CN223029464U

CN223029464U - A bar clamp

Info

Publication number: CN223029464U
Application number: CN202421557754.2U
Authority: CN
Inventors: 刘海锋; 胡玲
Original assignee: Kunshan Jindayou Precision Mould Co ltd
Current assignee: Kunshan Jindayou Precision Mould Co ltd
Priority date: 2024-07-03
Filing date: 2024-07-03
Publication date: 2025-06-27
Anticipated expiration: 2034-07-03

Abstract

The utility model relates to the technical field of clamps, in particular to a bar clamp which comprises a base, wherein a round tube is detachably arranged on the upper surface of the base, a clamping structure is arranged on the circular arc surface of the round tube, the clamping structure comprises four fixed tubes, the fixed tubes are fixedly connected and communicated with the round tube, the inner wall of each fixed tube is slidably connected with a top block, the inner thread of each fixed tube is connected with a bolt, the lower end of each bolt is rotatably connected with a pressing block, the pressing blocks are slidably connected with the fixed tubes, the inner thread of each top block is connected with a threaded rod, one end of each threaded rod is fixedly connected with an adjusting block, and the circular arc surface of each threaded rod is fixedly connected with a swivel. According to the clamping structure, the material rod can be clamped by the rotating bolt by utilizing the self-locking property of the threads, and the strength of clamping the material rod can be adjusted by rotating the bolt, so that the practicability of the clamp is improved.

Description

Bar clamp

Technical Field

The utility model relates to the technical field of clamps, in particular to a bar clamp.

Background

The fixture is a tool for clamping and fixing a workpiece, is commonly used in working procedures such as machining, assembling, welding and testing, can ensure that the workpiece keeps a stable and accurate position in the operation process, and also needs to be used for clamping and fixing a material rod when the material rod is machined.

In the prior art, patent literature with an authorized bulletin number of CN218426927U appears, the patent literature discloses a bar clamping tool, a fixing frame is arranged on a base, a jack is arranged in the center of the fixing frame, a plurality of through upper slots and lower slots are respectively formed in the wall surfaces of the upper end and the lower end of the fixing frame, a plurality of upper clamping jaws and lower clamping jaws are respectively inserted into the upper slots and the lower slots, and the inner ends of the upper clamping jaws and the lower clamping jaws extend into the jack.

The clamping device has the following defects that when the material rod is clamped, the upper clamping part and the lower clamping part are required to be manually pushed to be abutted against the arc surface of the material rod, then the upper clamping part and the lower clamping part are fixed, the purpose of clamping the material rod is realized by utilizing the friction force between the upper clamping part and the lower clamping part and the material rod, but the strength of manually pushing the upper clamping part and the lower clamping part to be abutted against the arc surface of the material rod is small, so that the material rod is difficult to be stably clamped and fixed, and the practicability of the clamp is reduced.

Thus, a bar clamp is proposed.

Disclosure of utility model

The utility model aims to solve the defect that the rod is difficult to stably clamp and fix because the strength of manually pushing an upper clamping part and a lower clamping part to prop against the arc surface of the rod is small.

In order to achieve the aim, the bar clamp comprises a base, wherein a round tube is detachably arranged on the upper surface of the base, a clamping structure is arranged on the arc surface of the round tube, the clamping structure comprises four fixed tubes, the fixed tubes are fixedly connected and communicated with the round tube, a top block is slidably connected to the inner wall of each fixed tube, a bolt is connected with the inner thread of each fixed tube, a pressing block is rotatably connected to the lower end of each bolt, and the pressing blocks are slidably connected with the fixed tubes.

The clamping structure has the advantages that the clamping structure is arranged, the material rod can be clamped by means of the rotating bolt by utilizing the self-locking property of the threads, and the strength of clamping the material rod can be adjusted by rotating the bolt, so that the practicability of the clamp is improved.

Preferably, the internal thread of kicking piece is connected with the threaded rod, the one end fixedly connected with regulating block of threaded rod.

The clamping device has the advantages that the threaded rod drives the adjusting block to move by means of threads when rotating, and the material rods with different diameters can be clamped by adjusting the position of the adjusting block.

Preferably, the arc surface of the threaded rod is fixedly connected with a swivel.

The above components have the effect that the rotating ring is rotated, and the rotating ring drives the threaded rod to rotate.

Preferably, the lower surface of the top block is fixedly connected with a plate spring, and one end of the plate spring is fixedly connected with the fixed pipe.

The parts have the advantages that when the plate spring is contracted, the top block slides back into the fixed pipe by the pull force of the plate spring, so that the top block is automatically reset.

Preferably, the side wall of the pressing block is fixedly connected with a positioning block.

The pressing block can drive the positioning block to move when moving, the positioning block can limit the moving distance of the pressing block, and the pressing block is prevented from falling out of the fixed pipe.

