KR101463456B1 - Torque wrench for vehicle - Google Patents

Abstract

The present invention relates to a vehicular torque wrench. According to an embodiment of the present invention, the vehicular torque wrench used to fasten and remove a bolt to couple various vehicular components includes: a socket section inserted, supported, and removed to fasten and remove the bolt; a housing section arranged on one side of the socket section and inserted into and supported on one side of the socket section; a shift unit arranged in the housing section, is coupled with the socket section, and shifts a rotation speed transmitted while being engaged with and guided by the housing section; a power transmission unit arranged on one side of the shift unit and coupled to transmit a rotating torque to the shift unit; a power generation unit arranged on one side of the power transmission unit and provides a torque for the power transmission unit which transmits the torque to the shift unit rotating the socket section; and a power adjustment unit arranged in a lateral direction in the power generation unit, locks and couples the power generation unit and the power transmission unit with each other such that a user-adjusted elastic force acts, and blocks power with the locking and coupling released when a torque larger than a preset elastic force is generated.

Description

TORQUE WRENCH FOR VEHICLE

The present invention relates to a torque wrench for an automobile. And more particularly, to a torque wrench for an automobile which can be adjusted to the size of a torque transmitted to a socket for tightening or loosening a bolt and can be easily carried.

Generally, an automobile is a tool made for the purpose of moving from the ground by a prime mover. When a wheel is rotated by using a power generated from a prime mover, it travels on the road by a torque, It is a device that moves to a place.

As described above, a coupling means is used to connect components such as a prime mover of an automobile, a device for transmitting power to wheels, and a steering device. Usually, bolts that are easy to disassemble and assemble are used.

The bolt is provided with a structure to be fastened and disassembled according to the direction of rotation, and the user performs an operation of fastening and disassembling the bolt by the operation of the operator while the bolt is located at the position where the parts are mutually fastened. At this time, the operator uses a wrench which is a tool capable of rotating the bolt to fasten and disassemble the bolt. The wrench can be fastened or disassembled by transmitting the torque to the socket coupled to the bolt by the torque generated when the operator rotates the wrench in a state where the wrench is inserted into and supported by the head part which is the fastening part of the bolt.

At this time, the bolts connecting the parts of the automobile are formed to have different strengths depending on the type, and the wrench can tighten or disassemble the bolts by transmitting the torque, which is a rotational force corresponding to the strength of the bolts, to the socket.

However, since the wrench is operated with the socket connected to the fastening portion of the bolt, if the bolt is rotated by an excessive torque exceeding the strength of the bolt, the head portion coupled with the socket is damaged or the thread is broken there was.

In order to solve the above problems, a conventional torque wrench is installed at one side of a wrench to adjust the torque transmitted to the socket by changing the length of the handle or the rotation axis of the handle to generate torque. Alternatively, a separate device for adjusting the magnitude of the torque may be attached to one side of the wrench to adjust the magnitude of the torque transmitted to the socket.

However, when adjusting the torque transmitted to the socket by changing the length of the handle or the rotation axis of the handle, the magnitude of the torque transmitted when the bolts are fastened or disassembled may slightly differ depending on the force of the operator. There is a problem that it is difficult to transmit the corresponding correct torque to the socket.

Further, when a separate device for adjusting the torque magnitude is attached to a wrench on one side of the torque wrench, the bulky wrench has a problem in that it is inconvenient to carry and use the wrench.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a torque wrench for an automobile which can control the torque transmitted to a socket to which a bolt is coupled and is easy to carry.

The objects of the present invention are not limited to those mentioned above, and other objects not mentioned may be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a torque wrench for an automobile, which is used for fastening and disassembling a bolt for coupling various components to an automobile, A socket portion which is inserted and supported and released, a housing portion which is disposed on one side of the socket portion and is inserted and supported on one side of the socket portion, a housing portion which is disposed inside the housing portion, is engaged with the socket portion, A power transmission portion disposed at one side of the transmission portion and coupled to transmit a torque to be transmitted to the transmission portion, a power transmission portion disposed at one side of the power transmission portion, A power generating unit that provides torque to the power transmitting unit that transmits torque to the speed changing unit that rotates, And a power transmitting portion that is disposed in a lateral direction inside the power generating portion and is engaged with the power generating portion and the power transmitting portion so as to apply an elastic force adjusted by a user, and when a torque greater than a predetermined elastic force is generated, And a power regulator for interrupting the power.

