mechanism includes two drive pins, and the two ends of the elastic element are respectively connected to the two drive pins. The transmission link has a groove, and the drive pin is slidably connected in the groove. When the drive pin moves to the two ends of the groove, the elastic element is respectively located at the first position or the second position.

[0008] In one embodiment, the drive mechanism includes an operating part, two transmission gears, two sector wheels, and a transmission rack. The operating part is connected to the transmission rack and is movable relative to the base. The transmission rack has meshing teeth on both opposite sides. The two transmission gears are located on opposite sides of the transmission rack and mesh with it. The circumference of each sector wheel meshes with the circumference of one of the transmission gears. The transmission pin is connected to the sector wheel and is eccentrically positioned relative to the rotation center of the sector wheel.

[0009] Alternatively, the drive mechanism includes an operating part, a drive gear, two transmission gears, and two sector wheels. The operating part is connected to the drive gear and is rotatable relative to the base. The circumferences of the two transmission gears mesh with each other. The circumference of the drive gear meshes with the circumference of one of the transmission gears. The circumference of each sector wheel meshes with the circumference of one of the transmission gears. The transmission pin is connected to the sector wheel and is eccentrically positioned relative to the rotation center of the sector wheel.

[0010] Alternatively, the drive mechanism includes an operating part, an operating link, and two transition links. The operating part is connected to the operating link and is movable relative to the base. One end of each transition link is connected to a transmission pin, and the other end is rotatably connected to the operating link. The two transition links are rotatably connected to the two ends of the operating link, respectively.

[0011] Alternatively, the drive mechanism includes an operating part, a transmission base, and two transmission sliders. The operating part is connected to the transmission base, the transmission base is movable relative to the base, and both transmission sliders are slidably connected to the transmission base. Each transmission slider is connected to a transmission pin.

[0012] In one embodiment, the clamping bracket further includes two clamping arms, each of which is connected to the clamping end of one of the transmission links.

[0013] In one embodiment, the base includes a base plate and a cover plate, the transmission linkage and the drive mechanism are mounted between the base plate and the cover plate, and the clamping arm is mounted on the side of the base plate facing away from the cover plate.

[0014] In one embodiment, the clamping arm is slidably connected to the base, the clamping end is provided with a transmission groove, and one end of the clamping arm is provided with a sliding pin, which is slidably disposed in the transmission groove.

[0015] In one embodiment, the base further includes a limiting groove, and the sliding pin is slidably connected in the limiting groove. When the elastic element is in the first position or the second position, the sliding pin moves to the end of the limiting groove.

[0016] In one embodiment, the drive mechanism includes an operating part, a transmission seat, and two transmission sliders. The operating part is connected to the transmission seat, the transmission seat is movable relative to the base, and the two transmission sliders are slidably connected to the transmission seat. Each transmission slider is connected to a transmission pin.

[0017] The direction of movement of the transmission seat relative to the base is parallel to the extension direction of the limiting groove, and the extension direction of the limiting groove is perpendicular to the direction of movement of the transmission slider relative to the transmission seat.

[0018] In one embodiment, the drive mechanism includes an operating part, a transmission seat, and two transmission sliders. The operating part is connected to the transmission seat, the transmission seat is movable relative to the base, and the two transmission sliders are slidably connected to the transmission seat. Each transmission slider is connected to a transmission pin.

[0019] The rotating shaft and the sliding groove are respectively disposed on opposite sides of the transmission connecting rod, the transmission slider is located between the transmission connecting rod and the transmission seat, and the transmission pin is located between the transmission slider and the transmission connecting rod.

[0020] In one embodiment, the base has two side-by-side moving channels, and the transmission link is disposed in the moving channel. When the elastic element is in the first position or the second position, the clamping end of the transmission link or the end of the transmission link away from the clamping end abuts against the inner wall of the moving channel. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 A schematic diagram of a clamping bracket provided in an embodiment of this application;

[0023] Figure 2 This is an exploded view of a clamping bracket provided in one embodiment of this application;

[0024] Figure 3 This is a schematic diagram showing the interaction between the elastic element and the transmission link in the first and second positions, respectively.

[0025] Figure 4 Schematic diagrams of different embodiments of the drive mechanism;

[0026] Figure 5 Schematic diagram for other embodiments of the drive mechanism;

[0027] Figure 6 Schematic diagram of some embodiments of the clamping bracket behind the concealed cover;

[0028] Figure 7 for Figure 6 Sectional view along the middle AA direction;

[0029] Figure 8 for Figure 6 A schematic diagram showing the hidden transmission seat in the middle;

[0030] Figure 9 This is a schematic diagram showing the interaction between the transmission link, the elastic element, the transmission slider, and the clamping arm when the elastic element is in the first and second positions, respectively.

[0031] Figure label:

[0032] Base 100, limiting groove 110, base plate 120, cover plate 130, moving channel 140; transmission link 200, clamping end 210, rotating shaft 220, sliding groove 230, transmission groove 240; elastic element 300; drive mechanism 400, transmission pin 410, operating part 420, transmission gear 430, sector wheel 440, transmission rack 450, drive gear 460, operating link 470, connecting link 480, transmission seat 490, transmission slider 401; clamping arm 500, clamping part 510, sliding pin 520. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In traditional technology, clamping brackets mainly use elastic clamping to hold and fix products. Compared with gravity clamping, this can provide a more stable and reliable clamping force. Although the clamping bracket is equipped with elastic components that can provide elastic force, after the elastic force of the elastic component is released, the user needs to manually store the force in the elastic component. This process requires the user to apply considerable force to overcome the elastic force of the elastic component and restore it to the elastic state before the force was released. This makes the operation difficult, resulting in inconvenience in using the clamping bracket and a poor user experience.

