CN201147915Y - Torque type rotary tool - Google Patents

Abstract

The utility model relates to a torsion type rotary tool, which is formed by combining a rod-shaped handle, an elastic element, a driven sleeve and a driving rod; when the tool head at the bottom of the driving rod locks a connecting element, if the force applied by the tool head exceeds a preset torsion value, the handle and the driven sleeve idle relative to the driving rod, and the positioning pin protruding radially from the driving rod is enabled to be separated from the bottom edge of the driven sleeve and is concavely provided with a notch, so that the driven sleeve is axially moved upwards and an elastic element is compressed, and the loss caused by the fact that the torsion exceeds the bearing range of a locked object due to improper locking is avoided.

Description

Torque Rotary Tool

technical field

The utility model relates to a rotary tool, especially a torsion-type rotary tool. When locking a connecting element, if the torque value exceeds the preset torque value of the rotary tool, it will form idling, so as to avoid the connection between the connecting element and the Damage to the lock.

Background technique

Commonly used rotary tools, such as screwdrivers or wrenches, are mainly used to lock a connecting element, such as a screw, to two objects to be locked, so that the two objects can be combined into one. Take the screw as an example, because it can be used repeatedly after being screwed together, and has the functions of firm combination, load bearing, and convenient construction assembly and disassembly, so it is widely used by people.

The structure of the screw is roughly divided into a shaft and a head. The circumference of the shaft is threaded to increase the bonding fastness with the object when screwing, while the head has a larger cross-section, which is designed to be fitted by a rotating tool. For exertion. There are also some changes in the part of the head for the rotary tool to be embedded. In addition to the well-known one-word or cross grooves, there is still a central part with a concave hole, and the embodiment of the concave hole can be a triangle. , square, hexagonal, or equiangular polygonal section, or the outer part of the head is hexagonal columnar. When operating, a screwdriver or wrench corresponding to the cross-section shape and size is inserted into the groove or the hole groove, and the force is applied by rotation.

In fact, the torque of a traditional screwdriver or wrench is determined by the force applied by the user. Therefore, taking a wrench as an example, if it is used for optical devices, such as the lens adjustment of a monitor, the torque value cannot be fixed. , so that during the adjustment process, the lens is often locked or broken due to excessive torque, resulting in great losses.

In order to prevent the user from using a screwdriver or wrench to tighten the screw, the force used exceeds the range that the screw can withstand, which will cause the screw to collapse. At present, there is a transmission structure that uses a spring and a steel ball to limit the torque output. Screwdriver, when the screwdriver is used, if the torque is too large, the steel ball will be separated from the spring, which will cause the screwdriver to separate from its driving head, so that the screwdriver and the driving head can form idling, so the screwdriver can only be controlled to output a certain amount Torque to avoid being damaged by the lock.

However, the screwdriver driven by the spring and the steel ball can control the output of the torque at a certain amount, but since the spring and the steel ball are in point contact when they slip off, it is easy to cause deformation and damage to the components, so that the limited torque output value is equivalent. unstable. In addition, it is inferior to the above-mentioned transmission structure of the spring and the steel ball, and cannot effectively reduce the size of the screwdriver, so that it is useless for locking precision instruments, and needs to be improved urgently.

Utility model content

In view of this, the applicant of the present utility model has been engaged in the design, production and sales of rotating shafts for many years, and has devoted himself to research, hoping to combine the sleeve-type, radial friction-type rotating shaft with a rotating tool, such as a wrench or a screwdriver, so that it has The advantages of a default value of torque output, and the disadvantages of no deformation and damage of springs and steel ball elements, after repeated experiments and tests, the torsion rotary tool of the present utility model has been developed.

