TWI220121B - Constant-torque socket - Google Patents

Abstract

Disclosed is a constant-torque socket, including: a lining sheath, a ratchet gear, a spring, and a nut. The lining sheath defines an inner hole providing with ratcheting teeth. The ratchet gear is accommodated in the inner hole. A connecting hole is formed in the ratchet gear for connecting to a torque tool. One end of the ratchet gear is provided with another ratcheting teeth. The ratcheting teeth of ratchet gear are meshed with the ratcheting teeth of the lining sheath. One end of the spring urges against the ratchet gear. The nut is threaded to the lining sheath. An opposite end of the spring urges against the nut. The engaging amount of the nut with the lining sheath effects compression of the spring to induce a compression force that pre-sets the amount of torque. According to the mechanism of this invention, a nut, a spring and a ratchet gear are additionally installed in the lining sheath, such that not only the correct data for the applying force may be controlled, but the force may also be totally controlled when installing screws during the online mass fitting. Furthermore, the data for quality control may be precisely controlled in the production line and the occurrences of unknown situation may be reduced.

Description

1220121 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a fixed torque sleeve, in particular, it is used between a torque tool (such as a wrench or a pneumatic gun) and a fixed object (such as a nut or screw). A kind of interface and bridge, a fixed torque sleeve that can achieve torque control and predictive effect in use. [Previous technology] Traditional torque tools are broadly divided into two categories: one is traditional and the other is electronic. There are significant gaps in price and range of use, and market demand is also different. In the market, the sleeve usually only has the ease of use as the main function guide, and does not have the function of force range or torque control. The most direct function of the sleeve in the working environment is an interface and bridge between a torque tool (such as a wrench or a pneumatic gun) and a fixed object (such as a nut or screw). Moreover, the control and maintenance of power during use is completely determined by the operator. How to collect the safety data of each product on the assembly line is a difficult point. The use of electronic torque tools (such as electronic wrenches) can only measure the data of the force applied each time, and cannot control the magnitude of the force or maintain the range of the force. The function of the traditional sleeve is mainly used with a torque tool to directly lock or loosen the screw (nut), but the strength of the locking screw (nut) depends on the operator's feeling. It is often too tight or insufficient, causing the screw (nut) to be damaged or loosened. As shown in the first figure, the conventional sleeve 50 does not have any functional design at all. According to different sizes of locking screws, a variety of sleeves of different sizes are manufactured, which also have the functions of locking and loosening the screws.

122〇121 V. Description of the Invention The reason is that the inventor felt that the above-mentioned defects could be improved, and he devoted himself to the application of scientific theory and finally proposed a present invention with reasonable design and effective improvement of the 14 defects. [Summary of the Invention] The main object of the present invention is to provide a fixed torque sleeve, which can achieve the effects of torque control and prediction in use. In order to achieve the above-mentioned object, the present invention provides a fixed-torque sleeve removal tool 2: a bushing having an inner hole, and an end of the inner hole is provided with a ring of ratchets: two ratchet gears, which are accommodated in the Inside the hole, the inside of the ratchet gear forms a circular wire that can be used to engage the connection hole of the torque tool. 'The ratchet gear is provided with another ㈣.' The ratchet gear of the ratchet gear meshes with the ratchet teeth of the bushing; and a steep element 'One end is pressed against the ratchet gear; and a nut is screwed to the approximate sleeve, and the other end of the elastic element is pressed against the nut. The nut can be used to lock the depth of the approximate sleeve, and the elastic element is compressed. The elastic element is deformed to generate pressure, which reaches a range of a preset torque. In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and accompanying drawings of the present invention, but the drawings are provided for reference and explanation only, and are not intended to limit the present invention. [Embodiment] Referring to the second, third, and fourth drawings in June, the present invention provides a fixed torque sleeve 'including a bushing 10, a ratchet gear 20, a spring 30, and a nut 4. Wherein, the bushing 10 is a hollow body, and a set of holes 1 1 is formed at one end thereof, and the outer end of the set of holes 11 is formed into an opening shape. The set of holes 11 can be used to socket fixed objects (nuts or screws). . Within the bush 1 〇

