Compact hook-type hold-down mechanism

Abstract

The utility model relates to a compact hook-shaped pressing mechanism and relates to the field of tool fixtures. The technical scheme comprises a body, the centre of which has a central through hole arranged along the axial direction, and the side wall of which has a long waist hole arranged along the axial direction; an end cover, which is installed at the bottom end of the body and is threadedly connected with the bottom end of the central through hole; an elastic sliding assembly, which is slidably arranged in the central through hole, the bottom end of which is elastically connected with the end cover, a hook-shaped pressing plate is fixed on the elastic sliding assembly, and the pressing end of the hook-shaped pressing plate extends to the outside of the body through the long waist hole; and an adjusting assembly, which is adjustably arranged at the top end of the body, the adjusting end of which abuts against the top end of the elastic sliding assembly. In this case, a compact hook-shaped pressing scheme capable of meeting the installation and use requirements in a small space range is provided, and the hook-shaped pressing plate will not be stuck under the cooperation of the elastic sliding assembly and the adjusting assembly.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a compact hook-shaped clamping mechanism. Background Technology

[0002] In the current field of mechanical clamping, hook-type clamping mechanisms generally suffer from excessively large structural dimensions. In actual assembly and application, these mechanisms often require a lot of space. As modern equipment develops towards miniaturization and compactness, many scenarios have increasingly stringent requirements for space utilization. The large volume of existing hook-type clamping mechanisms is no longer suitable for such small-space operating environments. Therefore, there is an urgent need in the industry for a compact hook-type clamping solution that can meet the installation and use requirements in small spaces.

[0003] In addition to the size issue, existing hook-shaped clamping mechanisms also suffer from insufficient operational stability. Because the force is concentrated on one side during the clamping process of the hook-shaped pressure plate, the overall force of the mechanism is easily uneven, which in turn causes abnormal friction, jamming, or misalignment between moving parts, ultimately leading to jamming. This problem not only affects the smoothness of the clamping operation but may also reduce the service life of the mechanism and even adversely affect the machining accuracy or assembly quality of the clamped workpiece. Summary of the Invention

[0004] The purpose of this invention is to provide a compact hook-shaped clamping mechanism to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A compact hook-shaped clamping mechanism includes: The body has a central through hole arranged along the axial direction at its center, and an elongated hole arranged along the axial direction on its side wall. The elongated hole is connected to the central through hole, and the two ends of the central through hole have internal threads. An end cap, which is installed at the bottom end of the body, has external threads and is threaded to the bottom end of the central through hole; An elastic sliding assembly is slidably disposed within the central through hole, its bottom end being elastically connected to the end cap; a hook-shaped pressure plate is fixed to the elastic sliding assembly, and the pressing end of the hook-shaped pressure plate extends to the outside of the body through the elongated slot; and An adjustment component is adjustablely disposed at the top of the body, and its adjustment end abuts against the top of the elastic sliding component. When the adjustment component is in the adjustment state, the elastic sliding component can drive the hook-shaped pressure plate to move along the elongated waist hole.

[0006] In some embodiments, the elastic sliding component includes: The lower guide post is slidably disposed in the central through hole and has an inner through hole for the fixing bolt to pass through; An upper guide post, slidably disposed within the central through hole, has an internally threaded hole for threaded connection with the fixing bolt; and A return spring is disposed between the lower guide post and the end cap; The fixing bolt passes through the inner through hole of the lower guide post and is threadedly connected to the inner threaded hole of the upper guide post. The hook-shaped pressure plate is fixed on the fixing bolt and is located between the upper guide post and the lower guide post.

[0007] In some embodiments, the adjustment component includes: A flange threaded sleeve, which is installed at the top of the body, has external threads and is threadedly connected to the top of the central through hole; and An adjusting bolt is threaded into the internal threaded hole of the flange sleeve and extends into the central through hole to abut against the top of the upper guide post.

