Manual clamp

Abstract

The utility model discloses a manual clamp, which belongs to the technical field of manual tools, and comprises a sliding rod, a fixed chuck, a movable chuck and a handle, the fixed chuck is fixed on the sliding rod, the manual clamp further comprises a moving part and a limiting structure, the moving part is slidably mounted on the sliding rod, the movable chuck is movably mounted on the moving part, and the handle is rotatably mounted on the moving part. The limiting structure comprises an elastic piece and a limiting piece, the limiting piece is installed on the sliding rod in a sliding mode, the limiting piece is obliquely arranged, the two ends of the elastic piece abut against the moving piece and the limiting piece respectively, the elastic force of the elastic piece enables the limiting piece to abut against the sliding rod and the moving piece, and the sliding rod and the moving piece are locked. A limiting piece of the limiting structure is installed on a sliding rod in a sliding mode, the limiting piece is obliquely arranged, the two ends of an elastic piece abut against a moving piece and the limiting piece respectively, the elastic force of the elastic piece enables the limiting piece to abut against the sliding rod and the moving piece, the sliding rod and the moving piece are locked, in the clamping process, a movable chuck is not prone to sliding relative to the sliding rod, and an object to be clamped can be clamped.

Description

TECHNICAL FIELD

[0001] The utility model relates to hand tools technical field especially hand clamp. BACKGROUND

[0002] The F-shaped clamp is a kind of commonly used hand clamp, including slide bar, fixed chuck, movable chuck, fixed chuck is fixed in the one end of slide bar, movable chuck is slidably sleeved on slide bar, fixed chuck, movable chuck extend to the same side of slide bar make the whole F clamp show the shape of letter "F", it is called F-shaped clamp.

[0003] The movable chuck of existing hand clamp is slidably sleeved on slide bar, after long time use, the connecting portion of movable chuck and slide bar is prone to wear, make movable chuck slide relative to slide bar in clamping process, cannot clamp the article to be clamped. UTILITY MODEL CONTENTS

[0004] In order to overcome the insufficient of prior art, one of the purposes of the utility model is to provide a kind of hand clamp, movable chuck is not prone to slide relative to slide bar in clamping process, can clamp the article to be clamped.

[0005] One of the purposes of the utility model is realized by the following technical scheme:

[0006] Hand clamp, including slide bar, fixed chuck, movable chuck and handle, the fixed chuck is fixed in the slide bar, the hand clamp further includes moving piece and limit structure, the moving piece is slidably installed on the slide bar, the movable chuck is movably installed on the moving piece, the handle is rotatably installed on the moving piece, the limit structure includes elastic member and limit sheet, the limit sheet is slidably installed on the slide bar, the limit sheet is obliquely arranged, the elastic member is respectively in contact with the moving piece and the limit sheet at both ends, the elastic force of the elastic member makes the limit sheet contact the slide bar and the moving piece, so that the slide bar and the moving piece are locked.

[0007] Further, the moving piece includes slide base, extension arm and mounting end, the slide base and the mounting end are located at both ends of the extension arm respectively, the slide base is provided with receiving space and first through hole penetrating the receiving space, the slide bar is at least partially located in the first through hole, and the limit sheet is partially located in the receiving space.

[0008] Further, the elastic member is accommodated in the receiving space, and the slide base is further provided with an opening, the opening is located on the side of the receiving space, and part of the limit sheet extends out of the receiving space from the opening.

[0009] Further, the limit sheet is provided with a mounting hole, the slide bar is partially located in the mounting hole, and the diameter of the mounting hole is greater than the outer diameter of the slide bar.

[0010] Further, the sliding seat is provided with a limiting groove in communication with the receiving space, and the end of the limiting piece is located in the limiting groove and abuts against the top of the limiting groove.

[0011] Further, the handle is rotatably installed on the installation end, the handle comprises a holding portion and an end portion extending from the holding portion, and the end portion abuts against the movable chuck to make the movable chuck close to or away from the fixed chuck when the handle rotates relative to the installation end.

[0012] Further, the fixed chuck comprises a first body and a first clamping pad fixed on the first body, and the movable chuck comprises a second body and a second clamping pad fixed on the second body, and the first clamping pad is arranged opposite to the second clamping pad.