The housing portion may include a housing space in which the transmission portion is housed, a socket inserting hole penetrating the socket portion for inserting the socket portion into the housing portion, the housing portion being disposed on one side of the socket portion, A support bracket that is protruded from one side of the housing body and protrudes from a side surface of the support body, the support bracket being protruded from the side surface of the housing body; And a support body for supporting the bolt to prevent the bolt from flowing when the bolt is fastened and released from a side away from the socket portion, and a support body disposed on one side of the support body, the support body being supported by the support bracket And a fixing body which is fixed to the base body.

The transmission portion includes a shift transmission body disposed at one side of the socket portion and inserted into the socket portion to transmit power to the socket portion in a state in which the power generated by the power generation portion is shifted, A first driven gear rotatably disposed on one side surface of the housing and rotatably coupled to the inner surface of the housing portion in a radial position while being guided and coupled to each other to rotate the transmission body, A first drive gear that rotates the speed change transmission body by rotation of the first driven gear while being shifted in accordance with each gear ratio in a state of being engaged with the first driven gear, And a second drive gear disposed on one side of the first drive gear, A second driven gear which is rotatably disposed on one side of the shift support body and which is coupled to the inner surface of the housing part at least in a radial position to be guided while being reciprocally coupled to rotate the shift support body, And a second driven gear which is disposed so as to be engaged with the center of the second driven gear located radially and which is shifted in accordance with each gear ratio while being engaged with the second driven gear, A second driving gear disposed on one side of the second driving gear and rotatable together with the second driving gear, and the power transmitting portion for transmitting the power generated by the power generating portion is inserted and coupled to one side of the second driving gear, Wherein the speed change drive groove is formed on one side of the inner surface of the speed change drive groove, And a speed change drive body formed by a transmission key groove which is engaged to transmit a torque of the lunar section and is rotated by a torque transmitted to the power transmission section, and a transmission drive body disposed on one side of the transmission drive body, The shift cover may include a shift cover that is mounted to be rotatable to prevent the shift drive body from being detached from a state in which the shift cover is detached, and the shift cover may include a fixed gear to be fixed to the housing portion on an outer circumference thereof.

The power transmitting portion is disposed at one side of the transmission portion and includes a plurality of engagement grooves at radial positions which are located inside the power generating portion and engage with the power regulating portion at the outer periphery, And a power transmitting member which is engaged with the power transmitting member and is projected to be rotated together with the power transmitting member and is inserted into the transmission portion on one side, A transferring protrusion protruding from one side of the power transmitting body and having a transmission key protruding to be engaged with the key, A rotation support protrusion disposed to support the rotation, A transmission support bearing disposed in the transmission support portion and rotatably supported in the power generation portion when the power transmission member rotates; a transmission support bearing inserted in the rotation support projection and positioned at one side of the power transmission member, A rotation support bearing for supporting the rotation of the power transmitting body inside the generating portion, and a cover hole disposed on the other side of the power transmission body and penetrating the transmission transmitting protrusion so as to be inserted into the center, And a transmission supporting cover for supporting the other side surface of the transmission supporting bearing located inside the power generating portion to prevent the transmission supporting bearing from being detached to the outside.

In addition, the power generating unit may include a generation body disposed at one side of the power transmission unit and having a space-type generation and transmission space in which the other side is opened and one side is closed and the power transmission unit is located in the other direction from the inside, A power adjusting space is provided which extends in one direction of the body and provides torque to be generated by the operation of the user and rotates in a hollow form communicating with the generation and transmission space, And a handle having a control screw threadably engaged with the power regulator at an outer end of the generation transmission space.