In order to achieve the above-mentioned purpose, the technical means adopted by the utility model is to provide a torsion type rotary tool, which includes: a rod-shaped handle, a protruding part is arranged on the top, and the bottom is axially driven by a socket-type rotating shaft structure. The top of the rod is combined so that there is a preset torque value output between the two, and at least one pin hole is radially opened under the protrusion; an elastic element is sleeved on the handle, and the two ends respectively resist the protrusion and the handle. Driven sleeve; a driven sleeve, which is sleeved under the handle, has a long guide groove on the outer wall corresponding to the pin hole, and at least one pin passes through the guide groove and is inserted into the corresponding pin hole, and the slave At least one notch is recessed at the bottom edge of the moving sleeve; a driving rod, the top of which is sleeved on the handle and covered by the driven sleeve, and a tool head is arranged axially at the bottom, and the driving rod radially protrudes at least A positioning pin, which is accommodated in the corresponding gap; by rotating the handle, the driven sleeve and the driving rod rotate synchronously. When the applied force of the tool head exceeds the preset torque value, the handle and the driven sleeve The idling is formed relative to the drive rod, and the positioning pin is forced to break away from the gap, and the driven sleeve shaft is moved up and the elastic element is compressed. Wherein, a rod hole is opened in the radial direction of the protruding part, and a handle passes through the rod hole, and the handle is vertically located above the handle. The top of the rod hole is axially connected with a through hole, and an urging member is combined with the through hole, and the bottom end of the urging member is fixed against the handle. The tool head is inserted into the axially opened insertion hole at the bottom of the drive rod, the insertion hole is provided with at least one connected connecting hole in the radial direction, and the connecting hole is used for a positioning pin to be combined, so that the inner end of the positioning pin is against the tool head, The outer end is exposed to the connection hole so as to be accommodated in the corresponding notch of the driving rod. The tool head is a straight, cross-shaped, geometrically shaped tenon, or a sleeve with a geometrically shaped internal embedding hole. The notch is in an inverted V shape, has a rib in the axial direction, and has a hypotenuse extending downward and rightward from the top. The sleeve-type rotating shaft structure is located at the junction of the handle and the driving rod, and includes a shaft hole and a shaft column, wherein the shaft hole is a step-shaped hole, a friction section protrudes radially, and has a concave and the surface of the shaft has at least a cut groove in the axial direction, and a flange protrudes radially, which is fastened to the buckle, and the shaft is fastened by the friction section and the shaft hole . The shaft column axially has a column groove communicating with the cutting groove, and lubricating oil is placed in it. There are two pin holes, which are arranged up and down, and a pin is embedded respectively. The upper pin is against the top edge of the guide groove, while the lower pin has a distance from the bottom edge of the guide groove, and the distance is equal to that of the driven sleeve. The height of the notch at the bottom edge of the barrel, and there are two notches, which are relatively located at the bottom edge of the driven sleeve, and accommodate the positioning pins that protrude radially relative to the drive rod.

The purpose of the utility model and the enhanced effects are that the handle and the drive rod are socketed in the form of a rotating shaft, so that the two can form a default value of torque output, and the socket of the handle and the drive rod is formed by a slave Covered by the moving sleeve, the setting of the driven sleeve and the limit mechanism of the handle and the elastic element can allow the tool head at the bottom of the drive rod to lock a connecting element, such as a screw, on the two objects to be locked, so that When locking and exceeding the preset torque value, the handle and the driven sleeve form idle rotation relative to the drive rod, and further limit the longitudinal displacement of the driven sleeve to remind the operator, so that improper locking can be avoided. , The loss caused by making the torque exceed the range that the locked object can bear.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the torsion rotary tool of the present invention.

Fig. 2 is a perspective view of the utility model after assembly.

FIG. 3 is a cross-sectional view taken along line A-A in FIG. 2 .

Fig. 4 is a partially enlarged cross-sectional view of the shaft hole of the handle of the present invention and the shaft post of the drive rod socketed.

Fig. 5 is a schematic diagram of the idle rotation of the torsion rotary tool of the present invention.

