A manual clamp

Abstract

The utility model relates to jig frock technical field, especially hand-operated clamping device, including left and right interval setting's left reinforcing positioning board and right reinforcing positioning board and left reinforcing positioning board and right reinforcing positioning board between setting have clamping arm, drive arm and auxiliary arm, be equipped with first positioning shaft between left reinforcing positioning board and right reinforcing positioning board for clamping arm rotation, still be equipped with second positioning shaft between left reinforcing positioning board and right reinforcing positioning board for auxiliary arm rotation, drive arm forms a segment that can drive clamping arm and auxiliary arm clockwise rotation or counterclockwise rotation together, one end of drive segment is rotatably connected with clamping arm through first linkage shaft, the other end of drive segment is rotatably connected with auxiliary arm through second linkage shaft, under initial state, first linkage shaft and second positioning shaft are respectively in the upper front and lower front of second linkage shaft, first linkage shaft is in the lower rear of first positioning shaft, and the wrapping is better.

Description

Technical Field

[0001] This utility model relates to the field of fixture and tooling technology, and in particular to a manual clamping device. Background Technology

[0002] Many existing product component processing production lines use tooling fixtures for installation and positioning, especially in the production of automobiles, which have a large number of parts. There are many manual and automatic positioning devices that require workpieces to be clamped and positioned before any operations can be performed. Some of these require manual operation for production needs. Numerous existing designs exist, and many are patented technologies.

[0003] For example, Chinese Patent Application No. 202021582845.3 discloses a manual clamping device, including a base, a handle, a chuck, and a pressure head. The handle and the chuck are respectively hinged to the base and can rotate around the base. The front end of the handle is hinged to the rear end of the chuck, and the pressure head is fixed to the front end of the chuck for clamping the workpiece. The chuck is raised or lowered by manually lifting or pressing the handle, thereby releasing or clamping the workpiece.

[0004] The existing structures have poor containment, and their strength and stability still need to be improved. They are prone to deformation or insufficient precision. Utility Model Content

[0005] The purpose of this invention is to provide a manual clamp with better wrapping properties.

[0006] The above-mentioned objective of this utility model is achieved through the following technical solution: a manual clamping device, comprising a left reinforcing positioning plate and a right reinforcing positioning plate spaced apart, a clamping arm capable of rotating up and down between the left and right reinforcing positioning plates, a driving arm for driving the clamping arm to rotate, and an auxiliary arm for cooperating with the driving arm to complete locking and unlocking actions. A first positioning shaft for the clamping arm to rotate is provided between the left and right reinforcing positioning plates, and a second positioning shaft for the auxiliary arm to rotate is also provided between the left and right reinforcing positioning plates. The second positioning shaft is located below and behind the first positioning shaft. The driving arm forms a driving section that can drive the clamping arm and the auxiliary arm to rotate clockwise or counterclockwise together. One end of the driving section is rotatably connected to the clamping arm through a first linkage shaft, and the other end of the driving section is rotatably connected to the auxiliary arm through a second linkage shaft. In the initial state, the first linkage shaft and the second positioning shaft are respectively located above and below the second linkage shaft, and the first linkage shaft is located below and behind the first positioning shaft.

[0007] As a preferred embodiment of the present invention, a drive front lever forming part that initially protrudes forward from the clamping arm is integrally connected between the two ends of the clamping arm. The first positioning shaft passes through the front lever forming part. In the initial state, the clamping arm extends from bottom to top and the first linkage shaft passes through the lower end of the clamping arm. A clamping head is integrally connected to the upper end of the clamping arm.

[0008] As a preferred embodiment of this utility model, the clamping head is provided with a plurality of clamping assembly holes.

[0009] As a preferred embodiment of this invention, in the locked state, the angle between the drive section and the auxiliary arm is 175-180 degrees.

[0010] As a preferred embodiment of the present invention, in the initial state, the drive segment extends obliquely upward from back to front, and the drive arm also includes a handheld operating segment extending backward integrally connected to the rear end of the drive segment.

[0011] As a preferred embodiment of this utility model, a locking limiting block is sandwiched between the left reinforcing positioning plate and the right reinforcing positioning plate, which is used to drive the front lever forming part to abut downward in the locked state. The locking limiting block is located in front of and below the first positioning shaft.

[0012] As a preferred embodiment of this utility model, an initial limiting post is provided between the left reinforcing positioning plate and the right reinforcing positioning plate for the clamping arm to abut forward in the initial state.

