JP3218316U - Two-stage universal joint - Google Patents

Abstract

A socket and a drive member are provided, the drive member can be effectively positioned at a first position or a second position, and the coupling strength between the drive member and the socket is sufficient. A two-stage universal joint that can be operated even at high torque is provided. A storage space and a connecting portion are provided along the axial direction, and a plurality of engagement protrusions extending along the axial direction are provided on the back wall of the storage space. A socket 1 having a recess and a polygonal ball-shaped head are provided on the back wall of the space, and a plurality of arc surface steps are provided on the polygonal ball-shaped head. These arcuate surface steps are inserted into the accommodating space, and are arranged between the driving member 2 pressed against the engaging projection, the bottom of the accommodating space, and the polygonal ball-shaped head. And an elastic member biasing to the second position. [Selection] Figure 1

Description

  The present invention relates to a two-stage universal joint.

  The universal joint is used for a hand tool that can be rotated at multiple angles, and includes a ball-shaped head base and a drive rod. A ball-shaped head is provided at one end of the drive rod. The ball-shaped head is slidably provided on the ball-shaped head base so as not to rotate with respect to the ball-shaped head base. The drive rod can slide to a fixed position or a swing position with respect to the ball-shaped head base. When the drive rod is located at the fixed position, the radial projection of the drive rod is pressed against the ball-shaped head base and locked, and cannot relatively swing. When the drive rod is pulled out of the ball-shaped head base and positioned at the swing position, the radial convex portion of the drive rod does not engage with the ball-shaped head base and does not engage the ball-shaped head base. Can be swung. At this time, the universal joint can be rotated at multiple angles and can be operated even in a narrow work place. However, the driving rod of the conventional universal joint cannot be effectively positioned at the fixed position or the swinging position to be adjusted. Since the drive rod is slidable between the fixed position and the swing position, the operator must stop the work and adjust the drive rod to a position to move during the work. Unable to resume work. For this reason, utilization was very inconvenient.

  A main object of the present invention is to provide a socket and a drive member, and to effectively position the drive member in the first position or the second position. The strength of the coupling between the drive member and the socket is high. The object is to provide a two-stage universal joint which is sufficient and can be operated even at high torque.

  According to the two-stage universal joint of the present invention, the accommodation space and the connecting portion are provided along the axial direction, and a plurality of engagement protrusions extending along the axial direction are provided on the back wall of the accommodation space. A socket having a recess and a polygonal ball-shaped head are provided on the back wall of the housing space, and a plurality of arc surface steps are provided on the polygonal ball-shaped head. The square ball-shaped head is inserted into the accommodating space, and each of the arc surface steps presses against the engaging protrusion, and the drive member can slide the socket between the first position and the second position. An elastic pressing member is provided on the polygonal ball-shaped head, and the elastic pressing member is provided between the driving member that is always pressed outward along the radial direction, the bottom of the accommodating space, and the polygonal ball-shaped head. Are arranged in the An elastic member that biases the moving member to the second position, and when the driving member is located at the first position, the elastic pressing member is elastically pressed against the recess, and the driving member is centered on the polygonal ball-shaped head. When the drive member cannot move with respect to the socket and is moved to the second position by an external force, the elastic pressing member is detached from the recess, and the drive member is elastically pressed against the elastic member, It is possible to move to two positions and swing with respect to the socket with the polygonal ball-shaped head as an axis.

  According to the two-stage universal joint of the present invention, the elastic pressing member includes an engaging member and a spring, and the receiving hole is provided in the polygonal ball-shaped head, and the engaging member can slide into the receiving hole. The spring is disposed between the bottom of the receiving hole and the engaging member, and elastically presses both of them, so that the engaging member is regulated in the receiving hole and is always removed. The concave portion is a first annular groove provided on the back wall of the accommodation space.

  According to the two-stage universal joint of the present invention, the groove surface of the first annular groove has an arc shape, and the receiving space is provided with a plurality of engagement recesses extending along the axial direction. The projections and these engagement recesses are provided so as to intersect with each other along the circumferential direction of the accommodation space, and the first annular groove extends between these engagement projections and these engagement recesses, and the polygonal ball-shaped head A corner portion is formed between any two adjacent arc surface steps, and each corner portion is pressed against the engagement recess.

  According to the two-stage universal joint of the present invention, the working member and the radial convex edge are integrally formed on the drive member, and the radial convex edge is provided between the working part and the polygonal ball-shaped head. When the drive member is located at the first position, the radial convex edge is pressed against the back wall of the accommodation space. When the drive member is located at the second position, the radial convex edge is the accommodation space. It is characterized in that it cannot be pressed against the back wall.

  According to the two-stage universal joint of the present invention, the second annular groove is provided at one end far from the connecting portion of the accommodation space, and the stop member is provided in the second annular groove so as to be detachable. When the drive member moves to the second position, the stop member is pressed against and locked by the polygonal ball-shaped head, whereby the polygonal ball-shaped head cannot be detached from the accommodation space, and the elastic member Is characterized by being gradually reduced in diameter from the connecting portion to the accommodating space and pressed against the end face of the polygonal ball-shaped head facing the connecting portion.

