Clamping structure capable of being quickly inserted into working head

Abstract

The utility model discloses a clamping structure capable of being quickly inserted into a working head, which comprises a main shaft, the working head, a lock sleeve, an elastic piece and a locking piece, and the main shaft is internally provided with an accommodating cavity for accommodating the working head; the lock sleeve is sleeved outside the main shaft; the elastic piece is arranged between the lock sleeve and the main shaft; a containing groove used for containing the locking piece is formed in the side wall of the main shaft, and the containing groove allows the locking piece to swing within a certain angle range. A groove for accommodating the locking piece is formed in the working head; when the working head is in a locking state, one end of the locking piece is inserted into the groove, and the other end of the locking piece is limited by the lock sleeve under the action of the elastic piece; when the working head is installed, the locking piece swings to a certain inclined angle in the containing groove, and when the working head is detached, the locking piece is disengaged from the groove and moves towards the direction of the lock sleeve. According to the clamping structure capable of being rapidly inserted into the working head, the locking piece is a long and thin piece, the corresponding groove length and groove width can be smaller, and the influence on the strength of the main shaft is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamping structure that can be quickly inserted into a working head. Background Art

[0002] The traditional clamping structure has a clamping spindle with a chamber for accommodating a working head and a groove for accommodating a locking member. The clamping spindle is provided with an axially movable locking sleeve and an elastic member that can apply elastic force to the locking sleeve. When installing and removing the working head, both the locking sleeve and the working head need to be operated at the same time, which is inconvenient to use. For example, the invention patent with patent number CN102107287B discloses a chuck for accommodating and clamping an externally inserted tool head, including a spindle, a locking member, a sleeve, an elastic component and a pop-up device. The spindle is used to accommodate an externally inserted tool head. The spindle is provided with a long groove that radially passes through the spindle. The locking member is accommodated in the long groove and can move axially and radially along the spindle. The sleeve is arranged on the outside of the spindle and can move axially relative to the spindle. The elastic component is arranged between the spindle and the sleeve to provide axial elastic force to the locking member and the sleeve. The pop-up device is installed in the spindle to provide axial elastic force to the tool head.

[0003] With existing quick-insert mechanisms, when installing a working head, the working head is inserted with one hand. After the working head pushes the locking member a certain distance, the locking member can deviate from the insertion direction of the working head, allowing the working head to continue to be inserted into the working position. A disadvantage of existing quick-insert mechanisms is that they typically use a steel ball as the locking member, and its size must be larger than the wall thickness formed by the outer wall and the inner cavity of the main shaft to achieve a locking effect. Therefore, the length and width of the groove on the main shaft to accommodate the locking member must be larger than this wall thickness. The larger the groove size, the greater the impact on the strength of the main shaft. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a clamping structure that can be quickly inserted into the working head, wherein the locking member is a slender member, and the corresponding slot length and slot width can be made smaller, thereby reducing the impact on the spindle strength.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a clamping structure that can be quickly inserted into a working head, comprising a main shaft, a working head, a locking sleeve, an elastic member and a locking member, the main shaft is provided with a accommodating cavity for accommodating the working head; the locking sleeve is arranged on the outside of the main shaft; the elastic member is arranged between the locking sleeve and the main shaft; the side wall of the main shaft is provided with a accommodating groove for accommodating the locking member, and the accommodating groove allows the locking member to swing within a certain angle range; the working head is provided with a groove for receiving the end of the locking member; when the working head is in a locked state, one end of the locking member is inserted into the groove, and the other end of the locking member is limited by the locking sleeve under the action of the elastic member; when the working head is installed, the locking member swings in the accommodating groove to a certain tilt angle; when the working head is disassembled, the locking member falls out of the groove.

[0006] Furthermore, the accommodating groove includes a retaining wall and an upper swinging groove at the front side, and a flange and a lower swinging groove at the rear side.

[0007] Furthermore, the upper swing groove and the lower swing groove are both inclined at a certain angle to the main shaft; the upper swing groove and the lower swing groove are used to limit the swing angle of the locking member.

[0008] Furthermore, when the working head is in a locked state, the two sides of the locking member are respectively restricted by the retaining wall and the flange; when the working head is installed, the locking member swings in the accommodating groove, and the swing angle is limited by the upper swing groove and the lower swing groove; when the working head is disassembled, the locking sleeve is pushed to the left, and the locking member moves toward the locking sleeve until the locking member disengages from the groove.

[0009] Furthermore, the inner wall of the locking sleeve is provided with a limiting step for limiting the locking member; one side of the limiting step is an elastic member, and the other side of the limiting step is a locking inner wall, a slope and an unlocking inner wall in sequence.

[0010] Furthermore, the inner diameter of the locking inner wall is smaller than the inner diameter of the unlocking inner wall, and the inclined surface is connected between the locking inner wall and the unlocking inner wall.

