TWM571787U - Torque sleeve - Google Patents

Abstract

A torsion sleeve includes a shaft with a plug tenon on one side thereof, the plug tenon including at least three end angles and at least three tenon faces, and a mandrel on the other side of the shaft, the mandrel diameter At least all grooves are opened; an inner cylinder is provided with a shaft groove for inserting the mandrel, and a friction section capable of tightening the mandrel is formed radially inside the shaft groove; a groove is provided on the outer peripheral surface of the inner cylinder, A bead hole communicating with the shaft groove is radially opened in the groove, and a bead body is sleeved in the bead hole. A tube spring is sleeved in the groove, and the tube spring is radially opened for the bead body to be sleeved. A set of holes; and an outer cylinder, one side of which has a fixing groove for the inner cylinder to be assembled, and the other side is provided with a set of non-circular cross section; when the mandrel is in the shaft When idling is formed in the groove, the end angles of the plug tenon and the tenon surfaces sequentially touch the bead, and the difference in distance between each of the end angles and each of the tenon surfaces causes a blocky feeling. And make a noise.

Description

Torque sleeve

This case relates to a torque sleeve, and more particularly to a torque sleeve that can produce a stun and squeak sound when locking a connecting member, such as a screw.

The screwdriver is mainly composed of a grip and a driving rod with a driving head. The driving head is generally divided into a flat or cross shape to match the screw head with a flat or cross groove. Lock or loosen the screws. Because the driving head of the screwdriver has a fixed shape and size, it is impossible to replace the driving head with a different shape and size.

Based on the lack of the aforementioned screwdrivers, related companies have developed hand tools with replaceable drive heads, such as wrenches. After the wrench is sleeved on a socket, the socket at the bottom of the sleeve can be used to drive with different shapes and sizes. Head to apply to various types of screws. Therefore, the sleeve is only a torque transmission tool, and it does not have a torque mechanism.

If traditional rotating tools such as screwdrivers and wrenches are used for optical devices, such as the lens adjustment of a monitor, the torque value of the rotating tool is determined by the user's force. Therefore, the torque is often too large during the adjustment process. The lens is broken, causing great losses.

To prevent the user from using a screwdriver, wrench, or other rotating tools to rotate the connector, for example, the force of the screw rotation exceeds the range that the screw can withstand, which can cause the screw to break and damage. Therefore, there are screwdrivers that use the transmission structure of springs and steel balls to limit the torque output. When the screwdriver is used, if the torque is too large, the steel balls will be separated from the spring, which will cause the screwdriver and its driving head to separate. The screwdriver and its driving head are idling, so the screwdriver can be controlled to output only a certain amount of torque to avoid damage to the connecting parts.

And this screwdriver using spring and steel ball transmission can control the quantitative torque output, but because the spring and steel ball are in point contact during slippage, it is easy to cause component deformation and damage, so the limited torque output value is quite unstable. . In addition, the aforementioned screwdriver is located in the transmission structure of the spring and the steel ball, and the size of the screwdriver cannot be effectively reduced, so that the locking operation of the precision instrument is useless and needs to be improved.

Based on the lack of the aforementioned rotating tools, such as the national patent publication No. M414299 (corresponding to the Chinese patent publication CN201998113U patent case, the U.S. patent publication US 8,549,963 patent case, the German patent publication DE 10 2012) 005885 patent case and Japanese Patent Publication No. 3174153 patent case) as an example, it is a mandrel with elasticity of a shaft rod is set in a shaft groove axially opened in an inner cylinder, The shaft groove is a stepped hole with a size slightly smaller than that of the mandrel. The flange portion protruding radially from the end of the mandrel is fastened to the corresponding fastening portion of the shaft groove. A friction section that can tighten the mandrel, so that the mandrel and the shaft groove have a preset torque value; and the other end of the shaft and the shaft hole are respectively provided with a plug joint combined with a rotating tool and a drive for driving Socket socket for head socket.