[0013] As a preferred embodiment of this utility model, the auxiliary arm includes a left auxiliary plate and a right auxiliary plate symmetrically arranged at intervals, and a connecting sleeve integrally connected between the left and right auxiliary plates and sleeved on the second positioning shaft. The driving section is abutted and clamped between the left and right auxiliary plates. The left side of the left auxiliary plate abuts against the right side of the left reinforcing positioning plate, and the right side of the right auxiliary plate abuts against the left side of the right reinforcing positioning plate. A left gasket sleeved on the first positioning shaft is spaced apart and clamped between the left side of the driving front lever forming part and the right side of the left reinforcing positioning plate. A right gasket sleeved on the first positioning shaft is spaced apart and clamped between the right side of the driving front lever forming part and the left side of the right reinforcing positioning plate.

[0014] As a preferred embodiment of this utility model, a first bushing is embedded in both the left reinforcing positioning plate and the right reinforcing positioning plate, and is respectively fitted into the left and right ends of the first positioning shaft. A second bushing is embedded in both the left and right reinforcing positioning plates, and is respectively fitted into the left and right ends of the second positioning shaft.

[0015] As a preferred embodiment of this utility model, a locking bolt extending in the left and right directions is fixed between the left reinforcing positioning plate and the right reinforcing positioning plate. A reinforcing fixing sleeve for the screw of the locking bolt to pass through is also sandwiched between the left reinforcing positioning plate and the right reinforcing positioning plate. The locking limiting block is rectangular and abuts against the left reinforcing positioning plate and the right reinforcing positioning plate, and a locking bolt is also inserted on the locking limiting block.

[0016] The beneficial effects of this utility model are: the overall structure has better containment and is more compact, the structure has better stability and strength, and the stability of clamping and positioning is also greatly improved. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the clamp in the embodiment from the right-side view in its initial state;

[0018] Figure 2 yes Figure 1 A three-dimensional structural diagram after the right reinforcing positioning plate is removed from the structure;

[0019] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure from the left-hand perspective;

[0020] Figure 4 yes Figure 1 A three-dimensional structural diagram from the left side after the left reinforcing positioning plate in the structure is removed;

[0021] Figure 5 yes Figure 1 A three-dimensional structural diagram of the clamping device in the locked state from the right-side view.

[0022] Figure 6 yes Figure 5 A three-dimensional structural diagram after the right reinforcing positioning plate is removed from the structure;

[0023] Figure 7 yes Figure 6 A three-dimensional structural diagram of the auxiliary arm in the diagram. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

[0026] Examples, such as Figure 1-7As shown, a manual clamp includes a left reinforcing positioning plate 1 and a right reinforcing positioning plate 2 spaced apart, a clamping arm 3 rotatable between the left and right reinforcing positioning plates 1 and 2, a drive arm 4 for driving the clamping arm 3 to rotate, and an auxiliary arm 5 for cooperating with the drive arm 4 to complete locking and unlocking actions. The left and right reinforcing positioning plates 1 and 2 can be made of rectangular or approximately rectangular steel plates, while the clamping arm 3 and auxiliary arm 5 can be made of straight steel plates. The drive arm 4 needs to be curved, as will be explained later, because it needs to be linked with the auxiliary arm 5 but avoids the auxiliary arm 5. A portion of these three arms is always enclosed within the space between the left and right reinforcing positioning plates 1 and 2, reducing the exposed portion, improving the enclosedness and force support and balance between the left and right sides, and making the stability more reliable. The initial state is defined as the relaxed state, while the working state is the locked state. In the initial state, the locking state is preferred. Ideally, at least part of the clamping arm 3, the drive arm 4, and the auxiliary arm 5 should be located in the interval area between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. This provides better containment and better structural stability.

[0027] Furthermore, a first positioning shaft 61 for rotating the clamping arm 3 is provided between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2, and a second positioning shaft 62 for rotating the auxiliary arm 5 is also provided between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. The second positioning shaft 62 is located below and behind the first positioning shaft 61. The driving arm 4 forms a driving section 41 that can drive the clamping arm 3 and the auxiliary arm 5 to rotate clockwise or counterclockwise together. This is from the perspective of viewing from the right side. For example, if the clamping arm 3 swings upwards from back to front, it is clockwise; if it swings upwards from front to back, it is counterclockwise. The driving section 41 is preferably linear.