1220121 V. Description of the invention (3) The part has an inner hole 1 2, the outer end of the inner hole 12 is formed in an open shape, and an end of the inner hole 12 is provided with a ring of ratchet teeth 13 (as shown in the fifth figure). One side of the tooth system is the first beveled side 1 3 1, and the other side is the second beveled side 1 3 2, forming two oblique teeth with different inclination to facilitate locking and loosening; of course, the ratchet gear 1 3 tooth shape also Can be a beveled side, a right-angled side. The ratchet gear 20 is housed in the inner hole 12. The ratchet gear 20 is formed with a connection hole 2 1 (as shown in the sixth figure). The connection hole 21 can be used to engage a torque tool. One end of the ratchet gear 20 is provided with a ring of ratchet teeth 22 (such as the sixth and sixth figures A). The ratchet tooth 22 has a first beveled edge 221 on one side and a second beveled edge 222 on one side. The helical teeth with different inclination are easy to lock and relax; of course, the ratchet 22 tooth shape can also be a beveled edge and a right-angled edge, so that the locking direction is helical and the relaxation direction is straight (such as Figure 7). When the two sets of ratchet teeth 1 3 and 22 mesh with each other and lock the screw, a trip mechanism and action occur. When the screws are loosened, the screws are surely loosened. The spring 30 is a compression spring. Of course, the spring 30 can also be another elastic element, which is accommodated inside the inner hole 12 and is sleeved outside the ratchet gear 20. The spring 30 —The end system abuts against the ratchet gear 20, which provides the escape space when the ratchet teeth 1 3, 2 2 jump off, and provides the force to press back the bite after the jump is completed. The position where the spring 30 is set is not limited, and it can also be set at other positions that can produce the same abutment function. The nut 40 is a hollow body. The outer wall is provided with an external thread 4 1, and a corresponding internal thread 1 4 is provided near the outer end of the inner wall of the inner hole 12. The nut 40 is an external thread 4. 1 screwed to the internal thread 1 4 to make the nut 4 0

1220121 V. Description of the invention (4) It can be screwed into the inner hole 12 of the bushing 10, and the other end of the spring 30 is pressed against the nut 40. The nut 40 can be used to lock the depth of the bushing 10, and the compression spring 30 deforms the spring 30 to generate pressure to achieve the preset torque. The main function of the nut 40 is twofold: one is to fix the whole Group of parts, one for setting torque. After the adjustment of the nut 40 is completed, it can be fixed by welding or another fixing member, or it can be left unfixed, so that the nut 40 can still be adjusted at any time. When the ratchet teeth 22 of the ratchet gear 20 and the ratchet teeth 13 of the bush 10 are joined to form a ratchet group, the meshing surface also reaches a path of transmitting power to each other. Adding a spring 3 0 and a nut 40 can complete the use mechanism of a certain torque sleeve. 'Bushing 1 0 end of the sleeve 1 1 can be fixed to different sizes of reeds (in the screw), ratchet gear 2 The connection hole 21 of 0 is also manufactured in the size and shape to be engaged with the torque tool. The spring 30 functions to hold the ratchet gear 20 and mesh with the bushing 10 'and provides a space for the ratchet gear 20 and the bushing 10 to escape when the working torque exceeds a set torque. When the torque tool tightens the screw (nut), when the applied force exceeds the set torque, the ratchet teeth 1 3, 2 2 jump to the next tooth along the first bevel edge, and 2 2 work, and To achieve the function of idling. When the torque tool loosens the screw (nut), because the force applied is greater than the tightening torque, the ratchet gear 2 0 and the bushing 10 are designed to engage the second beveled edge with a different inclination 1 2 3 2 2 2 2 In order to prevent the jump, to achieve the purpose of loosening the screw (nut). The main claim function of the present invention is: when tightening the screw (nut), when the force exceeds the preset torque of the sleeve, the sleeve of the present invention can produce the effect of idling, making the sleeve unable to continue to tighten the screw (Nut) to prevent the sleeve from exerting force