  According to the two-stage universal joint of the present invention, a socket and a drive member are provided, and the drive member can be effectively positioned at the first position or the second position, and between the drive member and the socket. The strength of the coupling is sufficient, and it is possible to operate even with a high torque.

FIG. 1 is a perspective view showing a two-stage universal joint according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a two-stage universal joint according to the first embodiment of the present invention. FIG. 3 is an exploded perspective view showing the two-stage universal joint according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view showing a usage state of the two-stage universal joint according to the first embodiment of the present invention. FIG. 5 is a cross-sectional view showing a usage state of the two-stage universal joint according to the first embodiment of the present invention. FIG. 6 is a cross-sectional view showing a usage state of the two-stage universal joint according to the first embodiment of the present invention. FIG. 7 is a perspective view showing a two-stage universal joint according to the second embodiment of the present invention. FIG. 8 is a cross-sectional view showing a two-stage universal joint according to the second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
Please refer to FIG. 1 to FIG. The two-stage universal joint according to this embodiment includes a socket 1, a drive member 2, and an elastic member 3.

  The socket 1 is provided with an accommodation space 12 and a connection portion 13 along the axial direction 11. A plurality of engagement protrusions 121 extending along the axial direction 11 are provided on the back wall of the accommodation space 12. A recess 14 is provided in the back wall of the accommodation space 12. The connection part 13 can be connected to a rotatable tool.

  A polygonal ball-shaped head 21 is provided on the drive member 2. A plurality of arc surface steps 211 are provided on the polygonal ball-shaped head 21. The polygonal ball-shaped head 21 is inserted into the accommodation space 12. Each arcuate surface step 211 is pressed against the engaging protrusion 121. The drive member 2 can slide between the first position and the second position with respect to the socket 1. An elastic pressing member 22 is provided on the polygonal ball-shaped head 21. The elastic pressing member 22 always urges outward along the radial direction.

  The elastic member 3 is disposed between the bottom of the accommodation space 12 and the polygonal ball-shaped head 21 and is elastically pressed against both. Thereby, the drive member 2 is biased to the second position.

  When the driving member 2 is located at the first position, the elastic pressing member 22 is elastically pressed against the recess 14, and the driving member 2 swings with respect to the socket 1 about the polygonal ball-shaped head 21. Can not. The drive member 2 and the socket 1 are located on the same straight line. The elastic pressing member 22 is elastically pressed against the recess 14. At this time, the drive member 2 cannot arbitrarily move to the second position. When the drive member 2 is moved to the second position by an external force, the elastic pressing member 22 is detached from the recess 14 and the drive member 2 is elastically pressed against the elastic member 3 and moved to the second position. The drive member 2 can swing with respect to the socket 1 about the polygonal ball-shaped head 21 as an axis. At this time, the socket 1 and the drive member 2 can be rotated relatively at multiple angles. When trying to move the drive member 2 to the first position, it is possible to return the drive member 2 to the first position by overcoming the elasticity of the elastic member 3 by applying an external force. Thereby, the drive member 2 can be quickly positioned at the first position or the second position, and cannot be arbitrarily slid with respect to the socket 1. For this reason, use becomes convenient. In the present embodiment, the elastic member 3 is gradually reduced in diameter from the connection portion 13 to the accommodation space 12 and is pressed against the end surface of the polygonal ball-shaped head 21 facing the connection portion 13.

  Specifically, the elastic pressing member 22 includes an engagement member 221 and a spring 222. A receiving hole 212 is provided in the polygonal ball-shaped head 21. The engaging member 221 is slidably provided in the accommodation hole 212. The spring 222 is disposed between the bottom of the accommodation hole 212 and the engagement member 221 and elastically presses both. As a result, the engaging member 221 is regulated in the accommodation hole 212 and is always pressed outward. The engaging member 221 according to the present embodiment is a ball.

  The recess 14 is preferably a first annular groove 141 provided in the back wall of the accommodation space 12. For this reason, when it is going to assemble the drive member 2 and the socket 1, it is not necessary to adjust the angle with respect to the socket 1 of the drive member 2 separately. Since the elastic pressing member 22 can correspond to the recess 14, the assembling work is convenient. The groove surface of the first annular groove 141 preferably has an arc shape. Thereby, it is possible to effectively prevent the engaging member 221 and the recess 14 from locking each other.

  Further, the housing space 12 is provided with a plurality of engagement recesses 122 extending in the axial direction 11. These engagement protrusions 121 and these engagement recesses 122 are provided so as to intersect with each other along the circumferential direction of the accommodation space 12. The first annular groove 141 extends at the engagement protrusions 121 and the engagement recesses 122. A corner portion 213 is formed between any two adjacent circular arc surface steps 211 of the polygonal ball-shaped head 21. Each corner 213 is pressed against the engagement recess 122.

