WO2010027056A1 - ジョイントユニット - Google Patents
ジョイントユニット Download PDFInfo
- Publication number
- WO2010027056A1 WO2010027056A1 PCT/JP2009/065518 JP2009065518W WO2010027056A1 WO 2010027056 A1 WO2010027056 A1 WO 2010027056A1 JP 2009065518 W JP2009065518 W JP 2009065518W WO 2010027056 A1 WO2010027056 A1 WO 2010027056A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressing body
- pressing
- holder
- case
- clamp
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
- F16C11/103—Arrangements for locking frictionally clamped
- F16C11/106—Arrangements for locking frictionally clamped for ball joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
- F16M11/14—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction with ball-joint
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
- F16M11/2035—Undercarriages with or without wheels comprising means allowing pivoting adjustment in more than one direction
- F16M11/2078—Undercarriages with or without wheels comprising means allowing pivoting adjustment in more than one direction with ball-joint
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M2200/00—Details of stands or supports
- F16M2200/02—Locking means
- F16M2200/021—Locking means for rotational movement
- F16M2200/022—Locking means for rotational movement by friction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32008—Plural distinct articulation axes
- Y10T403/32032—Plural ball and socket
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32254—Lockable at fixed position
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32254—Lockable at fixed position
- Y10T403/32262—At selected angle
- Y10T403/32311—Ball and socket
Definitions
- the present invention includes a holder, an arm having a joint portion accommodated in the holder, and a lock mechanism that fixes the arm at an arbitrary rotation angle by pressing the joint portion against the inner surface of the holder.
- a lock mechanism that fixes the arm at an arbitrary rotation angle by pressing the joint portion against the inner surface of the holder.
- Patent Document 1 related to the joint unit configured as described above, and there is a technique described in Patent Document 2 related to pressure welding.
- a ball head 21 formed on a base portion 16 of a ball joint is accommodated in a housing 17 in a state of retaining, and a neck portion 22 formed integrally with the ball head 21 protrudes outside the housing 17. Furthermore, the pressure from the screw rod 19 provided in the holding part 11 is transmitted from the attachment 18 inside the housing 17 to the ball head 21, and the ball head 21 is pressed against the inner surface of the housing 17.
- the structure which can fix arbitrarily the rotation angle of the base 16 with respect to the housing 17 is shown.
- Patent Literature 2 three grasping portions 11A, 11B, and 11C that abut the cylindrical outer peripheral surface 101 of the grasped object 100 and grasp the grasped object 100 by deforming in the center direction of the grasped object 100 are disclosed.
- 23A and 22B, a configuration in which a ball 26 is disposed between the cylindrical member 23A and the grasping portion 11A, and a male screw member 43 that causes the pressure applied by the operation to the first member 21 with the hexagon wrench 40 is provided. It is shown.
- the second member 22A and the second member 22B are accommodated in the bent member accommodation hole 33 in a bent state, and the pressure from the male screw member 43 is applied to the first member by rotating the male screw member 43. 21, the second member 22A and the cylindrical member 23 are displaced by the force from the first member 21, and as a result, the three grasping portions 11A, 11B, and 11C are pressed against the grasped object 100. The point to grasp is indicated.
- JP 2004-52911 A (paragraph numbers [0010 to 0024], FIGS. 3 and 4) JP 2006-123105 A (paragraph numbers [0017 to 0031], FIGS. 1 to 3)
- a locking screw body is arranged in a posture orthogonal to the shaft core, and a slide member such as a wedge shape is used to convert the force from the screw body into a direction along the shaft core and transmit it to the joint portion. Conceivable.
- a slide member such as a wedge shape
- An object of the present invention is to rationally configure a joint unit that does not cause an increase in the size of a mechanism for fixing the rotation angle of an arm with respect to a holder and a malfunction.
- a feature of the present invention is that a holder, an arm having a joint portion accommodated in the holder, and a lock mechanism for fixing the arm at an arbitrary rotation angle by pressing the joint portion against the inner surface of the holder.
- a joint unit comprising: The lock mechanism includes a first pressing body having a circular cross-sectional shape in which a pressing force from a clamp acts in the holder, and a second pressing body having a circular cross-sectional shape to which the pressing force is transmitted by contact with the first pressing body, The pressure block includes a pressure block that causes the force from the first pressing body or the second pressing body to act on the joint portion and press-contact the inner surface of the holder.
- the cross-sectional shapes of the first pressing body and the second pressing body are circular, it is possible to transmit the pressing force through the outer surfaces that are circular, and each of them is applied even when the pressing force is applied. Each of them easily rotates even when the pressing force is released. Therefore, a joint unit that does not cause a malfunction of the mechanism for fixing the rotation angle of the arm with respect to the holder is configured.