[0038] Reference Figure 1 and Figure 2 This utility model provides a clamping bracket that provides clamping force to products such as mobile phones, tablets, and computers, keeping the products in a fixed position. The clamping bracket includes a base 100 and two symmetrically arranged transmission rods 200. One end of each transmission rod 200 is a clamping end 210. The transmission rod 200 is rotatably connected to the base 100 based on a rotating shaft 220. The two transmission rods 200 can rotate to bring the two clamping ends 210 closer together or further apart. The clamping bracket can directly clamp the product using the two clamping ends 210, or the clamping ends 210 can be connected to other clamping structures, which move closer or further apart synchronously with the clamping ends 210, thus clamping the product. The clamping structure is not limited to a clamping arm formed by a single link or multiple links, or a clamping arm formed by a guide rail slider structure. For example, when the clamping arm is set as a guide rail slider structure, the slider structure moves with the rotation of the transmission link 200. When the clamping ends 210 come together, the slider structure moves closer to each other and clamps the product. When the clamping ends 210 move away from each other, the slider structure moves away synchronously and releases the product.

[0039] Understandably, when the two transmission links 200 tend to move closer together, the clamping bracket is in the closed state or switches to the closed state. When the clamping bracket is in the closed state, it provides clamping force to the product, and the product is clamped and keeps its position stable. When the two transmission links 200 tend to move away from each other, the clamping bracket is in the open state or switches to the open state. When the clamping bracket is in the open state, the clamping force on the product is released, and the product can be removed from the clamping bracket.

[0040] Reference Figure 2 and Figure 3 The clamping bracket also includes an elastic element 300, the two ends of which are movably connected to the transmission link 200. The elastic force applied by the elastic element 300 to the transmission link 200 provides a force for the clamping ends 210 to move closer or further apart. The movement of the elastic element 300 relative to the transmission link 200 gives the elastic element 300 a first position and a second position. (Refer to...) Figure 3In Figure (a), when the elastic element 300 is in the first position, the connection position between the elastic element 300 and the transmission link 200 is on the same side of the rotating shaft 220 as the clamping end 210. When the elastic element 300 moves relative to the transmission link 200 to switch to the second position, refer to... Figure 3 In Figure (b), the connection position of the elastic element 300 and the transmission link 200 and the clamping end 210 are respectively located on opposite sides of the rotating shaft 220. It should be noted that "located on the same side of the rotating shaft 220" means the same side of the rotating shaft 220 along the extension direction of the transmission link 200, and "located on opposite sides of the rotating shaft 220" means opposite sides of the rotating shaft 220 along the extension direction of the transmission link 200.

[0041] When the elastic element 300 is in one of the first and second positions, the position where the transmission link 200 is subjected to the elastic force and the position where the force is applied to the product (i.e., the clamping end 210) are located on the same side of the rotating shaft 220. Based on the lever principle, the elastic element 300 provides an elastic force that brings the two clamping ends 210 closer together. At this time, the clamping bracket is in the closed state and provides clamping force to the product. When the elastic element 300 is in the other of the first and second positions, the position where the transmission link 200 is subjected to the force and the position where the force is applied are located on opposite sides of the rotating shaft 220. Based on the lever principle, the elastic element 300 provides an elastic force that moves the two clamping ends 210 away from each other. At this time, the clamping bracket is in the open state and the product is released.

[0042] Reference Figure 2 The clamping bracket also includes a drive mechanism 400, which can be installed on the base 100. The drive mechanism 400 is connected to the elastic element 300 and is used to drive the elastic element 300 to switch between a first position and a second position. In this way, the user can switch the clamping bracket between an open state and a closed state by operating the drive mechanism 400.

[0043] As can be seen from the above, in this utility model, during the switching between the open and closed states of the clamping bracket, the elastic element 300 is always in a state of providing elastic force. By driving the elastic element 300 through the drive mechanism 400, the elastic element 300 changes the position of the force application point of the elastic element 300 and the position of the clamping end 210 relative to the rotating shaft 220 during the switching between the first position and the second position. This allows the elastic element 300 to provide a clamping force that brings the two clamping ends 210 closer together or to provide a force that moves the two clamping ends 210 away from each other when it is in the first position and the second position, respectively. Thus, the automatic opening and closing of the clamping bracket can be achieved simply by changing the position of the elastic element 300, which is quite convenient to use.

[0044] In addition, during the switching between the open and closed states of the clamping bracket, the elastic element 300 is always in a state of providing elastic force. The elastic element 300 does not completely release its elastic potential energy, so the user does not need to charge the elastic element 300, which reduces the operating force and difficulty when using the clamping bracket and can effectively improve the user experience.

[0045] Understandably, the implementation of the transmission link 200 based on the rotatable connection between the rotating shaft 220 and the base 100 is not limited to the following: the base 100 has a shaft hole, the rotating shaft 220 is connected to the transmission link 200, the rotating shaft 220 passes through the shaft hole and can rotate within the shaft hole; or, the transmission link 200 has a shaft hole, the rotating shaft 220 is connected to the base 100, the rotating shaft 220 passes through the shaft hole and can rotate within the shaft hole. The position of the rotating shaft 220 remains unchanged. Therefore, the transmission link 200 rotates relative to the base 100 based on a fixed rotation center. The movement trajectory of the clamping end 210 is an arc formed with the position of the rotating shaft 220 as the center and the distance between the clamping end 210 and the rotating shaft 220 as the radius. The clamping end 210 is always located on one side of the rotating shaft 220 along the extension direction of the transmission link 200. When the elastic element 300 switches between the first position and the second position, the connection position between the elastic element 300 and the transmission link 200 will move from one side of the rotating shaft 220 along the transmission link 200 to the other side of the rotating shaft 220 along the transmission link 200. This allows the force-bearing position and the force-applying position of the transmission link 200 to be located on the same side of the rotating shaft 220, or on opposite sides of the rotating shaft 220, so that the clamping ends 210 move closer to each other or further apart, thereby realizing the automatic opening and closing of the clamping bracket.