During the screwing of the torque type sleeve, the screw can be screwed in continuously when the preset torque value of the sleeve is not exceeded, and when the screw has been rotated to position and exceeds the preset torque value, the mandrel will Idling occurs in the shaft groove without over-tightening the screws. However, when the torque-type sleeve locks the screws, it will not make a sound itself to inform the user that the locked state has been reached. Therefore, how to make a sound when the torsion sleeve has a locking connection is a difficult problem for related industries.

The main purpose of this case is to provide a torque sleeve which has a preset torque value or can generate a sensation and sound when the connection is locked. One end of the torque sleeve can be sleeved for manual, pneumatic and electric output rotation. Tools, while the other end can be socketed with the drive head, and can improve the lack of conventionally used sleeves for rotating tools can only be used to socket drive heads of different shapes and sizes.

In order to achieve the foregoing object, the technical means adopted in the present case is to provide a torque sleeve, which includes a shaft, and one side is axially provided with a plug tenon. The plug tenon includes at least three end angles and two adjacent adjacent two At least three mortise faces at end angles, the distance from each end corner to a center line of the plug tenon is greater than the distance from each mortise face to the center line, and a mandrel is provided on the other side of the shaft, the center The shaft is provided with at least all grooves in a radial direction; an inner cylinder is provided with a shaft groove for inserting the mandrel, and a friction section capable of tightening the mandrel is provided radially inside the shaft groove so that the mandrel and the shaft There is a preset torque value between the grooves; a groove is provided on the outer peripheral surface of the inner cylinder, and the groove radially opens a bead hole communicating with the shaft groove, and a bead body is sleeved inside the bead hole. A tube spring is set in the groove, and the tube spring is radially opened with a set of holes smaller than the bead body and set by the bead body, so that the bead body can be kept under the elastic action of the tube spring in the bead hole. Always in contact with the plug tenon; and an outer cylinder having a fixing groove for the inner cylinder to be assembled on one side, and the other side A set of connecting grooves with a non-circular cross-section is provided; when the mandrel rotates in the shaft groove beyond the preset torque value, the mandrel will form an idle rotation in the shaft groove to make the plug connection The end angles of the tenon and the tenon surface touch the bead in sequence, and the distance between each of the end angles and each of the tenon surfaces creates a stuttering sound and sounds.

In an embodiment, the bottom of the bead hole has a chamfered edge to prevent the bead body from falling into the shaft groove.

In one embodiment, a flange portion protrudes radially from the surface of the mandrel, and a fastening portion is provided inside the shaft groove corresponding to the position of the flange portion for fastening the flange portion.

In one embodiment, a plurality of convex patterns are provided on the outer peripheral surface of the inner cylinder, and are received in the fixing groove of the outer cylinder in a tight fit manner.

In an embodiment, a receiving groove is provided between the socket groove and the fixing groove for a magnet sleeve.

In one embodiment, the mandrel is axially provided with a shaft hole communicating with the at least all grooves, and a lubricating grease is placed in the shaft hole.

In one embodiment, an opening of the shaft groove is provided with a cylinder groove communicating with the shaft groove, and the plug tenon is sleeved with a gasket to rotate the gasket in the cylinder groove.

In one embodiment, the socket of the shaft is inserted into a socket of a connecting rod at the bottom of a manual, pneumatic or electric rotary tool, and the socket is for a set of connecting rods of a driving head. Socket positioning, the free end of the driving head is a tenon with a geometric shape.

As shown in FIGS. 1 to 5, basically, the torque sleeve of the present case includes a shaft 1, an inner cylinder 2, and an outer cylinder 3.