[0013] Further, the first clamping pad and the second clamping pad are both provided with anti-skid grooves.

[0014] Further, the manual clamp further comprises a rotating shaft, the handle is rotatably installed on the installation end through the rotating shaft, the movable chuck is provided with a connecting groove, and the rotating shaft is partially located in the connecting groove.

[0015] Further, the handle comprises a body and a transmission member fixed on the body, the body is rotatably installed on the installation end, and the transmission member drives the movable chuck to make the movable chuck close to or away from the fixed chuck when the body rotates relative to the installation end.

[0016] Further, the transmission member is provided with a transmission gear, and the movable chuck is provided with a rack, and the rack is engaged with the transmission gear.

[0017] Further, the manual clamp further comprises a rotating shaft and an installation shaft, the rotating shaft and the installation shaft are both installed on the installation end and are parallel to each other, the handle is rotatably installed on the installation end through the rotating shaft, the movable chuck is provided with a connecting groove, and the installation shaft is partially located in the connecting groove to movably install the movable chuck on the installation end.

[0018] Further, the manual clamp further comprises a locking structure, the locking structure is installed on the body, the body is locked with the installation end when the locking structure cooperates with the installation end, and the body is unlocked with the installation end when the locking structure is separated from the installation end.

[0019] Further, the mounting end comprises a ratchet wheel, the locking structure comprises a pawl, when the ratchet wheel engages with the pawl, the body is locked with the mounting end; when the ratchet wheel is separated from the pawl, the body is unlocked with the mounting end.

[0020] Further, the locking structure comprises a locking piece and a reset piece, the pawl is arranged on the locking piece, the locking piece is rotatably arranged on the body, the reset piece is an elastic structure, one end of the reset piece abuts against the locking piece, and the other end of the reset piece abuts against the body.

[0021] Compared with the prior art, the manual clamp has the following advantages:

[0022] (1) The limiting piece of the limiting structure is slidingly arranged on the sliding rod, the limiting piece is obliquely arranged, the two ends of the elastic member abut against the moving member and the limiting piece respectively, the elastic force of the elastic member makes the limiting piece abut against the sliding rod and the moving member, the sliding rod and the moving member are locked, the movable chuck is not easy to slide relative to the sliding rod in the clamping process, and the article to be clamped can be clamped;

[0023] (2) In the light manual clamp, the handle is rotated relative to the mounting end, the end abuts against the movable chuck to make the movable chuck close to or away from the fixed chuck, the overall structure of the clamp is simple, and the clamp is convenient to use;

[0024] (3) In the heavy manual clamp, the handle is rotated relative to the mounting end, the transmission member fixed to the handle body drives the movable chuck to make the movable chuck close to or away from the fixed chuck, force transmission is more stable, and after the manual clamp clamps the article, the handle is locked through the arrangement of the locking structure, so that the article to be clamped is prevented from being loosened and falling due to accidental rotation of the handle, and the safety of the manual clamp is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective view of the first embodiment of the manual clamp of the utility model in a clamping state;

[0026] Figure 2 It is an exploded view of the first embodiment of the manual clamp;

[0027] Figure 3 It is a perspective view of the moving member of the first embodiment of the manual clamp;

[0028] Figure 4 It is a perspective view of the movable chuck of the first embodiment of the manual clamp;

[0029] Figure 5 It is a perspective view of the handle of the first embodiment of the manual clamp;

[0030] Figure 6 It is a perspective view of the first embodiment of the manual clamp;

[0031] Figure 7 Figure 1 is a perspective view of a first embodiment of the manual clamp in a released state;

[0032] Figure 8 Figure 2 is a perspective view of a second embodiment of the manual clamp in a clamped state;

[0033] Figure 9 Figure 3 is a perspective view of a moving part of the second embodiment of the manual clamp;

[0034] Figure 10 Figure 4 is a perspective view of a handle of the second embodiment of the manual clamp;

[0035] Figure 11 Figure 5 is a perspective view of a partial structure of the second embodiment of the manual clamp;

[0036] Figure 12 Figure 6 is a perspective view of a partial structure of the second embodiment of the manual clamp;

[0037] Figure 13 Figure 1 is a perspective view of a first embodiment of the manual clamp in a released state.

