Clamping support

Abstract

The utility model relates to a clamping support which comprises a base plate, a clamping arm, 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 in the state of providing elastic force all the time, and the second end of the elastic piece is driven by the driving mechanism so that the clamping support can be clamped. The direction of elastic force provided by the elastic piece is changed in the process that the second end is switched between the first position and the second position, the elastic piece provides clamping force enabling the two clamping arms to be close to each other when the second end is located at the first position, and the elastic piece provides acting force enabling the two clamping arms to be away from each other when the second end is located at the second position. Automatic opening and closing of the clamping support are achieved, use is convenient, 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 then the use experience is improved.

Description

Technical Field

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

[0002] Currently, stands for holding mobile phones, tablets, and other products on the market typically use elasticity for fixing or resetting. For example, a stand 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] The clamping bracket provided in the embodiments of this utility model includes a base plate, clamping arms, elastic elements, and a driving mechanism. Two clamping arms are symmetrically arranged, and one end of each clamping arm is rotatably connected to the base plate. Two elastic elements are provided, each elastic element being applied one-to-one to provide elastic force to one of the clamping arms. Each elastic element has a first end and a second end. The first end is connected to the clamping arm, and the second end is movably connected to the base plate. The second end has a first position and a second position. The elastic element is configured such that: when the second end is in the first position, at least a portion of the elastic element is located on the side where the two clamping arms face each other, and provides an elastic force that brings the two clamping arms closer together; when the second end is in the second position, at least a portion of the elastic element is located on the side where the two clamping arms face away from each other, and provides an elastic force that moves the two clamping arms away from each other. The driving mechanism is connected to the second end and is used to drive the second end to switch between the first position and the second position.

[0006] In the embodiments of this utility model, the elastic element of the clamping bracket is always in a state of providing elastic force during the switching between the open and closed states. By driving the second end of the elastic element through the driving mechanism, the direction of the elastic force provided by the elastic element is changed during the switching between the first and second positions. When the second end is in the first position, the elastic element provides a clamping force that brings the two clamping arms together, and when the second end is in the second position, it provides a force that moves the two clamping arms away from each other. This realizes the automatic opening and closing of the clamping bracket, which is more convenient to use. Users do not need to store force for the elastic element, which reduces the operating force and difficulty when using the clamping bracket, thereby improving the user experience.

[0007] In some embodiments, the driving mechanism includes an operating part and a transmission part, the second end is slidably disposed on the substrate, the two ends of the transmission part are respectively connected to the operating part and the second end, the operating part is rotatably disposed on the substrate, and the second end can slide relative to the substrate following the rotation of the operating part;

[0008] Alternatively, the driving mechanism includes an operating part and a transmission part, the second end is slidably disposed on the substrate, the operating part and the transmission part are both rotatably disposed on the substrate, the operating part and the transmission part are peripherally engaged, the second end is connected to the transmission part and is eccentrically disposed relative to the rotation center of the transmission part, and the second end can slide relative to the substrate following the rotation of the operating part;

[0009] Alternatively, the driving mechanism includes an operating part connected to the second end, the second end being slidably disposed on the substrate, and the second end being able to slide relative to the substrate following the movement of the operating part.

[0010] In some embodiments, the driving mechanism includes an operating part and two transmission parts. Each transmission part includes a transmission wheel and a sector wheel. Both the transmission wheel and the sector wheel are rotatably connected to the substrate, and the circumference of the transmission wheel meshes with the circumference of the sector wheel. The second end is connected to the sector wheel and is eccentrically disposed relative to the rotation center of the sector wheel. One of the transmission wheels meshes with the circumference of the operating part and rotates with the rotation of the operating part. The circumferences of the two transmission wheels mesh with each other. The second ends of the two elastic members can slide synchronously relative to the substrate with the rotation of the operating part.

[0011] Alternatively, the driving mechanism includes an operating part and a transmission part connected together. Guide surfaces are symmetrically arranged on opposite sides of the transmission part. The second end and the transmission part are both slidably disposed on the substrate. The second ends of the two elastic members are respectively located on opposite sides of the transmission part and abut against the guide surfaces. The second ends of the two elastic members can slide synchronously relative to the substrate following the movement of the operating part. The distance between the two guide surfaces gradually decreases along the sliding direction in which the transmission part drives the second end to switch to the second position.

[0012] Alternatively, the driving mechanism includes an operating part and two transmission parts. The operating part and the second end are slidably disposed on the substrate. One end of each of the two transmission parts is rotatably connected to the operating part, and the other end is respectively connected to the second end of the two elastic members. The transmission parts can move with the movement of the operating part and drive the second ends of the two elastic members to slide synchronously relative to the substrate.

[0013] In some embodiments, the driving mechanism includes an operating part and two transmission parts. The operating part and the second end are slidably disposed on the substrate. One end of each of the two transmission parts is rotatably connected to the operating part, and the other end is respectively connected to the second end of the two elastic members. The transmission parts can move with the movement of the operating part and drive the second ends of the two elastic members to slide synchronously relative to the substrate.

[0014] The clamping bracket further includes a first fixing member, which is fixedly connected to the base plate. The operating part is slidably connected to the first fixing member. The first fixing member is provided with a guide groove, and the operating part is provided with a guide pin. The guide pin is slidably connected in the guide groove and rotatably connected to the transmission part.

