Ratchet clamp

Abstract

The utility model discloses a ratchet wheel clamp, including first clamping arm, second clamping arm, first clamping arm with second clamping arm are connected through pivot and can rotate around pivot, be provided with ratchet wheel subassembly in the reserved installation department of first clamping arm, be provided with meshing linkage subassembly in the cooperation installation department of second clamping arm, and elastic piece is connected with meshing linkage subassembly with ratchet wheel subassembly simultaneously, when first clamping arm with second clamping arm rotate around pivot, meshing linkage subassembly with ratchet wheel subassembly cooperation realizes the clamping and release of ratchet wheel clamp, makes ratchet wheel chuck head 360 degree rotatable, adapts narrow space operation, expands the application scope of ratchet wheel clamp, the structure uses more flexible, avoids the problem of force angle deviation that exists in traditional intermediate shaft design simultaneously, hides ratchet wheel subassembly and meshing linkage subassembly in the space of clamping arm, and the integrity of ratchet wheel clamp is better.

Description

Technical Field

[0001] This utility model relates to the field of hand tool technology, and in particular to a ratchet clamp. Background Technology

[0002] Hand tools are small tools held by hand and used to work objects with human power or other human-controlled force. They are used for manual cutting and auxiliary decoration, and generally have handles for easy carrying. Pliers are a common type of hand tool used to clamp and hold workpieces or to twist, bend, and cut metal wires. Pliers used for clamping and holding workpieces are also called clamps or pliers.

[0003] Clamps or clamps are generally V-shaped and usually consist of two symmetrical clamping bodies that partially overlap and are riveted together. The clamps can be opened and closed flexibly using their riveting connection points as fulcrums. Their design incorporates the lever principle, which can convert a small external force (such as the hand force applied to the clamping arms) into a larger clamping force at the jaws, enabling the clamps to hold effectively.

[0004] In the prior art, such as the Chinese utility model patent with publication number CN2654283Y and utility model name "Adjustable Pressure Ratchet Clamp", an adjustable pressure ratchet clamp is disclosed, which consists of a lever arm device and a self-locking device. The lever arm device consists of two parts: a clamp head and a handle. The handle has a hollow groove inside. The self-locking device consists of a slide rod, a sliding sleeve, and a self-locking rod. One end of the slide rod is located in the front part of the handle groove and is connected by a hinge. One end of the sliding sleeve is located in the rear part of the other handle groove and is connected by a hinge. The other end of the slide rod is sleeved in the sliding sleeve, and a self-locking rod is provided between the slide rod and the sliding sleeve. The head of the self-locking rod is bent vertically upward and has a through hole. The slide rod passes through the through hole of the self-locking rod head, and the self-locking rod head is fixed to the end of the sliding sleeve. A compression spring is provided between the self-locking rod head and the sliding sleeve. Compared with the prior art, this utility model is equipped with a self-locking mechanism consisting of a sliding rod, a sliding sleeve, and a self-locking rod, which saves time and effort in clamping objects and ensures reliable clamping.

[0005] In the existing technology, the ratchet assembly of these ratchet clamps is set between the clamp arms, which not only has the problem of force application angle deviation, but also cannot adapt to operation in narrow spaces, and the use environment is limited. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies by providing a ratchet clamp that offers easier release, greater stability, and a large-angle rotating gripping part, making it suitable for operation in confined spaces.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a ratchet clamp, comprising a first clamping arm and a second clamping arm, the first clamping arm and the second clamping arm being connected by a rotating shaft and capable of rotating around the rotating shaft, a ratchet assembly being provided in a reserved mounting portion of the first clamping arm, and a meshing linkage assembly being provided in a mating mounting portion of the second clamping arm, an elastic element being connected to both the meshing linkage assembly and the ratchet assembly, and when the first clamping arm and the second clamping arm rotate around the rotating shaft, the meshing linkage assembly and the ratchet assembly cooperate to achieve the clamping and releasing of the ratchet clamp.

[0008] In the above technical solution, the first clamping arm includes a first hand-held part, a first clamping part, and a reserved mounting part located between the first hand-held part and the first clamping part. A mounting groove is provided at the position of the reserved mounting part, and a first rotating shaft connection hole is provided on the groove wall. The mounting part is arranged in the body of the clamping arm by utilizing the space, which is beneficial to improve space utilization and reduce the overall volume of the ratchet clamp.

[0009] In the above technical solution, the ratchet assembly includes a ratchet mounting seat disposed in the mounting groove, an arc-shaped rack disposed in the ratchet mounting seat, and the tooth surface of the arc-shaped rack is kept facing the direction of the second clamping arm. The ratchet mounting seat is provided with a connecting hole, and is coaxially disposed with the first rotating shaft connecting hole provided on the reserved mounting part.

