Release structure of a softbox chuck

Abstract

A softbox chuck unlocking structure comprising a pressure plate (2) arranged in a chuck (1) which presses the locking mechanism to unlock it, and a knob (3) on the chuck (1), characterized in that the inner end of the knob (3) inside the chuck (1) is hinged to the chuck (1) and the outer end outside the chuck (1) is a finger pressing part, wherein the pressure plate (2) and the knob (3) abut each other, wherein the pressure plate (2) is moved by rotating the knob (3) and unlocks the locking mechanism, and wherein the distance from the contact point of the pressure plate (2) and the knob (3) to the hinge point of the knob (3) is smaller than the distance from the finger pressing part to the hinge point of the knob (3).

Description

Technical area

[0001] The invention relates to the field of softboxes, in particular to a release structure of a softbox chuck. State of the art

[0002] Chinese Patent Publication No. CN220913486U, titled "Chuck Structure and Softbox," discloses a chuck structure in which the chuck is equipped with a locking mechanism that can lock each second rod individually and release the locking state of all second rods simultaneously. It includes a plurality of jaws and elastic members used to press the corresponding jaws to maintain the locking state. All jaws are connected to a pressure plate. A knob is fixedly connected to the pressure plate. When the knob is pressed toward the handle, the pressure plate moves. The pressure plate moves all jaws simultaneously, thus achieving simultaneous unlocking.

[0003] In order to enable each jaw to individually lock the second rod, the aforementioned release mechanism provides each jaw with an elastic element, resulting in a large number of elastic elements in the entire chuck structure. Furthermore, the elastic force generated by the deformation of multiple rods after locking increases the friction between the jaws and the pressure plate, resulting in significant resistance when the finger presses the release button during actual use, making it difficult to operate and affecting the use effect. Task of the invention

[0004] To overcome the deficiencies of the prior art, the invention provides an unlocking structure of a softbox chuck that is labor-saving to unlock and smooth to operate.

[0005] This object is achieved by the unlocking structure of a softbox chuck, which comprises a pressure plate arranged in a chuck, which presses the locking mechanism in order to unlock it, and a knob on the chuck, wherein the inner end of the knob inside the chuck is hinged to the chuck and the outer end outside the chuck is a finger pressure part, wherein the pressure plate and the knob abut each other, wherein the pressure plate is moved by turning the knob and unlocks the locking mechanism, and wherein the distance from the contact point of the pressure plate and the knob to the hinge point of the knob is smaller than the distance from the finger pressure part to the hinge point of the knob.

[0006] In a further improvement, the chuck is also equipped with a handle, wherein when the finger pressure part of the knob is pressed towards the handle, the knob is rotated, thereby moving the pressure plate so that the locking mechanism is unlocked.

[0007] In a further improvement, the direction of movement of the pressure plate coincides with the direction of rotation of the finger pressure part when unlocking.

[0008] In a further improvement, the button has a pressing surface and the pressing plate has a pressed surface, wherein the pressing surface and the pressed surface abut each other, and wherein the contact point of the pressing surface and the pressed surface is located between the finger pressing part and the hinge point of the button.

[0009] In a further improvement, a first projection is provided on the underside of the button and a second projection is provided on the outside of the pressure plate, wherein the opposite side surfaces of the first projection and the second projection form the pressure surface and the pressed surface.

[0010] In a further improvement, when unlocking, the direction of movement of the pressure plate is opposite to the direction of rotation of the finger pressure part.

[0011] In a further improvement, the button has a pressing surface and the pressing plate has a pressed surface, the pressing surface and the pressed surface being in contact with each other, and the hinge point of the button being located between the contact point of the pressing surface and the pressed surface and the finger pressing part.

[0012] In a further improvement, a first projection is provided on the button and a second projection is provided on the inside of the pressure plate, wherein the opposite side surfaces of the first projection and the second projection form the pressure surface and the pressed surface.

[0013] In a further improvement, the finger pressure part is provided with a concave arc surface on the side surface for finger contact.