[0046] In this invention, the elastic element 300 is located between the two transmission links 200. The elastic element 300 can be configured as a tension spring or a compression spring, that is, the elastic element 300 can always provide tension or thrust to the force-bearing position of the transmission link 200. Taking the elastic element 300 as a tension spring as an example, such as... Figure 3As shown, the force-bearing position of the transmission link 200 is always subjected to the tension applied by the elastic element 300. When the elastic element 300 is in the first position, the connection position between the elastic element 300 and the transmission link 200 and the clamping end 210 is on the same side of the rotating shaft 220. At this time, the elastic element 300 provides an elastic force that brings the two clamping ends 210 closer together. When the elastic element 300 is in the second position, the connection position between the elastic element 300 and the transmission link 200 and the clamping end 210 are on opposite sides of the rotating shaft 220. At this time, the elastic element 300 provides an elastic force that moves the two clamping ends 210 away from each other. Similarly, if the elastic element 300 is configured as a compression spring, the force-bearing position of the transmission link 200 is always subjected to the thrust applied by the elastic element 300. When the elastic element 300 is in the first position, the connection position between the elastic element 300 and the transmission link 200 and the clamping end 210 are located on opposite sides of the rotating shaft 220. At this time, the elastic element 300 provides an elastic force that makes the two clamping ends 210 move away from each other. When the elastic element 300 is in the second position, the connection position between the elastic element 300 and the transmission link 200 and the clamping end 210 are located on the same side of the rotating shaft 220. At this time, the elastic element 300 provides an elastic force that makes the two clamping ends 210 move closer to each other.

[0047] The direction of movement of the elastic element 300 relative to the transmission link 200 is not limited to horizontal or vertical. Taking an example where the elastic element 300 can move vertically relative to the transmission link 200, and the elastic element 300 is configured as a tension spring with the clamping end 210 located at the lower end of the transmission link 200, the first position is located below the second position. (Refer to...) Figure 3 When the elastic element 300 is in the first position, both the elastic element 300 and the clamping end 210 are located below the rotating shaft 220. The force application and receiving positions of the transmission link 200 are both below the rotating shaft 220. At this time, the clamping end 210 is brought closer together by the elastic force of the elastic element 300, the clamping bracket is in a closed state, and it provides clamping force to the product. When the elastic element 300 moves upward, it gradually moves from the first position to the second position. Under the action of the elastic force of the elastic element 300, the transmission link 200 rotates relative to the base 100 based on the rotating shaft 220. When the elastic element 300 is still below the rotating shaft 220, the two clamping ends 210 remain close to each other. When the elastic element 300 moves above the rotating shaft 220, since the force-bearing position of the transmission link 200 is above the rotating shaft 220 and the force-applying position of the transmission link 200 is below the rotating shaft 220, the two clamping ends 210 switch to a tendency to move away from each other. When the elastic element 300 continues to move upward to the second position, the two clamping ends 210 are at their maximum distance from each other. At this time, the clamping bracket is in the open state and the product is released.

[0048] Of course, the clamping end 210 can also be located at the upper end of the transmission link 200. Taking the elastic element 300 as a tension spring as an example, the first position is located above the second position. When the elastic element 300 is in the first position, both the elastic element 300 and the clamping end 210 are located above the rotating shaft 220. The clamping end 210 is brought closer together by the elastic force of the elastic element 300, the clamping bracket is in the closed state, and it provides clamping force to the product. When the elastic element 300 moves from top to bottom, the elastic element 300 gradually moves from the first position to the second position. When the elastic element 300 moves to the second position, the force-bearing position of the transmission link 200 is located below the rotating shaft 220, and the force-applying position of the transmission link 200 is located above the rotating shaft 220. At this time, the two clamping ends 210 move away from each other, the clamping bracket is in the open state, and the product is released.

[0049] Understandably, when the elastic element 300 switches between the first position and the second position, the transmission link 200 is driven by the elastic force of the elastic element 300 to rotate relative to the base 100. In a single switching process, the rotation direction of the transmission link 200 remains unchanged. In addition, the rotation direction of the elastic element 300 during the switching process from the first position to the second position is opposite to the rotation direction during the switching process from the second position to the first position.

[0050] It should be noted that when the elastic element 300 switches between the first position and the second position, both ends of the elastic element 300 move synchronously. At any time, both ends of the elastic element 300 are at the same height, so that the elastic forces on the two transmission links 200 are the same in magnitude and opposite in direction. The two sides of the product can be subjected to balanced clamping forces, making the clamping bracket clamp the product more stable and reliable.