Detailed ways

In order to further disclose the specific technical content of the present utility model, first please refer to the accompanying drawings, wherein, Fig. 1 is a three-dimensional exploded view of the torsion type rotary tool of the present utility model, Fig. 2 is a perspective view of the utility model after assembly, and Fig. 3 is a diagram The sectional view taken along the line A-A in 2, and Fig. 4 is a partial enlarged sectional view after the shaft hole of the handle of the utility model is socketed with the shaft column of the drive rod.

As shown in FIGS. 1 to 4 , basically, the torque type rotary tool of the present invention is composed of a handle 1 , an elastic element 2 , a driven sleeve 3 , and a driving rod 4 .

Wherein, the handle 1 is a rod body, and its upper end has a protruding part 11, and the bottom edge of the protruding part 11 forms a step-shaped drop with the rod body, which is used as the abutment of one end of the elastic element 2 described later, and the protruding part 11 can be used directly for In order to increase the friction between the operator's fingers and fingers, the surface of the protruding part 11 can be provided with a plurality of parallel ribs or grooves arranged in a ring, or even embossed. It is a well-known technique and will not be described in detail here.

In order to improve the operation and force application of the handle 1, the protruding portion 11 radially defines a rod hole 12 for a rotary handle 5 to pass through, so that the rotary handle 5 is vertically located above the handle 1, and by rotating the rotary handle 5, The handle 1 can be rotated synchronously with the driven sleeve 3 and the driving rod 4 described later. In response to the operating space when rotating, the knob 5 can move laterally in the rod hole 12, and then a tightening member 51, such as a set screw, is combined with the axially connected through hole 13 above the rod hole 12 to make the tightening The bottom end of the piece 51 is fixed against the knob 5, thereby enlarging the operating space of the rotary tool of this case.

The joint part of the handle 1 and the driving rod 4 has a socket-type rotating shaft structure, which is formed by socketing a shaft hole and a shaft column. Referring to Fig. 4, the lower end of the handle 1 is axially provided with a shaft hole 14 whose size corresponds to the shaft column 41 of the drive rod 4 described later, and the two are embedded through a well-known tight fit method to form a shaft structure (hub device). The shaft hole 14 is a multi-step hole, and the position and size of the flange part 412 corresponding to the shaft column 41 are recessed with a buckle part 141. When assembled, the flange part 412 is buckled and accommodated in the buckle. In the connecting portion 141 , after the shaft post 41 is socketed with the shaft hole 14 , a buckled state is formed without axial separation. Furthermore, a friction section 142 protrudes inside the shaft hole 14, which can press against the surface of the shaft column 41 to form a desired torsion force, and the contact area between the friction section 142 and the shaft column 41 is determined by The torque can be adjusted to a default value, and when the preset torque value of the rotary tool is exceeded, the handle 1 and the driven sleeve 3 will form idle rotation relative to the driving rod 4 .

The elastic element 2 is installed between the handle 1 and the driven sleeve 3. When it is implemented, it is better to use a spring. The spring is inserted from the bottom of the handle 1 so that one end of it is against the protrusion 11, and the other is The end is against the top of the driven sleeve 3, exerting an axial elastic force on the driven sleeve 3, and when the driven sleeve 3 forms idle rotation, it will compress the elastic element during the upward movement. 2.

The driven sleeve 3 is a hollow cylinder whose inner diameter corresponds to the inner diameter of the handle 1, so as to be sleeved on the lower section of the handle 1, and make its top adjacent to the lower end of the elastic element 2, so that the driven sleeve 3 can be synchronized It rotates with the handle 1 and limits the stroke of the longitudinal displacement. Therefore, an elongated guide groove 31 is formed longitudinally on its outer wall, preferably a pair of guide grooves 31 are relatively formed, so that the driven sleeve 3 is sleeved on the handle 1 In the lower section, the pair of guide grooves 31 is aligned with at least one pin hole 15 preset in the lower section of the handle 1, and then the latch 32 passes through the guide groove 31 and the pin hole 15 respectively, so that the driven sleeve 3 is connected under the handle 1 , so as not to disengage axially, and the upper pin 32 is against the top of the guide groove 31, while the lower pin 32 has a predetermined distance from the bottom end of the guide groove 31, so that when the driven sleeve 3 is idling, the upper Move limit.

