TWM600678U - Torque fixing extension rod structure - Google Patents

Abstract

This creation is to provide a fixed torque extension rod structure. This creation is based on a body, a stud, a magnetic element, an outer covering body, a baffle, an elastic body, an upper fixed torsion element, and a bottom fixed The torsion element and a transmission element are formed relative to each other; thereby, this creation uses the upper cog of the upper fixed torsion element and the lower cog of the lower fixed torsion element as the connecting (driving) and disengaging (idling) elements, thus simplifying the setting The relative torsion structure greatly reduces the manufacturing cost, and because this creation only needs a single body to accommodate the rest of the components, the components and assembly procedures can be simplified, and the torque setting value is more accurate, thereby achieving convenience in use The practical progress.

Description

Fixed torque connecting rod structure

This creation is about a fixed-torque connecting rod structure, especially related to an adapter rod of a pulling tool, more specifically, it refers to an innovative structural designer of an adapter rod of a pulling tool with a set torque value.

A general pulling tool uses its tool head to be sleeved on an object to be pulled to tighten or loosen the object. However, because modern assembly components require more precision, there is a certain torque value specification when assembling. In view of this, some wrenching tools will be equipped with a device that can set the torque value. However, due to the type and There are many sizes, and if every type of pulling tool needs to be purchased with a set torque value, the user's purchase cost will be greatly increased. In addition, when the object to be pulled is in a position where the pulling tool cannot be directly connected to the socket, an extension rod or sleeve is generally used to extend the connection. Therefore, related manufacturers currently also adopt a type with a settable torque value directly installed on the adapter rod or sleeve to simultaneously solve the problem of reducing the purchase cost and extending the connection. For example, the torque sleeves disclosed in my country Patent Publication Nos. M325896 and M370464 are adapter sleeves with a setable torque value. However, the conventional structures disclosed above all use ratchet teeth or jumping teeth as the torque value. The setting element, that is, when the applied force is greater than the set torque value, the ratchet teeth or the jumping teeth will be separated from each other and run idly. However, the structure of ratchet or jumping teeth is more complicated, which will increase the manufacturing cost. The structure disclosed in the M370464 case must be connected to each other by two sets of sleeves. Not only the excessive components are expensive, but also The assembly is also more complicated, which easily leads to inaccurate torque setting.

In view of the above phenomenon, the creator of this case is based on years of production experience, and then creates a progressive and practical creator.

That is, the main purpose of this creation is to provide a fixed torque extension rod structure; the problem to be solved is that when the force applied to the conventional structure is greater than the set torque value, the ratchet or skipping teeth will show mutual The state of leaving and idling. However, the structure of ratchet or jumping teeth is more complicated, which will increase the manufacturing cost. The structure disclosed in the M370464 case must be connected to each other by two sets of sleeves. Not only the excessive components are expensive, but also The assembly is also more complicated, which can easily lead to the inaccurate setting of the torque value. The problem can be improved and breakthrough;