Wherein, one side of the shaft 1 is provided with a non-circular cross-section, such as a polygonal tenon 11. The tenon 11 includes at least three end angles 111 and at least three of which are respectively connected to adjacent end angles 111. The tenon surface 112, wherein the distance from each of the end angles 111 to a center line C of the plug tenon 11 is greater than the distance from each of the tenon surface 112 to the center line C of the plug tenon 11. On the other side of the shaft 1, a mandrel 12 with a circular cross-section is extended. At least all grooves 121 are radially opened on the surface of the mandrel 12 to provide proper elasticity of the mandrel 12. A flange portion 122 is formed on the surface of the mandrel 12 in the radial direction, and a shaft hole 123 is axially opened in the center. The shaft hole 123 is communicated with the cut groove 121, and a lubricating grease can be accommodated in the lubricating oil. The cut groove 121 provides a lubrication effect.

A shaft groove 21 is provided on one side of the inner cylinder 2 for the mandrel 12 to be sleeved and has a circular cross-section. The size of the shaft groove 21 is slightly smaller than that of the mandrel 12, and the two are inserted and connected through a conventional tight fitting method. Form a shaft structure with stagnation positioning effect. Wherein, the shaft groove 21 is a round step-shaped hole, and a fastening portion 211 (shown in FIG. 5) is provided inside the shaft groove 21 at a position corresponding to the flange portion 122 of the mandrel 12. The side of the buckling portion 211 is adjacent to an annular friction segment 212. The friction segment 212 can press the surface of the mandrel 12 so that a torsional force is formed between the two, and the contact area of the friction segment 212 with the mandrel 12 To adjust the torque to a preset torque value.

The inner cylinder 2 is technically characterized in that an annular groove 22 is provided on an outer peripheral surface thereof, the groove 22 radially opens a bead hole 221 communicating with the shaft groove 21, and a bead body 23 is sleeved inside the bead hole 221. For example, steel balls. The bottom of the bead hole 221 has a chamfered edge 222 to prevent the bead body 23 from falling into the shaft groove 21 and being able to make contact with the surface of the plug tenon 11. A tube spring 24 is further sleeved in the groove 22, and the tube spring 24 has a radial size, for example, a set of holes 241 having a diameter smaller than the diameter of the bead 23 and provided for one end of the bead 23. The two ends are not joined, so the tube spring 24 can provide the elasticity of radial expansion and contraction, so that the bead body 23 can be elastically affected by the tube spring 24 in the bead hole 221, and is constantly connected with the plug tenon 11 The surface remains in contact.

In particular, a plurality of embossments 25 are provided on the outer peripheral surface of the inner cylinder 2 so as to facilitate connection with the outer cylinder 3 in a tight fit manner.

The outer cylinder 3 is provided for the installation of the inner cylinder 2 so that the plug tenon 11 and the bead 23 maintain a contact relationship. Therefore, one side of the outer cylinder 3 has a round step shape for the inner cylinder 2 to tightly fit and assemble. The grooves 31 are fixed, and the convex areas 25 are used to increase the combined area and frictional force with the grooves 31. The other side of the outer cylinder 3 is provided with a non-circular cross-section, such as a hexagonal socket 32. The socket 32 is a set of connecting rods 41 for a driving head 4 shown in FIG. For the sleeve connection and positioning, the free end of the driving head 4 may be a tongue-shaped, cross-shaped, or geometrically shaped tenon 42 when implemented, but these are all known techniques, which are not described here.

In order to make the driving head 4 have a magnetic force, an accommodation groove 33 is provided between the socket groove 32 and the fixing groove 31 for a magnet 34 to be sleeved. The driving head 4 has a magnetic force in order to attract a connection member made of a magnetically sensitive material, such as a screw.

An opening of the shaft groove 21 is provided with a circular stepped cylindrical groove 26 communicating with the shaft groove 21, and the plug tenon 11 is sleeved with a gasket 13 having the same cross section, so that the gasket 13 is in the cylinder groove. 26 to prevent foreign matter from entering the shaft groove 21 and to prevent the lubricating grease of the mandrel 12 from overflowing.