[0038] In the figure: 10, slide rod; 11, fixed part; 110, fixed hole; 20, fixed chuck; 21, first main body; 22, first clamping pad; 30, fixed assembly; 31, screw rod; 310, knob; 311, rod body; 32, nut; 40, limiting structure; 41, elastic piece; 42, limiting sheet; 420, mounting hole; 50, moving part; 51, sliding seat; 510, containing space; 511, opening; 512, first through hole; 513, limiting groove; 514, connecting column; 52, extension arm; 53, mounting end; 530, first pivot hole; 531, convex edge; 532, ratchet wheel; 533, second through hole; 60, movable chuck; 61, second main body; 610, end face; 611, connecting part; 6110, connecting groove; 6111, rack; 62, second clamping pad; 620, anti-skid groove; 70, rotating shaft; 80, handle; 81, body; 810, gripping part; 8101, weight-reducing groove; 811, end part; 812, side plate; 813, limiting column; 814, gap; 815, second pivot hole; 82, locking structure; 820, locking piece; 8201, button; 8202, locking part; 8203, pawl; 821, reset piece; 83, transmission piece; 830, transmission tooth; 90, mounting shaft. DETAILED DESCRIPTION

[0039] Clearly, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be another intermediate component fixed by the intermediate component. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be another intermediate component. When a component is referred to as being "provided" to another component, it can be directly provided on the other component or there can be another intermediate component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0042] Please refer to Figure 1 and Figure 8 The manual clamp comprises a slide rod 10, a fixed clamp head 20, a limiting structure 40, a moving piece 50, a movable clamp head 60, a rotating shaft 70 and a handle 80. The slide rod 10 extends in a straight line direction, the fixed clamp head 20 is fixed to the end of the slide rod 10, the moving piece 50 is slidingly installed on the slide rod 10, and the moving piece 50 extends to the side where the fixed clamp head 20 is located, so that the manual clamp forms an F-shaped structure. The limiting structure 40 is installed at the connection between the moving piece 50 and the slide rod 10, and locks the moving piece 50 to prevent the moving piece 50 from sliding relative to the slide rod 10 when the clamp clamps an article. The movable clamp head 60 is movably installed on the moving piece 50, and the handle 80 is rotatably installed on the moving piece 50 through the rotating shaft 70. The handle 80 rotates relative to the moving piece 50 to drive the movable clamp head 60 to move, and when the movable clamp head 60 approaches the fixed clamp head 20, it clamps the article (workpiece) to be clamped; when the movable clamp head 60 moves away from the fixed clamp head 20, it releases the article (workpiece) to be clamped.

[0043] The manual clamp comprises two embodiments in the present application. In the first embodiment, the manual clamp is a light clamp used for clamping workpieces which are easily damaged and have small weight. In the second embodiment, the manual clamp is a heavy clamp used for clamping workpieces which have large strength and heavy weight. Embodiment 1

[0044] Figures 1 to 7 In the first embodiment of the manual clamp of the present application, the manual clamp comprises a slide rod 10, a fixed clamp head 20, a fixing assembly 30, a limiting structure 40, a moving piece 50, a movable clamp head 60, a rotating shaft 70 and a handle 80.

[0045] Please continue to refer to Figure 2 The slide rod 10 is linear, and is used to connect the fixed clamp head 20 and the movable clamp head 60. By adjusting the position of the movable clamp head 60 on the slide rod 10, the distance between the fixed clamp head 20 and the movable clamp head 60 can be fixed to adapt to different thicknesses of the to-be-clamped articles. The end of the slide rod 10 is provided with a fixed part 11, the fixed part 11 is provided with a fixed hole 110, and the fixed clamp head 20 is fixed to the fixed hole 110 through the fixing assembly 30.

[0046] The fixed clamp head 20 comprises a first main body 21 and a first clamping pad 22 fixed to the first main body 21. The first main body 21 is in the shape of inverted L, and the first clamping pad 22 is made of flexible material and is located on the downward side of the fixed clamp head 20. When the fixed clamp head 20 clamps the articles, the first clamping pad 22 is in contact with the articles to prevent damage to the articles.

