A quick clamp

Abstract

The application relates to a quick clamp which comprises a movable clamp, a fixed clamp and a guide rod, the movable clamp is detachably connected with the guide rod, a shell is arranged on the fixed clamp, a pressing mechanism and a releasing mechanism are arranged in the shell, the guide rod passes through the pressing mechanism and the releasing mechanism, a movable handle and a fixed handle are arranged below the fixed clamp, a step piece and a releasing piece are respectively arranged on the movable handle and the fixed handle, a chuck is arranged on the side, where the movable clamp and the fixed clamp are close to each other, overload limiting blocks are arranged on the movable clamp and the fixed clamp, and the end portions of the overload limiting blocks are flush with the end portions of the chucks. Through cooperation of the pressing mechanism, the releasing mechanism, the step piece and the releasing piece, quick clamping and releasing operations are realized while the clamping force is increased, the chucks on the movable clamp and the fixed clamp cooperate with the overload limiting blocks, stable clamping can be ensured, and damage of overloading clamping to clamped articles can be effectively avoided.

Description

Technical Field

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

[0002] Woodworking clamps are indispensable tools in woodworking, mainly used for fixing, clamping, or supporting workpieces. The F-type quick-release woodworking clamp is widely used due to its simple structure and easy operation. The F-type quick-release clamp mainly consists of a fixed clamp, a sliding clamp, a guide rod, a locking / releasing mechanism including a drive handle, a locking handle, and a stepping plate. It achieves rapid movement and clamping of the clamp through leverage and friction.

[0003] Existing woodworking clamps are used by pressing a drive handle, which moves a drive plate. A guide rod is fixed by a stepping plate, and continuous pressing of the drive handle moves the guide rod to achieve a clamping effect. For example, Chinese Patent Publication No. CN105215875A, published on January 6, 2016, discloses a clamp including a movable clamp, a fixed clamp, and a rod. The rod passes through the movable clamp and the fixed clamp. The clamp also includes a stepping mechanism and a locking / releasing mechanism. The stepping mechanism consists of a first handle, a second handle, a drive plate, and a first elastic component. The first handle is pivotally mounted on the fixed clamp via a pivot located on the first handle and is paired with the second handle. The drive plate is mounted on the rod and contacts a contact portion located on the first handle. The first elastic component is configured to provide a preload force to the drive plate, ensuring that the drive plate and the contact portion remain in contact. The pivot and contact portion are located on the upper side of the rod; this elevated pivot position facilitates the generation of a larger clamping force. The fixture also features a free stroke adjustment mechanism, which can adjust the free stroke of the first handle to reduce the requirements for the punching accuracy of the drive piece, thereby saving manufacturing time and reducing costs while generating better clamping force.

[0004] In the above-mentioned method, by setting the pivot point of the first handle and setting the drive plate on the first handle, the contact part between the drive plate and the rod is set on the upper side of the rod, thereby extending the operating lever arm and increasing the clamping force. However, the increase in clamping force can also lead to easy overload. This application does not consider the overload limit protection structure, which can easily cause certain damage to the surface of the clamped product during the clamping process. Therefore, it is necessary to design a quick clamp with good clamping effect and overload protection. Utility Model Content

[0005] This application provides a quick clamp with good clamping effect and overload protection.

[0006] The quick clamp provided in this application adopts the following technical solution:

[0007] A quick clamp includes a movable clamp, a fixed clamp, and a guide rod. The movable clamp is detachably connected to the guide rod. The fixed clamp is provided with a housing, and a clamping mechanism and a release mechanism are provided inside the housing. The guide rod passes through the clamping mechanism and the release mechanism. A movable handle and a fixed handle are provided below the fixed clamp. A stepping plate and a release plate are respectively provided on the movable handle and the fixed handle. The stepping plate is rotatably connected to the housing, and the upper part of the stepping plate can connect with the clamping mechanism. The release plate connects with the release mechanism. A chuck is provided on the side of the movable clamp and the fixed clamp that are close to each other. An overload limit block is provided on both the movable clamp and the fixed clamp, and the end of the overload limit block is flush with the end of the chuck.