[0010] In the above technical solution, the ratchet assembly includes a ratchet disposed in the mounting groove, and an arc-shaped rack is disposed on the working surface of the ratchet, with the tooth surface of the arc-shaped rack facing the direction of the second clamping arm.

[0011] In the above technical solution, the second clamping arm includes a second hand-held part, a second clamping part, and a connecting part located between the second hand-held part and the second clamping part. The connecting part has a through groove that allows the first clamping arm to pass through. A second rotating shaft connecting hole is provided on the groove wall of the through groove. The mating mounting part is located in a groove with open ends formed on the inner working surface of the second hand-held part.

[0012] In the above technical solution, a connecting shaft hole is provided on the groove wall.

[0013] In the above technical solution, the meshing linkage component includes a linkage block. The linkage block is provided with a first connecting part for ratchet block connection, a second connecting part that cooperates with the linkage handle, and a third limiting part that cooperates with the elastic element. The linkage block not only makes it easier to release after being subjected to force, but also ensures stability under repeated use.

[0014] In the above technical solution, the linkage handle and the second hand-held part are rotatably connected by a pin. The mating end of the linkage handle is inserted into the second connecting part of the linkage block to enable the linkage block to engage and move together. The working end of the linkage handle extends away from the ratchet block and maintains a space for movement between the linkage handle and the bottom of the groove.

[0015] In the above technical solution, the ratchet block is connected to the first connecting part by a shaft pin, and the ratchet on the ratchet block is engaged with the tooth surface of the arc-shaped rack in the working state to maintain the clamping state.

[0016] In the above technical solution, the mounting end of the elastic element is sleeved on the rotating shaft, and the extension end of the elastic element extends towards the linkage block and is limited by the third limiting part, which can realize the tactile force and assist in reset.

[0017] Compared with the prior art, the present invention has the following advantages: by setting the ratchet assembly and the meshing linkage assembly in the reserved mounting part of the first clamping arm and the mating mounting part of the second clamping arm respectively, and with the elastic element cooperating with both to realize the clamping and releasing of the ratchet clamp, the ratchet clamp head can rotate 360 ​​degrees, adapting to narrow space operations and expanding the applicability of the ratchet clamp; at the same time, compared with the central setting in the existing design, this structure is more flexible in use and avoids the problem of force application angle deviation in the traditional intermediate shaft design; from an overall perspective, the ratchet assembly and the meshing linkage assembly are hidden in the space of the clamping arm, making the ratchet clamp more integrated. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0021] Figure 3 This diagram illustrates the relationship between the ratchet assembly, the meshing linkage assembly, and the elastic components.

[0022] Figure 4 This is a schematic diagram of the exploded structure of the meshing linkage component.

[0023] Figure 5 This is a schematic diagram of the exploded structure of the ratchet assembly.

[0024] Figure 6 This is a schematic diagram of the first clamping arm structure. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0027] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0028] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0029] See Figures 1 to 6 A ratchet clamp includes a first clamping arm 1 and a second clamping arm 2. The first clamping arm 1 and the second clamping arm 2 are connected by a pivot 3 and use this pivot as a fulcrum to clamp objects.

[0030] Of course, to achieve the clamping or releasing state, it is necessary to work together with the ratchet assembly 4, the engagement linkage assembly 5, and the elastic element 6, as shown in the following structure.

[0031] The first clamping arm 1 includes a first hand-held part 12, a first clamping part 13, and a reserved mounting part 11, which are integrated into one piece. The outer working surface of the first hand-held part 12 is also provided with a protective layer to prevent slippage during use. The reserved mounting part 11 is actually a mounting groove opened inside the transition section between the first hand-held part 12 and the first clamping part 13, which utilizes the existing space to achieve hidden installation of the component. The arrangement direction of the first clamping part 13 is roughly parallel to the first hand-held part 12. A first clamping head 131 is provided at the working end of the first clamping part 13. In order to form a lever principle, it is obvious that the transition section is inclined relative to the first hand-held part 12 and the first clamping part 13, which makes the direction of the mounting groove opening closer to the direction of the second clamping arm 2.

[0032] To enable the first clamping arm 1 and the second clamping arm 2 to be rotatably connected via the rotating shaft 3, a first rotating shaft connection hole 111 is provided on the wall of the mounting groove. Of course, this first rotating shaft connection hole 111 is symmetrically arranged on the two groove walls so that the rotating shaft 3 can pass through it.

[0033] The purpose of the reserved mounting section 11 is mainly for the concealed installation of the ratchet assembly 4.