[0047] The fixing assembly 30 comprises a screw rod 31 and a nut 32. The screw rod 31 comprises a knob 310 and a rod body 311 fixedly connected with the knob 310, the rod body 311 is provided with external threads, the rod body 311 penetrates through the first main body 21 and the fixed hole 110, and the nut 32 is installed on the rod body 311. When the nut 32 is tightened, the fixed clamp head 20 is fixed to the fixed part 11 of the slide rod 10.

[0048] The limiting structure 40 comprises an elastic piece 41 and a limiting sheet 42. The elastic piece 41 is used to provide elastic force to the limiting sheet 42, so that the limiting sheet 42 can abut against the slide rod 10 and the slide base 51, thereby locking the slide rod 10 and the slide base 51. In the embodiment, the elastic piece 41 is a spring, the elastic piece 41 is sleeved on the slide rod 10, the two ends of the elastic piece 41 abut against the slide base 51 and the limiting sheet 42 respectively, and the elastic piece 41 provides upward elastic force to the limiting sheet 42. The limiting sheet 42 is sleeved on the slide rod 10, and the limiting sheet 42 is arranged obliquely. Specifically, the limiting sheet 42 is provided with a mounting hole 420, the hole diameter of the mounting hole 420 is greater than the outer diameter of the slide rod 10, the limiting sheet 42 is made of high-strength material, and preferably, the limiting sheet 42 is a metal sheet.

[0049] Please continue to refer to Figure 3 The moving piece 50 comprises a slide base 51, an extension arm 52 and a mounting end 53, the slide base 51, the extension arm 52 and the mounting end 53 are integrally formed, and the slide base 51 and the mounting end 53 are respectively located at the two ends of the extension arm 52.

[0050] The sliding seat 51 is hollow, and a receiving space 510 is formed in the sliding seat 51 for mounting the limiting structure 40. The sliding seat 51 is further provided with an opening 511, a first through hole 512, and a limiting groove 513. The opening 511 is located on the side of the sliding seat 51 away from the extension arm 52, and is used for mounting the elastic member 41 and the limiting piece 42 and enabling the limiting piece 42 to extend out of the opening 511 for facilitating user operation. The first through hole 512 is vertically arranged and penetrates the sliding seat 51, and the slide rod 10 is arranged in the first through hole 512. The sliding seat 51 slides along the slide rod 10 through the first through hole 512 to adjust the distance between the fixed chuck 20 and the movable chuck 60. The limiting groove 513 is in communication with the receiving space 510 and is arranged opposite to the opening 511. The limiting groove 513 is used for receiving the end of the limiting piece 42 to keep the limiting piece 42 in an inclined state.

[0051] The mounting end 53 is provided with a first pivot hole 530 and a convex edge 531. The pivot shaft 70 is mounted in the first pivot hole 530, and the handle 80 is pivotally mounted on the mounting end 53 through the pivot shaft 70. The convex edge 531 limits the rotation angle of the handle 80 to prevent the handle 80 from being excessively rotated.

[0052] Please continue to refer to Figure 4 The movable chuck 60 comprises a second main body 61 and a second clamping pad 62 fixed to the second main body 61. The second main body 61 comprises an end face 610 and a connecting portion 611 extending from the bottom of the end face 610 on both sides. Each connecting portion 611 is provided with a connecting groove 6110 for movably mounting the movable chuck 60 on the mounting end 53 of the moving piece 50. Specifically, the length of the connecting groove 6110 is greater than the diameter of the pivot shaft 70, and the pivot shaft 70 is partially arranged in the connecting groove 6110. When the movable chuck 60 is driven to move by the handle 80, the pivot shaft 70 guides and limits the movable chuck 60.

[0053] The second clamping pad 62 covers the end face 610 and is made of flexible material to prevent damage to the clamped object. The second clamping pad 62 is provided with an anti-skid groove 620 to prevent the clamped object from sliding. Specifically, the anti-skid groove 620 is in the shape of a cross, and the cross-section of the anti-skid groove 620 is in the shape of a V.