[0051] In one embodiment, reference is made to Figure 2 and Figure 3 The drive mechanism 400 includes two drive pins 410. The two ends of the elastic member 300 are respectively connected to the two drive pins 410. The transmission link 200 has a slide groove 230. The drive pins 410 are slidably connected in the slide groove 230. When the elastic member 300 switches between the first position and the second position, the drive pins 410 slide along the slide groove 230 and abut against the side wall of the slide groove 230. Through the pushing action of the drive pins 410 on the side wall of the slide groove 230, the transmission link 200 rotates following the position change of the elastic member 300, so that the two clamping ends 210 move closer or further apart. When the drive pins 410 move to the two ends of the slide groove 230, the elastic member 300 is located in the first position or the second position respectively. The slide groove 230 can limit the movement distance of the drive pins 410 and limit the drive pins 410, so that the elastic member 300 can be stabilized in the first position or the second position, and the clamping bracket can remain stable in the open and closed states.

[0052] Specifically, taking the elastic element 300 as a tension spring as an example, the elastic element 300 is located between the two transmission links 200. The force-bearing positions of the two transmission links 200 are always subjected to the tension applied by the elastic element 300. When the transmission pin 410 moves to the end of the slide groove 230, the transmission pin 410 abuts against the inner peripheral wall of the slide groove 230. The holding force applied by the inner wall of the slide groove 230 to the transmission pin 410 is the same in magnitude and opposite in direction to the tension applied by the elastic element 300, so that the transmission pin 410 can maintain a stable position at the end of the slide groove 230, thereby the elastic element 300 can be stabilized in the first position or the second position.

[0053] like Figure 2 In the illustrated embodiment, the slide 230 is configured to extend along the extension direction of the transmission link 200 to fully utilize the space along the length of the transmission link 200, simplify the movement trajectory of the transmission pin 410, and improve the ease of operation of the clamping bracket. Furthermore, as the transmission pin 410 moves from the center of the slide 230 towards both ends, the two clamping ends 210 are either approaching or moving away from each other. The closer the transmission pin 410 is to the end of the slide 230, the greater the degree of approaching or moving away between the two clamping ends 210. The moment the transmission pin 410 moves to the center of the slide 230 is the node at which the two clamping ends 210 begin to switch between approaching and moving away. By placing the rotating shaft 220 at the center of the slide 230, the movement path of the transmission pin 410 is equal in both the approaching and moving away states of the two clamping ends 210, thereby optimizing the ease of operation and feel of the clamping bracket.

[0054] It should be noted that the drive mechanism 400 can be connected to an external control module. The control module includes a control knob and a power component. The power component is connected to the drive mechanism 400 and provides power for the movement of the drive mechanism 400. The power component is not limited to being a motor, servo motor, etc., and the control knob is not limited to being a button, knob, etc. The control knob can be triggered by pressing, rotating, touching, etc. When the user performs the corresponding operation on the control knob, the power component drives the drive mechanism 400 to move according to the command of the control knob, thereby causing the elastic element 300 to switch between the first position and the second position, realizing the automatic opening and closing of the clamping bracket.

[0055] Of course, users can also directly control the drive mechanism 400 to make the drive mechanism 400 drive the elastic element 300 to move. The control method of the drive mechanism 400 is not limited to sliding, rotating, etc.

[0056] Specifically, such as Figure 4In the embodiment shown in Figure (c), the drive mechanism 400 includes an operating part 420, two transmission gears 430, two sector wheels 440, and a transmission rack 450. The operating part 420 is connected to the transmission rack 450 and can move relative to the base 100. The transmission rack 450 has meshing teeth on both opposite sides. The two transmission gears 430 are located on opposite sides of the transmission rack 450 and mesh with the meshing teeth on the side of the transmission rack 450. The circumference of each sector wheel 440 meshes with the circumference of one transmission gear 430. The two sector wheels 440 are symmetrically arranged on opposite sides of the two transmission gears 430. The transmission pin 410 is connected to the sector wheel 440 and is eccentrically arranged relative to the rotation center of the sector wheel 440. When the user pushes the operating part 420 to move relative to the base 100, the transmission rack 450 moves synchronously with the operating part 420, and the two transmission gears 430 rotate synchronously with the movement of the transmission rack 450. The two transmission gears 430 rotate at the same speed but in opposite directions. The sector wheel 440 swings with the rotation of the transmission gears 430, and the two sector wheels 440 swing in the same direction. The transmission pin 410 moves along the slide groove 230 with the swing of the sector wheel 440, causing the two ends of the elastic element 300 to move synchronously relative to the transmission link 200. This realizes the switching of the elastic element 300 between the first position and the second position. The transmission link 200 rotates based on the rotating shaft 220 under the elastic force of the elastic element 300, causing the two clamping ends 210 to move closer or further apart. That is, the user can automatically open and close the clamping bracket by pushing the operating part 420.

[0057] Or, such as Figure 4In the embodiment shown in Figure (d), the drive mechanism 400 includes an operating part 420, a drive gear 460, two transmission gears 430, and two sector wheels 440. The operating part 420 is connected to the drive gear 460 and can rotate relative to the base 100. The peripheral sides of the two transmission gears 430 mesh with each other, and the peripheral side of one of the transmission gears 430 meshes with the peripheral side of the drive gear 460. The peripheral side of each sector wheel 440 meshes with the peripheral side of one transmission gear 430. The two sector wheels 440 are symmetrically arranged on opposite sides of the two transmission gears 430. The transmission pin 410 is connected to the sector wheel 440 and is eccentrically arranged relative to the rotation center of the sector wheel 440. When the user rotates the operating part 420, the operating part 420 rotates relative to the base 100. The drive gear 460 rotates synchronously with the operating part 420, and the two transmission gears 430 rotate synchronously with the drive gear 460. The two transmission gears 430 rotate at the same speed but in opposite directions. The sector wheel 440 swings with the rotation of the transmission gears 430, and the two sector wheels 440 swing in the same direction. The transmission pin 410 moves along the slide groove 230 with the swing of the sector wheel 440, causing the two ends of the elastic element 300 to move synchronously relative to the transmission link 200. This realizes the switching of the elastic element 300 between the first position and the second position. The transmission link 200 rotates based on the rotating shaft 220 under the elastic force of the elastic element 300, causing the two clamping ends 210 to move closer or further apart. That is, the user can automatically open and close the clamping bracket by rotating the operating part 420 relative to the base 100.