[0008] Preferably, the movable clamp includes a first connecting part that can be sleeved on the guide rod, a first clamping part is obliquely provided on the first connecting part, the end of the first clamping part is provided with the clamp head, and the end of the first connecting part near the fixed clamp is provided with the overload limiting block.

[0009] Preferably, the first connecting part is provided with a quick-lock buckle, and both ends of the guide rod are provided with mounting holes corresponding to the quick-lock buckle.

[0010] Preferably, the fixing clamp includes a second connecting part and a second clamping part inclinedly disposed on the second connecting part. The second clamping part and the first clamping part are inclined in directions close to each other. The clamping part is provided with the chuck. The overload limiting block is provided on the second connecting part near the first connecting part. The housing is provided on the second clamping part.

[0011] Preferably, the clamping mechanism includes a clamping plate and a clamping spring. The clamping plate is a perforated plate obliquely sleeved on the guide rod. The two ends of the clamping spring are respectively connected to the clamping plate and the housing. The upper end of the stepping piece is rotatably connected to the housing. A clamping post is provided on the upper part of the stepping piece. The clamping post is located above the guide rod and its side is connected to the clamping plate. The lower part of the stepping piece is connected to the inner side of the movable handle.

[0012] Preferably, the clamping column is located above the inclined side of the clamping plate, and the clamping column is movably connected to the stepping plate.

[0013] Preferably, the housing is provided with sealing plates on both sides, the stepping plate is two pieces and the two stepping plates are provided on both sides of the housing, the stepping plates are located between the housing and the pressing plate, and the pressing column is connected between the two stepping plates respectively.

[0014] Preferably, the release mechanism includes a locking plate and a locking spring. The locking plate consists of multiple pieces, which are obliquely sleeved on the guide rod. The two ends of the locking spring abut against the housing and the locking plate, respectively. The lower ends of all or part of the locking plates extend out of the housing, and the extended parts are connected to fasteners to form the release plate. The release plate is located inside the fixed handle and close to the movable handle.

[0015] Preferably, the housing has arc-shaped portions on both sides corresponding to the locking plate and is connected to the locking plate through the arc-shaped portions.

[0016] Preferably, the housing is provided with a positioning part corresponding to the compression spring and the locking spring.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. This application, through the detachable connection between the movable clamp and the guide rod, combined with the cooperation of the clamping mechanism, the release mechanism, the stepping plate, and the release plate, increases the clamping force while realizing rapid clamping and release operations, thus improving ease of use; the clamps on the movable clamp and the fixed clamp, in conjunction with the overload limit block, can ensure stable clamping and effectively avoid damage to the clamped items caused by overload clamping, thereby enhancing clamping reliability and safety of use.

[0019] 2. The guide rod is fitted onto the first connecting part and cooperates with the inclined first clamping part and the end chuck. At the same time, an inclined second clamping part is set on the second connecting part, so that the clamping cooperation between the movable clamp and the fixed clamp is more precise and stable. The first connecting part is provided with a quick lock buckle that corresponds to the mounting holes at both ends of the guide rod, which not only realizes the reliable fixation of the movable clamp on the guide rod, but also makes it easy to adjust the position of the movable clamp according to the needs, adapting to both clamping and spreading working scenarios. By setting an overload limit block on the side of the chuck corresponding to the position of the chuck, the position of the chuck is limited, avoiding damage to the clamped items due to overload of the chuck, resulting in good performance.