[0054] Please continue to refer to Figure 5The handle 80 comprises a body 81, the body 81 comprises a holding part 810 and an end part 811. The holding part 810 is used for a user to hold, a plurality of lightening grooves 8101 are arranged on the side of the holding part 810 away from the slide bar 10, so as to reduce the weight of the handle 80. The end part 811 extends from the end of the holding part 810, the end part 811 comprises two side plates 812 and a limiting column 813 connecting the two side plates 812. The two side plates 812 are arranged in parallel and are spaced apart, a gap 814 is formed between the two side plates 812, and a second pivot hole 815 penetrates through the two side plates 812. The handle 80 is pivotally installed on the mounting end 53 through the second pivot hole 815.

[0055] Please continue to refer to Figure 6 When the manual clamp is assembled, the fixed chuck 20 is fixed on the end of the slide bar 10 through the fixing assembly 30. The slide block 51 is slidingly installed on the slide bar 10 through the first through hole 512, the elastic member 41 is in contact with the slide block 51 and the limiting sheet 42 at both ends respectively, and provides upward elastic force to the limiting sheet 42. The limiting sheet 42 is sleeved on the slide bar 10 and is arranged in an inclined manner. The movable chuck 60 is movably installed on the mounting end 53 of the moving piece 50 through the connecting groove 6110 and the rotating shaft 70, and the handle 80 is pivotally installed on the mounting end 53 through the second pivot hole 815.

[0056] Please continue to refer to Figure 1 and Figure 7 As shown by the arrow in Figure 1 When the manual clamp is used, the object to be clamped is placed between the fixed chuck 20 and the movable chuck 60 and is tightly attached to the fixed chuck 20, the end of the limiting sheet 42 is pressed downward, the limiting sheet 42 is not in contact with the slide bar 10 and the slide block 51, the slide bar 10 and the slide block 51 are unlocked, the moving piece 50 is moved upward, the movable chuck 60 is tightly attached to the object to be clamped, and the moving piece 50 is released after being moved to the position, the limiting sheet 42 is in contact with the slide bar 10 and the slide block 51 under the elastic force of the elastic member 41, the slide bar 10 and the slide block 51 are locked. The handle 80 is rotated counterclockwise, the end part 811 of the handle 80 is in contact with the movable chuck 60, the movable chuck 60 is close to the fixed chuck 20, the object to be clamped is clamped tightly, and the handle 80 is self-locked under the gravity of the object to be clamped.

[0057] When the object to be clamped needs to be released, the handle 80 is rotated clockwise, the movable chuck 60 moves downward, the end of the limiting sheet 42 is pressed downward, the limiting sheet 42 is not in contact with the slide bar 10 and the slide block 51, the slide bar 10 and the slide block 51 are unlocked, the moving piece 50 is moved downward, and the movable chuck 60 is away from the object to be clamped. Embodiment 2

[0058] Figures 8 to 13For the second embodiment of the manual clamp of the present application, in the embodiment, the manual clamp is a heavy-duty clamp, and the manual clamp comprises a slide rod 10, a fixed clamp head 20, a limiting structure 40, a moving piece 50, a movable clamp head 60, a rotating shaft 70, a handle 80 and a mounting shaft 90.

[0059] In the second embodiment, the slide rod 10 and the fixed clamp head 20 are substantially the same as those in the first embodiment, and the difference lies in that the first body 21 is in an arc structure due to the large weight of the object to be clamped.

[0060] Please continue to refer to Figure 9 The slide base 51 of the moving piece 50 further comprises a connecting column 514, which increases the structural strength of the slide base 51. The mounting end 53 of the moving piece 50 is provided with a ratchet wheel 532, which is used to lock the handle 80.

[0061] Please continue to refer to Figure 10 The handle 80 comprises a body 81, a locking structure 82 and a transmission member 83. The locking structure 82 is mounted on the body 81 and can be locked or unlocked with the mounting end 53. The transmission member 83 is fixed to the body 81, and the transmission member 83 converts the rotation of the handle 80 into linear motion and transmits it to the movable clamp head 60. Specifically, the locking structure 82 comprises a locking piece 820 and a return piece 821. The locking piece 820 is rotatably mounted on the body 81. The locking piece 820 comprises a button 8201 and a locking portion 8202 fixedly connected with the button 8201. The end of the locking portion 8202 is provided with a pawl 8203, which can be engaged with the ratchet wheel 532. The return piece 821 is a spring, one end of which is in abutment with the body 81, and the other end is in abutment with the button 8201. The return piece 821 provides a return elastic force to the button 8201. The transmission member 83 is fixed to the body 81 and is provided with a transmission tooth 830, which is engaged with the rack 6111 of the movable clamp head 60.