[0028] One end of the drive section 41 is rotatably connected to the clamping arm 3 via the first linkage shaft 411, and the other end of the drive section 41 is rotatably connected to the auxiliary arm 5 via the second linkage shaft 412. In the initial state, the first linkage shaft 411 and the second positioning shaft 62 are respectively located above and below the second linkage shaft 412, and the first linkage shaft 411 is located below and behind the first positioning shaft 61. It is feasible to keep the first linkage shaft 411 directly above the second positioning shaft 62, or slightly forward or backward above the second positioning shaft 62, but the forward or backward deviation should not exceed 2 cm. The first positioning shaft 61 and the second positioning shaft 62 are to be installed and positioned between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. That is, the positions of the first positioning shaft 61 and the second positioning shaft 62 in three-dimensional space are fixed. However, the spatial positions of the first linkage shaft 411 and the second linkage shaft 412 will change because a linkage effect is required. Therefore, the first linkage shaft 411 and the second linkage shaft 412 are simply inserted through the drive section 41 and the auxiliary arm 5. The two ends of the first linkage shaft 411 and the second linkage shaft 412 are separated from the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. Thus, their spatial positions within the interval area between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2 are variable. Driven by the drive section 41, in the locked state, the axis connecting the first linkage shaft 411, the second linkage shaft 412, and the second positioning shaft 62 should be kept on the same straight line or as straight as possible. In this way, the locking effect of the clamping arm 3 will be very stable. Because the lever force formed above acts on the branch line of the first linkage shaft 411, the second linkage shaft 412, and the second positioning shaft 62, and since the position of the second positioning shaft 62 is fixed, the force that wants to make the clamping arm 3 rotate is absorbed by this stable branch line, thereby ensuring that the locking state of the clamping arm 3 is stable.

[0029] Specifically, a drive front lever forming part 31, which initially protrudes forward from the clamping arm 3, is integrally connected between the two ends of the clamping arm 3. The first positioning shaft 61 passes through the front lever forming part 31, and of course, the left and right ends of the first positioning shaft 61 are inserted into the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2, respectively, so that the spatial position of the first positioning shaft 61 will not change. In the initial state, the clamping arm 3 extends from bottom to top, and the first linkage shaft 411 passes through the lower end of the clamping arm 3. Of course, the first linkage shaft 411 passes through the drive section 41, and in the initial state, the front end of the drive section 41 extends from back to front and upward, while the auxiliary arm 5 extends obliquely from back to front and downward. At this time, a clamping head 30 is integrally connected to the upper end of the clamping arm 3, and the clamping head 30 is preferably rectangular. Furthermore, the clamping head 30 is provided with a plurality of clamping assembly holes 300. The clamping assembly holes 300 can be round holes or square holes, or even threaded holes. They are mainly used to position different workpieces and to process the workpieces in the clamping state.

[0030] Furthermore, in the locked state, the angle between the drive section 41 and the auxiliary arm 5 is 175-180 degrees, as mentioned above. This ensures that the axis connecting the first linkage shaft 411, the second linkage shaft 412, and the second positioning shaft 62 is kept on the same straight line or as straight as possible. In the locked state, the clamping arm 3 extends forward and is in a horizontal or as horizontal as possible position.

[0031] Preferably, in the initial state, the drive section 41 extends obliquely from back to front and upward. The drive arm 4 also includes a handheld operating section 42 that extends backward and is integrally connected to the rear end of the drive section 41. The handheld operating section 42 is used for manual operation to apply force and drive the drive arm 4. The length of the handheld operating section 42 extends and forms a crank structure, which also provides structural avoidance. In the initial state, the handheld operating section 42 can be horizontal or slightly horizontal. By driving forward and downward, it drives the auxiliary arm 5 and the clamping arm 3 to rotate clockwise in a linked manner. This ensures that the axis connecting the first linkage shaft 411, the second linkage shaft 412, and the second positioning shaft 62 are kept on the same straight line or as close to the same straight line as possible to reach a stable state. At this time, only the return operation force of the drive section 41 can break the locking state. The workpiece positioning and processing on the front clamping arm 3 side will not affect this locking state.

[0032] Preferably, a locking limit block 71 is sandwiched between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2, which allows the front lever forming part 31 to abut downwards in the locked state. The locking limit block 71 is located below the front of the first positioning shaft 61, which effectively prevents over-driving and failure to be in the best locking state. This ensures that when the current lever forming part 31 rotates clockwise and touches the locking limit block 71, it is in the best locking state.

