阅读说明：本技术 一种铰链调节构造 (Hinge adjusting structure ) 是由 胡旭升 于 2021-08-10 设计创作，主要内容包括：一种铰链调节构造,包括调节机构及锁紧机构。调节机构具有内调节板,外调节板以及设置在两者之间的调节销,所述调节销配合成型在内、外调节板之一上的横向调节长孔及竖向调节长孔,推动所述内、外调节板相对横向或竖向移动。锁紧机构具有带有锁紧螺孔的锁紧板及配合所述锁紧螺孔将内、外调节板及锁紧板固定锁紧在一起的锁紧螺钉。其中,所述外调节板上成型有锁紧光圆孔,在所述锁紧螺孔与所述锁紧光圆孔之间的所述内调节板具有避让所述锁紧螺钉相对所述内调节板移动的调节避让空间。锁紧光圆孔与所述锁紧螺孔的配合使得锁紧操作不会破坏调节的结果,而设置调节避让空间使得设置锁紧光圆孔成为可能。(A hinge adjusting structure comprises an adjusting mechanism and a locking mechanism. Adjustment mechanism has interior regulating plate, outer regulating plate and sets up the adjusting pin between the two, horizontal regulation slot hole and vertical regulation slot hole on one of inside and outside regulating plate including the adjusting pin cooperation shaping promote inside and outside regulating plate is horizontal or vertical movement relatively. The locking mechanism is provided with a locking plate with a locking screw hole and a locking screw which is matched with the locking screw hole to fixedly lock the inner adjusting plate, the outer adjusting plate and the locking plate together. The locking screw hole is formed in the outer adjusting plate, the locking light round hole is formed in the outer adjusting plate, the inner adjusting plate between the locking screw hole and the locking light round hole is provided with an adjusting avoiding space for avoiding the locking screw to move relative to the inner adjusting plate. The locking light round hole is matched with the locking screw hole, so that the locking operation cannot damage the adjusting result, and the adjusting avoiding space is arranged to enable the locking light round hole to be arranged.)

1. A hinge adjusting structure comprises

The adjusting mechanism (1) is provided with an inner adjusting plate (3), an outer adjusting plate (4) and an adjusting pin (5), one of the inner adjusting plate (3) and the outer adjusting plate (4) is fixedly connected with the fan frame, and the other of the inner adjusting plate and the outer adjusting plate is connected with the hinge shaft; at least one transverse adjusting long hole (9) and at least one vertical adjusting long hole (10) are formed in one of the inner adjusting plate (3) and the outer adjusting plate (4), and adjusting round holes (11) corresponding to the transverse adjusting long holes (9) and the vertical adjusting long holes (10) are formed in the other one of the inner adjusting plate and the outer adjusting plate; the adjusting pin (5) is composed of a pin column (12) and an eccentric part, an adjusting structure (14) suitable for adjusting an adjusting tool is formed at the end part corresponding to the pin column (12), the pin column (12) is correspondingly and rotatably arranged in each adjusting round hole (11), the eccentric part of each adjusting pin (5) is respectively positioned in each transverse adjusting long hole (9) and each vertical adjusting long hole (10) and is matched with the transverse adjusting long holes to push the inner adjusting plate (3) and the outer adjusting plate (4) to move transversely or vertically;

the locking mechanism (2) is provided with a locking plate (16) with a locking screw hole (15) and a locking screw (17) which is matched with the locking screw hole (15) to fix and lock the inner adjusting plate (3), the outer adjusting plate (4) and the locking plate (16) together;

the method is characterized in that:

outer adjusting plate (4) go up the shaping and have locking light round hole (18 locking screw hole (15) with between locking light round hole (18) interior adjusting plate (3) have dodge locking screw (17) are relative interior adjusting plate (3) move the regulation dodge the space.

2. The hinge adjustment construction according to claim 1, characterized in that the adjustment clearance space is an adjustment clearance hole (19) formed on the inner adjustment plate (3).

3. The hinge adjustment construction according to claim 2, characterized in that the adjustment relief holes (19) are formed independently for each locking screw (17).

4. The hinge adjustment construction according to any one of claims 1-3, characterized in that two of the long transverse adjustment holes (9) and one of the long vertical adjustment holes (10) are arranged vertically, three in total, with the long vertical adjustment hole (10) arranged in the middle and the two long transverse adjustment holes (9) arranged on both sides.