[0008] In some embodiments, the compact hook-shaped clamping mechanism further includes: A protective sleeve is movably fitted around the outer periphery of the body, and its sidewall has an adapter hole through which the pressing end of the hook-shaped pressure plate passes. When the hook-shaped pressure plate is in a moving state, the protective sleeve can follow its displacement.

[0009] In some embodiments, the bottom end of the body has a mounting portion that is adapted to a threaded hole corresponding to an external worktable, so as to realize the installation and fixation of the compact hook-shaped clamping mechanism.

[0010] In some embodiments, the mounting portion includes an externally threaded portion located at the bottom end of the body, and a locking nut is threaded onto the externally threaded portion.

[0011] In some embodiments, the top of the body has a flattened drive section, which facilitates the application of circumferential driving force to the compact hook-shaped clamping mechanism by external tools to cooperate with the installation and fixation of the mounting section.

[0012] The beneficial effects of the technical solution provided by this utility model include at least the following: This technical solution includes a body with a central through hole arranged axially at its center and an elongated slotted hole arranged axially on its sidewall, the elongated slotted hole communicating with the central through hole. Both ends of the central through hole have internal threads. An end cap, mounted on the bottom of the body, has external threads and is threadedly connected to the bottom end of the central through hole. An elastic sliding assembly, slidably disposed within the central through hole, has its bottom end elastically connected to the end cap. A hook-shaped pressure plate is fixed to the elastic sliding assembly, and the pressing end of the hook-shaped pressure plate extends to the outside of the body through the elongated slotted hole. An adjusting assembly, adjustablely disposed at the top of the body, has its adjusting end abutting against the top of the elastic sliding assembly. When the adjusting assembly is in the adjusting state, the elastic sliding assembly can drive the hook-shaped pressure plate to move along the elongated slotted hole. In this configuration, a compact hook-shaped clamping solution is provided that meets the installation and use requirements of small spaces, and the hook-shaped pressure plate will not jam under the cooperation of the elastic sliding assembly and the adjusting assembly. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] Figure 1 This is a front view schematic diagram of a compact hook-shaped clamping mechanism provided in an exemplary embodiment of the present invention.

[0015] Figure 2 It shows Figure 1 A schematic diagram of the AA-direction section.

[0016] Figure 3 This is a front view schematic diagram of the body of a compact hook-shaped clamping mechanism provided in an exemplary embodiment of the present invention.

[0017] Figure 4 It shows Figure 3 A schematic diagram of the AA-direction section.

[0018] In the picture: 1. Body; 101. Central through hole; 102. Long slotted hole; 103. External threaded part; 104. Locking nut; 105. Drive part; 2. End cap; 3. Elastic sliding assembly; 301. Lower guide post; 302. Fixing bolt; 303. Upper guide post; 304. Return spring; 4. Hook-shaped pressure plate; 5. Adjusting assembly; 501. Flange sleeve; 502. Adjusting bolt; 6. Protective sleeve; 601. Adapter hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

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

[0022] Please see Figures 1 to 4 The compact hook-shaped clamping mechanism includes: a body 1, which has a central through hole 101 arranged axially at its center and an elongated slotted hole 102 arranged axially on its side wall, the elongated slotted hole 102 communicating with the central through hole 101, and the two ends of the central through hole 101 having internal threads; an end cap 2, which is installed at the bottom end of the body 1, has external threads, and is threadedly connected to the bottom end of the central through hole 101; an elastic sliding component 3, which is slidably disposed in the central through hole 101, and its bottom end is elastically connected to the end cap 2; a hook-shaped pressure plate 4 is fixed on the elastic sliding component 3, and the pressing end of the hook-shaped pressure plate 4 extends to the outside of the body 1 through the elongated slotted hole 102; and an adjusting component 5, which is adjustablely disposed at the top end of the body 1, and its adjusting end abuts against the top end of the elastic sliding component 3; wherein, when the adjusting component 5 is in the adjusting state, the elastic sliding component 3 can drive the hook-shaped pressure plate 4 to move along the elongated slotted hole 102.