Preferably, the inner wall of pipe is equipped with protective structure, protective structure includes the backup pad, backup pad and pipe fixed connection, two arc holes have been seted up on the surface of backup pad, the inner wall sliding connection in arc hole has the fixture block, the upper end fixedly connected with mounting panel of fixture block, the upper surface fixedly connected with rubber pad of mounting panel, the lower surface fixedly connected with rubber ring of mounting panel, the rubber ring supports the surface at the backup pad.

The protective structure is arranged, so that the material rod can be contacted with the rubber pad after being inserted into the circular tube, and the rubber pad and the rubber ring are matched to buffer the material rod, so that the condition that the lower end of the material rod is deformed and damaged due to severe collision is avoided.

Preferably, two round holes are formed in the surface of the supporting plate, the round holes are communicated with the arc-shaped holes, a stop block is fixedly connected to the lower end of the clamping block, and the size of the stop block is matched with the size of the round holes.

The effect that above-mentioned parts reached is that the mounting panel rotates and can make the fixture block slide into the inner wall in arc hole, and the dog reaches the effect that prevents the fixture block to slide upwards to the restriction mounting panel's position.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. According to the clamping structure, the material rod can be clamped by the rotating bolt by using the self-locking property of the threads, and the strength of clamping the material rod can be adjusted by rotating the bolt, so that the practicability of the clamp is improved.

2. According to the utility model, the protection structure is arranged, so that the material rod can be contacted with the rubber pad after being inserted into the circular tube, and the rubber pad is matched with the rubber ring to buffer the material rod, so that the condition that the lower end of the material rod is deformed and damaged due to severe collision is avoided.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

FIG. 2 is a schematic cross-sectional view of a round tube of the present utility model;

FIG. 3 is a schematic cross-sectional view of a stationary pipe according to the present utility model;

fig. 4 is a schematic view showing a split structure of the support plate of the present utility model.

The illustration is 1, a base, 2, a round tube, 3, a clamping structure, 31, a fixed tube, 32, a top block, 33, a bolt, 34, a pressing block, 35, a threaded rod, 36, an adjusting block, 37, a swivel, 38, a plate spring, 39, a positioning block, 4, a protection structure, 41, a supporting plate, 42, an arc-shaped hole, 43, a clamping block, 44, a mounting plate, 45, a rubber pad, 46, a rubber ring, 47, a stop block, 48 and a round hole.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

As shown in fig. 1-4, the utility model provides a bar clamp, which comprises a circular tube 2 detachably arranged on the upper surface of a base 1, wherein a clamping structure 3 is arranged on the arc surface of the circular tube 2, and a protective structure 4 is arranged on the inner wall of the circular tube 2.

The specific arrangement and function of the clamping structure 3 and the protective structure 4 will be described in detail below.

As shown in fig. 2 and 3, the clamping structure 3 comprises four fixed pipes 31, the fixed pipes 31 are fixedly connected with the round pipes 2 and are communicated with each other, the top blocks 32 are slidably connected to the inner walls of the fixed pipes 31, the bolts 33 are fixedly connected to the inner surfaces of the fixed pipes 31 in a threaded manner, the pressing blocks 34 are slidably connected to the fixed pipes 31, the threaded rods 35 are fixedly connected to the inner surfaces of the top blocks 32, one ends of the threaded rods 35 are fixedly connected with the adjusting blocks 36, the threaded rods 35 drive the adjusting blocks 36 to move through threads when rotating, the material bars with different diameters can be clamped through adjusting the positions of the adjusting blocks 36, the rotating rings 37 are fixedly connected to the circular arc surfaces of the threaded rods 35, the rotating rings 37 are rotated, the threaded rods 35 are driven to rotate, the lower surfaces of the top blocks 32 are fixedly connected with the plate springs 38, one ends of the plate springs 38 are fixedly connected with the fixed pipes 31, when the plate springs 38 shrink, the top blocks 32 slide back into the fixed pipes 31 through the pulling force of the plate springs 38, so that the top blocks 32 are automatically reset, the side walls of the pressing blocks 34 are fixedly connected with the positioning blocks 39, and the positioning blocks 39 can be driven to move when the pressing blocks 34 move, and the positioning blocks 39 can be limited to move, and the movement of the pressing blocks 34 can be prevented from falling out of the fixed pipes 34.

As shown in fig. 4, the protection structure 4 includes a supporting plate 41, the supporting plate 41 is fixedly connected with the round tube 2, two arc holes 42 are formed in the surface of the supporting plate 41, a clamping block 43 is slidably connected to the inner wall of each arc hole 42, a mounting plate 44 is fixedly connected to the upper end of each clamping block 43, a rubber pad 45 is fixedly connected to the upper surface of each mounting plate 44, a rubber ring 46 is fixedly connected to the lower surface of each mounting plate 44, the rubber rings 46 are abutted to the surface of the supporting plate 41, two round holes 48 are formed in the surface of the supporting plate 41, the round holes 48 are communicated with the arc holes 42, a stop block 47 is fixedly connected to the lower end of each clamping block 43, the size of each stop block 47 is matched with the size of each round hole 48, the clamping blocks 43 slide into the inner wall of each arc hole 42 due to rotation of the mounting plates 44, and the stop blocks 47 can prevent the clamping blocks 43 from sliding upwards at the moment, so that the position of the mounting plates 44 can be limited.