Please refer to FIGS. 1 to 5 again. When the assembly is performed, the mandrel 12 of the shaft 1 is inserted into the shaft groove 21 of the inner cylinder 2, and the flange portion 122 of the mandrel 12 is fastened to The buckling portion 211 in the shaft groove 21 forms a buckling state, so that the shaft 1 and the inner cylinder 2 are not separated axially. Next, the bead body 23 is placed in the bead hole 221, and the tube spring 24 is sleeved in the groove 22, so that the sleeve hole 241 is sleeved on the bead body 23. Then, the gasket is sleeved on the plug tenon 11, so that the shaft 1 and the inner cylinder 2 are integrated into one body. Finally, the magnet 34 is placed in the accommodation groove 33 of the outer cylinder 3, and the inner cylinder 2 is tightly fitted into the fixing groove 33 of the outer cylinder 3 to complete the torque sleeve. Assembly.

The overall appearance of the torque sleeve is shown in FIGS. 3 and 4, and FIG. 5 shows a cross-sectional view taken along line AA in FIG. 4. As can be clearly seen from the figure, the bead 23 touches the plug tenon 11 One of the tenon surfaces 112 makes the tube spring 24 in a state of energy release. As shown in FIG. 6, the bead 23 touches an end angle 111 of the plug tenon 11, so that the tube spring 24 is in an energy storage state.

As shown in FIG. 7, the plug tenon 11 of the shaft 1 is inserted into a rotary tool 5, for example, a plug slot 52 of a connecting rod 51 at the bottom of a screwdriver handle, and the socket slot of the outer cylinder 3. Thirty-two are socketed with the selected driving head 4 to form a combined type as shown in FIG. 8. Among them, the rotary tool 5 is not limited to the manual screwdriver handle shown, that is, the torque sleeve shown in this case must also be applied with a pneumatic or electric rotary tool, and it can also exert the desired locking or releasing function.

In the actual operation of this case, first align the tenon 42 of the driving head 4 with the object to be bonded, such as the connecting parts around the monitor lens, such as the groove on the head of the screw, and then turn the rotary tool 5 by hand to make the shaft 1 drives the inner cylinder 2, the outer cylinder 3, and the drive head 4 to rotate synchronously in order to perform the locking operation. During the locking process, if the preset torque value of the torque sleeve is not exceeded, the screw can be screwed in continuously, and When the screw has been rotated to the position (locking) or exceeds a preset torque value, the mandrel 12 will idle in the shaft groove 21, so that the surface of the plug tenon is adjacent to the end angles 111. And the tenon surfaces 112 sequentially touch the bead body 23, and the distance between each of the end angles 111 and each of the tenon surfaces generates a paragraph stutter and sounds to remind the user that the screws have been locked The state may have reached the preset torque value without causing the lens to be over-tightened by screws, which may cause the lens to break.

Therefore, through the implementation of this case, the added effect is that the torque sleeve can avoid improper screwing and when the torque exceeds the range that the connector can withstand, the mandrel immediately forms an idling motion in the shaft groove and simultaneously drives The end angles and the tenon surfaces of the plug dowels sequentially touch the bead to generate a sense of stagnation and sound notification to avoid unnecessary losses. In particular, the torque sleeve can be used for manual, pneumatic, and electric output rotary tools, and expands the scope of use. It is an excellent structure that has never been seen in similar products.

The one disclosed in this case is one of the preferred embodiments. For example, those who change or modify locally but derive from the technical ideas of this case and are easily inferred by those who are familiar with the technology, do not depart from the scope of patent rights in this case.