[0023] In this embodiment, the elongated sidewall hole 102 allows the hook-shaped pressure plate 4 to extend out and act on the workpiece, and also limits the displacement of the hook-shaped pressure plate 4. The end cap 2 is connected to the body 1 via an external thread, and provides elastic support for the elastic sliding component 3. The elastic sliding component 3 can slide along the central through hole 101, driving the hook-shaped pressure plate 4 to complete the pressing or releasing action. The adjusting component 5 adjusts the displacement by abutting the top of the elastic sliding component 3, and precisely controls the pressing force. The overall structure avoids the problem of large volume of traditional mechanisms, and through the coordinated transmission of each component, it avoids jamming caused by unilateral force on the hook-shaped pressure plate 4.

[0024] For details, please refer to Figure 2 The elastic sliding assembly 3 includes: a lower guide post 301, which is slidably disposed in the central through hole 101 and has an inner through hole through which the fixing bolt 302 passes; an upper guide post 303, which is slidably disposed in the central through hole 101 and has an inner threaded hole that is threadedly connected to the fixing bolt 302; and a return spring 304, which is disposed between the lower guide post 301 and the end cap 2; wherein, the fixing bolt 302 passes through the inner through hole of the lower guide post 301 and is threadedly connected to the inner threaded hole of the upper guide post 303, and the hook-shaped pressure plate 4 is fixed on the fixing bolt 302 and located between the upper guide post 303 and the lower guide post 301.

[0025] In this embodiment, the lower guide post 301 is slidably disposed in the central through hole 101, the inner through hole providing a passage for the fixing bolt 302; the upper guide post 303 is threadedly connected to the fixing bolt 302 through an internal threaded hole, so that the upper and lower guide posts form a synchronous sliding whole; the reset spring 304 is disposed between the lower guide post 301 and the end cover 2, and can provide elastic restoring force when the adjusting component 5 is loosened, driving the elastic sliding component 3 and the hook-shaped pressure plate 4 to reset, thereby realizing the workpiece loosening action; the fixing bolt 302 not only connects the upper and lower guide posts, but also fixes the hook-shaped pressure plate 4 between the two, ensuring that the hook-shaped pressure plate 4 moves synchronously and stably with the elastic sliding component 3, avoiding unilateral force deviation.

[0026] For more details, please refer to Figure 1 and Figure 2 The adjusting assembly 5 includes: a flange threaded sleeve 501, which is installed on the top of the body 1 and has an external thread that is threaded to the top of the central through hole 101; and an adjusting bolt 502, which is threaded to the internal threaded hole of the flange threaded sleeve 501 and extends into the central through hole 101 to abut against the top of the upper guide post 303.

[0027] In this embodiment, the adjusting bolt 502 is threadedly engaged with the flange sleeve 501. When rotating, it can move forward and backward along the axial direction. It extends into the central through hole 101 and abuts against the top of the upper guide post 303. It can convert the rotational motion into axial thrust, push the upper guide post 303 to drive the elastic sliding component 3 to move, thereby adjusting the clamping force and position of the hook-shaped pressure plate 4.

[0028] Specifically, please refer to Figure 1 The compact hook-shaped clamping mechanism also includes a protective sleeve 6, which is movably sleeved on the outer periphery of the body 1, and its side wall has an adapter hole 601 through which the pressing end of the hook-shaped pressure plate 4 passes; wherein, when the hook-shaped pressure plate 4 is in a moving state, the protective sleeve 6 can follow its displacement and ensure that it always covers the elongated hole 102.

[0029] In this embodiment, the protective sleeve 6 is movably fitted around the outer periphery of the body 1 and can move synchronously with the hook-shaped pressure plate 4. This not only does not obstruct the pressing and adjusting action but also prevents impurities from entering the central through hole 101 inside the body 1 through the elongated slot 102, thus preventing components such as the elastic sliding assembly 3 from being jammed by impurities and affecting normal operation. The adapter hole 601 on the side wall of the protective sleeve 6 provides an extension channel for the pressing end of the hook-shaped pressure plate 4, ensuring that the hook-shaped pressure plate 4 can function normally on the workpiece.