[0014] The advantages of the invention are as follows: When the finger-pressing part of the knob is pressed during unlocking, the pressure plate in contact with it is moved when the knob is rotated, thereby unlocking the locking mechanism. Since the distance from the contact point of the pressure plate and the knob to the knob's hinge point is smaller than the distance from the finger-pressing part to the knob's hinge point, the force required by the finger to press the button to unlock is less than the force required to directly press the pressure plate to move it. This overcomes the greater unlocking resistance, making the unlocking process more effortless and smooth. Short description of the drawings Fig. 1 is an exploded view of an embodiment of the invention, Fig. 2 an enlarged view of zone A in Fig. 1, Fig. 3 is a view of the joint of the knob and the chuck of the embodiment of the invention, Fig. 4 is a view of part of another embodiment of the invention. Description of the preferred embodiments

[0015] The following provides a clear and complete description of the concept, specific structure, and technical effects of the present invention, in combination with the embodiments and drawings, to fully understand the purpose, characteristics, and effects of the present invention. The various technical features of the invention can be interactively combined to form new embodiments without conflicting with each other.

[0016] As in the Fig. 1 to 4, the unlocking structure of a softbox chuck includes a chuck 1. A locking mechanism is provided in the chuck 1. The locking mechanism includes a plurality of jaws 4 and a plurality of corresponding springs 5. Each jaw 4 can individually lock a corresponding softbox rod. The chuck 1 is further equipped with a pressure plate 2 and a knob 3. The pressure plate 2 is connected to a plurality of jaws 4. When the knob 3 is pressed to move the pressure plate 2, all of the jaws 4 can be moved simultaneously, thereby achieving unlocking. After that, the plurality of springs 5 ​​simultaneously push the plurality of jaws 4 and the pressure plate 2 back to their original positions.

[0017] The superposition of the elastic forces of multiple springs and the elastic force generated by the deformation of the softbox rods after opening increases the kinetic friction of the clamping jaws 4 and the pressure plate 2, significantly increasing the resistance when pressing the release button 3. In the prior art, the button 3 and the pressure plate 2 are a one-piece structure. When pressing the button 3 directly, the resistance is relatively high, so the release does not occur smoothly.

[0018] In view of the problems existing in the prior art, the knob 3 and the pressure plate 2 are designed as a separate structure. The inner end of the knob 3 inside the chuck 1 is pivotally connected to the chuck 1, and the outer end outside the chuck 1 is a finger pressure part. The pressure plate 2 and the knob 3 abut each other. At the same time, the distance from the contact point m of the pressure plate 2 and the knob 3 to the pivot point p of the knob 3 is smaller than the distance from the finger pressure part n to the pivot point p of the knob 3, that is, the force arm mp < np. In this way, when the finger pressure part is pressed, the knob 3 is rotated with less force, thereby overcoming the resistance and moving the pressure plate 2 more smoothly, so that the clamping jaws 4 are unlocked.

[0019] The chuck 1 is also equipped with a handle 11 for conveniently pressing the knob 3. When the finger pressure part is pressed toward the handle 11, the knob 3 is rotated, causing the pressure plate 2 to move, thus unlocking the locking mechanism.

[0020] In one embodiment, the direction of movement of the pressure plate 2 coincides with the direction of rotation of the finger pressure part of the button 3 during unlocking. As in Fig. 2, when unlocking, the finger pressure part of the button 3 is turned to the right towards the handle 11, which simultaneously moves the pressure plate 2 to the right. As shown in Fig. 2, the clamping section 41 of the clamping jaw 4 for clamping the rod is located on the left side of the clamping jaw 4. The pressure plate must be moved to the right to unlock it.

[0021] In the above embodiment, a first protrusion 31 is provided on the underside of the knob 3, and a second protrusion 21 is provided on the outer side of the pressure plate 2. Here, the area near the center of the chuck 1 is defined as the inner side, and the area far from the center of the chuck 1 is defined as the outer side. The opposite side surfaces of the first protrusion 31 and the second protrusion 21 form a pressing surface and a pressed surface. Under the action of the spring 5, the pressure plate 2 and the knob 3 are closely abutted against each other, so that the pressed surface of the second protrusion 21 and the pressing surface of the first protrusion 31 remain in contact. When the knob 3 is rotated, the pressing force is transmitted through the pressing surface and the pressed surface to press the pressure plate 2. During this operation, the pressing surface and the pressed surface are displaced together.The contact point m of the pressure surface and the pressed surface is located between the finger pressure part n and the hinge point p of the button 3, so that the distance from the contact point m to the hinge point p is smaller than the distance from the finger pressure part n to the hinge point p, whereby the force arm mp < np, so that an effortless unlocking process is ensured.