- the present invention includes a cylindrical case in which the pressure block is movably accommodated in the direction of the axis, and an internal space for accommodating the first pressing body and the second pressing body is formed,
- the clamp has a structure in which a bolt that is screwed into a female screw portion formed in the case is provided with a rotation operation portion, and the tip of the bolt of the clamp is in a state where it matches the inner wall surface of the case. You may set so that the relative positional relationship of a 1st press body and a 2nd press body may be maintained.
- the present invention provides the dimensions of the internal space in a direction perpendicular to the axis, the cross-sectional dimension of the first pressing body, the cross-sectional dimension of the second pressing body, and the inner space side surface of the pressure block.
- the relative positional relationship between the first pressing body and the second pressing body may be maintained by setting the dimension to the surface facing in the direction of the core. According to this, the first pressing body and the second pressing body are in contact with each other in the inner space of the holder, and the first pressing body and the second pressing body are in contact with each other, so that free movement is restricted and the first pressing body and It becomes possible to maintain a relative positional relationship with the second pressing body.
- the present invention includes a first holding member that holds the first pressing body and a second holding member that holds the second pressing body, and a direction in which the first pressing body and the second pressing body are pressed against each other.
- a pressing force from the clamp may be applied to any one of the first holding member and the second holding member. According to this, since the first holding member and the second holding member are relatively displaced by the pressing force from the clamp, the pressing force from one of the first pressing body and the second pressing body acts on the pressure block.
- the holder and the arm can be fixed.
- a measuring instrument is configured by connecting a base unit B supported by a surface plate or a table, a joint unit J, and a dial gauge type gauge unit G in series.
- This measuring instrument first sets the relative positional relationship between the base unit B and the gauge unit G in a state where the base unit B is attracted and fixed to the iron surface plate or table by the magnetic force of the magnet. Thereafter, the relative position between the base unit B and the gauge unit G is fixed by the joint unit J. Then, the end of the contact 4 of the gauge unit G is brought into contact with the outer surface of the measurement target such as a work or tool supported on a surface plate or table via a jig or the like, and the measured value is read from the pointer 5A of the gauge unit G. Is realized.
- the base unit B is provided with a handle 2 on the outer surface of the housing 1, and the position of a magnet (permanent magnet, not shown) inside the housing 1 is changed by rotating the handle 2 and is attracted to an iron table. It is configured to be switchable between a fixed state and a state in which suction is released.
- the gauge unit G includes a gauge housing 3 supported by the joint unit J via a buffer structure, an axial contact 4 provided in the gauge housing 3, and a dial display portion 5 formed on the gauge housing 3. It has.
- a spherical body 4A is formed at the outer end portion of the contactor 4, and the displacement amount in the axial direction of the contactor 4 when the spherical body 4A is brought into contact with the measurement object is a mechanical rotation amount of the dial display unit 5.
- a structure given to the pointer 5A is provided.
- the buffer structure has a structure in which a leaf spring portion 8 that is curvedly formed with respect to the block-shaped frame 7 is integrally provided, and an adjustment bolt 9 that is rotated with a grip 9A is screwed to the frame 7. ing.
- the initial elastic deformation amount is set by bringing the tip of the adjustment bolt 9 into contact with the free end side of the leaf spring portion 8 by turning the grip 9A.
- the initial elastic deformation amount is set in the measurement direction by the elastic deformation of the leaf spring portion 8. Create the flexibility of
- the joint unit J includes holders 11 and 12 at both ends of a case 10 made of a cylindrical steel material, and a lock mechanism L at an intermediate portion of the case 10.
- One holder 11 is composed of another member (steel material) rotatably supported by the case 10, and the other holder 12 is formed integrally with the case 10.
- the ball-shaped joint portion 14 at the base end of the arm 13 connected to the base unit B is accommodated in one holder 11, and the ball-shaped joint portion 14 at the base end of the arm 13 connected to the gauge unit G is the other holder 12. Is housed in.
- the arm 13 has a bolt structure in which a thread groove is formed on the outer periphery.
- One arm 13 is screwed into the casing 1 of the base unit B and fixed by a lock nut 13N, and the other arm 13 is fixed to the gauge unit G.
- the frame 7 is screwed and connected and fixed by a lock nut 13N.
- the outer end portions of the holders 11 and 12 are reduced in diameter to form a retaining portion for the joint portion 14, and a holder having a concave surface with a radius equal to the radius of the joint portion 14 is formed inside the outer end portion.