5. The hinge adjustment construction according to claim 4, characterized in that the transverse adjustment long hole (9) and the vertical adjustment long hole (10) are provided on the outer adjustment plate (4).

6. The hinge adjustment construction according to claim 5, wherein the locking light round holes (18) are four vertically arranged, and the long transverse adjustment holes (9) and the long vertical adjustment holes (10) are respectively provided between adjacent two of the locking light round holes (18).

7. The hinge adjustment structure according to any one of claims 1 to 6, wherein the adjustment round hole (11) is a screw hole, the pin (12) is a screw rod fitting into the screw hole, and a post end escape space is formed in the lock plate (16) corresponding to the pin (12).

8. The hinge adjustment structure according to any one of claims 1 to 6, wherein the adjustment round hole (11) is a smooth hole, and the locking plate (16) is formed with a column end avoiding space corresponding to the pin (12), the column end avoiding space being adapted to accommodate a disengagement preventing member mounted on an end portion of the pin (12) to prevent the pin (12) from coming out of the adjustment round hole (11), the disengagement preventing member being rotationally moved with the pin (12) in the column end avoiding space.

9. The hinge adjustment construction according to claim 7 or 8, characterized in that the post-end relief space is a post-end relief hole (20) formed in the locking plate (16).

10. The hinge adjustment construction according to claim 9, wherein the post-end relief holes (20) are formed independently for each of the pins (12).

11. Hinge adjustment construction according to any of claims 1-10, characterized in that the eccentric in the adjustment pin (5) is an eccentric disc (13) arranged eccentrically on the pin cylinder (12).

12. Hinge adjustment construction according to any of claims 1-11, characterized in that the adjustment structure (14) shaped at the end of the pin (12) is a socket head for an external socket head wrench.

13. Hinge adjustment construction according to any of claims 1-12, characterized in that the inner adjustment plate (3) is fixedly connected to the fan frame, whereas the outer adjustment plate (4) is connected to the hinge axis; the inner adjusting plate (3) is bent towards one side of the outer adjusting plate (4) to form a short vertical edge (6) by being vertical to the edges of two ends of the hinge shaft, the end part of the short vertical edge (6) is bent to form a fixing plane in a Z shape, and a fixing hole (7) for fixing with a fan frame is formed in the fixing plane; a long vertical edge (8) is arranged between the two short vertical edges (6) on the side opposite to the hinge shaft.

Technical Field

The invention relates to the technical field of hinges, in particular to a hinge adjusting structure.

Background

In the installation of the door and window, the installation between the sash body and the frame body often cannot be well in place due to the influence of factors such as the deformation generated by the reserved space on the installation wall body and the transportation and installation operation, for example, the sash body and the frame body are mutually inclined or generate large gaps. For this reason, some hinge adjusting mechanisms capable of adjusting the installation position of the fan body and the frame body have been proposed in the prior art.

For example, chinese patent document CN101839100A discloses a three-direction dimmable hinge, which comprises a hinge, a hinge coupling block, an adjusting block, an eccentric pin and a fastening screw. Through the rotation of the two eccentric pins, eccentric motion is generated around the round holes C1 and E1 respectively, the flat head parts of the two eccentric pins rotate in the strip-shaped holes C2 and E2 of the hinge respectively, so that the hinge and the hinge connecting block generate relative motion in the X direction and the Y direction, namely the adjustment in the X, Y direction is realized. The hinge can freely adjust the gaps of the door leaf in all directions, and the consistency of the gaps of the door leaf and the door frame in all directions is ensured. The hinge is approximately L-shaped, a hinge pin hole F is formed in one bending edge of the hinge, and a conventional hinge pin penetrates into the hinge pin hole F, so that the hinge can rotate around the hinge pin. The two ends of the other bending side of the L shape are respectively provided with a second strip-shaped hole A2, and the middle part of the second strip-shaped hole A2 is provided with a first round hole D1. The strip-shaped hole C2 and the strip-shaped hole E2 are between the two second strip-shaped holes A2 and the first round hole D1. The long axes of the two strip holes a2 and E2 are parallel to the length direction of the hinge (i.e. Y direction), and the long axis of the strip hole C2 is perpendicular to the strip hole E2 (i.e. along X direction). The hinge connecting block 5 is L-shaped, and two strip-shaped holes A1, four threaded holes B1 and two round holes C1 are arranged on one bent edge. The long axes of the two strip-shaped holes A1 are perpendicular to the strip-shaped holes A2 of the hinge.