The power regulator may include a spherical power adjusting ball disposed inside the power generating unit and engaging with the power transmitting unit installed in the power generating unit and disposed inside the power generating unit, And the engaging force is applied to the power transmitting portion by the resilient force. When the torque for engaging and releasing the bolt is smaller than the engaging force provided at the time of power transmission, the engaging force acts Wherein the power regulating ball maintains the engaged state, and when the torque is greater than the provided engaging force, the regulating elastic body is released from the engaged state of the power regulating ball to shut off the power while idling, And is disposed on one side of the power generating portion so as to be supported on one side surface of the regulating elastic body And an adjustment bolt which is fastened inwardly of the elastic body and adjusts the elastic force of the elastic body while moving to one side and the inner side by a user's operation.

A torque wrench for a vehicle according to an embodiment of the present invention includes a handle for generating a torque and a torque sensor for detecting a torque corresponding to the strength of the bolt between a transmission portion connected to a socket portion coupled with the bolt and generating torque by a shift, Since the torque adjusting portion is provided to adjust the torque to be transmitted, the torque necessary for tightening and releasing can be transmitted while minimizing the damage of the bolt, thereby improving the operational convenience.

Further, the torque adjusting portion provided between the handle and the transmission portion for generating power to the automotive torque wrench according to the present invention is elastically supported by an elastic member whose elasticity is controlled by an external operation, so that the torque transmitted by adjusting the elastic force can be adjusted, It is possible to prevent the excessive torque from being transmitted by the operation of the user, so that the operating efficiency of the fastening and disassembling can be improved while improving the service life of the bolt.

The torque wrench for an automobile according to the present invention is separated from the torque adjusting portion and the transmission portion so that the torque adjusting portion is elastically deformed by an elastic force that is controlled by a user in a position where the ball inserted into the outer circumferential edge The torque is transmitted to the transmission portion while the balls are caught while the balls are engaged when the balls are transmitted according to the adjusted elastic force, and when the torque is generated beyond the elastic force, the balls are released from the balls and transmit only the adjusted torque according to the idling, As the power transmission is performed, the use efficiency can be improved.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an operating state of a car torque wrench according to an embodiment of the present invention; FIG.
2 is an exploded perspective view showing the automotive torque wrench shown in Fig. 1;
3 is a perspective view showing a power transmitting portion, a power generating portion, and a power adjusting portion which are a main portion of the automotive torque wrench shown in Fig.
4 is an exploded perspective view showing a power transmitting portion, a power generating portion, and a power adjusting portion which are a main portion of the automotive torque wrench shown in Fig. 3;

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unnecessary. The terms described below are defined in consideration of the structure, role and function of the present invention, and may be changed according to the intention of the user, the intention of the operator, or the custom.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art to which the present invention pertains, It is only defined by the scope of the claims. Therefore, the definition should be based on the contents throughout this specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure, operation and effect of a torque wrench for a vehicle according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a torque wrench for an automobile shown in Fig. 1, Fig. 3 is an exploded perspective view showing an automobile torque wrench according to an embodiment of the present invention, Fig. FIG. 4 is an exploded perspective view showing a power transmitting portion, a power generating portion, and a power adjusting portion which are a main portion of the automotive torque wrench shown in FIG. 3. FIG. 4 is a perspective view showing a main portion of the power transmitting portion, the power generating portion, and the power adjusting portion.

1 to 4, the torque wrench 100 for an automobile according to an embodiment of the present invention is used for fastening and disassembling bolts for coupling various parts to an automobile. And to provide a torque during the fastening and disassembling operation.

The torque wrench 100 for an automobile according to an embodiment of the present invention includes a socket portion 110, a housing portion 120, a speed change portion 130, a power transmission portion 140, A power generating unit 150, and a power adjusting unit 160. The socket portion 110 is provided to be inserted into and supported by the bolt head at the time of fastening and disassembling the bolt. Here, the socket part 110 may be variously provided according to the shape and the shape of the bolt.

The housing part 120 includes a housing body 121 in which one side of the socket part 110 is inserted, a support bracket 125, a support body 126, and a fixing body 127. The housing body 121 is disposed at one side of the socket portion 110 and has a housing space 122 in which a transmission portion is received and a socket inserting hole 123 penetrating the socket portion 110 to insert the socket portion 110 into the other side. . The housing body 121 is formed at one side of the socket portion 110 and has a housing space 122 therein so that the transmission portion 130 housed therein and the socket portion 110 inserted into one side from the other side are coupled to each other, .