[0011] Furthermore, the locking member is an elongated member with sloped surfaces at both ends, including but not limited to oblique surfaces and spherical surfaces. The sloped surfaces can cause the locking member to move non-parallel to the direction of the force when subjected to a force in a certain direction. For example, when the working head is being installed, the sloped surface of the locking member near the working head can cause the locking member to swing at a certain angle when subjected to force from the working head. When the working head is being removed, the sloped surface of the locking member near the working head can cause the locking member to displace toward the locking sleeve when subjected to force from the working head.

[0012] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention provides a clamping structure that can quickly insert a working head, which has a clamping spindle, and the spindle has a receiving cavity for accommodating the working head and a receiving groove for accommodating a locking piece, and the receiving groove allows the locking piece to swing within a certain range; since the locking piece used is a slender piece, the size of the corresponding receiving groove can be made smaller, thereby minimizing the impact on the strength of the spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of the clamping structure provided by the utility model;

[0014] Figure 2 A schematic diagram of the partial structure of the clamping structure provided by the utility model;

[0015] Figure 3 This is a schematic diagram of the insertion process of the working head in the clamping structure provided by the utility model;

[0016] Figure 4 This is a schematic diagram of the process of pulling out the working head in the clamping structure provided by the utility model.

[0017] In the figure: 1. working head; 2. elastic part; 3. locking sleeve; 4. locking part; 5. main shaft; 6. locking inner wall; 7. inclined surface; 8. unlocking inner wall; 9. flange; 10. lower swing groove; 11. retaining wall; 12. upper swing groove; 13. groove; 14. limiting step; 15. accommodating groove; 16. accommodating cavity; 17. slope. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The descriptive terms of positional relationships such as "upper", "lower", "left", "right", "front", and "back" described in this embodiment are all based on the positions in the drawings.

[0019] Example

[0020] like Figure 1 and 2As shown, a clamping structure that can be quickly inserted into a working head includes a main shaft 5, a working head 1, a locking sleeve 3, an elastic member 2 and a locking member 4, and the main shaft 5 is provided with a accommodating cavity 16 for accommodating the working head 1; the locking sleeve 3 is sleeved on the outside of the main shaft 5; the elastic member 2 is arranged between the locking sleeve 3 and the main shaft 5; a accommodating groove 15 for accommodating the locking member 4 is provided on the side wall of the main shaft 5, and the accommodating groove 15 allows the locking member 4 to swing within a certain angle range; the working head 1 is provided with a groove 13 for receiving the end of the locking member 4; when the working head 1 is in a locked state, one end of the locking member 4 is inserted into the groove 13, and the other end of the locking member 4 is limited by the locking sleeve 3 under the action of the elastic member 2; when the working head 1 is installed, the locking member 4 swings in the accommodating groove 15 to a certain angle of inclination; when the working head 1 is disassembled, the locking member 4 falls out of the groove 13.

[0021] In one embodiment, the receiving groove 15 includes a retaining wall 11 and an upper swinging groove 12 on the front side, and a flange 9 and a lower swinging groove 10 on the rear side. The retaining wall 11 is located below the upper swinging groove 12, and the flange 9 is located above the lower swinging groove 10. The upper swinging groove 12 and the lower swinging groove 10 are respectively arranged on both sides of the receiving groove 15, and are both inclined at a certain angle to the main shaft 5. When the working head 1 is in a locked state, the two sides of the locking member 4 are respectively restricted by the retaining wall 11 and the flange 9; when the working head 1 is installed, the locking member 4 swings in the receiving groove 15, and the swing angle is limited by the upper swinging groove 12 and the lower swinging groove 10; when the working head 1 is disassembled, the locking sleeve 3 is as shown in FIG. Figure 4 When the locking element 4 is moved to the left as shown, it moves toward the locking sleeve 3 and disengages the groove 13. The inner wall of the locking sleeve 3 is provided with a limiting step 14 for restraining the locking element 4. On one side of the limiting step 14 is the elastic member 2, and on the other side are the locking inner wall 6, the inclined surface 7, and the unlocking inner wall 8. The inner diameter of the locking inner wall 6 is smaller than that of the unlocking inner wall 8, and the inclined surface 7 connects the locking inner wall 6 and the unlocking inner wall 8.

[0022] The locking member 4 is a slender member with slopes at both ends, and the slopes 17 include but are not limited to inclined surfaces and spherical surfaces. The slopes 17 can cause the locking member 4 to move non-parallel to the direction of force application after being subjected to a force in a certain direction. For example, when the working head 1 is installed, the slope 17 on the locking member 4 close to the working head 1 is subjected to a force from the working head 1, which can cause the locking member 4 to swing at a certain angle; when the working head 1 is disassembled, the slope 17 on the locking member 4 close to the working head 1 is subjected to a force from the working head 1, which can cause the locking member 4 to move toward the locking sleeve 3. Compared with the steel ball in the existing quick-insert structure, using a slender member as the locking member 4 can make the size of the corresponding receiving groove 15 smaller, thereby minimizing the impact on the strength of the main shaft 5.