[0015] In some embodiments, the driving mechanism includes a movable pin, the substrate has a first groove, the movable pin is slidably disposed in the first groove, the second end is connected to the movable pin, and when the movable pin moves to both ends of the first groove, the second end is respectively located at the first position and the second position.

[0016] In some embodiments, the substrate has a limiting groove, the clamping arm has a limiting post, the limiting post is slidably disposed in the limiting groove, the first end is connected to the limiting post, and when the moving pin moves to the end of the first sliding groove, the limiting post moves to the end of the limiting groove.

[0017] In some embodiments, the clamping bracket further includes a first fixing member, which is stacked with the substrate. The elastic member is located between the first fixing member and the substrate. The driving mechanism is located on the side of the first fixing member facing away from the substrate. The first fixing member is provided with a through second sliding groove. The projection of the first sliding groove and the second sliding groove along the arrangement direction of the first fixing member and the substrate coincides. The movable pin is slidably disposed in the first sliding groove and the second sliding groove.

[0018] In some embodiments, both the first slide groove and the limiting groove are arc-shaped, and the centers of the first slide groove and the limiting groove are located between the first slide groove and the limiting groove.

[0019] Alternatively, both the first slide groove and the limiting groove are arc-shaped, with the center of the limiting groove located between the first slide groove and the limiting groove, and the center of the first slide groove located on the side of the first slide groove facing away from the limiting groove.

[0020] In some embodiments, the line connecting the center of the limiting groove and the center of the first sliding groove is a center line, and both the limiting groove and the first sliding groove are symmetrical with respect to the center line;

[0021] Alternatively, the line connecting the center of the limiting groove and the center of the first sliding groove is the center line, the angle between the line connecting the end of the limiting groove and the center of the first sliding groove and the center line is the first angle, the angle between the line connecting the end of the first sliding groove and the center of the limiting groove and the center line is the second angle, and the first angle is not greater than the second angle.

[0022] In some embodiments, the clamping bracket further includes a first fixing member, a second fixing member, and a third fixing member stacked with the substrate. The second fixing member and the third fixing member are located on opposite sides of the substrate. The driving mechanism and the first fixing member are located between the substrate and the third fixing member. Part of the clamping arm is located between the second fixing member and the substrate, and part of the clamping arm extends to the side of the substrate. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 A perspective view of one embodiment of the clamping bracket;

[0025] Figure 2 for Figure 1 An exploded view of one embodiment of the clamping bracket;

[0026] Figure 3This is a schematic diagram showing the interaction between the elastic element and the clamping arm when the second end is in the first position.

[0027] Figure 4 This is a schematic diagram showing the interaction between the elastic element and the clamping arm when the second end is in the second position.

[0028] Figure 5 A schematic diagram of one embodiment of the drive mechanism;

[0029] Figure 6 This is a schematic diagram of the drive mechanism in other embodiments;

[0030] Figure 7 This is a schematic diagram of the drive mechanism in other embodiments;

[0031] Figure 8 This is a schematic diagram of the drive mechanism in other embodiments;

[0032] Figure 9 This is a schematic diagram showing the fit between the first fixing member and the elastic member;

[0033] Figure 10 This is a schematic diagram showing the fit between the transmission unit, the first fixing member, and the base plate.

[0034] Figure 11 This is a schematic diagram of another embodiment of the first chute;

[0035] Figure 12 for Figure 1 A cross-sectional view of one embodiment of the clamping bracket.

[0036] Figure label:

[0037] Clamping arm 100, limiting post 110; base plate 200, first sliding groove 210, limiting groove 220; elastic element 300, first end 310, second end 320; drive mechanism 400, operating part 410, guide pin 411, guide channel 412, limiting rib 413, limiting channel 414, transmission part 420, transmission wheel 421, fan-shaped wheel 422, guide surface 423, moving pin 430; first fixing member 500, guide groove 510, guide rail 520, second sliding groove 530; second fixing member 600; third fixing member 700. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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 return it to the elastic state before the force was released. This process is difficult and makes the clamping bracket inconvenient to use, resulting in a poor user experience.

[0043] Reference Figure 1 and Figure 2This utility model provides a clamping bracket for providing clamping force to products such as mobile phones, tablets, and computers, so that the products are clamped and kept in a fixed position. The clamping bracket includes two symmetrically arranged clamping arms 100. The two clamping arms 100 can be rotated to move closer or further apart. When the two clamping arms 100 tend to move closer together, the clamping bracket is in a closed state or switches to a closed state. When the clamping bracket is in the closed state, it provides clamping force to the product, and the product is clamped and kept in a stable position. When the two clamping arms 100 tend to move further apart, the clamping bracket is in an open state or switches to an 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. The clamping arm 100 is not limited to being a single link or a transmission pair formed by multiple links; of course, the output end of the clamping arm 100 can directly clamp the product, and the output end of the clamping arm 100 can also be connected to a slider structure, which clamps the product. The slider structure moves with the rotation of the clamping arm 100. When the clamping arms 100 come together, the slider structure moves closer to each other and clamps the product. When the clamping arms 100 move away from each other, the slider structure moves away synchronously and releases the product.