The housing body 121 is provided with a guide gear 124 which is engaged with the speed change portion 130 along the inner circumference of the housing space 122 to guide the speed change. The guide gear 124 is provided in a gear form so as to be engaged with the outer side of the transmission portion 130 so as to guide the shift in a state of being engaged with the gear portion 130 when the transmission portion 130 coupled to the socket portion 110 is rotated Respectively.

The support bracket 125 protrudes from one side surface of the housing body 121 and protrudes from the side surface of the housing body 121. The support bracket 125 is extended from the housing body 121 in one lateral direction so that the support body 126 is located on one side of the support bracket 125 away from the socket portion 110.

The support body 126 is disposed on the other side of the support bracket 125 and is provided to support the bolt at a side remote from the socket part 110 to prevent the bolt from flowing when tightening and releasing the bolt. The support body 126 is positioned to be fixed to the support bracket 125 on one side remote from the socket unit 110 and supports the one side when the socket unit 110 is inserted for fastening and disassembling the bolt, 110 to prevent the bolt from rotating smoothly by distributing the load concentrated on the socket portion 110.

The fixing body 127 is disposed at one side of the supporting body 126 and is provided to fix the supporting body 126 in a state of being supported by the supporting bracket 125. [ The fixture 127 is provided at one side to fix the support body 126 in a state where the support body 126 is inserted into and supported by the support bracket 125.

The transmission portion 130 includes a shift transmission body 131 coupled with the socket portion 110 and a first driven gear 132, a first drive gear 133, a shift support 134, A second drive gear 136, a speed change drive body 137, and a speed change cover 138. The second drive gear 136, The shift transmission body 131 is disposed on one side of the socket unit 110 and is inserted into the socket unit 110 to transmit power generated by the power generation unit 150 to the socket unit 110 in a shifted state, . The shift transmission body 131 is coupled to the socket portion 110 and is adapted to rotate together to transmit a torque to the socket portion 110 supported by the bolt in a state in which the torque generated by the power generating portion 150 is shifted. do.

The first driven gear 132 is rotatably disposed on one side of the speed change transmission body 131 and is engaged with at least one or more than one of the guide gears 124 in the radial position, (131). The first driven gear 132 is rotated along the guide gear 124 by rotation in a state of being engaged with the first drive gear 133 so that the gear ratio of the first drive gear 133 and the first driven gear 132 And the transmission transmission body 131 is rotated.

The first drive gear 133 is disposed to be engaged with the center of the first driven gear 132 located radially and is shifted in accordance with the gear ratio while being engaged with the first driven gear 132, (132) to rotate the transmission transmission body (131).

The shift support body 134 is disposed on one side of the first drive gear 133 and is provided to rotate together with the first drive gear 133. The shift supporting body 134 is provided to transmit the torque, which is rotated by the second driven gear 135, to the first drive gear 133. [ That is, the shift support body 134 rotates the power generated by the power generator 150 by the first drive gear 136 and the second drive gear 136, which are shifted secondarily after first shifting the power generated by the power generator 150 by the second drive gear 136 and the second driven gear 135 133, respectively.

The second driven gear 135 is rotatably disposed on one side of the shift support body 134 and is engaged with at least one or more than one of the guide gears 124 in the radial position, As shown in FIG. The second driven gear 135 is arranged to be shifted while being guided by the rotation of the second drive gear 136 in the radial position to the guide gear 124 to rotate the shift support 134.

The second drive gear 136 is disposed so as to be engaged with the center of the second driven gear 135 located radially and is shifted in accordance with each gear ratio while being engaged with the second driven gear 135, And is configured to rotate the shift support body 134 by the rotation of the gear 135. When the second driven gear 136 is rotated by a torque generated by the power generating unit 150, the second driven gear 135 is rotated. When the second driven gear 135 is rotated, the second driven gear 135 rotates according to the gear ratio, Thereby rotating the variable speed support body 134.

The speed change drive body 137 is disposed on one side of the second drive gear 136 and rotates together with the second drive gear 136 and is coupled with the power transmission portion 140 so that one side thereof is rotated together with the power transmission portion 140.