Page 8 1220121 V. Description of Invention (5) Excessive. When loosening the screw (nut), you can loosen the screw (nut) directly and surely like a traditional sleeve. "The use of the fixed torque sleeve of the present invention is not limited in whether it needs to be equipped with an electronic torque tool (such as an electronic wrench) to achieve the torque control and predictable effects. The joining and fixing of each part on the assembly production line, All rely on screws and nuts, especially in the machinery manufacturing industry. These include the working machinery industry, the automotive industry, the electronic equipment industry, the food equipment industry, and so on. 'Every industry with screws and nuts can be used. This invention combines Nuts 40, springs 30, ratchet gears 20, and ratcheting bushes 10, etc. When the above parts are combined into a finished product, a preset maximum torque resistance is applied. For locking screws (nuts ), The operator can apply a larger torque to the torque tool. After the larger torque is transmitted and converted by the sleeve of the present invention, the best torque of the locking screw (nut) can be output (that is, the sleeve's pre- It is designed to withstand maximum torque), and the locking screw (nut) is not tightened or loosened too much. When loosening the screw (nut), it can be directly and surely loosened like a traditional sleeve Screws (nuts). In summary, the present invention is a rare new invention product, which is extremely industrially usable, novel, and dreamlike, and fully meets the requirements for invention patent applications. To apply, please check and grant the patent in this case to protect the rights of the inventor. However, the above are only the preferred and feasible embodiments of the present invention. The equivalent technical changes made by the specification and the drawings within the valley are similarly included in the scope of the present invention and are shared by Chen Ming.

1220121 Schematic illustration [Schematic description] The first diagram is a perspective view of a conventional sleeve. The second figure is a sectional view of the present invention. The third figure is a left side view of the present invention. The fourth figure is a right side view of the present invention. The fifth figure is a perspective view of the bushing of the present invention. The sixth figure is a perspective view of the ratchet gear of the present invention. The sixth diagram A is a detailed diagram of part A of the sixth diagram. The seventh diagram is a schematic diagram of the ratchet gear tooth profile of the present invention. [Representative symbols of components] [Invention] 10 Bush 1 2 Inner hole 1 3 1 First beveled edge 14 Internal thread 2 2 Ratchet 2 2 2 Second beveled edge 11 Set of holes 13 Ratchet 1 3 2 Second Beveled edge 2 0 Ratchet gear 2 1 Socket 2 2 1 First beveled edge 3 0 Spring 4 0 Nut 4 1 External thread [Knowledge]

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Claims (1)

1220121 VI. Scope of patent application 1. A fixed torque sleeve, comprising: a bushing having an inner hole, the end face of the inner hole is provided with a ring of ratchet teeth; a ratchet gear received in the inner hole, the A ratchet gear is formed inside the ratchet gear to engage a torque tool. One end of the ratchet gear is provided with another ring of ratchet teeth. The ratchet teeth of the ratchet gear are engaged with the ratchet teeth of the bushing. Against the ratchet gear; and a nut, which is screwed to the bushing, the other end of the elastic element and against the nut, the nut can be used to lock the depth of the bushing, and the elastic element is compressed to deform the elastic element. Generate pressure to reach the preset torque. 2. The fixed torque sleeve according to item 1 of the scope of patent application, wherein a set of holes is formed at one end of the bushing. 3. The fixed torque sleeve according to item 1 of the scope of patent application, wherein one side of the sleeve and the ratchet tooth profile of the ratchet gear is a first beveled edge, one side is a second beveled edge, and the two bevels Corner edges have different slopes. 4. The fixed torque sleeve according to item 1 of the scope of the patent application, wherein the ratchet tooth profile of the bushing and the ratchet gear has a beveled edge on one side and a right-angled edge on the other. 5. The constant-torque sleeve according to item 1 of the scope of patent application, wherein the elastic element is a spring. 6. The fixed torque sleeve described in item 1 of the scope of patent application, wherein the outer wall of the nut is provided with external threads, and the inner wall of the inner hole of the bushing is provided with corresponding internal threads near the outer end. The external thread is screwed to the internal thread of the bushing. 0 7. The fixed torque sleeve as described in item 1 of the patent application scope, where Page 12 1220121 VI. Scope of patent application The nut can be adjusted after being locked into the bushing to reach the preset torque. 8. The fixed torque sleeve as described in item 1 of the scope of patent application, wherein the nut is locked into the bushing and fixed after the preset torque is reached. Page 13