[0044] Reference Figure 3 and Figure 4 The clamping bracket also includes a base plate 200 and two elastic members 300. One end of each of the two clamping arms 100 is rotatably connected to the base plate 200, and both clamping arms 100 can rotate relative to the base plate 200. Each elastic member 300 is connected to one clamping arm 100, and the elastic force provided by the elastic member 300 is the force that causes the two clamping arms 100 to move closer together or further apart. The elastic member 300 has a first end 310 and a second end 320. The first end 310 is connected to the clamping arm 100 and is eccentrically positioned relative to the rotation center of the clamping arm 100. The second end 320 is movably connected to the base plate 200 and can switch between a first position and a second position through movement. Figure 3 As shown, when the second end 320 is in the first position, at least a portion of the elastic element 300 is located on one side of the two clamping arms 100 facing each other. At this time, the line connecting the first end 310 and the second end 320 is inclined based on one clamping arm 100 towards the other clamping arm 100, and the elastic force on the clamping arm 100 is directed towards the other clamping arm 100. The elastic element 300 provides an elastic force that brings the two clamping arms 100 together. At this time, the clamping bracket is in the closed state and can provide clamping force to the product; as Figure 4As shown, when the second end 320 is in the second position, at least a portion of the elastic element 300 is located on the opposite side of the two clamping arms 100. At this time, the line connecting the first end 310 and the second end 320 is inclined based on one clamping arm 100 being away from the other clamping arm 100, and the elastic force on the clamping arm 100 is directed away from the other clamping arm 100. The elastic element 300 provides an elastic force that moves the two clamping arms 100 away from each other. At this time, the clamping bracket is in the open state and the product is released.

[0045] Reference Figure 2 and Figure 5 The clamping bracket also includes a drive mechanism 400, which can be mounted on the substrate 200. The drive mechanism 400 is connected to the second end 320 and is used to drive the second end 320 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.

[0046] 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 second end 320 of the elastic element 300 through the drive mechanism 400, the direction of the elastic force provided by the elastic element 300 is changed during the switching between the first and second positions. When the second end 320 is in the first position, the elastic element 300 provides a clamping force that brings the two clamping arms 100 together, and when the second end 320 is in the second position, it provides a force that moves the two clamping arms 100 away from each other. Thus, the clamping bracket can be automatically opened and closed simply by changing the position of the second end 320, which is more convenient to use. Furthermore, since the elastic element 300 does not completely release its elastic potential energy, the user does not need to store force for the elastic element 300, which reduces the operating force and difficulty when using the clamping bracket and can effectively improve the user experience.

[0047] Understandably, the position of the rotation center of the clamping arm 100 relative to the substrate 200 remains unchanged. The movement trajectory of the end of the clamping arm 100 is a circle or arc formed with the rotation center as the center and its own length as the radius. When the elastic force applied by the elastic member 300 to the clamping arm 100 is directed toward the extension direction of the clamping arm 100 itself, the elastic force is directed toward the radial direction of the circle, and the component force in the tangential direction of the circle is zero, so the clamping arm 100 will not rotate. When the direction of the elastic force applied by the elastic member 300 to the clamping arm 100 is at an angle to the extension direction of the clamping arm 100 itself, the elastic force has a component force along the tangential direction of the circle. This component force will drive the clamping arm 100 to rotate and provide a force that makes the clamping arms 100 move closer or further apart.

[0048] To avoid interference between the movement of the elastic element 300 and the clamping arm 100 in clamping the product, and to provide sufficient range of motion for the clamping arm 100, in one embodiment of this invention, the upper end of the elastic element 300 is a first end 310, and the lower end of the elastic element 300 is a second end 320. The second end 320 is located below the rotation center of the clamping arm 100, and the upper part of the clamping arm 100 provides clamping force to the product. Taking the switching process of the second end 320 from the first position to the second position as an example, when the second end 320 is in the first position, the elastic element 300 is tilted upward relative to the clamping arm 100, and the elastic element 300 is located between the two clamping arms 100. The elastic force applied by the elastic element 300 to the clamping arm 100 has a tangential component towards the other clamping arm 100. At this time, the two clamping arms 100 are close to each other. The elastic element 300 is adjusted to provide clamping force to the product. When the second end 320 switches from the first position to the second position, the tangential component of the elastic force towards the other clamping arm 100 gradually decreases. When the direction of the elastic force is the same as the extension direction of the clamping arm 100, the tangential component decreases to zero. When the second end 320 continues to switch to the second position, the elastic element 300 begins to tilt downward relative to the clamping arm 100 and is located on the side opposite to the two clamping arms 100. The direction of the tangential component changes to the opposite to the other clamping arm 100. The clamping arms 100 rotate under the action of the elastic force and move away from each other. As the second end 320 gradually approaches the second position, the tangential component gradually increases. When the second end 320 switches to the second position, the value of the tangential component is the maximum, keeping the two clamping arms 100 away from each other, allowing the user to remove the product.

[0049] 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 second end 320 to switch between the first position and the second position, realizing the automatic opening and closing of the clamping bracket.

[0050] Of course, users can also directly control the drive mechanism 400 to make the drive mechanism 400 drive the second end 320 to move. The control direction of the drive mechanism 400 is not limited to sliding, rotating, etc.

[0051] Specifically, such as Figure 6In the embodiment shown in Figure (a), the drive mechanism 400 includes an operation part 410 and a transmission part 420. The operation part 410 is operated by the user, and its second end 320 is slidably disposed on the substrate 200, meaning that the second end 320 can slide relative to the substrate 200 to switch between a first position and a second position. The two ends of the transmission part 420 are respectively connected to the operation part 410 and the second end 320. The transmission part 420 is not limited to being a single link or a linkage mechanism composed of multiple links. The operation part 410 is rotatably disposed on the substrate 200. When the user rotates the operation part 410, the operation part 410 rotates relative to the substrate 200, synchronously driving the transmission part 420 to rotate. The second end 320 follows the rotation of the transmission part 420 and slides relative to the substrate 200, switching between the first position and the second position. That is, the user can automatically open and close the clamping bracket by rotating the operation part 410.