- Inner surfaces 11S and 12S are formed.
- notches 11T and 12T into which the arm 13 fits in a part of the periphery of the opening through which the arm 13 is inserted in the holders 11 and 12 are formed in a posture along the radial direction.
- the notches 11T and 12T It is comprised so that a big rotation angle may be acquired with the attitude
- the case axis X is assumed at the center position of the outer periphery of the case 10 (corresponding to the center position of the inner peripheral surface), and the outer peripheral surface of the portion of the case 10 where the holder 11 is disposed is reduced in diameter. .
- a sleeve 11A integrally formed with the holder 11 is externally fitted to the reduced diameter portion, and an engagement body 15 is disposed between the sleeve 11A and the case 10 to prevent the sleeve 11A from coming off.
- the holder 11 is supported rotatably around the case axis X in a state where the position in the direction of the case axis X is maintained with respect to the case 10.
- the lock mechanism L includes a roller-shaped first pressing body 21 inside the case to which the pressing force from the clamp Lc is transmitted, a roller-shaped second pressing body 22 to which the pressing force from the first pressing body 21 is transmitted, A pressure block 16 on the gauge unit side to which the pressing force from the first pressing body 21 is transmitted, and a pressure block 16 on the base unit side to which the pressing force from the second pressing body 22 is transmitted.
- a plate 23 that supports the second pressing body 22 is fixed to the inner surface of the case 10 at a position facing the clamp Lc inside the case 10 in a fixed state by adhesion or welding technique or engagement between the case 10 and the pin. ing.
- the clamp Lc includes a bolt 18 that is screwed into a female screw portion formed in the case 10 in a posture orthogonal to the case axis X, and a rotation that manually rotates the bolt 18. And a knob 19 as an operation unit.
- the 1st press body 21 and the 2nd press body 22 are shape
- Each of the two pressure blocks 16 is formed into a piston shape entirely using metal or resin, and is fitted inside the case 10 so as to be movable along the case axis X.
- the relative positional relationship between the first pressing body 21 and the second pressing body 22 is maintained even when the bolt 18 of the clamp Lc is set to a position that matches the inner wall surface of the case 10.
- the dimension S of the region in which the first pressing body 21 and the second pressing body 22 are movable in the direction along the case axis X in the internal space of the case 10 and the direction parallel to the axis of the bolt 18 (case
- the dimension H of the region in which the first pressing body 21 and the second pressing body 22 are movable in the direction orthogonal to the axis X and the surface of the plate 23, and the first pressing body 21 and the second pressing body in the lateral direction. 22 is set to the dimension W of the movable area.
- the dimension S is a state in which the pressure acting on the first pressing body 21 from the bolt 18 of the clamp Lc is released in the direction of the case axis X between the surfaces on the inner space side of each of the pair of pressure blocks 16. Distance. Furthermore, since the first pressing body 21 and the second pressing body 22 are constituted by rollers, and the plate 23 is provided in a fixed state on the inner surface of the case 10 as described above, each of them is centered on the case axis X. Inconvenience of rotating inside the case is also eliminated.
- the above-described dimension S is equal to the diameter (2r) of the first pressing body 21 and the second
- the dimensional relationship is set to be smaller than the sum of the diameter (2r) and the pressing body 22 (S ⁇ 4r). Further, the dimensional relationship is set so that the above-described dimension H is smaller than the sum of the diameter (2r) of the first pressing body 21 and the diameter (2r) of the second pressing body 22 (H ⁇ 4r). .
- the length of the region in which the second pressing body 22 can move in the longitudinal direction in a state where the bolt 18 of the clamp Lc coincides with the inner wall surface of the case 10 is the dimension W.
- the state in which the relative positional relationship is maintained is established by a combination of the following states. That is, in a state where the first pressing body 21 is in contact with the inner surface of the case 10 and the movement in the longitudinal direction is restricted, the first pressing body contacts the second pressing body 22 or the pressure block 16 on the gauge unit side. To do. In a state where the second pressing body 22 is in contact with the inner surface of the case 10 and movement in the longitudinal direction is restricted, the second pressing body 22 contacts the first pressing body 21 or the plate 23, or the base unit side In contact with the pressure block 16.
- the second pressing body 22 contacts or approaches the plate 23, and the second pressing body 22 contacts or approaches the pressure block 16 on the base unit side.
- the first pressing body 21 and the second pressing body 22 move so as to go around their outer peripheral surfaces, and the first pressing body 21 and the second pressing body 22 are separated by a distance between the two pressure blocks 16 ( A force is applied to the pressure blocks 16 in contact with each other in the direction in which the distance in the case axis X direction is increased.