[0058] Or, such as Figure 5In the embodiment shown in Figure (e), the drive mechanism 400 includes an operating part 420, an operating link 470, and two transition links 480. The operating part 420 is connected to the operating link 470 and is movable relative to the base 100. One end of each transition link 480 is connected to a transmission pin 410, and the other end is rotatably connected to the operating link 470. The two transition links 480 are respectively rotatably connected to the two ends of the operating link 470. When the user pushes the operating part 420 to move relative to the base 100, the operating linkage 470 moves synchronously with the operating part 420. The two transition linkages 480, driven by the operating linkage 470, also move synchronously with it. This causes the transmission pin 410 to move along the slide groove 230 along with the transition linkage 480. The two ends of the elastic element 300 move synchronously relative to the transmission linkage 200, enabling the elastic element 300 to switch between a first position and a second position. When the position of the transmission pin 410 changes within the slide groove 230, the transmission linkage 200 rotates under the elastic force of the elastic element 300, causing the transition linkage 480 to rotate relative to the operating linkage 470. This allows the two clamping ends 210 to move closer together or further apart. In other words, the user can automatically open and close the clamping bracket by pushing the operating part 420.

[0059] Or, such as Figure 5 In the embodiment shown in Figure (f), the drive mechanism 400 includes an operating part 420 and two connecting rods 480. The operating part 420 is movable relative to the base 100. One end of each connecting rod 480 is connected to a transmission pin 410, and the other end is rotatably connected to the operating part 420. When the user pushes the operating part 420 to move relative to the base 100, the two connecting rods 480 move synchronously under the drive of the operating part 420, causing the transmission pin 410 to move along the slide groove 230 following the movement of the connecting rod 480. The two ends of the elastic element 300 move synchronously relative to the transmission link 200, realizing the switching of the elastic element 300 between the first position and the second position. When the position of the transmission pin 410 changes within the slide groove 230, the transmission link 200 rotates under the elastic force of the elastic element 300, causing the connecting rod 480 to rotate relative to the operating part 420, and the two clamping ends 210 can move closer to each other or further apart. That is, the user can automatically open and close the clamping bracket by pushing the operating unit 420 to move it.

[0060] Or, such as Figures 6 to 8In the embodiment shown, the drive mechanism 400 includes an operation part 420, a transmission seat 490 and two transmission sliders 401. The operation part 420 is connected to the transmission seat 490, which is movable relative to the base 100. Both transmission sliders 401 are slidably connected to the transmission seat 490, and each transmission slider 401 is connected to a transmission pin 410. When the user moves the operating unit 420, the transmission seat 490 moves synchronously relative to the base 100, following the operating unit 420. As the transmission seat 490 drives the two transmission sliders 401 to move synchronously, the two transmission pins 410 move synchronously along the slide groove 230, thereby causing the two ends of the elastic element 300 to move synchronously, realizing the switching of the elastic element 300 between the first and second positions. When the position of the transmission pins 410 changes within the slide groove 230, under the elastic force of the elastic element 300, the transmission connecting rod 200 rotates relative to the base 100 based on the rotating shaft 220, causing the transmission sliders 401 to slide relative to the transmission seat 490, and the two clamping ends 210 can move closer or further apart. In other words, the user can automatically open and close the clamping bracket by pushing the operating unit 420.

[0061] by Figures 6 to 8 Taking the drive mechanism 400 shown as an example, the elastic element 300 is set as a tension spring, the clamping end 210 is located at the lower end of the transmission link 200, and the first position is located below the second position. When the elastic element 300 is in the first position, the transmission pin 410 is located at the lower end of the slide groove 230, and the force application position and the force receiving position of the transmission link 200 are both located below the rotating shaft 220, with the two clamping ends 210 close to each other. When the user pushes the operating part 420 upward, the transmission seat 490 moves upward, and the two transmission sliders 401 follow the transmission pin 410 upward, causing both transmission pins 410 to move upward along the slide groove 230. Before the transmission pin 410 moves to the midpoint of the slide groove 230, the two transmission links 200 rotate based on the rotating shaft 220, and the distance between the two transmission pins 410 gradually increases. The transmission slider 401 slides relative to the transmission seat 490. When the transmission pin 410 moves above the midpoint of the slide groove 230, the two clamping ends 210 switch to a tendency to move away from each other. During this process, the two transmission links 200 continue to rotate based on the rotating shaft 220, and the transmission slider 401 slides relative to the transmission seat 490 at the same time, and the distance between the two transmission pins 410 gradually decreases. When the transmission pin 410 moves to the upper end of the slide groove 230, the elastic element 300 is in the second position, the force application position of the transmission link 200 is located at the lower end of the rotating shaft 220, and the force receiving position of the transmission link 200 is located above the rotating shaft 220. The two clamping ends 210 move away from each other, realizing the switching of the elastic element 300 from the first position to the second position, and the switching of the clamping bracket from the closed state to the open state. Similarly, when the user pushes the operating part 420 downward, the elastic element 300 can switch from the second position to the first position, and the clamping bracket can switch from the open state to the closed state.