[0022] In another embodiment, when unlocking, the direction of movement of the pressure plate 2 is opposite to the direction of rotation of the finger pressure part of the button 3. As in Fig. 4, when unlocking, the finger pressure part of the button 3 is turned to the right towards the handle 11, whereby the pressure plate 2 is moved to the left. As shown in Fig. 4, the clamping section 41 of the clamping jaw 4 for clamping the rod is located on the right side of the clamping jaw 4. The pressure plate must be moved to the left to unlock.

[0023] In this embodiment, the inner end of the knob 3 extends toward the inside of the chuck 1 and protrudes from the inside of the pressure plate 2. A first projection 31 is provided on the extending portion of the knob 3, and a second projection 21 is provided on the inside of the pressure plate 2. The opposite side surfaces of the first projection 31 and the second projection 21 form a pressing surface and a pressed surface. Under the action of the spring 5, the pressure plate 2 and the knob 3 closely abut each other, so that the pressed surface of the second projection 21 and the pressing surface of the first projection 31 remain in contact. The hinge point of the knob p is located between the contact point m of the pressing surface and the pressed surface and the finger pressing part n. When the finger pressing part n is rotated to the right, the contact point m is shifted to the left.In addition, the distance from the contact point m to the joint point p is smaller than the distance from the finger pressure part n to the joint point p, whereby the force arm mp < np, thus ensuring an effortless unlocking process.

[0024] In the above embodiments, the finger-pressing part is provided with a concave arcuate surface on the side surface for finger contact. During operation, the concave arcuate surface conforms to the finger, making pressing more comfortable.

[0025] It should be noted that the above merely further explains the present invention in combination with the embodiments and does not limit the scope of the present invention. If simple modifications are made to the present technology, they are merely intended to achieve the purpose of the invention with basically the same means, and they should all fall within the scope of the present invention. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 220913486U

[0002] Cited non-patent literature

[0000] Chuck structure and softbox

[0002]

Claims

[1] A softbox chuck unlocking structure comprising a pressure plate (2) arranged in a chuck (1) which presses the locking mechanism to unlock it, and a button (3) on the chuck (1), characterized by that the inner end of the knob (3) inside the chuck (1) is pivotally connected to the chuck (1) and the outer end outside the chuck (1) is a finger pressure part, wherein the pressure plate (2) and the knob (3) bear against one another, wherein the pressure plate (2) is moved by turning the knob (3) and unlocks the locking mechanism, and wherein the distance from the contact point of the pressure plate (2) and the knob (3) to the pivot point of the knob (3) is smaller than the distance from the finger pressure part to the pivot point of the knob (3). [2] A softbox chuck release structure according to claim 1, characterized bythat the chuck (1) is further provided with a handle (11), wherein when the finger pressure part of the knob (3) is pressed towards the handle (11), the knob is rotated, whereby the pressure plate (2) is moved along, so that the locking mechanism is unlocked. [3] Unlocking structure of a softbox chuck according to claim 2, characterized by that when unlocking, the direction of movement of the pressure plate (2) corresponds to the direction of rotation of the finger pressure part. [4] Unlocking structure of a softbox chuck according to claim 3, characterized by that the button (3) has a pressure surface and the pressure plate (2) has a pressed surface, wherein the pressure surface and the pressed surface abut one another and wherein the contact point of the pressure surface and the pressed surface is located between the finger pressure part and the articulation point of the button (3). [5] Unlocking structure of a softbox chuck according to claim 4, characterized by that a first projection (31) is provided on the underside of the button (3) and a second projection (21) is provided on the outside of the pressure plate (2), wherein the opposite side surfaces of the first projection (31) and the second projection (21) form the pressure surface and the pressed surface. [6] Unlocking structure of a softbox chuck according to claim 2, characterized by that when unlocking, the direction of movement of the pressure plate (2) is opposite to the direction of rotation of the finger pressure part. [7] Unlocking structure of a softbox chuck according to claim 6, characterized by that the button (3) has a pressure surface and the pressure plate (2) has a pressed surface, wherein the pressure surface and the pressed surface abut one another and wherein the articulation point of the button (3) is located between the contact point of the pressure surface and the pressed surface and the finger pressure part. [8] Unlocking structure of a softbox chuck according to claim 7, characterized by that a first projection (31) is provided on the button (3) and a second projection (21) is provided on the inside of the pressure plate (2), wherein the opposite side surfaces of the first projection (31) and the second projection (21) form the pressure surface and the pressed surface. [9] Unlocking structure of a softbox chuck according to one of claims 1 to 8, characterized by that the finger pressure part is provided with a concave arc surface on the side surface for finger contact.

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