The speed change drive groove 137a is formed at one side of the speed change drive body 137 with a power transmission portion 140 for transmitting the power generated by the power generation portion 150 inserted therein, A shift key groove 137b is formed on one side of the side surface to transmit the torque of the power transmitting portion 140 and is rotatable by a torque transmitted to the power transmitting portion 140. [ The speed change drive body 137 is key-engaged with the speed change key groove 137b in a state where the power transmission portion 140 is inserted into the speed change drive groove 137a on one side and is rotated by the torque generated in the power generation portion 150, 2 drive gear 136, as shown in FIG. When the second drive gear 136 is rotated, the second driven gear 135 coupled to the radially-engaged gear is guided to the guide gear 124 and is primarily shifted to rotate the shift support 134. When the first drive gear 133 is rotated by the rotation of the shift support body 134 and the first driven gear 132 is guided by the guide gear 124, (131).

That is, when the power generated by the power generating portion 150 is rotated through the power transmitting portion 140 and the speed change drive body 137, the first drive gear 136 and the second driven gear 135 are firstly shifted , The rotation efficiency can be improved by rotating the socket unit 110 with the torque transmitted after the second drive gear 133 and the first driven gear 132 are shifted in a secondary direction.

The shift cover 138 is disposed on one side of the speed change drive body 137 and includes a variable speed drive body 137 rotated in order to prevent the speed change drive body 137 from being detached to one side in a state in which the shift drive body 137 is located inside the housing body 121. [ (Not shown).

A fixed gear 139 is formed on the outer periphery of the transmission cover 138 so as to be engaged with the guide gear 124. The shift cover 138 is disposed at one side of the housing body 121 so that the shift drive body 137 is supported inside the housing body 121 so that a fixed gear 139 formed on the outer periphery thereof is fixedly inserted into the guide gear 124, So as to prevent the body 137 from coming off.

The power transmitting portion 140 includes a power transmitting body 141 connected to the speed change drive body 137 to transmit torque, a transmission insertion protrusion 142, a rotation support protrusion 145, a transmission support bearing 146, (147), and a transmission support cover (148).

The power transmitting body 141 is disposed on one side of the speed change driving body 137 and is provided with a locking groove 141a located inside the power generating portion 150 and engaging with the power adjusting portion 160 on the outer circumference, And is installed to rotate together with the power generating unit 150 while being hooked at a plurality of positions when the power generating unit 150 is rotated. The power transmitting body 141 is provided at a position where it is engaged with the power regulating part 160 in the power generating part 150 and a plurality of engaging grooves 141a are formed at radial positions on the outer circumferential side, So that the unit 160 is engaged with one of the plurality of latching grooves 141a.

That is, the power transmitting body 141 is provided to be rotated by the power generated by the power generating unit 150 by being hooked by the power adjusting unit 160, and the power adjusting unit 160 may be configured such that the bolt is damaged or broken The power regulator 160 is hooked on the power transmitting member 141 to transmit the torque of the power generating unit 150. When the settling force is exceeded, The engaging operation with the power transmitting member 141 is released and the power regulating unit 160 is idled along the outer circumference of the power transmitting member 141 so that the transmission of the power is interrupted.

The transmission insertion protrusions 142 protrude from the other side of the power transmission body 141 and are inserted into the transmission drive groove 137a of the transmission drive body 137 and are projected to rotate together with the power transmission body 141, A transmission key 143 protruded to be inserted into the transmission keyway 137b of the speed change drive body 137 is formed. The transmission insertion protrusion 142 protrudes from the other side of the power transmission body 141 and is key-engaged while the transmission key is inserted into the transmission key groove 137b when the transmission drive groove 137a of the transmission drive body 137 is inserted, 141, the speed change drive body 137 is provided so as to be rotatable together.

A transmission support portion 144 having a cylindrical shape in which a transmission support bearing 146 is inserted and supported is formed at one side portion of the transmission insertion protrusion 142. The transmission support part 144 is provided in a cylindrical shape in which a transmission support bearing 146 for rotatably supporting the power generation part 150 and the transmission insertion protrusion 142 is provided.

