TWI579078B - Limiting sleeve structure - Google Patents

Description

Limit sleeve structure

The present invention relates to a component for a power tool, and more particularly to a limit sleeve structure.

Electric drill is a commonly used tool for drilling, screwing and screwing in the machinery industry, construction industry and decoration industry. Its working end is equipped with different sizes or types of drill bits or screwdriver heads according to user requirements to improve work. effectiveness.

Among them, in order to cope with the ever-increasing advancement of related technologies and the demand of users, the drill bit or the screwdriver head with deep limit function has been developed to effectively control the depth of work. In addition, there is also a drill bit or screwdriver. A bit or a screwdriver head structure that is idling when the pressure is too high.

As shown in FIG. 1 to FIG. 3 , the conventional limit sleeve structure includes a sleeve 10 , and a receiving passage 11 is formed therein. The receiving passage 11 is respectively formed at the two ends of the sleeve 10 . The opening 12 and the second opening 13 define a ring groove 14 in the receiving passage 11; a limiting cover 20 has a limiting end 21 at one end and a fixed end 22 at the other end, and the fixed end 22 is formed with a card a ring rib 23, the limiting cover 20 is disposed on the sleeve 10 with the fixed end 22; a bit holder 30 having a joint portion 31 at one end of the bit holder 30, and the other end of the bit holder 30 Opening a socket 32 for coupling a drill bit; a card member 40, one end of the card member 40 is formed with a driving shaft 41, the driving shaft 41 is an outer hexagonal head, and the other end is formed with an insertion hole 42 inwardly, and the coupling portion 31 is inserted into the insertion hole In the hole 42 , the clamping member 40 is disposed in the receiving passage 11 of the sleeve 10 , and the driving shaft 41 is coupled to an electric drill, and the clamping member 40 is respectively looped at the periphery of the two ends. A first fixing groove 43 and a second fixing groove 44 are formed, and the first fastening groove 43 is sleeved on the first fixing groove 43 , and a second buckle 46 is sleeved on the second fixing groove. 44, and the first buckle 45 abuts and blocks the first opening 12 of the sleeve 10, and the second buckle 46 abuts and blocks the locking ring rib 23 of the limiting cover 20. A plurality of circular holes 47 are defined in the clamping member 40. Each of the circular holes 47 communicates with the insertion hole 42 and respectively accommodates a steel ball 48.

The limit limiting sleeve 20 limits the working depth of the drill bit during drilling, and since the steel ball 48 is received in the circular hole 47 of the clamping member 40, when the drill bit is received When the thrust is large, the clamping member 40 also moves toward the drilling direction, and the steel ball 48 also moves toward the drilling direction until the circular hole 47 faces the annular groove 14, and the portion of the steel ball 48 Then, the drill holder 30 loses the abutment of the steel ball 48, so that the drill holder 30 cannot rotate synchronously with the clamping member 40, thereby achieving the pressure of the drill bit or the screwdriver being excessively pressurized. The purpose of time and space.

It can be seen from the foregoing that although the conventional limit sleeve structure has the functions of depth limitation and allowing the drill bit to idling when the pressure is too large, the structure is complicated, the number of components is too large, and the assembly is not easy, and the like is required. Sleeve structure.

The invention provides a limit sleeve structure, the main purpose of which is to provide a limit sleeve structure which is simple in structure and easy to combine.

Another object is to provide a limit sleeve structure having a working depth for controlling the drilling and preventing the working plane from being worn.

In order to achieve the above objective, the limiting sleeve structure of the present invention comprises: a sleeve having a main body portion, one end of the main body portion is formed with a through portion, the sleeve is provided with a perforation, and the perforation is Through the body portion and the through portion; a drill tail clamp, the drill tail clamp is disposed in the through hole of the sleeve, and one end of the drill tail clamp is a joint portion, and the joint portion is provided for In combination with an electric drill, the other end of the drill tail clamp is an intervening portion, and the clamping portion has a clamping hole for clamping a drill tail; a limit cover, the limit The position cover is sleeved on the through portion of the sleeve, and the limit cover has a slip surface, the slip surface is provided with a stop groove, the limit cover is used for limiting; The sliding member is disposed in the sliding slot of the limiting cover.

It can be seen from the foregoing that the limiting sleeve structure of the present invention prevents the drill tail from continuously advancing toward the drilling direction by abutting the limiting cover against the working plane, so as to achieve the purpose of controlling the depth of the drilling work, and making the limit a sleeve is disposed on the through portion of the sleeve, so that the sleeve is rotated relative to the limiting cover, and the sliding member is disposed in the sliding slot of the limiting cover, so that the sliding member is When the working plane is in contact, the material of the sliding member can be prevented from slipping, so that the limiting cover stops rotating, thereby achieving the effect of preventing the wear working plane, and the structure is simple to provide a simple combination. The purpose of the limit sleeve structure.