[0052] Or, such as Figure 6 In the embodiment shown in Figure (b), the drive mechanism 400 also includes an operating part 410 and a transmission part 420, with the second end 320 slidably disposed on the substrate 200. Both the operating part 410 and the transmission part 420 are rotatably disposed on the substrate 200. The periphery of both the operating part 410 and the transmission part 420 is provided with meshing gear teeth, allowing them to rotate synchronously. Both the transmission part 420 and the operating part 410 can be configured as gears, or the operating part 410 can be configured as a gear and the transmission part 420 as a sector wheel. The transmission part 420 can swing in sync with the rotation of the operating part 410. The second end 320 is connected to the transmission part 420 and is eccentrically disposed relative to the rotation center of the transmission part 420. When the user rotates the operating part 410, the transmission part 420 rotates synchronously, and the second end 320 slides relative to the substrate 200 in sync with the rotation of the transmission part 420, switching between a first position and a second position. That is, the user can automatically open or close the clamping bracket by rotating the operating part 410.

[0053] Or, such as Figure 7 In the embodiment shown in Figure (c), the drive mechanism 400 includes an operation unit 410, which is directly connected to the second end 320, which is slidably disposed on the substrate 200. When the user pushes the operation unit 410 to move, the operation unit 410 causes the second end 320 to slide relative to the substrate 200, thereby switching the second end 320 between a first position and a second position. That is, the user can automatically open and close the clamping bracket by pushing the operation unit 410 to move.

[0054] Understandably, two sets of drive mechanisms 400 can be installed inside the clamping bracket. Each elastic element 300 has a drive mechanism 400 connected to its second end 320. The two drive mechanisms 400 drive the second ends 320 of the two elastic elements 300 to move respectively. When the user uses the clamping bracket, he / she can simultaneously operate the operating part 410 inside the two drive mechanisms 400 to make the second ends 320 of the two elastic elements 300 move synchronously, and the two clamping arms 100 move closer or further apart from each other at the same time.

[0055] Furthermore, to further improve the ease of use of the clamping bracket, in some embodiments, the user can simultaneously drive the second ends 320 of the two elastic elements 300 to switch positions by operating an operating unit 410, thereby causing the two clamping arms 100 to move closer or further apart simultaneously. Specifically, such as Figure 7 In the embodiment shown in Figure (d), the drive mechanism 400 includes an operating part 410 and two transmission parts 420. Each transmission part 420 includes a transmission wheel 421 and a sector wheel 422. Both the transmission wheel 421 and the sector wheel 422 are rotatably connected to the base plate 200, and the periphery of the transmission wheel 421 meshes with the periphery of the sector wheel 422. The two transmission wheels 421 are symmetrically arranged, and one of the transmission wheels 421 meshes with the periphery of the operating part 410. Each elastic element 300 is connected to one sector wheel 422, and the second end 320 of the elastic element 300 is connected to the sector wheel 422 and is eccentrically arranged relative to the rotation center of the sector wheel 422. Thus, when the user rotates the operating part 410, the two transmission wheels 421 rotate synchronously with the operating part 410. Furthermore, the two transmission wheels 421 rotate in opposite directions. Simultaneously, the sector wheel 422 is driven by the transmission wheel 421 to swing, and the two sector wheels 422 swing in the same direction. The second ends 320 of the two elastic elements 300 slide synchronously relative to the base plate 200 following the swing of the sector wheel 422, and switch between the first position and the second position. The two clamping arms 100 rotate towards each other or away from each other at the same time, so that the clamping arms 100 move closer to each other or further away from each other. Thus, the user can simultaneously switch the position of the second ends 320 of the two elastic elements 300 by turning the operating part 410, and make the two clamping arms 100 move closer to each other or further away from each other at the same time, so as to realize the automatic opening or closing of the clamping bracket and improve the ease of use and opening and closing efficiency of the clamping bracket.

[0056] Or, such as Figure 8In the embodiment shown, the drive mechanism 400 includes an operating part 410 and a transmission part 420 connected together. The second ends 320 of the two elastic members 300 are respectively located on opposite sides of the transmission part 420. Guide surfaces 423 are symmetrically arranged on opposite sides of the transmission part 420. The second ends 320 abut against the guide surfaces 423. Both the second ends 320 and the transmission part 420 are slidably disposed on the substrate 200. When the transmission part 420 moves relative to the substrate 200, the distance between the two guide surfaces 423 gradually changes along the sliding direction of the transmission part 420, so that the guide surfaces 423 are in an inclined state. The second ends 320 slide relative to the substrate 200 under the pushing action of the guide surfaces 423, so that the second ends 320 switch positions between the first position and the second position. Taking the downward sliding of the transmission part 420 as an example, which pushes the second end 320 to switch from the first position to the second position, the distance between the two guide surfaces 423 gradually decreases along the sliding direction when the transmission part 420 drives the second end 320 to switch to the second position. As the transmission part 420 continues to slide downward, while the second end 320 slides relative to the substrate 200, the contact position between the second end 320 and the guide surface 423 changes, causing the distance between the two second ends 320 to increase. The second end 320 gradually moves downward and gradually approaches the second position, realizing the switching of the second end 320 from the first position to the second position. Simultaneously, the two clamping arms 100 rotate in opposite directions. Therefore, by pushing the operation part 410 to move, the operation part 410 drives the transmission part 420 to move relative to the substrate 200, simultaneously switching the positions of the second ends 320 of the two elastic elements 300 and causing the two clamping arms 100 to move closer or further apart, thus achieving automatic opening or closing of the clamping bracket.