The rotation supporting protrusions 145 protrude from one side of the power transmitting body 141 and are disposed on one side in the direction of insertion of the power generating part 150 and protrude to support the rotation. The rotation support protrusions 145 protrude from one side of the power transmission body 141 so as to be provided with a rotation support bearing 147 protruding from the one side of the power transmission body 141,

The transmission support bearing 146 is inserted into the transmission insertion protrusion 142 and is disposed on the transmission support portion 144 so as to be rotatably supported in the power generation portion 150 when the power transmission body 141 rotates. The transmission support bearing 146 is installed between the transmission insertion protrusion 142 and the power generating portion 150 so that the power is interrupted between the power adjusting portion 160 and the power transmitting body 141, So that the projection 142 is prevented from being rotated while being slid.

The rotation support bearing 147 is inserted into the rotation support protrusion 145 and is disposed on one side of the power transmission member 141 to support the rotation of the power transmission member 141 inside the power generation unit 150 . The rotation support bearing 147 is installed between the rotation support protrusion 145 and the power generating part 150 so that the power is interrupted between the power adjusting part 160 and the power transmitting part 141, The rotation support protrusion 145 is supported so as to be prevented from being rotated while being slid.

The transmission support cover 148 is disposed on the other side of the power transmitting body 141 and is formed with a cover hole 148a through which the transmission insertion protrusion 142 is inserted to the center, And supports the other side of the transmission support bearing 146 located inside the generating part 150 to prevent it from being detached to the outside. The transmission support cover 148 is inserted into the cover hole 148a so that the transmission insertion protrusion 142 protrudes to the other side while the power transmission body 141 is located inside the power generation portion 150, So as to prevent the power transmission body 141 from being released to the other side during rotation.

The power generating portion 150 includes a generating body 151 in which the power transmitting portion 140 is located, and a handle 153. The generating body 151 is disposed on one side of the power transmitting body 141 and the other side is opened and the other side is closed so that the transmission transmitting body 142 is partially protruded from the inside to the other side, And a generation transmitting space 152 is provided at the other side of the power transmitting body 141 so that the transmitting supporting bearing 146 and the rotating supporting bearing 147 are rotatably supported on one side.

The generation transmitting space 152 is formed in a state in which the power transmission body 141 is positioned inside and the rotary support bearing 147 having one side inserted into the rotary support protrusion 145 is contacted and supported, One side of the transmission support bearing 146 is formed to be closed by the transmission support cover 148 in a state in which it is supported by the support.

The handle 153 extends in one direction of the generating body 151 and provides torque to be generated by the body 151 by the user's operation and communicates with the generation transmitting space 152 in a hollow form And a control screw 155 that is threadedly coupled to the power regulator 160 at an outer end of the generation transmitting space 152 . The handle 153 is provided to generate torque that is rotated by the user's manipulation around the generating body 151 and communicates with the generation transmitting space 152 in the handle 153 to engage with the power transmitting body 141 A power adjusting space 154 in which the power adjusting unit 160 is held while the power is controlled is formed at the other end of the power adjusting space 154. The adjusted portion of the power adjusting unit 160 is screwed (Not shown).

The handle 153 is provided in the form of a bar extending on one side of the generating body 151. When the user rotates while holding the handle 153, the power regulator 160, which is located inside the handle 153, engages with the power transmission body 141, While transmitting the torque to the transmission portion 130. The transmission portion 130 changes the speed at which the transmission portion 130 is rotated and transmits the torque to the socket portion 110 so that the bolt is fastened and disassembled along the rotating direction, Respectively.

The power regulator 160 includes a power regulating ball 161, a regulating elastic body 162 and an adjusting bolt 163 which are engaged with the power transmission body 141 in the generating body 151. The power adjusting ball 161 is disposed inside the generating body 151 and is formed in a spherical shape to be inserted into the engaging groove 141a of the power transmitting body 141 located inside the generation transmitting space 152. [ The power adjusting ball 161 is engaged with the power transmitting body 141 housed in the generation transmitting space 152 through the generation transmitting space 152 inside the handle 153 while being elastically supported by the adjusting elastic body 162 And is engaged with the groove 141a.