"Knowledge Technology"

10‧‧‧ sleeve

11‧‧‧ accommodating channel

12‧‧‧ first opening

13‧‧‧second opening

14‧‧‧ Ring groove

20‧‧‧Limited cover

21‧‧‧Limited end

22‧‧‧ fixed end

23‧‧‧Card ring ribs

30‧‧‧Drill holder

31‧‧‧Combination

32‧‧‧ Sockets

40‧‧‧Card parts

41‧‧‧ drive shaft

42‧‧‧ inserted holes

43‧‧‧First fixed slot

44‧‧‧Second fixing slot

45‧‧‧First buckle

46‧‧‧second buckle

47‧‧‧ round hole

48‧‧‧ steel balls

49‧‧‧ Third buckle

"this invention"

50‧‧‧ sleeve

51‧‧‧ Main body

52‧‧‧ Department of Wear

53‧‧‧First wear surface

54‧‧‧Perforation

55‧‧‧through hole

56‧‧‧Flexible gap

57‧‧‧Lock hole

58‧‧‧Connected parts

60‧‧‧Drilling clip holder

61‧‧‧Combination Department

62‧‧‧Clamping Department

63‧‧‧Clamping holes

64‧‧‧Silver lock hole

65‧‧‧ Screw locks

66‧‧‧Scale

70‧‧‧Limited cover

71‧‧‧Second running surface

72‧‧‧Slip surface

73‧‧‧Sliding slot

80‧‧‧Slips

90‧‧‧buffer

A‧‧‧Drill tail

Figure 1 is a perspective view of a conventional limit sleeve structure.

Figure 2 is an exploded view of a conventional limit sleeve structure.

Figure 3 is a cross-sectional view of a conventional limit sleeve structure.

Figure 4 is a perspective view of the limit sleeve structure of the present invention.

Figure 5 is an exploded view of the limit sleeve structure of the present invention.

Figure 6 is a cross-sectional view showing the structure of the limit sleeve of the present invention.

Figure 7 is a cross-sectional view showing another angle of the limit sleeve structure of the present invention.

To enable your review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [detailed description of the drawings] as follows: The limit sleeve structure of the present invention is shown in Figures 4-7. The sleeve 50 includes a main body portion 51. One end of the main body portion 51 is formed with a through portion 52. The sleeve 50 has a connection between the main body portion 51 and the through portion 52. A first lap surface 53 , the sleeve 50 defines a through hole 54 . The through hole 54 extends through the main body portion 51 and the through portion 52 . The sleeve 50 defines a through hole 55 in the main body portion 51 . The 55-series is in communication with the through-hole 54; a drill-clip holder 60 is disposed in the through-hole 54 of the sleeve 50, and one end of the drill-clip holder 60 is a joint portion 61. The joint portion 61 is coupled to an electric drill. The drill tail clamp 60 is driven by the electric drill. The other end of the drill tail clamp 60 is an intervening portion 62. The clamping portion 62 has a clamping hole. 63. The clamping hole 63 is configured to sandwich a drill tail A. The drill tail clamp 60 defines a screw locking hole 64. The clamping hole 63 communicates with the screw locking hole 64. The screw lock is connected. The 64 is aligned with the through hole 55 of the sleeve 50, and further includes a screw member 65. The screw member 65 is locked in the screw hole 64 through the through hole 55 of the sleeve 50. The screw lock member 65 extends into the one end of the clamping hole, so that the drill tail clamp 60 and the drill tail A are fixedly coupled. In the preferred embodiment of the present invention, the drill tail clamp The seat 60 has a scale 66 for allowing the user to conveniently observe the relative position between the tail clamp 60 and the sleeve 50; a limiting cover 70, the limiting cover 70 is sleeved on the wearing portion 52 of the sleeve 50, and the limiting cover 70 is tightly engaged with the wearing portion 52, thereby generating a friction force to make the limit The cover 70 is rotated synchronously with the sleeve 50. The limit cover 70 has a second wear surface 71 and a stop surface 72. The second wear surface 71 faces the sleeve 50, and the slip surface 72 is Opening a stop slot 73, the limit cover 70 is used for limiting, and the stop surface 72 of the limit cover 70 is pressed against the working plane to prevent the drill tail A from continuously moving toward the drilling direction; An anti-slip member 80 is disposed in the sliding member slot 73 of the limiting cover 70. The anti-slip member 80 is configured to abut the sliding surface 72 of the limiting cover 70. In the working plane, the limiting cover 70 is not rotated along with the sleeve 50. Preferably, the sliding member 80 is a rubber ring.

Preferably, the buffer sheet 90 is sleeved on the through portion 52 of the sleeve 50. The buffer sheet 90 is located on the main body portion 51 of the sleeve 50 and the limiting cover. Between 70, the buffer sheet 90 is used to prevent the first wear 53 surface and the second wear surface 71 from directly rubbing to cause abrasion.