[0030] For more details, please refer to Figure 1 and Figure 3 The bottom end of the body 1 has a mounting portion that mates with a threaded hole corresponding to an external worktable, thereby enabling the installation and fixation of the compact hook-shaped clamping mechanism. The mounting portion includes an external threaded portion 103 located at the bottom end of the body 1, on which a locking nut 104 is threadedly connected. The top end of the body 1 has a flat-structured drive portion 105, which facilitates the application of circumferential driving force to the compact hook-shaped clamping mechanism by external tools to facilitate the installation and fixation of the mounting portion.

[0031] In this embodiment, the external threaded portion 103 can be directly fitted to the corresponding threaded hole of the external worktable, providing assembly support for the mechanism and achieving initial fixation; the matching locking nut 104 is locked through a threaded connection, which can prevent loosening of the installation and enhance the reliability of the fixation. The flat-structured drive portion 105 is adapted to external tools such as wrenches, which can conveniently apply circumferential driving force to assist the external threaded portion 103 in screwing into the threaded hole of the worktable, solving the problem of insufficient manual force or slippage.

[0032] Next, the working principle of a compact hook-shaped clamping mechanism involved in the embodiments of this utility model will be explained.

[0033] Align the external threaded part 103 of the main body 1 with the corresponding threaded hole of the external worktable, use a wrench or other tools to clamp the flat drive part 105 at the top of the main body 1, apply circumferential driving force to screw the external threaded part 103 into the threaded hole of the worktable to complete the initial fixation, and then tighten the locking nut 104 on the external threaded part 103 to enhance the installation stability. When it is necessary to clamp the workpiece, rotate the adjusting bolt 502 of the adjusting assembly 5 so that it moves axially downward along the internal thread of the flange sleeve 501. After the adjusting bolt 502 moves down, it abuts against the top of the upper guide post 303, converting the rotational motion into axial thrust, and pushing the upper guide post 303 to slide downward along the central through hole 101. Since the upper guide post 303 is connected to the fixing bolt 302 through the internal threaded hole, and the fixing bolt 302 passes through the internal through hole of the lower guide post 301, the three form a synchronous motion whole. Therefore, the upper guide post 303 drives the lower guide post 301 to move down synchronously, and the lower guide post 301 compresses the return spring 304 between the bottom end and the end cover 2. At the same time, the fixing bolt 302 drives the hook-shaped pressure plate 4 on its outer side to move down along the long waist hole 102 on the side wall of the body 1. The pressing end of the hook-shaped pressure plate 4 presses the workpiece. During this process, the long waist hole 102 limits the displacement of the hook-shaped pressure plate 4 to avoid unilateral force deviation or jamming. When it is necessary to release the workpiece, rotate the adjusting bolt 502 in the opposite direction so that it retracts upward along the flange sleeve 501. At this time, the compressed return spring 304 releases its elastic force and pushes the lower guide post 301 upward, which in turn drives the fixing bolt 302, the upper guide post 303 and the hook-shaped pressure plate 4 to move upward along the central through hole 101 and the long waist hole 102 simultaneously. The pressing end of the hook-shaped pressure plate 4 is separated from the workpiece, and the reset is completed.