The technical feature to solve the problem mainly includes a body with a non-circular groove inside, the top of the non-circular groove is opened with a driving end, the bottom end of the non-circular groove is provided with an internal screw hole, the inner The bottom end of the screw hole is provided with an elastic space, and the bottom end of the elastic space is provided with an accommodating space that is open to the bottom end, wherein the outer edge of the body is provided with a connecting section at a relative position corresponding to the accommodating space, and the connecting section faces upward A stop end is formed relative to the predetermined section position of the main body, a through hole is transversely penetrated at the predetermined position of the outer edge of the connecting section, and a plurality of pin holes are radially penetrated through the proximal end of the connecting section, wherein the inner part of the through hole is inserted A limit cross bar is set and fixed, the limit cross bar spans the inside of the accommodating space of the body, and the plurality of pin holes are respectively fixedly provided with a limit pin; a stud, the stud guide The screw is assembled in the inner screw hole of the main body; a magnetic member, the magnetic member is arranged in the non-circular groove of the main body, and the bottom end of the magnetic member is attracted to the relative position of the stud; The outer covering sleeve body has a set of covering space formed inside, and the covering space covers the connecting section of the main body, and the free end of the outer covering sleeve is stopped at the stop end of the main body. The bottom end of the outer covering body is provided with a shrinkage-limiting hole; a baffle, the baffle is arranged inside the elastic space of the main body, and is arranged at the relative position of the inner screw hole; an elastic body, the elastic body includes a A first end and a second end, wherein the elastic system is accommodated in the elastic space of the body, and the first end is stopped at the stopper of the body; an upper constant torsion element, Set in the accommodating space of the main body, the top of the upper constant torsion element is provided with a transverse blocking section groove, and the top of the blocking section groove is opened with an open notch, so that the blocking section groove can pass through the open groove The opening is used for the limiting cross-bar as a limiting embedding, and the top end of the upper fixed torsion element is in a state of urging against the second end of the elastic body, and the bottom end of the upper fixed torsion element is formed circumferentially There is an upper cog; a lower fixed torsion element is arranged at a relative position at the bottom of the upper fixed torsion element, the top surface of the lower fixed torsion element is provided with a lower cog, and the lower cog fits into the upper of the upper fixed torsion element A cog, and a polygonal slot hole is formed in the center of the lower constant torque element; a transmission element is arranged in the accommodating space of the body, the transmission element includes a transmission body, the top of the transmission body is provided with a polygonal convex post, the The polygonal convex column is matched and assembled with the polygonal slot of the lower fixed torsion element, so that the transmission element and the lower fixed torsion element are in a state of mutual motion structure, and the predetermined section of the transmission body is provided with a limit ring groove, The limit ring groove and the limit pins of the body are in a ring-turn loose fit and axial limit configuration, so that the transmission element can only rotate but cannot perform axial displacement movement, and the bottom end of the transmission element A hexagonal transmission column extends in the axial direction, the transmission body and the hexagonal transmission column are just limited and blocked by the shrinkage limiting hole of the outer covering body;

In this way, this creation uses the upper cogs of the upper constant torsion element and the lower cogs of the lower constant torsion element as the connecting (driving) and disengaging (idling) elements, so the relative structure of the constant torque can be simplified, and the manufacturing cost can be greatly reduced. And because this creation only needs a single body to accommodate the rest of the components, the components and assembly procedures can be simplified, the torque setting value is more accurate, and the convenience and practicality of use can be achieved.

[This creation part]

1: Constant torque extension rod

10: body

101: link segment

102: limit end

11: Non-circular groove

12: Drive end

13: Internal screw hole

14: Flexible space

15: Housing space

16: pin hole

17: Limit pin

18: Through hole

19: limit bar

20: Stud

21: drive slot

30: Magnetic parts

40: outer cover

41: Covering Space

42: shrinkage limit

50: baffle

60: elastomer

61: first end

62: second end

70: fixed torque element

71: Card stop section slot

72: open notch

73: Upper Cog

74: Lower fixed torque element

75: lower cog

76: Polygonal slot

80: Transmission element

81: Transmission body

82: Limit ring groove

83: Polygonal convex column

84: Hexagonal drive column

Figure 1: It is a three-dimensional view of the fixed torque extension rod structure of this creation.

Figure 2: An exploded perspective view of the fixed-torque extension rod structure of this creation.

Figure 3: A combined cross-sectional view of the fixed-torque connecting rod structure of this creation.

Please refer to Figures 1 to 3, which are the preferred embodiments of the fixed-torque extension rod structure of this invention. However, these embodiments are for illustrative purposes only and are not restricted by this structure in the patent application; including:

A body 10 is provided with a non-circular groove 11 inside, the top of the non-circular groove 11 is opened with a drive end 12, the bottom end of the non-circular groove 11 is provided with an inner screw hole 13, and the bottom end of the inner screw hole 13 An elastic space 14 is provided. The bottom end of the elastic space 14 is provided with an accommodating space 15 that is open to the bottom end. The outer edge of the body 10 corresponds to the accommodating space 15 and a connecting section 101 is provided at a relative position. A stop end 102 is formed at a predetermined section position of 101 facing upwards relative to the main body 10, a through hole 18 is formed transversely at a predetermined position on the outer edge of the connecting section 101, and a plurality of pin holes are formed radially through the proximal end of the connecting section 101 16. A limit cross bar 19 is inserted and fixed inside the through hole 18, and the limit cross bar 19 spans the accommodating space 15 of the body 10, and the plurality of pin holes 16 are respectively fixed inside There is a limit pin 17;