Because the strip-shaped holes A1 and A2 which extend perpendicular to each other need to be arranged on the hinge connecting block and the hinge in the prior art, wherein the strip-shaped hole A1 is abutted against the screw cap of the fastening screw, when the fastening is carried out after the adjustment, the friction between the screw cap and the hinge connecting block often causes the fastening screw to displace along the length direction in the strip-shaped hole A1, so that the original adjustment fails. That is, it is difficult to achieve the desired adjustment requirements in use. Further, since the strip-shaped holes a1 and a2 are both holes for adjustment, the machining accuracy requirements are relatively high, and the accuracy requirements of the machining dies for machining these holes correspondingly are also high. Therefore, the processing cost and the processing difficulty of the prior art are relatively high.

Disclosure of Invention

Therefore, the adjustable hinge disclosed by the invention aims to solve the technical problems of difficulty in adjustment, high processing cost and high processing difficulty of the adjustable hinge in the prior art. Thus, the hinge adjusting structure is simple to process and low in cost.

In order to solve the above technical problem, the present invention provides a hinge adjusting structure including:

the adjusting mechanism is provided with an inner adjusting plate, an outer adjusting plate and an adjusting pin, one of the inner adjusting plate and the outer adjusting plate is fixedly connected with the fan frame, and the other of the inner adjusting plate and the outer adjusting plate is connected with the hinge shaft; at least one transverse adjusting long hole and at least one vertical adjusting long hole are formed in one of the inner adjusting plate and the outer adjusting plate, and adjusting round holes corresponding to the transverse adjusting long holes and the vertical adjusting long holes are formed in the other one of the inner adjusting plate and the outer adjusting plate; the adjusting pin is composed of a pin column and an eccentric part, an adjusting structure suitable for adjusting a tool is formed at the end part corresponding to the pin column, wherein the pin column is correspondingly and rotatably arranged in each adjusting round hole, and the eccentric part of each adjusting pin is respectively arranged in each transverse adjusting long hole and each vertical adjusting long hole and is matched with the transverse adjusting long holes to push the inner adjusting plate and the outer adjusting plate to move transversely or vertically;

the locking mechanism is provided with a locking plate with a locking screw hole and a locking screw which is matched with the locking screw hole to lock the inner adjusting plate, and the outer adjusting plate and the locking plate are fixedly locked together;

the outer adjusting plate is formed with a locking light round hole, and the inner adjusting plate between the locking screw hole and the locking light round hole is provided with an adjusting avoiding space for avoiding the locking screw to move relative to the inner adjusting plate.

Further, the adjusting and avoiding space is formed in an adjusting and avoiding hole in the inner adjusting plate.

Furthermore, the adjusting avoidance holes are formed independently corresponding to the locking screws.

Further, two horizontal adjustment slot holes and one vertical adjustment slot hole are vertically arranged, and the number of the horizontal adjustment slot holes is three, wherein the vertical adjustment slot hole is arranged in the middle, and the two horizontal adjustment slot holes are arranged on two sides.

Further, the lateral adjustment long hole and the vertical adjustment long hole are provided on the outer adjustment plate.

Furthermore, the number of the locking light round holes is four, the locking light round holes are vertically arranged, and the transverse adjusting long holes and the vertical adjusting long holes are respectively arranged between every two adjacent locking light round holes.

Furthermore, the adjusting round hole is a screw hole, the pin column is a screw rod matched with the screw hole, and a column end avoiding space is formed in the locking plate corresponding to the pin column.

Furthermore, the adjusting round hole is a unthreaded hole, a column end avoiding space is formed on the locking plate corresponding to the pin column, the column end avoiding space is suitable for accommodating a separation stopping piece which is arranged at the end part of the pin column and used for avoiding the pin column from separating from the adjusting round hole, and the separation stopping piece moves along with the pin column in the column end avoiding space in a rotating mode.