The whole working principle is that when a material rod needs to be clamped, the mounting plate 44 is moved, the mounting plate 44 moves to drive the clamping block 43 to move, the clamping block 43 moves to drive the stop block 47 to pass through the round hole 48, when the rubber ring 46 contacts with the supporting plate 41 and then rotates the mounting plate 44, the clamping block 43 slides into the inner wall of the arc-shaped hole 42 due to the rotation of the mounting plate 44, the stop block 47 stops the upward sliding of the clamping block 43, so that the position of the mounting plate 44 is limited, when the material rod is inserted into the round tube 2, the material rod contacts with the rubber pad 45, the rubber pad 45 and the rubber ring 46 cooperate to buffer the material rod, so that the condition that the lower end of the material rod is deformed and damaged due to severe collision is avoided, then the bolt 33 is rotated, the bolt 33 drives the pressing block 34 to move downwards by virtue of threads, the pressing block 34 moves to press the top block 32, the top block 32 drives the threaded rod 35 to move, the threaded rod 35 moves to enable the adjusting block 36 to abut against the arc-shaped surface of the material rod, in the process, the adjusting block 36 can be tightly abutted against the arc surface of the material rod by virtue of the self-locking property of the screw thread, so that the material rod can be firmly clamped, in the process, the plate spring 38 is stretched when the jacking block 32 moves, the positioning block 39 is driven to move when the pressing block 34 moves, the positioning block 39 can limit the moving distance of the pressing block 34, the situation that the pressing block 34 is separated from the fixed pipe 31 is prevented, when the material rod needs to be taken down, the screw bolt 33 is rotated reversely, the pressing block 34 moves upwards, at the moment, the plate spring 38 starts to shrink, the jacking block 32 slides back into the fixed pipe 31 by virtue of the pull force of the plate spring 38, so that the jacking block 32 automatically resets, when the material rods with different diameters need to be clamped, the rotating ring 37 is rotated, the rotating ring 37 drives the threaded rod 35 to rotate, the threaded rod 35 drives the adjusting block 36 to move by virtue of the screw thread, by adjusting the position of the adjustment block 36, bars of different diameters can be clamped.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. A bar clamp comprises a base (1) and is characterized in that a round tube (2) is detachably arranged on the upper surface of the base (1), a clamping structure (3) is arranged on the arc surface of the round tube (2), the clamping structure (3) comprises four fixed tubes (31), the fixed tubes (31) are fixedly connected and communicated with the round tube (2), a top block (32) is slidably connected with the inner wall of each fixed tube (31), a bolt (33) is connected with the inner thread of each fixed tube (31), a pressing block (34) is rotatably connected with the lower end of each bolt (33), and each pressing block (34) is slidably connected with each fixed tube (31).

2. A bar clamp according to claim 1, characterized in that the top block (32) is internally threaded with a threaded rod (35), and one end of the threaded rod (35) is fixedly connected with an adjusting block (36).

3. A bar clamp according to claim 2, characterized in that the arc surface of the threaded rod (35) is fixedly connected with a swivel (37).

4. A bar clamp according to claim 1, wherein a plate spring (38) is fixedly connected to the lower surface of the top block (32), and one end of the plate spring (38) is fixedly connected to the fixing tube (31).

5. A bar clamp according to claim 1, characterized in that the side wall of the press block (34) is fixedly connected with a positioning block (39).

6. The bar clamp according to claim 1, wherein the inner wall of the round tube (2) is provided with a protection structure (4), the protection structure (4) comprises a supporting plate (41), the supporting plate (41) is fixedly connected with the round tube (2), two arc holes (42) are formed in the surface of the supporting plate (41), a clamping block (43) is slidably connected to the inner wall of the arc holes (42), the upper end of the clamping block (43) is fixedly connected with a mounting plate (44), the upper surface of the mounting plate (44) is fixedly connected with a rubber pad (45), the lower surface of the mounting plate (44) is fixedly connected with a rubber ring (46), and the rubber ring (46) abuts against the surface of the supporting plate (41).

7. A bar clamp according to claim 6, characterized in that two round holes (48) are formed in the surface of the supporting plate (41), the round holes (48) are communicated with the arc-shaped holes (42), a stop block (47) is fixedly connected to the lower end of the clamping block (43), and the size of the stop block (47) is matched with the size of the round holes (48).