[0020] 3. By setting a stepping plate inside the housing and setting a clamping post on the stepping plate, the clamping post drives the clamping plate to move, which in turn drives the guide rod to move under the action of friction. Combined with the locking mechanism, the guide rod is locked, realizing the stepping of the guide rod and ensuring the clamping effect. At the same time, since the clamping post is located above the guide rod, it can extend the lever arm and increase the clamping force compared with conventional gold patch plates. The lower end of the stepping plate is connected to the movable handle, which increases the strength of the movable handle and prevents the movable handle from breaking.

[0021] 4. By extending all or part of the locking plate of the locking mechanism out of the housing to form a release plate, the strength of the release plate can be improved, ensuring stable release. Attached Figure Description

[0022] Figure 1 This is a perspective view of the quick clamp in a preferred embodiment of this application.

[0023] Figure 2 This is a perspective view of the quick clamp in a preferred embodiment of this application.

[0024] Figure 3 This is a side view of the movable clip in a preferred embodiment of this application.

[0025] Figure 4 This is a perspective view of the movable clip in a preferred embodiment of this application.

[0026] Figure 5 This is a side view of the fixing clip in a preferred embodiment of this application.

[0027] Figure 6 This is a perspective view of the fixing clip in a preferred embodiment of this application.

[0028] Figure 7 This is a side view of the fixing clip without the housing in a preferred embodiment of this application.

[0029] Figure 8 This is a perspective view of the fixing clip after the housing is removed in a preferred embodiment of this application.

[0030] Figure 9 This is a perspective view of the preferred embodiment of this application after the housing of the fixing clip has been removed.

[0031] Figure 10 This is a perspective view of the stepper sheet in a preferred embodiment of this application.

[0032] Figure 11 This is a perspective view of the release sheet in a preferred embodiment of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Movable clamp; 101. First connecting part; 102. First clamping part; 103. Quick lock; 2. Fixed clamp; 201. Second connecting part; 202. Second clamping part; 203. Housing; 3. Guide rod; 301. Mounting hole; 4. Pressing mechanism; 401. Pressing plate; 402. Pressing spring; 5. Release mechanism; 501. Locking plate; 502. Locking spring; 6. Movable handle; 7. Fixed handle; 8. Stepping plate; 801. Pressing column; 9. Release plate; 10. Clamp; 11. Overload limit block. Detailed Implementation

[0034] The present application will be further described in detail below with reference to the accompanying drawings.

[0035] This application discloses a quick clamp.

[0036] Reference Figures 1 to 11A quick clamp includes a movable clamp 1, a fixed clamp 2, and a guide rod 3. The movable clamp 1 and the guide rod 3 are detachably connected. A clamp head 10 is provided on the side of the movable clamp 1 and the fixed clamp 2 that are close to each other. Both the movable clamp 1 and the fixed clamp 2 are provided with overload limiting blocks 11, and the end of the overload limiting block 11 is flush with the end of the clamp head 10. Specifically, in this embodiment, the movable clamp 1 includes a first connecting part 101, which can be sleeved on the guide rod 3. A quick-lock buckle 103 is provided on the first connecting part 101 and is connected to the guide rod 3 through the quick-lock buckle 103. Both ends of the guide rod 3 are provided with mounting holes 301 corresponding to the quick-lock buckle 103, allowing the movable clamp 1 to be installed at both ends of the guide rod 3, achieving two different working states: clamping and opening. A first clamp is inclinedly provided on the first connecting part 101. The clamping part 102 has a chuck 10 at its end and an overload limiting block 11 at the end of the first connecting part 101 near the fixed clamp 2. The fixed clamp 2 includes a second connecting part 201 and a second clamping part 202 inclined on the second connecting part 201. A housing 203 is provided on the second clamping part 202. The second clamping part 202 and the first clamping part 102 are inclined towards each other. The chuck 10 is provided on the second clamping part 202. An overload limiting block 11 is provided at the position of the second connecting part 201 near the first connecting part 101. When the chucks 10 of the movable clamp 1 and the fixed clamp 2 are clamped, the overload limiting blocks 11 provided on each of them abut against each other, which can prevent damage to the surface of the clamped item after the chuck is overloaded, and protect the item while ensuring the clamping effect. The effect is good.