In particular, the bottom end of the driven sleeve 3 is provided with at least one inverted V-shaped notch 33, preferably a pair of notches 33 opposite each other, and each notch 33 has a rib 331 in the axial direction, the top of which extends downward to the right A beveled edge 332 makes the height of the notch approximately equal to the distance from the lower pin 32 to the bottom of the guide groove 31 .

The outer diameter of the driving rod 4 is preferably equal to that of the handle 1 , and a shaft 41 extends axially from its upper end, which is sleeved in the shaft hole 14 and covered by the driven sleeve 3 . The surface of the shaft 41 is provided with at least a groove 411 in the axial direction to provide proper elasticity of the shaft 41 . In addition, a flange portion 412 is provided on the surface of the shaft column 41, and a column groove 413 is formed axially in the center, which communicates with the cut grooves 411, and can accommodate lubricating oil inside, so that it can pass through the cut grooves 411, And form a lubricating effect. The bottom of the driving rod 4 is provided with an insertion hole 42 in the axial direction, which is used for the insertion of a tool head 43, and in order to increase the combination of the two, the insertion hole 42 is radially provided with a connecting hole 421, preferably opposite A pair of connecting holes 421 are provided for respectively combining with a positioning pin 422 , such as a set screw, so that the inner end is against the tool head 43 and exposed to the connecting holes 421 to be accommodated in the corresponding notch 33 . Wherein, the tool head 43 is to expand the scope of use, and it can be a straight, cross-shaped, geometrically shaped tenon, or even a sleeve with a geometrically shaped internal embedding hole.

Therefore, through the foregoing description of each component and its assembled form, its assembled three-dimensional appearance is shown in Figure 2, and Figure 3 is a cross-sectional view taken along line A-A in Figure 2, which shows that the utility model The relevant configuration of the components of the torque type rotary tool, and Fig. 4 is a partial enlarged cross-sectional view after the handle 1 and the driving rod 4 are further buckled through the shaft structure formed by the shaft hole 14 and the shaft post 41 .

As shown in Figure 2, when the utility model is actually operated, first the tool head 43 of the rotary tool, such as a hexagonal cylinder, is aligned with the connecting element of the object to be locked, such as the groove corresponding to the shape of the screw head, and then Turn the handle 5 counterclockwise with your fingers to rotate with a preset torque value. When the locking process does not exceed the preset torque value, the screw can be locked continuously, and when the screw has been rotated When the position is reached and the preset torque value is exceeded, the drive rod 4 is in a fixed state, so that the handle 1 and the driven sleeve 3 form idle rotation, and the radially protruding positioning pin 422 of the drive rod 4, as shown in Figure 5 As shown in the schematic diagram of the idle rotation of the utility model torque type rotary tool, it moves along the bevel 332 to the bottom edge of the driven sleeve 3, so that the driven sleeve 3 moves upward axially, except for compressing the elastic element 2 Besides, let the bottom end of the guide groove 31 touch the lower pin 32 until each notch 33 rotates and falls into another positioning pin 422 at the opposite end, the elastic element 2 is stretched immediately.

Conversely, if the screw is to be unscrewed, the rotary tool is rotated in a clockwise direction, so that the handle 1 drives the driven sleeve 3 and the driving rod 4 to rotate according to the preset torque value, and the ribs 331 of each notch 33 resist the positioning The pin 422 also rotates synchronously to unscrew the screw.