1‧‧‧ shaft

11‧‧‧Plug Tenon

111‧‧‧ end angle

112‧‧‧ Mortice

12‧‧‧ mandrel

121‧‧‧ cut groove

122‧‧‧ flange

123‧‧‧shaft hole

13‧‧‧ Gasket

2‧‧‧ inner tube

21‧‧‧ Shaft groove

211‧‧‧Mounting Department

212‧‧‧Friction section

22‧‧‧ groove

221‧‧‧ bead hole

222‧‧‧Border

23‧‧‧ Beads

24‧‧‧ tube spring

241‧‧‧set of holes

25‧‧‧ raised

26‧‧‧Cylinder trough

3‧‧‧ Outer tube

31‧‧‧Fixed slot

32‧‧‧ socket

33‧‧‧Receiving slot

34‧‧‧Magnet

4‧‧‧Driver

41‧‧‧ Set of Posts

42‧‧‧ Tongue

5‧‧‧ rotating tools

51‧‧‧ connecting rod

52‧‧‧Socket

In order to further disclose the specific technical content of this case, please first refer to the drawings, wherein: Figures 1 and 2 are exploded perspective views of the torque sleeve of the present invention from two different perspectives; 5 is a cross-sectional view taken along line AA of FIG. 4; FIG. 6 is a cross-sectional view of the torque sleeve of the present invention reaching a preset torque value; FIG. 7 is a three-dimensional exploded view of the torque sleeve, rotary tool and driving head of the present invention Figures; and Figure 8 is a perspective view of the torque sleeve, the rotating tool and the driving head of the present invention after assembly.

Claims (8)

A torsion sleeve includes: a shaft, one side of which is provided with a plug tenon, the plug tenon includes at least three end angles and at least three tenon surfaces respectively connected to adjacent two end angles, each end angle to The distance between a centerline of the plug tenon is greater than the distance from each of the tenon faces to the centerline, and a mandrel is provided on the other side of the shaft, and the mandrel opens at least all grooves in the radial direction; A shaft groove is provided for the mandrel to be inserted, and a friction segment capable of tightening the mandrel is provided radially inside the shaft groove, so that a preset torque value is provided between the mandrel and the shaft groove; A groove is provided on the outer peripheral surface of the cylinder. The groove is radially opened with a bead hole communicating with the shaft groove. A bead body is sleeved in the bead hole. The groove is further sleeved with a tube spring. Opening a set of holes smaller in size than the bead body for the bead body to enable the bead body to be constantly in contact with the plug tenon under the elastic action of the tube spring within the bead hole; and an outer One side of the cylinder is provided with a fixing groove for assembling the inner cylinder, and the other side is provided with a set of receiving grooves with a non-circular cross section. When the mandrel rotates in the shaft groove beyond the preset torque value, the mandrel will form idle rotation in the shaft groove, so that the end angles of the plug tenon and the tenon surfaces sequentially touch The bead body, with the difference in the distance between each of the end angles and each of the tenon surfaces, generates a blocky feeling and emits a sound. The torque sleeve according to item 1 of the scope of patent application, wherein the bottom of the bead hole has a chamfered edge to prevent the bead from falling into the shaft groove. The torque sleeve according to item 1 of the scope of patent application, wherein a flange portion is protruded radially from the surface of the mandrel, and a buckle is provided inside the shaft groove corresponding to the flange portion. unit. The torque sleeve according to item 1 of the scope of patent application, wherein the outer surface of the inner cylinder is provided with a plurality of convex patterns, and is connected to the fixing groove of the outer cylinder in a tight fit manner. The torque sleeve according to item 1 of the scope of patent application, wherein a receiving groove is provided between the socket groove and the fixing groove for a magnet sleeve. The torque sleeve according to item 1 of the scope of patent application, wherein the mandrel is axially provided with a shaft hole communicating with the at least all grooves, and a lubricating grease is placed in the shaft hole. The torque sleeve according to item 1 of the scope of patent application, wherein the opening of the shaft groove is provided with a cylinder groove communicating with the shaft groove, and the plug tenon is sleeved with a gasket, so that the gasket is in the Rotate in the drum. The torque sleeve according to item 1 of the scope of patent application, wherein the socket of the shaft is inserted into a socket of a connecting rod at the bottom of a manual, pneumatic or electric rotary tool, and the socket is A set of posts for a driving head is sleeved and positioned. The free end of the driving head is a tenon with a geometric shape.