[0037] Reference Figures 5 to 11 The fixed clamp 2 is provided with a housing 203, and a pressing mechanism 4 and a releasing mechanism 5 are provided inside the housing 203. The guide rod 3 passes through the pressing mechanism 4 and the releasing mechanism 5. The fixed clamp 2 is provided with a movable handle 6 and a fixed handle 7 below it. The movable handle 6 and the fixed handle 7 are respectively provided with a stepping piece 8 and a releasing piece 9. The stepping piece 8 is rotatably connected inside the housing 203, and the upper part of the stepping piece 8 can be connected to the pressing mechanism 4. The releasing piece 9 is connected to the releasing mechanism 5.

[0038] Reference Figures 7 to 10The clamping mechanism 4 includes a clamping plate 401 and a clamping spring 402. The clamping plate 401 is a perforated plate obliquely sleeved on the guide rod 3. The two ends of the clamping spring 402 are respectively connected to the clamping plate 401 and the housing 203. The upper end of the stepping piece 8 is rotatably connected to the housing 203. A clamping post 801 is provided on the upper part of the stepping piece 8. The clamping post 801 is located above the guide rod 3 and its side is connected to the clamping plate 401. The lower part of the stepping piece 8 is connected to the inner side of the movable handle 6. The clamping post 801 is located above the oblique side of the clamping plate 401. The clamping post 801 and the stepping piece 802 are connected to each other. Specifically, the housing 203 has sealing plates on both sides, and two stepping plates 8 are arranged on both sides of the housing 203. The two stepping plates 8 are fixed to the inside of the movable handle 6 by bolts and screws. The stepping plates 8 are located between the housing 203 and the clamping plate 401. The clamping columns 801 are connected between the two stepping plates 8 respectively. The movable handle 6 can drive the stepping plates 8 to rotate, thereby driving the clamping columns 801 to move, and finally driving the clamping plate 401 to move. The friction between the clamping plate 401 and the guide rod 3 drives the guide rod 3 to move, thus achieving the clamping effect.

[0039] Reference Figures 7 to 11 The release mechanism 5 includes a locking plate 501 and a locking spring 502. The locking plate 501 consists of multiple pieces, which are obliquely sleeved on the guide rod 3. The two ends of the locking spring 502 abut against the housing 203 and the locking plate 501, respectively. The lower ends of all or part of the locking plates 501 extend out of the housing 203 and are connected to fasteners to form a release piece 9. The release piece 9 is located inside the fixed handle 7 and close to the movable handle 6. Specifically, in this embodiment, arc-shaped parts are provided on both sides of the housing 203 corresponding to the locking plate 501 and are connected to the locking plate 501 through the arc-shaped parts to ensure that the locking plate 501 can rotate and to ensure the release effect. The housing 203 is provided with positioning parts corresponding to the compression spring 402 and the locking spring 502 to facilitate the installation and fixing of the compression spring 402 and the locking spring 502.

[0040] The implementation principle is as follows: This application uses the detachable connection between the movable clamp 1 and the guide rod 3, combined with the cooperation of the clamping mechanism 4, the release mechanism 5, the stepping plate 8, and the release plate 9, to increase the clamping force while realizing rapid clamping and release operations, thus improving ease of use; the clamps 10 on the movable clamp 1 and the fixed clamp 2, in conjunction with the overload limit block 11, can ensure stable clamping and effectively avoid damage to the clamped items caused by overload clamping, thereby enhancing clamping reliability and safety, and making it convenient to use.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick clamp, characterized in that: The device includes a movable clamp (1), a fixed clamp (2), and a guide rod (3). The movable clamp (1) and the guide rod (3) are detachably connected. The fixed clamp (2) is provided with a housing (203), and a pressing mechanism (4) and a releasing mechanism (5) are provided inside the housing (203). The guide rod (3) passes through the pressing mechanism (4) and the releasing mechanism (5). A movable handle (6) and a fixed handle (7) are provided below the fixed clamp (2). The movable handle (6) and the fixed handle (7) are respectively provided with... A stepping plate (8) and a release plate (9) are provided. The stepping plate (8) is rotatably connected inside the housing (203) and the upper part of the stepping plate (8) can be connected to the clamping mechanism (4). The release plate (9) is connected to the release mechanism (5). A clamp (10) is provided on the side of the movable clamp (1) and the fixed clamp (2) that are close to each other. An overload limit block (11) is provided on both the movable clamp (1) and the fixed clamp (2), and the end of the overload limit block (11) is flush with the end of the clamp (10).