[0057] It should be noted that during the switching process from the first position to the second position of the second end 320, the elastic force of the elastic element 300 gradually increases. For example, if the elastic element 300 is set as a tension spring, the tension of the elastic element 300 gradually increases as the second end 320 gradually approaches the second position. When the user releases the operation part 410, the elastic element 300 releases its elastic force and automatically returns from the second position to the first position. At the same time, the transmission part 420 moves from bottom to top following the movement of the second end 320 and returns to the initial position. Alternatively, a spring can be set between the two second ends 320, with each end of the spring connected to one of the two second ends 320. When the second end 320 moves to the second position, the spring is stretched. After the user releases the operation part 410, the spring releases its elastic force, causing the second end 320 to automatically return from the second position to the first position. At the same time, the transmission part 420 moves from bottom to top following the movement of the second end 320 and returns to the initial position. Thus, through the above settings, the second ends 320 of the two elastic elements 300 can be switched at the same time, and the two clamping arms 100 can be moved closer or further apart synchronously, so as to realize the automatic opening or closing of the clamping bracket.

[0058] Or, such as Figure 5 In the illustrated embodiment, the drive mechanism 400 includes an operation part 410 and two transmission parts 420. The operation part 410 and its second end 320 are slidably disposed on the substrate 200. One end of each of the two transmission parts 420 is rotatably connected to the operation part 410, and the other end of each of the two transmission parts 420 is connected to the second end 320 of each of the two elastic members 300. When the user pushes the operation part 410 to move, the operation part 410 synchronously drives the two transmission parts 420 to move. The upper ends of the two transmission parts 420 swing synchronously relative to the operation part 410 in opposite directions. While rotating relative to the operation part 410, the two transmission parts 420 move with the operation part 410. The second end 320 of the two elastic members 300 slides synchronously relative to the substrate 200 following the swing and movement of the transmission parts 420, and switches between a first position and a second position. The two clamping arms 100 rotate simultaneously toward each other or toward each other, so that the clamping arms 100 move closer to each other or further away from each other. Thus, by pushing the operating part 410 to move, the second ends 320 of the two elastic elements 300 are switched in position, and the two clamping arms 100 are moved closer or further apart in sync, so as to realize the automatic opening or closing of the clamping bracket.

[0059] Specifically, when the second end 320 is in the first position, the second ends 320 of both transmission parts 420 and both elastic members 300 are located between the two clamping arms 100, and the elastic members 300 provide a mutual pulling force to the clamping arms 100; when the user pushes the operating part 410 to move downward, the second end 320 swings relative to the transmission part 420 and moves downward with the transmission part 420, the distance between the second ends 320 of the two elastic members 300 gradually increases, and the second end 320 switches from the first position to the second position; when the second end 320 is in the second position... At this time, the two transmission parts 420 and the two elastic elements 300 are located on opposite sides of the two clamping arms 100. The elastic elements 300 provide a force that moves away from each other to the clamping arms 100. When the user pushes the operating part 410 to move upward, the second end 320 swings relative to the transmission part 420 and moves upward with the transmission part 420. The distance between the second ends 320 of the two elastic elements 300 gradually decreases, and the second ends 320 switch from the second position to the first position. In this way, the user can automatically open or close the clamping bracket by pushing the operating part 410.

[0060] Furthermore, refer to Figure 2 and Figure 9The clamping bracket also includes a first fixing member 500, which is fixedly connected to the base plate 200. An operating part 410 is slidably connected to the first fixing member 500. The first fixing member 500 has a guide groove 510, and the operating part 410 has a guide pin 411. The guide pin 411 is slidably connected within the guide groove 510 and rotatably connected to the transmission part 420. The sliding engagement between the guide pin 411 and the guide groove 510 provides constraint for the movement of the transmission part 420, allowing the transmission part 420 to drive the second end 320 to move along a preset trajectory, enabling the second end 320 to switch between a first position and a second position. In some embodiments, the transmission part 420 has a through-hole that communicates with the guide groove 510. The guide pin 411 passes sequentially through the through-hole and the guide groove 510, and can rotate within the through-hole, achieving a rotatable connection between the guide pin 411 and the transmission part 420. Furthermore, the guide pin 411 can drive the transmission part 420 to move along the guide groove 510.

[0061] Additionally, refer to Figure 2 and Figure 10 One of the first fixing member 500 and the operating part 410 is provided with a guide channel 412, and the other is provided with a guide rail 520. The guide rail 520 is slidably connected within the guide channel 412 and can slide within the guide channel 412. The sliding direction of the guide rail 520 along the guide channel 412 is parallel to the sliding direction of the guide pin 411 along the guide groove 510. The sliding cooperation between the guide rail 520 and the guide channel 412 provides guidance for the sliding of the operating part 410 relative to the base plate 200, enabling the operating part 410 to slide smoothly and making the user's operation of the operating part 410 smoother. Figure 2 and Figure 10 In the illustrated embodiment, the first fixing member 500 is provided with a guide rail 520, and two transmission parts 420 are located on opposite sides of the guide rail 520. The operating part 410 is provided with multiple spaced and protruding limiting ribs 413 on the side facing the first fixing member 500. Multiple sets of adjacent limiting ribs 413 respectively define a guide channel 412 and two limiting channels 414. The guide channel 412 is located between the two limiting channels 414. The guide rail 520 is slidably connected in the guide channel 412. The transmission part 420 is movably disposed in the limiting channel 414. The limiting channel 414 is used to assist the guide groove 510 in constraining the movement of the transmission part 420, so that the transmission part 420 is limited in the arrangement direction of the first fixing member 500 and the operating part 410.