[0034] In summary, this technical solution includes a body having a central through hole arranged axially at its center and an elongated slotted hole arranged axially on its sidewall, the elongated slotted hole communicating with the central through hole, both ends of the central through hole having internal threads; an end cap, installed at the bottom end of the body, having external threads, and threadedly connected to the bottom end of the central through hole; an elastic sliding assembly, slidably disposed within the central through hole, its bottom end elastically connected to the end cap, a hook-shaped pressure plate fixed to the elastic sliding assembly, the pressing end of the hook-shaped pressure plate extending to the outside of the body through the elongated slotted hole; and an adjusting assembly, adjustablely disposed at the top end of the body, its adjusting end abutting against the top end of the elastic sliding assembly; wherein, when the adjusting assembly is in the adjusting state, the elastic sliding assembly can drive the hook-shaped pressure plate to move along the elongated slotted hole. In this case, a compact hook-shaped clamping solution is provided that can meet the installation and use requirements in small spaces, and the hook-shaped pressure plate will not jam under the cooperation of the elastic sliding assembly and the adjusting assembly.

[0035] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A compact hook-shaped clamping mechanism, characterized in that, include: The body (1) has a central through hole (101) arranged along the axial direction at its center and an elongated waist hole (102) arranged along the axial direction on its side wall. The elongated waist hole (102) is connected to the central through hole (101), and the two ends of the central through hole (101) have internal threads. End cap (2), which is installed at the bottom end of the body (1), has external threads and is threaded to the bottom end of the central through hole (101); An elastic sliding assembly (3) is slidably disposed within the central through hole (101), its bottom end being elastically connected to the end cap (2). A hook-shaped pressure plate (4) is fixed to the elastic sliding assembly (3), and the pressing end of the hook-shaped pressure plate (4) extends to the outside of the body (1) through the elongated slot (102); and Adjustment component (5), which is adjustablely disposed at the top of the body (1), and its adjustment end abuts against the top of the elastic sliding component (3); When the adjustment component (5) is in the adjustment state, the elastic sliding component (3) can drive the hook-shaped pressure plate (4) to move along the long waist hole (102).

2. The compact hook-shaped clamping mechanism according to claim 1, characterized in that, The elastic sliding component (3) includes: The lower guide post (301) is slidably disposed in the central through hole (101) and has an inner through hole through which the fixing bolt (302) passes; An upper guide post (303) is slidably disposed within the central through hole (101) and has an internally threaded hole for threaded connection with the fixing bolt (302); and A reset spring (304) is disposed between the lower guide post (301) and the end cap (2); The fixing bolt (302) passes through the inner through hole of the lower guide post (301) and is threadedly connected to the inner thread hole of the upper guide post (303). The hook-shaped pressure plate (4) is fixed on the fixing bolt (302) and located between the upper guide post (303) and the lower guide post (301).

3. The compact hook-shaped clamping mechanism according to claim 2, characterized in that, The adjustment component (5) includes: A flange threaded sleeve (501), which is installed on the top end of the body (1), has external threads and is threaded to the top end of the central through hole (101); and Adjusting bolt (502) is threaded to the internal threaded hole of the flange sleeve (501) and extends into the central through hole (101) to abut against the top of the upper guide post (303).

4. The compact hook-shaped clamping mechanism according to claim 1, characterized in that, The compact hook-shaped clamping mechanism also includes: The protective sleeve (6) is movably fitted around the outer periphery of the body (1), and its sidewall has an adapter hole (601) through which the pressing end of the hook-shaped pressure plate (4) passes. When the hook-shaped pressure plate (4) is in a moving state, the protective sleeve (6) can follow its displacement.

5. The compact hook-shaped clamping mechanism according to claim 1, characterized in that, The bottom end of the body (1) has a mounting part that is adapted to the threaded hole corresponding to the external workbench, so as to realize the installation and fixation of the compact hook-shaped clamping mechanism.

6. The compact hook-shaped clamping mechanism according to claim 5, characterized in that, The mounting part includes an external threaded part (103) located at the bottom end of the body (1), and a locking nut (104) is threaded onto the external threaded part (103).

7. The compact hook-shaped clamping mechanism according to claim 5, characterized in that, The top of the body (1) has a flat drive part (105) to facilitate the application of circumferential driving force to the compact hook-shaped clamping mechanism by external tools to cooperate with the installation and fixation of the mounting part.

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