A stud 20, which is assembled in the inner screw hole 13 of the body 10 by a guide screw;

A magnetic member 30, the magnetic member 30 is arranged in the non-circular groove 11 of the main body 10, and the bottom end of the magnetic member 30 is adsorbed to the relative position of the stud 20;

An outer covering body 40 with a covering space 41 formed inside, covering the connecting section 101 of the main body 10, and restricting the free end of the outer covering body 40 to the main body In the limiting end 102 of 10, a shrinkage limiting hole 42 is provided at the bottom end of the outer covering body 40;

A baffle 50, the baffle 50 is arranged inside the elastic space 14 of the main body 10, and is arranged at the relative position of the inner screw hole 13;

An elastic body 60 including a first end 61 and a second end 62, wherein the elastic body 60 is accommodated in the elastic space 14 of the main body 10 and makes the first end 61 blocking limit is located at the blocking piece 50 of the main body 10;

An upper fixed torsion element 70 is arranged in the accommodating space 15 of the main body 10, the top of the upper fixed torsion element 70 is provided with a transverse blocking section 71, and the top of the blocking section 71 is opened with an open notch 72. Make the blocking cut groove 71 through the open notch 72 for the limit cross bar 19 to limit and embed, and the top end of the upper fixed torsion element 70 is connected to the second end of the elastic body 60 62 are in a state of pressing against each other, and an upper cog 73 is formed around the bottom end of the upper constant torsion element 70;

The lower fixed torsion element 74 is arranged at a relative position at the bottom of the upper fixed torsion element 70. The top surface of the lower fixed torsion element 74 is provided with a lower cog 75 which fits into the upper fixed torsion element 70. The upper cog 73 is provided with a polygonal slot 76 through the center of the lower constant torque element 74;

A transmission element 80 is provided in the accommodating space 15 of the main body 10. The transmission element 80 includes a transmission body 81. The top of the transmission body 81 is provided with a polygonal convex column 83, which corresponds to the fixed torque The polygonal slot 76 of the element 74 is assembled to match each other, so that the transmission element 80 and the fixed torque element 74 are in a co-moving structure state, and the predetermined section of the transmission body 81 is provided with a limiting ring groove 82, the limiting The positioning ring groove 82 and each of the limiting pins 17 of the body 10 are in a ring-rotating loose fit and axial limiting configuration, so that the transmission element 80 can only rotate but cannot perform axial displacement movement. In addition, a hexagonal transmission column 84 extends axially at the bottom end of the transmission element 80, and the transmission body 81 and the hexagonal transmission column 84 are limited and blocked by the shrinkage limiting hole 42 of the outer covering body 40.

When the author wants to adjust the constant torque value of the constant torque extension rod 1, it is necessary to remove the magnetic member 30 first, and then use a hand tool to drive the drive groove 21 of the stud 20 to make the stud 20 Displacement up and down. If the stud 20 is displaced downward, the stud 20 is forced downward against the blocking piece 50, and the blocking piece 50 downwardly compresses the first end 61 of the elastic body 60 to compress the elasticity Body 60, the second end 62 of the elastic body 60 is opposed to the upper fixed torsion element 70, so that the upper cog 73 of the upper fixed torsion element 70 engages the lower fixed torsion element 74 downward Cogs 75. When the stud 20 is driven down to compress the elastic body 60, the transmission element 80 is pressed by the elastic body 60 to a greater pressure, so that the cogs 73 on the upper fixed torsion element 70 The static friction force generated between the cog 75 and the lower fixed torque element 74 is relatively large. Therefore, a large torque value must be input to cause the idling between the transmission element 80 and the body 10. When the stud 20 is driven to When the elastic body 60 is loosened up and then, the transmission element 80 is pressed by the elastic body 60 with less pressure, so that the upper cog 73 of the upper fixed torsion element 70 and the lower cog 75 of the lower fixed torsion element 74 The static friction force generated therebetween is relatively small, so only a small torque value input is needed to cause idling between the transmission element 80 and the main body 10.