[0062] Reference Figure 2 and Figure 5The drive mechanism 400 also includes a movable pin 430. The substrate 200 has a first groove 210. The movable pin 430 is slidably disposed in the first groove 210. The second end 320 is connected to the movable pin 430 and moves with the movable pin 430. The first groove 210 is used to constrain the movement trajectory of the movable pin 430. When the movable pin 430 moves to both ends of the first groove 210, the movable pin 430 is limited by the groove wall of the first groove 210. At this time, the second end 320 is located at the first position and the second position respectively. By restricting the trajectory and position of the movable pin 430, the second end 320 can move precisely to the first position or the second position and switch smoothly between the first position and the second position.

[0063] The substrate 200 is provided with a limiting groove 220, and the clamping arm 100 is provided with a limiting post 110. The limiting post 110 is slidably connected in the limiting groove 220. The limiting groove 220 is used to limit the rotation angle of the limiting post 110. The first end 310 of the elastic member 300 is connected to the limiting post 110. When the moving pin 430 moves to the end of the first sliding groove 210, the limiting post 110 moves synchronously to the end of the limiting groove 220. Through the limiting of the moving pin 430 by the first sliding groove 210 and the limiting of the limiting post 110 by the limiting groove 220, when the clamping bracket is in the open or closed state, the first end 310 and the second end 320 of the elastic member 300 can maintain a stable position.

[0064] The connection methods between the elastic element 300 and the limiting post 110, and between the elastic element 300 and the movable pin 430, are not limited to hanging, hooking, or socketing.

[0065] like Figure 3 and Figure 4As shown, the operating part 410 is driven to move up and down. Both the limiting groove 220 and the first sliding groove 210 tend to extend vertically. When the second end 320 is in the first position, the operating part 410 is at the top of its stroke. The limiting post 110 is located at the upper end of the limiting groove 220, the moving pin 430 is located at the upper end of the first sliding groove 210, and the elastic element 300 is located diagonally above the clamping arm 100 and between the two clamping arms 100. At this time, the limiting post 110 is subjected to an upward component of the elastic force applied by the elastic element 300, causing the two clamping arms 100 to move closer together. Since the limiting post 110 is simultaneously limited by the downward limiting effect of the limiting groove 220, the clamping arm 100 can be stabilized at the current angle, thereby keeping the clamping bracket in the closed state. When the user pushes the operating part 410 downward, the operating part 410 moves from top to bottom and simultaneously drives the transmission part 420 downward. The transmission part 420 then drives... The movable pin 430 moves downward from the upper end of the first slide groove 210. As the second end 320 of the elastic element 300 moves downward, the limiting post 110 moves downward from the upper end of the limiting groove 220 under the elastic force of the elastic element 300. During this process, the two clamping arms 100 gradually move away from each other. When the operating part 410 moves to the lowest end of the stroke, the transmission part 420 drives the transmission pin to move to the lower end of the first slide groove 210. At the same time, the limiting post 110 moves to the lower end of the limiting groove 220. At this time, the elastic element 300 is located diagonally below the clamping arm 100 and on the opposite side of the two clamping arms 100. At this time, the limiting post 110 is subjected to the elastic force applied by the elastic element 300 with a downward component force, causing the two clamping arms 100 to move away from each other. Since the limiting post 110 is simultaneously subjected to the upward limiting effect of the limiting groove 220, the clamping arm 100 can be stabilized at the current angle, so that the clamping bracket can be kept in the open state.

[0066] The movement trajectory of the limiting post 110 is an arc formed with the rotation center of the clamping arm 100 as the center and the distance between the limiting post 110 and the rotation center as the radius. Therefore, the limiting groove 220 is set in an arc shape to match the movement trajectory of the limiting post 110. The moving pin 430 needs to rotate relative to the operating part 410 during the vertical movement following the transmission part 420. Therefore, the first sliding groove 210 is set in an arc shape to match the movement trajectory of the moving pin 430. Furthermore, as... Figure 3 and Figure 4 In the embodiment shown, the center of the first slide groove 210 and the limiting groove 220, as well as the rotation center of the clamping arm 100, are all located between the first slide groove 210 and the limiting groove 220. The curved portion of the first slide groove 210 has a tendency to bend downwards to reduce the sliding resistance of the moving pin 430 in the first slide groove 210, making the user's operation of the operating part 410 smoother.

[0067] Alternatively, in another embodiment, refer to Figure 11The center of the limiting groove 220 is located between the first slide groove 210 and the limiting groove 220. The center of the first slide groove 210 is located on the side of the first slide groove 210 facing away from the limiting groove 220. The limiting groove 220 and the first slide groove 210 are bent in the same direction. When the second end 320 switches between the first position and the second position, the length change and elastic force change of the elastic element 300 are small, and the user's operation of the operating part 410 is smoother.