2. The quick clamp according to claim 1, characterized in that: The movable clamp (1) includes a first connecting part (101) and the first connecting part (101) can be sleeved on the guide rod (3). A first clamping part (102) is inclinedly arranged on the first connecting part (101). The clamp (10) is provided at the end of the first clamping part (102). The overload limiting block (11) is provided at the end of the first connecting part (101) near the fixed clamp (2).

3. A quick clamp according to claim 2, characterized in that: The first connecting part (101) is provided with a quick lock buckle (103), and both ends of the guide rod (3) are provided with mounting holes (301) corresponding to the quick lock buckle (103).

4. A quick clamp according to claim 2, characterized in that: The fixing clamp (2) includes a second connecting part (201) and a second clamping part (202) inclinedly disposed on the second connecting part (201). The second clamping part (202) and the first clamping part (102) are inclined towards each other. The clamp (10) is disposed on the second clamping part (202). The overload limiting block (11) is disposed on the second connecting part (201) near the first connecting part (101). The housing (203) is disposed on the second clamping part (202).

5. A quick clamp according to claim 1, characterized in that: The clamping mechanism (4) includes a clamping plate (401) and a clamping spring (402). The clamping plate (401) is a perforated plate that is inclinedly sleeved on the guide rod (3). The two ends of the clamping spring (402) are respectively connected to the clamping plate (401) and the housing (203). The upper end of the stepping piece (8) is rotatably connected to the housing (203). A clamping column (801) is provided on the upper part of the stepping piece (8). The clamping column (801) is located above the guide rod (3) and the side of the clamping column (801) is connected to the clamping plate (401). The lower part of the stepping piece (8) is connected to the inner side of the movable handle (6).

6. A quick clamp according to claim 5, characterized in that: The clamping column (801) is located above the inclined side of the clamping plate (401), and the clamping column (801) is movably connected to the stepping piece (8).

7. A quick clamp according to claim 5, characterized in that: The housing (203) is provided with sealing plates on both sides. There are two stepping plates (8) and the two stepping plates (8) are provided on both sides of the housing (203). The stepping plates (8) are located between the housing (203) and the clamping plate (401). The clamping column (801) is connected between the two stepping plates (8).

8. A quick clamp according to claim 5, characterized in that: The release mechanism (5) includes a locking plate (501) and a locking spring (502). The locking plate (501) consists of multiple pieces, and the multiple locking plates (501) are obliquely sleeved on the guide rod (3). The two ends of the locking spring (502) abut against the housing (203) and the locking plate (501) respectively. The lower ends of all or part of the locking plates (501) extend out of the housing (203) and the extended part is connected to a fastener to form the release piece (9). The release piece (9) is located inside the fixed handle (7) and close to the movable handle (6).

9. A quick clamp according to claim 8, characterized in that: The housing (203) has arc-shaped portions on both sides corresponding to the locking plate (501) and the arc-shaped portions are connected to the locking plate (501).

10. A quick clamp according to claim 8, characterized in that: The housing (203) is provided with a positioning part corresponding to the compression spring (402) and the locking spring (502).

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