- the joint portion 14 to which the pressing force from the pressure block 16 acts is pressed against the holder inner surfaces 11S and 12S, reaches a locked state, and the arm 13 is fixed at an arbitrary rotation angle.
- the holder 11 is prevented from rotating at the case axis X and fixed to the case 10.
- the structure is such that the pressing force from the clamp Lc is transmitted from the first pressing body 21 having a circular cross-sectional shape to the second pressing body 22 having a circular cross-sectional shape, for example, an intermediate member that slides the pressing force from the clamp Lc.
- the structure is such that the pressing force from the clamp Lc is transmitted from the first pressing body 21 having a circular cross-sectional shape to the second pressing body 22 having a circular cross-sectional shape, for example, an intermediate member that slides the pressing force from the clamp Lc.
- the present invention may be configured as follows in addition to the above-described embodiments (in the following other embodiments, the same functions and the same numbers as those in the above embodiments are given to those having the same functions as those in the above embodiments. ing).
- a holder 12 is provided at one end of a cylindrical case 10 and a flat guide surface in a posture orthogonal to the case axis X at the other end. 10G is formed, and an opening 10S is formed on the end side.
- a first holding member 31 On the other end side of the case 10 is disposed a first holding member 31 with which the end surface comes into contact with the guide surface 10G.
- a roller-shaped first member 31 is formed with respect to the recess 31A formed in the first holding member 31. 1 Press body 21 is supported in a state of fitting.
- the first holding member 31 has a screw hole formed coaxially with the operation shaft core Y parallel to the guide surface 10G,
- a ball-shaped joint portion 14 formed at the base end of the arm 13 is accommodated in the holder 12, and a pressure block 16 that applies a pressing force to the joint portion 14 and a second holding member 32 are provided along the case axis X. And can be moved freely.
- a concave portion 32A is formed in the second holding member 32, and is supported in a state in which the roller-like second pressing body 22 is fitted into the concave portion 32A.
- the 1st press body 21 and the 2nd press body 22 are arrange
- the bolt 18 of the clamp Lc of the lock mechanism L is screwed into the screw hole of the first holding member 31 in a state of passing through the case 10.
- the knob 19 of the clamp Lc is manually rotated, the first holding member 31 is displaced upward in the drawing along the operation axis Y while being in sliding contact with the guide surface 10G.
- the first pressing body 21 comes into pressure contact with the second pressing body 22, and the pressing force from the second pressing body 22 sequentially acts on the second holding member 32 and the pressure block 16 along the case axis X.
- the joint portion 14 is pressed against the holder inner surface 12S and reaches a locked state.
- the bolt 18 of the clamp Lc is screwed into the first holding member 31, but the tip of the bolt 18 is pressed against the first holding member 31 to apply a pressing force. May be.
- the bolt 18 of the clamp Lc is screwed to the female screw portion formed in the intermediate portion of the case 10 in a posture orthogonal to the case axis X, and the pressing force from the bolt 18 is received inside the case 10.
- the acting roller-shaped first pressing body 21 is accommodated.
- a second pressing body 22 that contacts the first pressing body 21 is formed on the opposing surfaces of the pair of pressure blocks 16.
- the second pressing body 22 has a shape obtained by removing a part of a roller-shaped member, and is formed into a circular shape with an incomplete cross-sectional shape.
- the first pressing body 21 and the two second pressing bodies 22 are arranged in a positional relationship where they contact each other. Accordingly, when the knob 19 of the clamp Lc is manually rotated, a pressing force is applied to the first pressing body 21 from the tip of the bolt 18 and at the same time, a pair of second contacts that are in contact with the first pressing body 21. A pressing force also acts on the pressing body 22, and as a result of the pressing force from the pair of second pressing bodies 22 acting on the corresponding pressure block 16, the joint portion 14 is pressed against the holder inner surfaces 11S and 12S, and is locked. Reach the state.
- (C) Although the thing of the length equal to the 1st press body 21 and the 2nd press body 22 is used, it differs, for example, the length of the 2nd press body 22 is set longer than the 1st press body 21. You may use the thing of length, and may use balls, such as a steel ball, as the 1st press body 21 and the 2nd press body 22. As shown in FIG.
- the square case 10 having a rectangular cross section may be used.
- the values of the dimension H and the dimension W are equal to the distance of the inner surface of the case 10.
- the balls are arranged along the inner surface of the case 10. There is no inconvenience of rotating around the axis X.
- the joint portion may have a structure that performs two-dimensional rotation instead of a ball shape that enables three-dimensional rotation.