The adjustable elastic body 162 is disposed in the generation transmitting space 152 of the handle 153 and is elastically supported by the power adjusting ball 161 so that the engaging groove 141a of the power transmitting body 141 Lt; / RTI > When the torque for engaging and releasing the bolt is smaller than the engaging force provided at the time of power transmission, the adjusting elastic body 162 acts to engage and disengage the power adjusting ball 161 And when the torque is larger than the provided engaging force, the engaging state of the power regulating ball 161 is released and the power can be shut off while idling. That is, when the bolt is fastened and disassembled, the adjusting elastic body 162 provides an elastic force which is set so as to provide a torque within a range that is not damaged and broken, so that when the bolt is fastened and disassembled, The lifetime of the bolt is increased and the ease of use is improved.

The adjustment bolt 163 is disposed internally at one open side of the power adjustment space 154 of the handle 153 and is coupled to the adjustment screw 155 to be supported on one side of the adjustable elastic body 162, To adjust the elastic force of the adjusting elastic body (162) while moving in one side direction within the power adjusting space (154) by operation.

When the user moves between one side surface of the power adjusting space 154 and the inside of the power adjusting space 154 by the turning operation while the adjusting bolt 163 is fastened to the adjusting screw 155 inside the power adjusting space 154, 161 to adjust the elastic force of the elastic body 162 elastically supporting the elastic body 162. When the resilient force of the adjusting elastic body 162 is adjusted by the adjusting bolt 163, the holding force of the power adjusting ball 161 is adjusted, and by adjusting the transmitted size of the torque for fastening and disassembling the bolt by the adjusted holding force, Damage or damage to the bolt can be minimized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: car torque wrench 110: socket part
120: housing part 121: housing body
122: housing space 123: socket insertion hole
124: Guide gear 125: Support bracket
126: Support body 127: Fixture
130: transmission portion 131: shift transmission body
132: first driven gear 133: first drive gear
134: shift support 135: second driven gear
136: second drive gear 137: speed change drive body
137a: shift drive groove 137b: shift key groove
138: Shift cover 139: Fixed gear
140: Power transmission unit 141: Power transmission unit
141a: engagement groove 142: transmission insertion projection
143: transfer key 144: transfer support
145: rotation support projection 146: transmission support bearing
147: rotation support bearing 148: transmission support cover
148a: cover hole 150: power generating portion
151: Generation body 152: Generation transmission space
153: handle 154: power adjustment space
155: adjusting thread 160: power adjusting part
161: power regulating ball 162: regulating elastic body
163: Adjusting bolt

Claims (6)