[0062] In one embodiment, reference is made to Figure 1 , Figure 2 and Figure 8 The clamping bracket also includes two clamping arms 500, each of which is connected to a clamping end 210 of a transmission link 200. The two clamping arms 500 move closer together as the two clamping ends 210 approach each other, and move further apart as the two clamping ends 210 move further apart. In this embodiment, the two clamping arms 500 provide clamping force to the product. On the one hand, the structural dimensions of the clamping arms 500 can be set according to the usage requirements of the clamping bracket, so that the clamping bracket can match the clamping requirements of different types and specifications of products. On the other hand, the transmission link 200 and the drive mechanism 400 can be miniaturized, making the clamping bracket lighter.

[0063] The clamping arm 500 is not limited to being a single link, a linkage mechanism composed of multiple links, or a flexible rod with a flexible skeleton. In one embodiment, such as Figure 1 As shown, one end of the clamping arm 500 is connected to the clamping end 210 of the transmission link 200, and the other end of the clamping arm 500 has a clamping portion 510 protruding from the base 100. The clamping portion 510 is used to contact and clamp the product to increase the contact area between the clamping arm 500 and the product, making the clamping bracket clamp the product more securely. In addition, flexible pads can be attached to the facing surfaces of the two clamping portions 510. On the one hand, this increases the friction between the clamping portion 510 and the product, further improving the stability of the product being clamped. On the other hand, it allows the clamping portion 510 to make flexible contact with the product, avoiding hard damage to the product during the clamping process.

[0064] In one embodiment, the clamping arm 500 is fixedly connected to the clamping end 210 of the transmission link 200. The clamping arm 500 moves synchronously with the clamping end 210, causing the two clamping arms 500 to move closer or further apart, simplifying the structure of the clamping bracket. In another embodiment, such as Figure 8 As shown, the clamping arm 500 is slidably connected to the base 100. The clamping end 210 of the transmission link 200 is provided with a transmission groove 240. One end of the clamping arm 500 is provided with a sliding pin 520, which is slidably disposed in the transmission groove 240. When the two clamping ends 210 move closer or further apart, the two sliding pins 520 move towards each other or away from each other, thereby realizing the two clamping arms 500 moving closer or further apart. The base 100 constrains the sliding direction of the sliding pins 520. While the sliding pins 520 move relative to the base 100, they also move within the transmission groove 240, causing the clamping arm 500 to move in a preset direction. This makes the clamping and releasing of the product by the clamping arm 500 more stable.

[0065] It should be noted that, referring to Figure 2The transmission groove 240 and the slide groove 230 are arranged along the extension direction of the transmission link 200. The transmission groove 240 is closer to the clamping end 210 of the transmission link 200 than the slide groove 230. On the one hand, it makes full use of the installation space in the length direction of the transmission link 200 to realize the transmission connection between the transmission link 200 and the clamping arm 500 and the transmission slider 401. On the other hand, the slide groove 230 is only distributed in a part of the length direction of the transmission link 200, which shortens the movement stroke of the operating part 420 when the clamping bracket switches between the open and closed states, making the operation of the clamping bracket more sensitive.

[0066] In one embodiment, the base 100 is provided with two limiting grooves 110, and the sliding pin 520 is slidably connected in the limiting groove 110. The limiting groove 110 limits the sliding pin 520. When the elastic member 300 is in the first position or the second position, the sliding pin 520 moves to the end of the limiting groove 110. The direction of the resisting force applied to the inner wall of the limiting groove 110 by the sliding pin 520 is opposite to the direction of the elastic force applied to the transmission link 200 by the elastic member 300, so that the clamping bracket is stable in the open or closed state.

[0067] by Figures 6 to 8 Taking the drive mechanism 400 shown as an example, the elastic element 300 is set as a tension spring, the clamping end 210 is located at the lower end of the transmission link 200, and the first position is located below the second position. The elastic element 300 is located between the two transmission links 200 and always provides tension to the force-bearing position of the transmission link 200; refer to Figure 9 In Figure (g), when the elastic element 300 is in the first position, the two sliding pins 520 move to the opposite ends of the two limiting grooves 110. The direction of the elastic force applied by the elastic element 300 is opposite to the direction of the resisting force provided by the inner wall of the limiting groove 110 to the sliding pin 520, and both are located on the same side of the rotating shaft 220. The two forces are balanced, keeping the transmission link 200 in the current position. At this time, the clamping bracket is in the closed state. (Refer to...) Figure 9 In Figure (h), when the elastic element 300 is in the second position, the two sliding pins 520 move to the opposite ends of the two limiting grooves 110 respectively. The direction of the elastic force applied by the elastic element 300 is the same as the direction of the resisting force provided by the inner wall of the limiting groove 110 to the sliding pin 520, and they are located on both sides of the rotating shaft 220 respectively. The two forces are balanced with each other, so that the transmission link 200 is stable in the current position. At this time, the clamping bracket is in the open state.

[0068] In one embodiment, the extending direction of the limiting groove 110 is parallel to the sliding direction of the transmission slider 401 relative to the transmission seat 490, and the extending direction of the limiting groove 110 is perpendicular to the sliding direction of the transmission seat 490 relative to the base 100. On the one hand, the elastic force of the elastic member 300 is applied to the transmission link 200 through the transmission pin 410, and the holding force provided by the limiting groove 110 is applied to the transmission link 200 through the sliding pin 520. This makes the force applied to the transmission link 200 at the force-bearing position opposite to the force applied at the force-applying position, which is beneficial to keeping the transmission link 200 in balance. On the other hand, it makes full use of the installation space in different directions of the clamping bracket and simplifies the structure of the clamping bracket, making the connection of the components in the clamping bracket more compact.