- a structure may be adopted in which a rod-shaped support shaft portion is formed at the base end portion of the arm, the support shaft portion is supported by a holder, and a pressure block is brought into contact with the outer peripheral portion of the support shaft portion to perform locking. .
- the present invention can be applied to all joint units using a lock mechanism that is locked by a pressing force from a clamp.
Abstract
Description
前記ロック機構が、ホルダ内にクランプからの押圧力が作用する断面形状円形の第1押圧体と、この第1押圧体との接触により押圧力が伝えられる断面形状円形の第2押圧体と、第1押圧体又は第2押圧体からの力をジョイント部に作用させホルダ内面に圧接させる圧力ブロックとを備えている点にある。
前記クランプが、前記ケースに形成した雌ネジ部に螺合するボルトに回転操作部を備えた構造を有しており、このクランプのボルトの先端部が前記ケースの内壁面と一致する状態で前記第1押圧体と第2押圧体との相対的な位置関係が維持されるように設定しても良い。
図1及び図2に示すように、定盤やテーブルに支持されるベースユニットBと、ジョイントユニットJと、ダイヤルゲージ型のゲージユニットGとを一連に連結して測定器が構成されている。
本発明は、上記した実施の形態以外に以下のように構成しても良い(以下の別実施形態では前記実施形態と同じ機能を有するものに、前記実施形態と共通の番号、符号を付している)。
Claims (4)
- ホルダと、このホルダに収容されるジョイント部を有するアームと、前記ジョイント部を前記ホルダの内面に圧接させることで前記アームを任意の回動角で固定するロック機構とを備えているジョイントユニットであって、
前記ロック機構が、ホルダ内にクランプからの押圧力が作用する断面形状円形の第1押圧体と、この第1押圧体との接触により押圧力が伝えられる断面形状円形の第2押圧体と、第1押圧体又は第2押圧体からの力をジョイント部に作用させホルダ内面に圧接させる圧力ブロックとを備えているジョイントユニット。 - 前記圧力ブロックを軸芯の方向に移動自在に収容し、かつ、前記第1押圧体と第2押圧体とを収容する内部空間が形成された筒状のケースが備えられると共に、
前記クランプが、前記ケースに形成した雌ネジ部に螺合するボルトに回転操作部を備えた構造を有しており、このクランプのボルトの先端部が前記ケースの内壁面と一致する状態で前記第1押圧体と第2押圧体との相対的な位置関係が維持されるように設定している請求項1記載のジョイントユニット。 - 前記内部空間の前記軸芯と直交する方向での寸法と、第1押圧体の断面寸法と、第2押圧体の断面寸法と、前記圧力ブロックにおける内部空間側の面から前記軸芯の方向で対向する面までの寸法との設定により、前記第1押圧体と第2押圧体との相対的な位置関係が維持されている請求項2記載のジョイントユニット。
- 前記第1押圧体を保持する第1保持部材と、前記第2押圧体を保持する第2保持部材とを備えると共に、前記第1押圧体と第2押圧体とを圧接させる方向に前記第1保持部材と第2保持部材との何れか一方に対して前記クランプからの押圧力を作用させる請求項1記載のジョイントユニット。
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CN200980134762.8A CN102144119B (zh) | 2008-09-05 | 2009-09-04 | 接头单元 |
US13/061,224 US8534951B2 (en) | 2008-09-05 | 2009-09-04 | Joint unit |
EP09811581.9A EP2333393B1 (en) | 2008-09-05 | 2009-09-04 | Joint unit |
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JP2008-228715 | 2008-09-05 | ||
JP2008228715A JP5172551B2 (ja) | 2008-09-05 | 2008-09-05 | ジョイントユニット |
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EP (1) | EP2333393B1 (ja) |
JP (1) | JP5172551B2 (ja) |
KR (1) | KR101590052B1 (ja) |
CN (1) | CN102144119B (ja) |
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JP5172551B2 (ja) | 2013-03-27 |
KR20110083593A (ko) | 2011-07-20 |
JP2010060111A (ja) | 2010-03-18 |
US20110188925A1 (en) | 2011-08-04 |
TW201013084A (en) | 2010-04-01 |
EP2333393B1 (en) | 2013-05-15 |
CN102144119B (zh) | 2014-10-08 |
CN102144119A (zh) | 2011-08-03 |
KR101590052B1 (ko) | 2016-01-29 |
TWI484112B (zh) | 2015-05-11 |
EP2333393A4 (en) | 2011-08-24 |
US8534951B2 (en) | 2013-09-17 |
EP2333393A1 (en) | 2011-06-15 |
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