[0068] The line connecting the center of the limiting groove 220 and the center of the first sliding groove 210 is defined as the center line. Both the limiting groove 220 and the first sliding groove 210 are symmetrical with respect to the center line. Thus, when the moving pin 430 moves to the center of the first sliding groove 210, the extension direction of the clamping arm 100 coincides with the extension direction of the center line. When the moving pin 430 is located at both ends of the first sliding groove 210, the elastic element 300 is located on one side of the center line, and the tangential component of the elastic force provided by the elastic element 300 is exactly opposite. This realizes the change in the direction of the elastic force applied by the elastic element 300 to the clamping arm 100 during the position switching process of the second end 320 between the first position and the second position, so that the clamping bracket can automatically open or close.

[0069] In one embodiment, reference is made to Figure 3 The angle between the line connecting the end of the limiting groove 220 and the center of the first sliding groove 210 and the center line is the first included angle α, and the angle between the line connecting the end of the first sliding groove 210 and the center of the limiting groove 220 and the center line is the second included angle β. The first included angle α is not greater than the second included angle β. The tangential component of the elastic force applied by the elastic member 300 to the clamping arm 100 is proportional to the value of the second included angle β. Thus, the clamping arm 100 receives sufficient elastic force when the second end 320 is in the first position or the second position, so that the clamping bracket has a stable open state and a closed state.

[0070] like Figure 2 and Figure 12In the illustrated embodiment, the first fixing member 500 and the substrate 200 are stacked together, the elastic member 300 is located between the first fixing member 500 and the substrate 200, the driving mechanism 400 is located on the side of the first fixing member 500 facing away from the substrate 200, the clamping arm 100 is located on the side of the substrate 200 facing away from the first fixing member 500, the limiting groove 220 penetrates the substrate 200 along the arrangement direction of the first fixing member 500 and the substrate 200, the limiting post 110 passes through the limiting groove 220 and is connected to the first end 310 of the elastic member 300, and the first fixing member 500 is provided with a clamping arm 300 on the side of the substrate 200 facing away from the first fixing member 500. The second slide groove 530 passes through the arrangement direction of the substrate 200. The movable pin 430 passes through the second slide groove 530 and is inserted into the first slide groove 210 so that the second end 320 of the elastic member 300 can be connected to the movable pin 430. The movable pin 430 is slidably disposed in the first slide groove 210 and the second slide groove 530. The projections of the first slide groove 210 and the second slide groove 530 along the arrangement direction of the first fixing member 500 and the substrate 200 coincide. The first slide groove 210 and the second slide groove 530 have the same length and curvature, and can jointly limit the movable pin 430.

[0071] The clamping bracket also includes a second fixing member 600 and a third fixing member 700. The second fixing member 600, the substrate 200, the first fixing member 500, and the third fixing member 700 are arranged in sequence. The first fixing member 500 is fixed to the side of the substrate 200, and the substrate 200 is fixed between the second fixing member 600 and the third fixing member 700. The drive mechanism 400 and the first fixing member 500 are located between the substrate 200 and the third fixing member 700. Part of the clamping arm 100 is located between the second fixing member 600 and the substrate 200. The second fixing member 600 can block the slot on the substrate 200, so that the transmission position of the drive mechanism 400 and the substrate 200 is protected by the second fixing member 600. At the same time, the second fixing member 600 can provide a flat contact surface for the product to be clamped, so that the product is stably clamped.

[0072] The upper end of the clamping arm 100 extends to the side of the second fixing member 600, and the upper end of the clamping arm 100 protrudes to the side of the second fixing member 600 facing away from the substrate 200, so that the upper end of the clamping arm 100 can contact the product and provide clamping force to the product. Understandably, a support bracket can also be provided on the side of the second fixing member 600 facing away from the substrate 200. The product can be placed on top of the support bracket, and the support bracket provides support to the product. When the product is clamped by the clamping bracket, it can be simultaneously subjected to the clamping action of the clamping arm 100 and the supporting action of the support bracket, making the use of the clamping bracket more reliable.

[0073] The operating part 410 is slidably disposed between the first fixing member 500 and the third fixing member 700, and is limited between the first fixing member 500 and the second fixing member 600. Through the guiding effect of the guide rail 520 and the guide channel 412, the operating part 410 is restricted to moving only along the guide channel 412, making the user's operation of the operating part 410 more stable and smooth.

[0074] The connection methods between the second fastener 600 and the substrate 200, between the substrate 200 and the first fastener 500, and between the third fastener 700 and the substrate 200 are not limited to threaded connection, snap-fit, riveting, etc.

[0075] 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, substrate; Two clamping arms are symmetrically arranged, and one end of each clamping arm is rotatably connected to the substrate; Two elastic elements are provided, each applied one-to-one to provide elastic force to one of the clamping arms. Each elastic element has a first end and a second end. The first end is connected to the clamping arm, and the second end is movably connected to the substrate. The second end has a first position and a second position. The elastic element is configured such that: when the second end is in the first position, at least a portion of the elastic element is located on the side of the two clamping arms facing each other, and provides an elastic force that brings the two clamping arms closer together; when the second end is in the second position, at least a portion of the elastic element is located on the side of the two clamping arms facing away from each other, and provides an elastic force that moves the two clamping arms away from each other. A drive mechanism is connected to the second end and is used to drive the second end to switch between the first position and the second position.