1. A torque wrench for a motor vehicle used for fastening and disassembling bolts for coupling various parts to an automobile,
A socket portion to be inserted and released for engaging and disengaging the bolt,
A housing part disposed at one side of the socket part and inserted and supported at one side of the socket part,
A transmission portion which is disposed inside the housing portion and is engaged with the socket portion to be engaged with the housing portion and is guided to change the transmitted rotational speed,
A power transmitting portion disposed at one side of the transmission portion and coupled to transmit a torque to be transmitted to the transmission portion,
A power generating portion disposed at one side of the power transmitting portion and providing torque to the power transmitting portion for transmitting torque to the transmission portion for rotating the socket portion;
The power generating unit and the power transmitting unit are engaged with each other to apply an elastic force controlled by a user. When a torque greater than a preset elastic force is generated, the engagement is released And a power regulator for interrupting power,
The power regulator includes:
A power regulating ball disposed inside the power generating portion and engaging with the power transmitting portion provided in the power generating portion,
And a resiliently biasing force is applied to the power transmitting part by the resilient force. The bolt is engaged and disengaged with respect to the engaging force when the power is transmitted, When the torque to be applied to the power regulating ball is small, the power regulating ball maintains the engaged state by the engaging force, and when the torque is greater than the provided engaging force, the regulating elastic body, And
The power generating unit is internally disposed on one side of the power generating unit and is coupled inward from one side of the power generating unit to be supported on one side of the adjusting elastic member, And an adjusting bolt for adjusting the elastic force of the elastic body,
Wherein the power generating portion includes a handle having a hollow extending in one direction,
The power transmission unit includes:
And a power transmission body having an outer circumferential surface facing the hollow and having a curved groove formed on the outer circumferential surface,
Wherein the power control ball is disposed to be engaged with the hollow and is configured to reciprocate in one direction in contact with the outer peripheral surface,
Wherein the adjustable elastic body is formed to be elastically deformed in one direction in contact with the power control ball.
The method according to claim 1,
The housing part,
A socket inserting hole formed at one side of the socket portion and having a housing space in which the transmission portion is housed and having the socket portion inserted into the other side thereof, A housing body provided with a guide gear for guiding a speed change,
A support bracket that is protruded from one side of the housing body and protrudes from the side surface of the housing body,
A support body disposed on the other side of the support bracket and supporting the bolt to prevent the bolt from flowing when fastening and releasing the bolt at a side away from the socket,
And a fixture disposed at one side of the support body and fixing the support body in a state of being supported by the support bracket.
The method according to claim 1,
Wherein the transmission portion includes:
A shift transmission body disposed at one side of the socket portion and inserted into the socket portion to transmit power to the socket portion in a state in which the power generated by the power generating portion is shifted,
A first driven gear rotatably disposed on one side of the shift transmission body and coupled to the inner surface of the housing portion at least in a radial position to be guided while being reciprocally engaged to rotate the shift transmission body,
Wherein the first driven gear is rotatably coupled to the first driven gear by a rotation of the first driven gear while being shifted in accordance with each gear ratio in a state of being engaged with the first driven gear, The first drive gear,
A shift support disposed on one side of the first drive gear and rotated together with the first drive gear,
A second driven gear rotatably disposed on one side of the shift support body and coupled to the inner surface of the housing unit at least in a radial position to be guided while being reciprocally engaged to rotate the shift support body,
The second driven gear being arranged to be engaged with the center of the second driven gear located radially and being shifted in accordance with each gear ratio in a state of being engaged with the second driven gear to rotate the transmission support by rotation of the second driven gear The second driving gear,
A speed change drive groove is formed on one side of the second drive gear so that the power transmission portion for transmitting the power generated by the power generation portion is inserted and coupled to the first drive gear, , A speed-change drive body formed on one side of the inner surface of the speed change drive groove with a transmission key groove engaged to transmit torque of the power transmission portion and rotated by a torque transmitted to the power transmission portion,
The shift drive body is disposed on one side of the shift drive body and is supported to be rotatable in order to prevent the shift drive body from being separated from the shift transmission body in a state where the shift drive body is located inside the housing, And a shift cover formed with a fixed gear so as to be fixed to the vehicle body.
The method according to claim 1,
The power transmission unit includes:
A plurality of engagement grooves disposed radially at one side of the power transmitting portion and engaging with the power regulating portion at an outer periphery of the power generating portion, A power transmission body rotated together with the power transmission body,
A transmission key that is protruded from the other end of the power transmission member and protrudes to be rotated together with the power transmission member and is inserted into the transmission portion and protruded to be key- A transfer insertion protrusion for forming a cylindrical transfer support to be supported at the time of rotation,
A rotation support protrusion disposed on one side of the power transmission member and disposed on one side of the power generation member in a direction of insertion of the power generation member,
A transmission support bearing inserted in the transmission insertion protrusion and rotatably supported in the power generation portion when the power transmission member is rotated,
A rotation support bearing inserted in the rotation support projection and positioned at one side of the power transmission member to support the rotation of the power transmission unit inside the power generation unit,
A cover hole penetrating the power transmission member to penetrate the transmission insertion protrusion is formed at the center of the power transmission member and inserted into the transmission insertion protrusion to support the other side of the transmission support bearing located inside the power generation unit And a transmission support cover for preventing the motor from being detached to the outside.
The method according to claim 1,
The power generation unit includes:
A generation body disposed at one side of the power transmission portion and having a space-type generation and transmission space in which the other side is opened and one side is closed and the power transmission portion is located in the other direction from the inside;
A power adjustment space extending in one direction of the generation body and provided with a torque to be rotated by a user in operation and communicating with the generation and transmission space in a hollow form, And a handle having an adjusting thread threadably engaged with the power regulating portion at an outward end of the generating and transmitting space.
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