[0069] Furthermore, the limiting groove 110 can be configured to extend horizontally, and the sliding pin 520, guided by the limiting groove 110, moves horizontally following the movement of the clamping end 210. The operating part 420 is configured to move vertically relative to the base 100. When the user pushes or pulls the operating part 420 vertically, the two sliding pins 520 respectively drive the two clamping arms 500 to move towards or away from each other horizontally, so that the two clamping arms 500 can move closer or further apart horizontally. On the one hand, the clamping part 510 at the end of the clamping arm 500 directly contacts or clamps the side of the product horizontally, making the clamping arm 500 clamp the product more securely; on the other hand, the clamping arms 500 only need to move horizontally to clamp or release the product, and the range of motion of the clamping arms 500 is small, which is conducive to miniaturizing the drive mechanism 400 and the base 100, and making the clamping bracket lighter.

[0070] In one embodiment, the two ends of the elastic element 300 are respectively connected to the opposite sides of the two transmission sliders 401. The connection method between the elastic element 300 and the transmission sliders 401 is not limited to hooking, peging, or sleeve. The transmission pin 410 is connected to the transmission slider 401 on the side of the transmission slider 401 and the transmission link 200. The elastic element 300 is located between the two transmission sliders 401. The elastic element 300 transmits elastic force to the transmission link 200 through the transmission slider 401 and the transmission pin 410, which reduces the probability of interference between the elastic element 300 and the movement of the transmission pin 410 relative to the transmission link 200 when the position is switched, making the switching of the elastic element 300 between the first position and the second position smoother.

[0071] Reference Figure 2The base 100 includes a base plate 120 and a cover plate 130, which are stacked together, defining an installation space between them for mounting the drive mechanism 400 and the transmission link 200. This protects the transmission of components within the drive mechanism 400 and the transmission between the transmission link 200 and the drive mechanism 400, reducing the probability of clamping bracket failure and making the clamping bracket more aesthetically pleasing. Furthermore, the clamping arm 500 is mounted on the side of the base plate 120 facing away from the cover plate 130, fully utilizing the space in the arrangement direction of the base plate 120 and the cover plate 130, making the clamping bracket more compact. The base plate 120 and the cover plate 130 are interlocked, and the connection method is not limited to threaded connection, snap-fit, or riveting.

[0072] The base 100 also includes a panel 150, which is located on the side of the substrate 120 facing away from the cover plate 130. The panel 150 is located at the foremost side of the clamping bracket. The clamping portion 510 of the clamping arm 500 protrudes from the panel 150 facing away from the substrate 120, so that the clamping portion 510 is located in front of the panel 150. When the product is clamped by the two clamping portions 510, the product contacts the panel 150, making the clamping bracket clamp the product more stably. In addition, a forward-facing base can be provided at the lower part of the panel 150. The base is used to contact the bottom of the product and support the product. The base and the clamping portion 510 are combined to further improve the stability of the product clamping.

[0073] The rotating shaft 220 and the sliding groove 230 are respectively disposed on both sides of the two pairs of transmission connecting rods 200. On the one hand, this avoids interference between the transmission pin 410 and the rotating shaft 220 when the transmission pin 410 moves along the sliding groove 230. On the other hand, the various structures that are connected to the sliding groove 230 (such as the transmission pin 410, the transmission slider 401, and the elastic element 300) and the various structures that are connected to the rotating shaft 220 (such as the base plate 120) can be disposed on both sides of the transmission mechanism, which facilitates the positional distribution of each structure. The transmission pin 410 is located between the base 100 and the transmission seat 490, the transmission slider 401 is located between the transmission connecting rod 200 and the transmission seat 490, and the transmission pin 410 is located between the transmission slider 401 and the transmission connecting rod 200. This allows the transmission slider 401 to move with the transmission seat 490 while also moving relative to the transmission seat 490, and simultaneously driving the transmission pin 410 to move along the sliding groove 230. This improves the power transmission efficiency between the transmission seat 490 and the transmission pin 410, making the operation of the clamping bracket more sensitive.

[0074] The transmission seat 490 is located between the base plate 120 and the cover plate 130. The rotating shaft 220 is located between the transmission connecting rod 200 and the base plate 120 and is rotatably connected to the base plate 120. The base plate 120 has a guide channel 121 on the side facing the cover plate 130. The transmission seat 490 is slidably connected in the guide channel 121. The guide channel 121 guides the movement of the transmission seat 490, making the user's operation of the operating part 420 more stable and smooth.

[0075] Reference Figure 8 The base 100 has two parallel moving channels 140. The transmission link 200 is disposed in the moving channel 140. When the elastic member 300 switches between the first position and the second position, the transmission link 200 rotates in the moving channel 140. When the elastic member 300 is in the first position or the second position, the clamping end 210 of the transmission link 200 or the end of the transmission link 200 away from the clamping end 210 abuts against the inner wall of the moving channel 140. The inner wall of the moving channel 140 restricts the rotation angle of the transmission link 200. The transmission link 200 can maintain a stable position when the elastic member 300 is in the first position or the second position, so that the clamping bracket is stable in the open or closed state.

[0076] by Figures 6 to 8 Taking the drive mechanism 400 shown as an example, the elastic element 300 is set as a tension spring, the clamping end 210 is located at the lower end of the transmission link 200, and the first position is located below the second position. When the elastic element 300 is in the first position, the lower end of the transmission link 200 (i.e., the clamping end 210) abuts against the inner wall of the bottom of the moving channel 140, so that the elastic element 300 is stable in the first position. When the elastic element 300 is in the second position, the upper end of the transmission link 200 abuts against the inner wall of the top of the moving channel 140, so that the elastic element 300 is stable in the second position.