[0034] The ratchet assembly 4 includes a ratchet mounting base 41 and an arc-shaped rack 42 with a circular arc surface on its working surface. Of course, in order to ensure that the rotating shaft 3 can pass through the first clamping arm 1, both ears of the ratchet mounting base 41 are provided with connecting holes 411, and are kept coaxial with the first rotating shaft connecting hole 111 provided on the reserved mounting part 11. A gap is reserved between the two ears for the installation of the elastic element 6.

[0035] The front working end of the ratchet mounting base 41 is provided with a groove for mounting the arc-shaped rack 42. Of course, to match the arc-shaped rack 42 with a circular arc surface, the working surface of the groove opening is also an arc surface with the same curvature as the arc-shaped rack 42. After installation, the tooth surface of the arc-shaped rack 42 faces the direction of the second clamping arm 2.

[0036] Of course, in order to simplify the structure, the ratchet assembly 4 may only include a ratchet set in the mounting slot. The working surface of the ratchet is provided with an arc-shaped rack, and the tooth surface of the arc-shaped rack is kept facing the direction of the second clamping arm. The ratchet is provided with a connecting shaft hole, and the auxiliary connecting shaft passes through the shaft hole and cooperates with the ratchet connecting hole reserved on the first clamping arm 1 to realize the connection between the ratchet and the first clamping arm 1.

[0037] The structure of the second clamping arm 2 is basically the same as that of the first clamping arm 1, including an integral second hand-held part 22, a second clamping part 23, and a connecting part 24 located between the second hand-held part 22 and the second clamping part 23.

[0038] Similarly, the second hand-held part 22 and the second clamping part 23 are arranged in parallel directions, and the connecting part 24 is arranged at an angle relative to the second hand-held part 22 and the second clamping part 23.

[0039] The outer working surface of the second hand-held part 22 is also provided with a protective layer to prevent slippage during use. A second clamping head 231 is provided at the working end of the second clamping part 23. The connecting part 24 is provided with a through groove, and a second rotating shaft connecting hole 241 is provided on the groove wall. The first clamping arm 1 passes through the through groove and is mounted on the second clamping arm 2 to form a cross structure. At this time, from the inside to the outside, the connecting hole 411 provided on the double ears of the ratchet mounting seat 41, the first rotating shaft connecting hole 111 on the first clamping arm 1 and the second rotating shaft connecting hole 241 achieve coaxiality. The rotating shaft 3 passes through all the above holes at the same time, so that the first clamping arm 1, the second clamping arm 2 and the ratchet assembly 4 form an assembly relationship.

[0040] The mating mounting part 21 for installing the meshing linkage component 5 is located in the groove with open ends formed on the inner working surface of the second hand-held part 22.

[0041] The meshing linkage assembly 5 includes a linkage block 51, a ratchet block 52, and a linkage handle 53. The linkage block 51 is set between the ratchet block 52 and the linkage handle 53, which not only makes it easier to release after being subjected to force, but also ensures stability under repeated use.

[0042] The linkage block 51 is provided with a first connecting part 511, a second connecting part 512 and a third limiting part 513.

[0043] The linkage handle 53 includes a mating end 531, a working end 532, and a connecting position 533. A pin 7 is inserted into the connecting position 533. The two working ends of the pin 7 are engaged with the connecting shaft holes 221 opened on the groove wall of the second hand-held part 22 to achieve a rotatable connection between the linkage handle 53 and the second hand-held part 22. The mating end 531 of the linkage handle 53 is inserted into the second connecting part 512 of the linkage block 51 to enable the linkage block 51 to engage and move together. The working end 532 of the linkage handle 53 extends away from the ratchet block 52 and maintains a space for movement between the linkage handle 53 and the bottom of the groove. Of course, a pressing part is provided on the working surface of the working end 532 of the linkage handle 53 facing away from the second hand-held part 22 for convenient pressing operation.

[0044] The ratchet block 52 is connected to the first connecting part 511 by a shaft pin 54, and the ratchet 521 on the ratchet block 52 is engaged with the tooth surface of the arc-shaped rack 42 in the working state.

[0045] The extended end 61 of the elastic element 6 extends toward the linkage block 51 and is limited by the third limiting part 513. Of course, the fixed end of the elastic element 6 passes through the rotating shaft 3 and is located between the two ears of the ratchet mounting seat 41. Of course, if the ratchet mounting seat 41 is not selected, the fixed end of the elastic element 6 passes through the rotating shaft 3 and is located between the two symmetrical first rotating shaft connecting holes 111. In this solution, the elastic element is a torsion spring.

[0046] The principle of the above structure is as follows: By repeatedly applying gripping force to the first hand-held part 12 and the second hand-held part 22 of the first clamping arm 1 and the second clamping arm 2, the first clamping head 131 and the second clamping head 231 approach and clamp the object during the meshing process of the ratchet 521 and the arc-shaped rack 42. The ratchet 521 and the arc-shaped rack 42 can always maintain the clamping state and will not fail when the gripping force disappears. At this time, the elastic element 6 provides a tactile force.