Preferably, the sleeve 50 has a telescopic slot 56 and a locking hole 57 in the main body portion 51. The locking hole 57 communicates with the telescopic slot 56, and further includes a coupling member 58. The sleeve 50 is fixedly coupled to the drill collar 60 by the coupling member 58 and provides a locking buffer space by the expansion slit 56.

When the limit sleeve structure of the present invention is in operation, since the drill tail clamp 60 is driven by the electric drill, when the electric drill is rotated in operation, the drill tail clamp 60 also rotates, and the drill tail clamp The 60 is disposed in the sleeve 50, and the limiting cover 70 is sleeved on the through portion 52 of the sleeve 50, and the limiting cover 70 is tightly engaged with the wearing portion 52. The 80 series is disposed on the sliding block groove 73 of the limiting cover 70, and the sleeve 50, the limiting cover 70 and the stopping member 80 are synchronously rotated; When the sliding surface 72 of the limiting cover 70 abuts against a working plane, the sliding member 80 disposed in the sliding member groove 73 is in contact with the working plane, and the stopping member 80 is stopped. The sliding property is such that the frictional force between the sliding member 80 and the working plane is greater than the friction between the limiting cover 70 and the wearing portion 52, so that the limiting cover 70 does not rotate with the sleeve 50. Therefore, the sliding member 80 and the limiting cover 70 are not rotated relative to the working plane, so that the sliding surface 72 of the limiting cover 70 does not continuously rub against the working plane, thereby achieving effective control work. The depth and the purpose of stopping the rotation of the limit cover 70 to protect the work plane.

It can be seen from the foregoing that the limiting sleeve structure of the present invention prevents the drill tail A from continuously advancing toward the drilling direction by abutting the limiting cover 70 against the working plane, so as to achieve the purpose of controlling the working depth of the drilling hole, and The limiting cover 70 is sleeved on the through portion 52 of the sleeve 50 to rotate the sleeve 50 relative to the limiting cover 70, and the sliding member 80 is disposed on the sliding member of the limiting cover 70. In the groove 73, when the sliding member 80 is in contact with the working plane, the material of the sliding member 80 can be prevented from slipping, and the limiting cover 70 can be stopped to achieve the effect of preventing the wear working plane. And by the foregoing structure, the object of providing a limit sleeve structure with simple structure and easy combination is achieved.

50‧‧‧ sleeve

51‧‧‧ Main body

52‧‧‧ Department of Wear

53‧‧‧First wear surface

54‧‧‧Perforation

55‧‧‧through hole

56‧‧‧Flexible gap

57‧‧‧Lock hole

58‧‧‧Connected parts

60‧‧‧Drilling clip holder

61‧‧‧Combination Department

62‧‧‧Clamping Department

63‧‧‧Clamping holes

64‧‧‧Silver lock hole

65‧‧‧ Screw locks

66‧‧‧Scale

70‧‧‧Limited cover

71‧‧‧Second running surface

72‧‧‧Slip surface

73‧‧‧Sliding slot

80‧‧‧Slips

90‧‧‧buffer

A‧‧‧Drill tail

Claims (7)

A limit sleeve structure includes: a sleeve having a main body portion, one end of the main body portion is formed with a through portion, the sleeve is provided with a through hole, and the through hole is penetrated through the main body portion and the a piercing clip, the drill tail clip is disposed in the through hole of the sleeve, and one end of the drill tail clamp is a joint portion, and the joint portion is provided for being combined with an electric drill. The other end of the drill tail clamp is an intervening portion, and the clamping portion has a clamping hole for clamping a drill tail; a limiting cover, the limiting cover is sleeved on the a sealing portion of the sleeve, the limiting cover has a sliding surface, the sliding surface is provided with a sliding slot, the limiting cover is used for limiting; and a sliding member is used for stopping the sliding The component is disposed in the slider slot of the limiting cover. The limit sleeve structure of claim 1, wherein the sleeve has a telescopic slot and a locking hole in the main body portion, the locking hole is connected to the telescopic slot, and further comprises a combination The coupling member is disposed through the locking hole, and the sleeve is fixedly coupled to the drill tail clamp by the coupling member. The limit sleeve structure of claim 1, wherein the drill tail clamp has a scale. The limit sleeve structure of claim 1, wherein the sleeve has a first wear surface connecting the main body portion and the through portion, and the limit cover has a second wear surface. The second wear surface faces the sleeve. The limit sleeve structure of claim 4, further comprising a buffer sheet, the buffer sheet is sleeved on the through portion of the sleeve, and the buffer sheet is located at the sleeve Main body And between the limiting cover, the buffer sheet is configured to prevent the first wear surface and the second wear surface from directly rubbing to cause abrasion. The limit sleeve structure according to claim 1, wherein the slip preventing member is a rubber ring. The limit sleeve structure of claim 1, wherein the sleeve defines a through hole in the main body, the through hole is in communication with the through hole, and the drill tail holder defines a screw hole. The clamping hole is in communication with the screw hole, and further comprises a screw locking member, wherein the screw locking member is locked in the screw locking hole through the through hole of the sleeve.