[0077] Understandably, each moving channel 140 can be provided with two abutting surfaces on its inner wall. The two abutting surfaces are flat. When the elastic element 300 is in the first position and the second position, the transmission link 200 abuts against the two abutting surfaces respectively. The transmission link 200 is in stable contact with the abutting surfaces, which can further improve the stability of the position of the transmission link 200.

[0078] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A clamping bracket, characterized in that, include: Base; There are two transmission links, which are symmetrical to each other. The transmission links are rotatably connected to the base based on the rotating shaft, and one end of the transmission link is a clamping end. An elastic element has two ends movably connected to the transmission link. The elastic element has a first position and a second position. The elastic element is configured such that, when the elastic element is in the first position, the connection position between the elastic element and the transmission link and the clamping end are located on the same side of the rotating shaft; when the elastic element is in the second position, the connection position between the elastic element and the transmission link and the clamping end are located on opposite sides of the rotating shaft; when the elastic element is in one of the first and second positions, the elastic element provides an elastic force that brings the two clamping ends together; when the elastic element is in the other of the first and second positions, the elastic element provides an elastic force that moves the two clamping ends away from each other. A drive mechanism is connected to the elastic element and is used to drive the elastic element to switch between the first position and the second position.

2. The clamping bracket according to claim 1, characterized in that, The drive mechanism includes two drive pins, and the two ends of the elastic element are respectively connected to the two drive pins. The transmission link has a groove, and the drive pin is slidably connected in the groove. When the drive pin moves to the two ends of the groove, the elastic element is respectively located in the first position or the second position.

3. The clamping bracket according to claim 2, characterized in that, The drive mechanism includes an operating part, two transmission gears, two sector wheels, and a transmission rack. The operating part is connected to the transmission rack and is movable relative to the base. The transmission rack has meshing teeth on both opposite sides. The two transmission gears are located on opposite sides of the transmission rack and mesh with it. The circumference of each sector wheel meshes with the circumference of one of the transmission gears. The transmission pin is connected to the sector wheel and is eccentrically positioned relative to the rotation center of the sector wheel. Alternatively, the drive mechanism includes an operating part, a drive gear, two transmission gears, and two sector wheels. The operating part is connected to the drive gear and is rotatable relative to the base. The circumferences of the two transmission gears mesh with each other. The circumference of the drive gear meshes with the circumference of one of the transmission gears. The circumference of each sector wheel meshes with the circumference of one of the transmission gears. The transmission pin is connected to the sector wheel and is eccentrically positioned relative to the rotation center of the sector wheel. Alternatively, the drive mechanism includes an operating part, an operating link, and two transition links, wherein the operating part is connected to the operating link and is movable relative to the base; One end of each of the aforementioned transition links is connected to one of the aforementioned transmission pins, and the other end is rotatably connected to the aforementioned operating link. The two aforementioned transition links are respectively rotatably connected to the two ends of the aforementioned operating link. Alternatively, the drive mechanism includes an operating part, a transmission base, and two transmission sliders. The operating part is connected to the transmission base, the transmission base is movable relative to the base, and both transmission sliders are slidably connected to the transmission base. Each transmission slider is connected to a transmission pin.

4. The clamping bracket according to claim 2, characterized in that, The clamping bracket further includes two clamping arms, each of which is connected to the clamping end of one of the transmission links.

5. The clamping bracket according to claim 4, characterized in that, The base includes a base plate and a cover plate. The transmission linkage and the drive mechanism are installed between the base plate and the cover plate. The clamping arm is installed on the side of the base plate facing away from the cover plate.

6. The clamping bracket according to claim 4, characterized in that, The clamping arm is slidably connected to the base, the clamping end is provided with a transmission groove, and one end of the clamping arm is provided with a sliding pin, which is slidably disposed in the transmission groove.

7. The clamping bracket according to claim 6, characterized in that, The base also includes a limiting groove, and the sliding pin is slidably connected in the limiting groove. When the elastic element is in the first position or the second position, the sliding pin moves to the end of the limiting groove.

8. The clamping bracket according to claim 7, characterized in that, The driving mechanism includes an operating part, a transmission base, and two transmission sliders. The operating part is connected to the transmission base, and the transmission base is movable relative to the base. The two transmission sliders are slidably connected to the transmission base, and each transmission slider is connected to a transmission pin. The direction of movement of the transmission seat relative to the base is parallel to the extension direction of the limiting groove, and the extension direction of the limiting groove is perpendicular to the direction of movement of the transmission slider relative to the transmission seat.

9. The clamping bracket according to claim 2, characterized in that, The driving mechanism includes an operating part, a transmission base, and two transmission sliders. The operating part is connected to the transmission base, and the transmission base is movable relative to the base. The two transmission sliders are slidably connected to the transmission base, and each transmission slider is connected to a transmission pin. The rotating shaft and the sliding groove are respectively disposed on opposite sides of the transmission connecting rod, the transmission slider is located between the transmission connecting rod and the transmission seat, and the transmission pin is located between the transmission slider and the transmission connecting rod.

10. The clamping bracket according to claim 1, characterized in that, The base is provided with two side-by-side moving channels, and the transmission link is disposed in the moving channel. When the elastic element is in the first position or the second position, the clamping end of the transmission link or the end of the transmission link away from the clamping end abuts against the inner wall of the moving channel.

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