[0062] Please continue to refer to Figure 11 The rotating shaft 70 and the mounting shaft 90 are both mounted on the mounting end 53 and are arranged in parallel. The rotating shaft 70 is used to rotatably mount the body 81 on the mounting end 53, and the mounting shaft 90 is used to movably mount the movable clamp head 60 on the mounting end 53.

[0063] Please continue to refer to Figure 8 , Figure 11 , Figure 12 and Figure 13 , as Figure 8When the manual clamp is used, the article to be clamped is placed between the fixed clamp head 20 and the movable clamp head 60, and is tightly attached to the fixed clamp head 20. The end of the limiting piece 42 is pressed downward, the limiting piece 42 does not abut against the sliding rod 10 and the sliding seat 51, the sliding rod 10 and the sliding seat 51 are unlocked, the moving piece 50 is moved upward, and the movable clamp head 60 is tightly attached to the article to be clamped. When the moving piece 50 is moved to the position, the limiting piece 42 is released, the limiting piece 42 abuts against the sliding rod 10 and the sliding seat 51 under the elastic force of the elastic piece 41, and the sliding rod 10 and the sliding seat 51 are locked. The button 8201 is pressed, the locking piece 820 is counterclockwise rotated, the pawl 8203 is separated from the ratchet wheel 532, the handle 80 is unlocked from the moving piece 50, the handle 80 is counterclockwise rotated, the transmission teeth 830 of the transmission piece 83 are engaged with the rack 6111, the movable clamp head 60 is pushed to be close to the fixed clamp head 20, and the article to be clamped is clamped tightly. The button 8201 is released, the locking piece 820 is clockwise rotated to the reset position under the elastic force of the reset piece 821, the pawl 8203 is buckled with the ratchet wheel 532, and the handle 80 is locked with the moving piece 50.

[0064] When the article to be clamped needs to be released, the button 8201 is pressed, the locking piece 820 is counterclockwise rotated, the pawl 8203 is separated from the ratchet wheel 532, the handle 80 is unlocked from the moving piece 50, the handle 80 is clockwise rotated, the transmission teeth 830 of the transmission piece 83 are engaged with the rack 6111, the movable clamp head 60 is pushed to be moved downward, the end of the limiting piece 42 is pressed downward, the limiting piece 42 does not abut against the sliding rod 10 and the sliding seat 51, the sliding rod 10 and the sliding seat 51 are unlocked, and the moving piece 50 is moved downward, so that the movable clamp head 60 is away from the article to be clamped.

[0065] The limiting structure 40 is arranged, the limiting piece 42 of the limiting structure 40 is slidingly installed on the sliding rod 10, the limiting piece 42 is obliquely arranged, the both ends of the elastic piece 41 abut against the moving piece 50 and the limiting piece 42 respectively, the elastic force of the elastic piece 41 makes the limiting piece 42 abut against the sliding rod 10 and the moving piece 50, the sliding rod 10 and the moving piece 50 are locked, the movable clamp head 60 is not easily slid relative to the sliding rod 10 during clamping, and the article to be clamped can be clamped. In the light manual clamp of the first embodiment, the handle 80 is rotated relative to the mounting end 53, the end 811 abuts against the movable clamp head 60 to make the movable clamp head 60 close to or away from the fixed clamp head 20, the overall structure of the clamp is simple, and the clamp is convenient to use. In the heavy manual clamp of the second embodiment, the handle 80 is rotated relative to the mounting end 53, the transmission piece 83 fixed to the handle body 81 drives the movable clamp head 60 to make the movable clamp head 60 close to or away from the fixed clamp head 20, the force transmission is more stable, the handle 80 is locked after the article to be clamped is clamped by the manual clamp through the arrangement of the locking structure 82, the article to be clamped is prevented from falling due to the accidental rotation of the handle 80, and the safety of the manual clamp is improved.

[0066] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvement evolutions can be made, which are equivalent modification and evolution of the above embodiments according to the utility model essential technology, and these all belong to the protection range of the utility model.