[0033] Preferably, an initial limiting post 72 is sandwiched between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2, allowing the clamping arm 3 to abut forward in its initial state. This is to prevent excessive loosening during reverse release, as force is also required to the hand-held operating section 42 during the release process. Without a corresponding limiting structure, the force exerted during the release could easily cause injury to personnel or machinery, making the process safer and more reliable. The initial limiting post 72 can be a cylindrical post that passes through the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2.

[0034] The auxiliary arm 5 includes a left auxiliary plate 51 and a right auxiliary plate 52 symmetrically arranged at intervals, and a connecting sleeve 53 integrally connected between the left and right auxiliary plates 51 and 52 and sleeved on the second positioning shaft 62. The driving section 41 is clamped between the left and right auxiliary plates 51 and 52. The left side of the left auxiliary plate 51 is abutted against the right side of the left reinforcing positioning plate 1, and the right side of the right auxiliary plate 52 is abutted against the left side of the right reinforcing positioning plate 2. The abutting design improves the compactness of the structure and provides a certain frictional resistance to avoid excessive driving force during driving, which could cause excessive movement and damage to personnel or machinery. It also improves safety and robustness. The connecting sleeve 53 can be a cylindrical sleeve, which serves to connect and reinforce the left and right auxiliary plates 51 and 52.

[0035] Furthermore, a left washer 611, sleeved on the first positioning shaft 61, is spaced and clamped between the left side of the drive front lever forming part 31 and the right side of the left reinforcing positioning plate 1. A right washer 612, sleeved on the first positioning shaft 61, is spaced and clamped between the right side of the drive front lever forming part 31 and the left side of the right reinforcing positioning plate 2. The drive end needs a certain frictional resistance to ensure safe and reliable operation. However, the frictional resistance on the driven side at the front end should not be too large, otherwise it will affect the smoothness of the drive. But there should be an axial preload. Therefore, the left and right sides of the clamping arm 3 are not directly pressed against the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. Instead, relatively smaller washer 611 is used to clamp the sides. The sides of the clamping arm 3 are separated from the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2, respectively. The structure is optimized by using washer 612.

[0036] Furthermore, a first bushing 601 is embedded in both the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2, respectively, for the left and right ends of the first positioning shaft 61 to fit into. Similarly, a second bushing 602 is embedded in both the left and right reinforcing positioning plates 1 and 2, respectively, for the left and right ends of the second positioning shaft 62 to fit into. Both ends of the second positioning shaft 62 also need to be inserted into the left and right reinforcing positioning plates 1 and 2, as the spatial position of the second positioning shaft 62 is fixed. The first and second bushings can be fixed to the left and right reinforcing positioning plates 1 and 2 using existing welding or other methods. The bushing design ensures a more precise assembly of the positioning shaft on the left and right reinforcing positioning plates 1 and 2, and also facilitates smooth rotation and uniform force distribution.

[0037] Preferably, a locking bolt 81 extending in the left-right direction is fixed between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. A reinforcing fixing sleeve 82 for the screw of the locking bolt 81 to pass through is also sandwiched between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. Corresponding threads are formed on the left reinforcing positioning plate 1, the right reinforcing positioning plate 2, and the reinforcing fixing sleeve 82 for the screw of the locking bolt 81 to pass through and be tightened. Further, the locking limiting block 71 is rectangular and abuts against the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. A locking bolt 81 is also fixed on the locking limiting block 71. The locking limiting block 71 has a corresponding threaded hole for the screw of the locking bolt 81 to pass through. Of course, the locking bolt 81 is also simultaneously installed on the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. This design is also for the structural installation stability of the locking limiting block 71.

[0038] Furthermore, a reinforcing column can be inserted into the area between the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2. This reinforcing column can be a cylindrical structure, such as a reinforcing fixing sleeve 82, but with slightly longer dimensions on both sides to improve structural stability. Additionally, the tail end of the clamping arm 3, which is the end used to house the first linkage shaft 411, forms a slot for the drive section 41 to insert one end of the first linkage shaft 411. In other words, the tail end of the clamping arm 3 also forms a partition structure separating the left and right sides, with the corresponding end of the drive section 41 inserted and clamped between these two partitions. The first linkage shaft 411 passes between these two partition structures and the end of the drive section 41, further improving structural compactness. Furthermore, positioning grooves or holes can also be provided on the front side of the left reinforcing positioning plate 1 and the right reinforcing positioning plate 2 to facilitate installation and fixation with the frame, etc., for easy positioning during overall use.