Therefore, through the implementation of the present utility model, the rotating tool does not separate axially through the fastening effect between the shaft column and the shaft hole, and a predetermined torque output is determined by the friction area between the two. In addition, through the guide groove of the driven sleeve and the pin design of the handle, the longitudinal displacement of the driven sleeve can be further restricted when the preset torque value exceeds the preset torque value, causing the handle and the driven sleeve to form idling, and the longitudinal displacement stroke of the driven sleeve can be further restricted, and the operation can be reminded. Or, therefore, it can avoid the loss caused by improper locking, which makes the torsion force exceed the range that the object to be locked can bear. In particular, the driving head of the driving rod can be a straight, cross-shaped, geometrically shaped tenon, or a sleeve with a geometrically shaped inner hole, so as to expand the scope of application of the present utility model, and it is truly the first of its kind. A masterpiece never seen before.

The disclosure of the utility model is a kind of preferred embodiment. For example, all partial changes or modifications are derived from the technical idea of the utility model and are easily inferred by those who are familiar with the art. category of rights.

Claims (9)

1. a torsion type throw is characterized in that, comprising:

One shaft-like handle, its top is provided with a protuberance, and the bottom axially makes the socket joint type pivot structure that has a torque value output of presetting between the two combine with the drive rod top via one, and at least one pin-and-hole is radially offered in this protuberance below;

One flexible member, it is socketed on handle, two ends prop up respectively this protuberance with from moving sleeve;

One from moving sleeve, is socketed on handle below, and the outer wall of its respective pin hole is opened a microscler guide groove, in addition with at least one latch by guide groove and be intercalated in corresponding pin-and-hole, and should be arranged with at least one breach from the moving sleeve root edge;

One drive rod, its top is socketed on handle, and by being coated from moving sleeve, and the bottom axially is provided with a tool heads, and this drive rod is radially prominent establishes at least one alignment pin, in the breach of its ccontaining correspondence.

2. torsion type throw as claimed in claim 1 is characterized in that, this protuberance is radially offered a bar hole, and one revolves passing through a bar hole, and this revolves vertically being positioned at this handle top.

3. torsion type throw as claimed in claim 2 is characterized in that, this bar hole upper shaft is incorporated into perforation to being communicated with a perforation with a forcing piece, the forcing piece bottom prop up this revolve and fix.

4. torsion type throw as claimed in claim 1, it is characterized in that, this tool heads is intercalated in the patchhole that this drive rod bottom is axially offered, this patchhole is radially offered the hole that connects of at least one connection, this connects hole confession-alignment pin combination, make this alignment pin the inner prop up this tool heads, the outer end then exposes to and connects the hole, so that be placed in the corresponding breach that is provided with of drive rod.

5. as claim 1 or 4 described torsion type throws, it is characterized in that this tool heads is the tenon for yi word pattern, cross, geometric modelling, or inner embedding hole is the sleeve of geometric modelling.

6. as claim 1 or 4 described torsion type throws, it is characterized in that this breach is an inverted V-shaped, it axially has a rib, and a hypotenuse is extended to the lower right in the top.

7. torsion type throw as claimed in claim 1 is characterized in that this socket joint type pivot structure is positioned at the binding site of this handle and drive rod, it comprises an axis hole and a jack-post, and wherein, this axis hole is single order shape hole, it is radially dashed forward and establishes a friction section, and has a recessed snapping portion; And at least one dissected valley is axially opened on the jack-post surface, and radially prominently establishes a flange part, and it is buckled in snapping portion, and this jack-post is tightened by friction section and this axis hole in.

8. torsion type throw as claimed in claim 7 is characterized in that, this jack-post is axially opened a post groove that communicates with dissected valley, ccontaining lubricating oil in it.

9. torsion type throw as claimed in claim 1, it is characterized in that, this pin-and-hole is two, and it is to be arranged above and below, and difference intercalation one latch, should go up latch is to prop up the guide groove apical margin, following latch then has a segment distance with the guide groove root edge, and this distance equals from the height of moving sleeve root edge breach, and breach also is two, it is to be located at relatively from the moving sleeve root edge, and ccontaining this drive rod relative alignment pin of projection radially.

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