  In the driving member 2 according to the present embodiment, a working portion 23 and a radial convex edge 24 are integrally formed. The radial convex edge 24 is provided between the working unit 23 and the polygonal ball-shaped head 21. It is possible to assemble a chain case or a tool sleeve to the working unit 23. When the driving member 2 is located at the first position, the radial convex edge 24 is pressed against the back wall of the accommodating space 12, and the driving member 2 cannot swing with respect to the socket 1. When the driving member 2 is located at the second position, the radial convex edge 24 is not pressed against the back wall of the accommodating space 12, and the driving member 2 can swing with respect to the socket 1.

  On the other hand, it is preferable that the second annular groove 15 is provided at one end far from the connection portion 13 of the accommodation space 12. A stop member 16 is detachably accommodated in the second annular groove 15. The stop member 16 according to the present embodiment is a C ring. When the drive member 2 moves to the second position, the stop member 16 locks the polygonal ball-shaped head 21. As a result, the polygonal ball-shaped head 21 cannot be detached from the accommodation space 12.

(Second Embodiment)
Please refer to FIG. 7 and FIG. In the present embodiment, the recess 14A is a perforation. When the drive member 2 is located at the first position, the engagement member 221 of the elastic pressing member 22 is elastically pressed against the perforation. Thereby, like the above embodiment, the drive member 2 cannot arbitrarily move to the second position. Since the other structure is the same as that of the above embodiment, the description is omitted.

  According to the two-stage universal joint according to the present invention, the driving member can be quickly positioned at the first position or the second position by combining the elastic member, the concave portion and the elastic pressing member. Use is very convenient because it does not slide arbitrarily with respect to the socket.

  Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other embodiments conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Socket 2 Drive member 3 Elastic member 11 Axial direction 12 Accommodating space 13 Connection part 14, 14A Concave part 15 Second annular groove 16 Stopping member 21 Polygonal ball-shaped head 22 Elastic pressing member 23 Working part 24 Radial direction convex edge 121 Engagement Protrusion 122 Engagement recess 141 First annular groove 211 Arc surface step 212 Accommodating hole 213 Corner portion 221 Engagement member 222 Spring

Claims (5)

A storage space and a connecting portion are provided along the axial direction, and a plurality of engagement protrusions extending along the axial direction are provided on the back wall of the storage space. On the wall, a socket provided with a recess,
A polygonal ball-shaped head is provided, and the polygonal ball-shaped head is provided with a plurality of arc surface steps, and the polygonal ball-shaped head is inserted into the accommodating space, and the arc-shaped surface steps are provided. Are respectively pressed against the engaging protrusions, and the drive member is capable of sliding the socket between a first position and a second position, and an elastic pressing member is provided on the polygonal ball-shaped head. The elastic pressing member is a driving member that is constantly pressed outward along the radial direction;
An elastic member that is disposed between the bottom of the housing space and the polygonal ball-shaped head, and biases the drive member to the second position;
With
When the driving member is located at the first position, the elastic pressing member is elastically pressed against the recess, and the driving member swings with respect to the socket about the polygonal ball-shaped head. When the driving member is moved to the second position by an external force, the elastic pressing member is detached from the recess, and the driving member is elastically pressed against the elastic member, so that the second position is The two-stage universal joint is characterized in that the two-stage universal joint can be swung with respect to the socket with the polygonal ball-shaped head as an axis.   The elastic pressing member includes an engaging member and a spring, the polygonal ball-shaped head is provided with a receiving hole, and the engaging member is slidably provided in the receiving hole, The spring is disposed between the bottom of the receiving hole and the engaging member, and elastically presses both of them, whereby the engaging member is regulated in the receiving hole and is always pressed outward. The two-stage universal joint according to claim 1, wherein the recess is a first annular groove provided in a back wall of the housing space.   The groove surface of the first annular groove has an arc shape, and the housing space is provided with a plurality of engagement dents extending along the axial direction, and the engagement protrusions and the engagement dents are provided. Are provided so as to intersect with each other along the circumferential direction of the accommodating space, and the first annular groove extends between the engagement protrusion and the engagement recess, and the polygonal ball-shaped head has an arbitrary shape. The two-stage universal joint according to claim 2, wherein corner portions are formed between two adjacent arc surface steps, and each corner portion is pressed against the engagement recess.   A working portion and a radial convex edge are integrally formed on the driving member, and the radial convex edge is provided between the working portion and the polygonal ball-shaped head, and the driving member Is located at the first position, the radial convex edge is pressed against the back wall of the accommodation space, and when the drive member is located at the second position, the radial convex edge is the accommodation position. The two-stage universal joint according to claim 1, wherein the universal joint is not pressed against the back wall of the space.   A second annular groove is provided at one end of the accommodation space far from the connection portion, and a stop member is detachably provided in the second annular groove, and the driving member is in the second position. The stopper member is pressed against and locked to the polygonal ball-shaped head, so that the polygonal ball-shaped head cannot be detached from the accommodating space, and the elastic member is 2. The two-stage universal joint according to claim 1, wherein the two-stage universal joint according to claim 1, wherein the diameter is gradually reduced from the connection portion to the accommodation space and is pressed against an end surface facing the connection portion of the polygonal ball-shaped head.

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