As a result, since the present creation uses the upper cog 73 of the upper constant torque element 70 and the lower cog 75 of the lower constant torque element 74 as elements for connecting (driving) and disengaging (idling), the relative structure of the constant torque can be simplified, so that The manufacturing cost is greatly reduced, and because this creation only needs a single body 10 to accommodate the rest of the components, the components and assembly procedures can be simplified, and the torque setting value is more accurate, which can achieve convenience and practical progress By.

1: Constant torque extension rod

10: body

101: link segment

102: limit end

11: Non-circular groove

12: Drive end

13: Internal screw hole

14: Flexible space

15: Housing space

16: pin hole

17: positioning pin

18: Through hole

19: limit bar

20: Stud

21: drive slot

30: Magnetic parts

40: outer cover

41: Covering Space

50: baffle

60: elastomer

61: first end

62: second end

70: fixed torque element

71: Card stop section slot

72: open notch

73: Upper Cog

74: Lower fixed torque element

75: lower cog

76: Polygonal slot

80: Transmission element

81: Transmission body

82: Limit ring groove

83: Polygonal convex column

84: Hexagonal drive column

Claims (1)

A fixed torque connecting rod structure, including: A body is provided with a non-circular groove inside, the top of the non-circular groove is opened with a drive end, the bottom end of the non-circular groove is provided with an inner screw hole, and the bottom end of the inner screw hole is provided with an elastic space. The bottom end of the space is provided with an accommodating space that is open to the bottom end, wherein the outer edge of the body is provided with a connecting section at a relative position corresponding to the accommodating space, and the connecting section faces upward to form a limiting end relative to the predetermined section of the body , A predetermined position of the outer edge of the connecting section is transversely provided with a through hole, and the proximal end of the connecting section is radially provided with a plurality of pin holes, wherein a limit cross bar is inserted and fixed inside the through hole. The cross bar spans the inside of the accommodating space of the main body, and a limit pin is fixedly fixed inside the plurality of pin holes; A stud, the stud is a guide screw assembled in the inner screw hole of the body; A magnetic member, the magnetic member is arranged in the non-circular groove of the main body, and the bottom end of the magnetic member is adsorbed to the relative position of the stud; An outer covering body with a covering space formed inside, covering the connecting section of the main body, and restricting the free end of the outer covering body to the limiting end of the main body, A shrinkage limiting hole is provided at the bottom end of the outer covering body; A baffle, the baffle is arranged inside the elastic space of the main body, and is arranged at the relative position of the inner screw hole; An elastic body comprising a first end and a second end, wherein the elastic system is accommodated in the elastic space of the main body, and the first end is stopped at the main body Baffle An upper constant torsion element is arranged in the accommodating space of the main body, the top of the upper constant torsion element is provided with a transverse blocking section groove, and the top of the blocking section groove is opened with an open notch to make the blocking section Through the open slot, the limit cross bar is used for limit embedding, and the top end of the fixed torsion element is connected to the elastic The second ends of the sexual body are in a state of pressing against each other, and an upper cog is formed around the bottom end of the upper constant torsion element; The lower fixed torsion element is arranged at a relative position at the bottom of the upper fixed torsion element, the top surface of the lower fixed torsion element is provided with a lower cog, and the lower cog is fitted into the upper cog of the upper fixed torsion element. There is a polygonal slot hole through the center of the lower fixed torsion element; A transmission element is arranged in the accommodating space of the body, the transmission element includes a transmission body, the top of the transmission body is provided with a polygonal convex post, and the polygonal convex post matches the polygonal slot of the lower torque element Assemble so that the transmission element and the lower fixed torque element are in a state of co-moving structure, and the predetermined section of the transmission body is provided with a limit ring groove, and the limit ring groove is exactly opposite to each of the limit pins of the body. It has a ring-to-loose fit and an axial limit configuration, so that the transmission element can only rotate but cannot make axial displacement movement, and the bottom end of the transmission element axially extends a hexagonal transmission column, the transmission body and the hexagonal transmission column The position-limiting card is blocked in the shrinkage-limiting hole of the outer covering body.

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