[0039] Through the aforementioned design features, the overall structure has better coverage and is more compact, resulting in higher overall structural stability, better positional stability and accuracy, making it suitable for the production of products with higher quality requirements.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A manual clamping device, characterized in that, The system includes a left reinforcing positioning plate (1) and a right reinforcing positioning plate (2) spaced apart on the left and right sides, and a clamping arm (3) that can rotate up and down is provided between the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2), a driving arm (4) for driving the clamping arm (3) to rotate, and an auxiliary arm (5) for cooperating with the driving arm (4) to complete the locking and unlocking actions. A first positioning shaft (61) for the clamping arm (3) to rotate is provided between the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2), and a second positioning shaft (62) for the auxiliary arm (5) to rotate is also provided between the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2). The second positioning shaft (62) is located at the... Below the first positioning shaft (61), the drive arm (4) has a drive section (41) that can drive the clamping arm (3) and the auxiliary arm (5) to rotate clockwise or counterclockwise. One end of the drive section (41) is rotatably connected to the clamping arm (3) through the first linkage shaft (411), and the other end of the drive section (41) is rotatably connected to the auxiliary arm (5) through the second linkage shaft (412). In the initial state, the first linkage shaft (411) and the second positioning shaft (62) are respectively located above and below the second linkage shaft (412), and the first linkage shaft (411) is located below the first positioning shaft (61).

2. A manual clamping device according to claim 1, characterized in that, The clamping arm (3) is integrally connected to the portion between its two ends with a drive front lever forming part (31) that initially protrudes forward from the clamping arm (3). The first positioning shaft (61) passes through the front lever forming part (31). In the initial state, the clamping arm (3) extends from bottom to top and the first linkage shaft (411) passes through the lower end of the clamping arm (3). The upper end of the clamping arm (3) is integrally connected with a clamping head (30).

3. A manual clamping device according to claim 2, characterized in that, The clamping head (30) has several clamping assembly holes (300).

4. A manual clamping device according to claim 2, characterized in that, In the locked state, the angle between the drive section (41) and the auxiliary arm (5) is 175-180 degrees.

5. A manual clamping device according to claim 4, characterized in that, In the initial state, the drive section (41) extends obliquely upward from back to front, and the drive arm (4) also includes a handheld operation section (42) that extends backward and is integrally connected to the rear end of the drive section (41).

6. A manual clamping device according to claim 5, characterized in that, A locking limit block (71) is sandwiched between the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2) for the driving front lever forming part (31) to abut downward in the locked state. The locking limit block (71) is located in front of and below the first positioning shaft (61).

7. A manual clamping device according to claim 6, characterized in that, An initial limiting post (72) is sandwiched between the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2) for the clamping arm (3) to abut forward in the initial state.

8. A manual clamping device according to claim 7, characterized in that, The auxiliary arm (5) includes a left auxiliary plate (51) and a right auxiliary plate (52) symmetrically arranged at intervals on the left and right sides, and a connecting sleeve (53) integrally connected between the left auxiliary plate (51) and the right auxiliary plate (52) and sleeved on the second positioning shaft (62). The driving section (41) is abutted and clamped between the left auxiliary plate (51) and the right auxiliary plate (52). The left side of the left auxiliary plate (51) is abutted against the right side of the left reinforcing positioning plate (1), and the right side of the right auxiliary plate (52) is abutted against the left side of the right reinforcing positioning plate (2). The left side of the driving front lever forming part (31) is spaced apart from the right side of the left reinforcing positioning plate (1) and a left gasket (611) sleeved on the first positioning shaft (61) is clamped. The right side of the driving front lever forming part (31) is spaced apart from the left side of the right reinforcing positioning plate (2) and a right gasket (612) sleeved on the first positioning shaft (61) is clamped.

9. A manual clamping device according to claim 8, characterized in that, A first bushing (601) is embedded in both the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2), and is respectively fitted into the left and right ends of the first positioning shaft (61). A second bushing (602) is embedded in both the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2), and is respectively fitted into the left and right ends of the second positioning shaft (62).

10. A manual clamping device according to claim 9, characterized in that, A locking bolt (81) extending in the left and right directions is fixed between the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2). A reinforcing fixing sleeve (82) for the screw of the locking bolt (81) to pass through is also sandwiched between the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2). The locking limiting block (71) is rectangular and abuts against the left reinforcing positioning plate (1) and the right reinforcing positioning plate (2). A locking bolt (81) is also inserted on the locking limiting block (71).

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