Claims

1. A manual clamp comprising a slide bar, a fixed chuck, a movable chuck and a handle, the fixed chuck being fixed to the slide bar, characterized in that: The manual clamp further comprises a moving piece and a limiting structure, the moving piece is slidingly installed on the slide rod, the movable chuck is movably installed on the moving piece, the handle is rotatably installed on the moving piece, the limiting structure comprises an elastic piece and a limiting sheet, the limiting sheet is slidingly installed on the slide rod, the limiting sheet is obliquely arranged, the two ends of the elastic piece are respectively in abutment with the moving piece and the limiting sheet, and the elastic force of the elastic piece makes the limiting sheet abut against the slide rod and the moving piece, so that the slide rod and the moving piece are locked.

2. The hand clamp of claim 1, wherein: The moving piece comprises a sliding seat, an extension arm and an installation end, the sliding seat and the installation end are respectively located at the two ends of the extension arm, the sliding seat is provided with a receiving space and a first through hole penetrating through the receiving space, and the slide rod is at least partially located in the first through hole; and the limiting sheet is partially located in the receiving space.

3. The hand clamp of claim 2, wherein: The elastic piece is received in the receiving space, and the sliding seat is further provided with an opening, the opening is located at the side of the receiving space, and part of the limiting sheet extends out of the receiving space from the opening.

4. The hand clamp of claim 2, wherein: The limiting sheet is provided with an installation hole, the slide rod is partially located in the installation hole, and the diameter of the installation hole is greater than the outer diameter of the slide rod.

5. The hand clamp of claim 2, wherein: The sliding seat is further provided with a limiting groove, the limiting groove is communicated with the receiving space, and the end of the limiting sheet is located in the limiting groove and abuts against the top of the limiting groove.

6. The hand clamp of any one of claims 2-5, wherein: The handle is rotatably installed on the installation end, the handle comprises a holding portion and an end portion extending out of the holding portion, the handle is rotated relative to the installation end, and the end portion abuts against the movable chuck to make the movable chuck close to or away from the fixed chuck.

7. The hand clamp of claim 6, wherein: The fixed chuck comprises a first main body and a first clamping pad fixed to the first main body, the movable chuck comprises a second main body and a second clamping pad fixed to the second main body, and the first clamping pad and the second clamping pad are oppositely arranged.

8. The hand clamp of claim 7, wherein: The first clamping pad and the second clamping pad are both provided with anti-skid grooves.

9. The hand clamp of claim 6, wherein: The manual clamp further comprises a rotating shaft, the handle is rotatably installed on the installation end through the rotating shaft, and the movable chuck is provided with a connecting groove, and the rotating shaft is partially located in the connecting groove.

10. The hand clamp of any one of claims 2-5, wherein: The handle comprises a body and a transmission piece fixed to the body, the body is rotatably installed on the installation end, and when the body is rotated relative to the installation end, the transmission piece drives the movable chuck to make the movable chuck close to or away from the fixed chuck.

11. The hand clamp of claim 10, wherein: The transmission piece is provided with a transmission gear, the movable chuck is provided with a rack, and the rack is engaged with the transmission gear.

12. The hand clamp of claim 10, wherein: The manual clamp further comprises a rotating shaft and an installation shaft, the rotating shaft and the installation shaft are both installed on the installation end and are parallel to each other, the handle is rotatably installed on the installation end through the rotating shaft, the movable chuck is provided with a connecting groove, and the installation shaft is partially located in the connecting groove to movably install the movable chuck on the installation end.

13. The hand clamp of claim 10, wherein: The manual clamp further comprises a locking structure mounted on the body, when the locking structure cooperates with the mounting end, the body is locked with the mounting end; when the locking structure separates from the mounting end, the body is unlocked with the mounting end.

14. The hand clamp of claim 13, wherein: The mounting end comprises a ratchet wheel, the locking structure comprises a pawl, when the ratchet wheel cooperates with the pawl, the body is locked with the mounting end; when the ratchet wheel separates from the pawl, the body is unlocked with the mounting end.

15. The hand clamp of claim 14, wherein: The locking structure comprises a locking piece and a reset piece, the pawl is arranged on the locking piece, the locking piece is rotatably mounted on the body, the reset piece is an elastic structure, one end of the reset piece abuts against the locking piece, and the other end of the reset piece abuts against the body.

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