[0047] At the same time, when it is necessary to release the object, press the pressing part of the working end 532 of the linkage handle 53. Under the action of the linkage block 51, the ratchet 521 of the ratchet block 52 is disengaged from the tooth surface of the arc-shaped rack 42, so that the elastic element 6 assists the first clamping head 131 and the second clamping head 231 to quickly separate under its own elastic force, and completes the release of the clamped item.

[0048] By placing the ratchet assembly and the engagement linkage assembly in the reserved mounting part and the mating mounting part respectively, the ratchet clamp head can rotate 360 ​​degrees, adapting to operation in narrow spaces and expanding the applicability of the ratchet clamp. At the same time, compared with the central setting in the existing design, this structure is more flexible in use and avoids the force application angle deviation problem of the traditional intermediate shaft design. Overall, by hiding the ratchet assembly and the engagement linkage assembly in the space of the clamp arm, the ratchet clamp has better integrity and has good market prospects.

[0049] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A ratchet clamp, comprising a first clamping arm (1) and a second clamping arm (2), wherein the first clamping arm (1) and the second clamping arm (2) are connected by a pivot (3) and are rotatable about the pivot (3), characterized in that, A ratchet assembly (4) is provided in the reserved mounting part (11) of the first clamping arm (1), and a meshing linkage assembly (5) is provided in the mating mounting part (21) of the second clamping arm (2). An elastic element (6) is connected to both the meshing linkage assembly (5) and the ratchet assembly (4). When the first clamping arm (1) and the second clamping arm (2) rotate around the rotating shaft (3), the meshing linkage assembly (5) and the ratchet assembly (4) cooperate to achieve the clamping and release of the ratchet clamp.

2. The ratchet clamp according to claim 1, characterized in that, The first clamping arm (1) includes a first hand-held part (12), a first clamping part (13), and a reserved mounting part (11) located between the first hand-held part (12) and the first clamping part (13). A mounting groove is provided at the reserved mounting part (11), and a first rotating shaft connecting hole (111) is provided on the groove wall.

3. The ratchet clamp according to claim 2, characterized in that, The ratchet assembly (4) includes a ratchet mounting seat (41) disposed in the mounting groove. An arc-shaped rack (42) is disposed in the ratchet mounting seat (41), and the tooth surface of the arc-shaped rack (42) is kept facing the second clamping arm (2). A connecting hole (411) is disposed on the ratchet mounting seat (41), and is coaxial with the first rotating shaft connecting hole (111) disposed on the reserved mounting part (11).

4. The ratchet clamp according to claim 2, characterized in that, The ratchet assembly (4) includes a ratchet disposed in the mounting groove, and an arc-shaped rack (42) is disposed on the working surface of the ratchet, and the tooth surface of the arc-shaped rack (42) is kept facing the second clamping arm (2).

5. The ratchet clamp according to claim 3, characterized in that, The second clamping arm (2) includes a second hand-held part (22), a second clamping part (23), and a connecting part (24) located between the second hand-held part (22) and the second clamping part (23). The connecting part (24) has a through groove through which the first clamping arm (1) can pass. A second rotating shaft connecting hole (241) is provided on the groove wall of the through groove. The mating mounting part (21) is located in a groove with open ends formed on the inner working surface of the second hand-held part (22).

6. The ratchet clamp according to claim 5, characterized in that, A connecting shaft hole (221) is provided on the groove wall.

7. The ratchet clamp according to claim 6, characterized in that, The meshing linkage assembly (5) includes a linkage block (51), which is provided with a first connecting part (511) for connecting the ratchet block (52), a second connecting part (512) that cooperates with the linkage handle (53), and a third limiting part (513) that cooperates with the elastic element.

8. The ratchet clamp according to claim 7, characterized in that, The linkage handle (53) and the second hand-held part (22) are rotatably connected by a pin (7). The mating end (531) of the linkage handle (53) is inserted into the second connecting part (512) of the linkage block (51) so that the linkage block (51) is engaged and linked. The working end (532) of the linkage handle (53) extends away from the ratchet block (52) and maintains a space for movement between the linkage handle (53) and the bottom of the groove.

9. The ratchet clamp according to claim 7, characterized in that, The ratchet block (52) is connected to the first connecting part (511) by a shaft pin (54), and the ratchet (521) on the ratchet block (52) is engaged with the tooth surface of the arc-shaped rack (42) in the working state.

10. The ratchet clamp according to claim 7, characterized in that, The mounting end of the elastic element (6) is sleeved on the rotating shaft (3), and the extension end (61) of the elastic element (6) extends toward the linkage block (51) and is limited by the third limiting part (513).

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