[0023] The working mode of the clamping structure provided in this embodiment is as follows:

[0024] like Figure 3 As shown, when the working head 1 is inserted, the end of the working head 1 pushes the slope 17 at the lower end of the locking member 4. The locking member 4 swings around the flange 9 as a fulcrum, constrained by the locking inner wall 6 of the locking sleeve 3, the stopper 14, the upper swing groove 12, the lower swing groove 10 in the receiving groove 15, and the flange 9. During this process, the locking member 4 overcomes the elastic force applied to the locking sleeve 3, the elastic member 2 is compressed, and the locking sleeve 3 is pushed to the left. When the locking member 4 swings a certain angle, the working head 1 can be smoothly inserted into the working position. The locking sleeve 3, under the action of the elastic force, pushes the locking member 4 back to its original position, thus locking the working head 1.

[0025] During normal operation, if the working head 1 moves outward, due to the restrictions of the retaining wall 11 and the flange 9 in the accommodating groove 15, one end of the locking member 4 rests on the locking inner wall 6 of the locking sleeve 3, and the other end rests in the groove 13 of the working head 1. The working head 1 is restricted by the locking member 4 and cannot move outward.

[0026] When disassembling the working head 1, it is necessary to turn the locking sleeve 3 (such as Figure 4 The working head 1 is then pulled outward. At this time, the slope 17 on the locking member 4 near one end of the working head 1 is pressed against by the working head 1. The locking member 4, restricted by the retaining wall 11 and the flange 9, moves toward the unlocking inner wall 8 under the push of the working head 1. Since the inner diameter of the unlocking inner wall 8 is larger than the inner diameter of the locking inner wall 6, a cavity is formed between the unlocking inner wall 8 and the spindle 5. When the locking member 4 moves a certain distance and enters the cavity, the locking member 4 is released from the groove 13 of the working head 1. The working head 1 is no longer restricted by the locking member 4 and can be pulled out smoothly. After the working head 1 is released, under the action of the elastic member 2, the inclined surface 7 of the locking sleeve 3 presses against the slope 17 on the locking member 4 near the locking sleeve 3. The locking member 4, restricted by the retaining wall 11 and the flange 9, moves toward the accommodating cavity 16 and resets, waiting for the next installation of the working head.

[0027] The above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention, and the scope of patent protection of the present invention shall be defined by the claims.

Claims

1. A clamping structure capable of quickly inserting a working head, comprising a spindle, a working head, a locking sleeve, an elastic member, and a locking member, wherein the spindle is provided with a receiving cavity for accommodating the working head; the locking sleeve is disposed on the outside of the spindle; and the elastic member is disposed between the locking sleeve and the spindle; characterized in that: A receiving groove for accommodating the locking member is provided on the side wall of the main shaft, and the receiving groove allows the locking member to swing within a certain angle range; a groove for receiving the end of the locking member is provided on the working head; when the working head is in a locked state, one end of the locking member is inserted into the groove, and the other end of the locking member is limited by the locking sleeve under the action of the elastic member; when the working head is installed, the locking member swings in the receiving groove to a certain tilt angle; when the working head is disassembled, the locking member falls out of the groove.

2. A clamping structure capable of quickly inserting a working head according to claim 1, characterized in that: The accommodating groove includes a retaining wall and an upper swing groove at the front side, and a flange and a lower swing groove at the rear side.

3. A clamping structure capable of quickly inserting a working head according to claim 2, characterized in that: The upper swing groove and the lower swing groove are both inclined at a certain angle to the main shaft; the upper swing groove and the lower swing groove are used to limit the swing angle of the locking member.

4. The clamping structure capable of quickly inserting a working head according to claim 2, characterized in that: When the working head is in a locked state, the two sides of the locking member are respectively restricted by the retaining wall and the flange; when the working head is installed, the locking member swings in the accommodating groove, and the swing angle is limited by the upper swing groove and the lower swing groove; when the working head is disassembled, the locking sleeve is pushed to the left, and the locking member moves toward the locking sleeve until the locking member is out of the groove.

5. The clamping structure capable of quickly inserting a working head according to claim 1, characterized in that: The inner wall of the lock sleeve is provided with a limiting step for limiting the locking member; one side of the limiting step is an elastic member, and the other side of the limiting step is a locking inner wall, a slope and an unlocking inner wall in sequence.

6. The clamping structure capable of quickly inserting a working head according to claim 5, characterized in that: The inner diameter of the locking inner wall is smaller than the inner diameter of the unlocking inner wall, and the inclined surface is connected between the locking inner wall and the unlocking inner wall.

7. The clamping structure capable of quickly inserting a working head according to claim 1, characterized in that: The locking member is a slender member with sloped surfaces at both ends, and the sloped surfaces include but are not limited to inclined surfaces and spherical surfaces.

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