2. The clamping bracket according to claim 1, characterized in that, The driving mechanism includes an operating part and a transmission part. The second end is slidably disposed on the substrate. The two ends of the transmission part are respectively connected to the operating part and the second end. The operating part is rotatably disposed on the substrate. The second end can slide relative to the substrate following the rotation of the operating part. Alternatively, the driving mechanism includes an operating part and a transmission part, the second end is slidably disposed on the substrate, the operating part and the transmission part are both rotatably disposed on the substrate, the operating part and the transmission part are peripherally engaged, the second end is connected to the transmission part and is eccentrically disposed relative to the rotation center of the transmission part, and the second end can slide relative to the substrate following the rotation of the operating part; Alternatively, the driving mechanism includes an operating part connected to the second end, the second end being slidably disposed on the substrate, and the second end being able to slide relative to the substrate following the movement of the operating part.

3. The clamping bracket according to claim 1, characterized in that, The driving mechanism includes an operating part and two transmission parts. Each transmission part includes a transmission wheel and a sector wheel. Both the transmission wheel and the sector wheel are rotatably connected to the base plate, and the circumference of the transmission wheel meshes with the circumference of the sector wheel. The second end is connected to the sector wheel and is eccentrically disposed relative to the rotation center of the sector wheel. One of the transmission wheels meshes with the circumference of the operating part and rotates with the rotation of the operating part. The circumferences of the two transmission wheels mesh with each other. The second ends of the two elastic members can slide synchronously relative to the base plate with the rotation of the operating part. Alternatively, the driving mechanism includes an operating part and a transmission part connected together. Guide surfaces are symmetrically arranged on opposite sides of the transmission part. The second end and the transmission part are both slidably disposed on the substrate. The second ends of the two elastic members are respectively located on opposite sides of the transmission part and abut against the guide surfaces. The second ends of the two elastic members can slide synchronously relative to the substrate following the movement of the operating part. The distance between the two guide surfaces gradually decreases along the sliding direction in which the transmission part drives the second end to switch to the second position. Alternatively, the driving mechanism includes an operating part and two transmission parts. The operating part and the second end are slidably disposed on the substrate. One end of each of the two transmission parts is rotatably connected to the operating part, and the other end is respectively connected to the second end of the two elastic members. The transmission parts can move with the movement of the operating part and drive the second ends of the two elastic members to slide synchronously relative to the substrate.

4. The clamping bracket according to claim 1, characterized in that, The driving mechanism includes an operating part and two transmission parts. The operating part and the second end are slidably disposed on the substrate. One end of each of the two transmission parts is rotatably connected to the operating part, and the other end is respectively connected to the second end of the two elastic members. The transmission parts can move with the movement of the operating part and drive the second ends of the two elastic members to slide synchronously relative to the substrate. The clamping bracket further includes a first fixing member, which is fixedly connected to the base plate. The operating part is slidably connected to the first fixing member. The first fixing member is provided with a guide groove, and the operating part is provided with a guide pin. The guide pin is slidably connected in the guide groove and rotatably connected to the transmission part.

5. The clamping bracket according to claim 1, characterized in that, The driving mechanism includes a movable pin, the substrate has a first groove, the movable pin is slidably disposed in the first groove, the second end is connected to the movable pin, and when the movable pin moves to both ends of the first groove, the second end is respectively located at the first position and the second position.

6. The clamping bracket according to claim 5, characterized in that, The substrate has a limiting groove, the clamping arm has a limiting post, the limiting post is slidably disposed in the limiting groove, the first end is connected to the limiting post, and when the moving pin moves to the end of the first sliding groove, the limiting post moves to the end of the limiting groove.

7. The clamping bracket according to claim 5, characterized in that, The clamping bracket further includes a first fixing member, which is stacked with the substrate. The elastic member is located between the first fixing member and the substrate. The driving mechanism is located on the side of the first fixing member facing away from the substrate. The first fixing member is provided with a through second sliding groove. The projection of the first sliding groove and the second sliding groove along the arrangement direction of the first fixing member and the substrate coincides. The movable pin is slidably disposed in the first sliding groove and the second sliding groove.

8. The clamping bracket according to claim 6, characterized in that, Both the first sliding groove and the limiting groove are arc-shaped, and the centers of the first sliding groove and the limiting groove are located between the first sliding groove and the limiting groove. Alternatively, both the first slide groove and the limiting groove are arc-shaped, with the center of the limiting groove located between the first slide groove and the limiting groove, and the center of the first slide groove located on the side of the first slide groove facing away from the limiting groove.

9. The clamping bracket according to claim 8, characterized in that, The line connecting the center of the limiting groove and the center of the first sliding groove is the center line, and both the limiting groove and the first sliding groove are symmetrical with respect to the center line. Alternatively, the line connecting the center of the limiting groove and the center of the first sliding groove is the center line, the angle between the line connecting the end of the limiting groove and the center of the first sliding groove and the center line is the first angle, the angle between the line connecting the end of the first sliding groove and the center of the limiting groove and the center line is the second angle, and the first angle is not greater than the second angle.

10. The clamping bracket according to claim 1, characterized in that, The clamping bracket further includes a first fixing member, a second fixing member, and a third fixing member stacked with the substrate. The second fixing member and the third fixing member are located on opposite sides of the substrate. The driving mechanism and the first fixing member are located between the substrate and the third fixing member. Part of the clamping arm is located between the second fixing member and the substrate, and part of the clamping arm extends to the side of the substrate.

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