Furthermore, the column end avoiding space is a column end avoiding hole formed in the locking plate.

Furthermore, the column end avoiding hole is formed corresponding to each pin column independently.

Further, the eccentric portion of the adjustment pin is an eccentric disc eccentrically disposed on the pin post.

Further, the adjusting structure formed at the end of the pin is a hexagon socket hole matched with an external hexagon wrench.

Furthermore, the inner adjusting plate is fixedly connected with the fan frame, and the outer adjusting plate is connected with the hinge shaft; the edge of two ends of the inner adjusting plate, which is vertical to the hinge shaft, is bent towards one side of the outer adjusting plate to form a short vertical edge, the end part of the short vertical edge is Z-shaped and then is bent to form a fixed plane, and a fixed hole for fixing the fan frame is formed in the fixed plane; and a long vertical edge is arranged between the two short vertical edges on the side opposite to the hinged shaft.

The technical scheme of the invention has the following advantages:

1. according to the hinge adjusting structure provided by the invention, the outer adjusting plate is formed with the locking light round hole, and the inner adjusting plate between the locking screw hole and the locking light round hole is provided with the adjusting avoiding space for avoiding the locking screw to move relative to the inner adjusting plate. The locking smooth round hole is matched with the locking screw, so that relative movement cannot be generated between the locking screw and the outer adjusting plate when the locking is carried out, and the adjusting effect is guaranteed. Meanwhile, the processing mould of the inner and outer adjusting plates is greatly simplified, the processing cost is saved, and the corresponding inner or outer adjusting plates are easier to process.

2. The structure of dodging the hole is adopted in the space to the regulation for interior regulating plate has certain structural strength, can tightly make outer regulating plate and locking plate hug closely interior regulating plate and press from both sides tightly when locking screw locks, makes the clamp force more stable.

3. The transverse adjusting long holes and the vertical adjusting long holes are vertically arranged in two vertical directions and one horizontal direction, the transverse adjusting long holes are arranged in the middle, and the vertical adjusting long holes are arranged on two sides. The problem that the inner and outer adjusting plates rotate relatively around the adjusting pin in the vertical adjusting long hole due to the transverse adjustment is easier to correct.

4. The transverse adjusting long hole and the vertical adjusting long hole are arranged on the outer adjusting plate. The adjustment is more visual and convenient.

5. The locking light round holes are four in vertical arrangement, and the transverse adjusting long holes and the vertical adjusting long holes are respectively arranged between every two adjacent locking light round holes. So that the locking force is more uniform.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below.

FIG. 1 is an exploded perspective view of one embodiment of a hinge adjustment configuration of the present invention;

FIG. 2 is an assembled front view of the adjustment mechanism of the embodiment of FIG. 1;

FIG. 3 is an exploded perspective view of the adjustment mechanism of the embodiment of FIG. 1;

FIG. 4 is a perspective view of an adjustment pin of the embodiment of FIG. 1;

FIG. 5 is an exploded perspective view of the locking mechanism of the embodiment of FIG. 1;

FIG. 6 is a schematic perspective view of an alternate embodiment of the embodiment of FIG. 1;

FIG. 7 is a schematic perspective view of another alternate embodiment of the embodiment shown in FIG. 1;

description of reference numerals:

1-adjusting mechanism, 2-locking mechanism, 3-inner adjusting plate, 4-outer adjusting plate, 5-adjusting pin, 6-short vertical edge, 7-fixing hole, 8-long vertical edge, 9-transverse adjusting long hole, 10-vertical adjusting long hole, 11-adjusting round hole, 12-pin column, 13-eccentric disc, 14-adjusting structure, 15-locking screw hole, 16-locking plate, 17-locking screw, 18-locking light round hole, 19-adjusting avoiding hole, 20-column end avoiding hole and 21-bolt.

Detailed Description

The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings.

Referring to fig. 1 and 2, the present invention provides a hinge adjusting structure including an adjusting mechanism 1 and a locking mechanism 2 provided on a fixing portion on one side of a hinge. Therein, referring to fig. 3, the adjusting mechanism 1 has an inner adjusting plate 3, an outer adjusting plate 4 and an adjusting pin 5. The inner adjusting plate 3 is fixedly connected with the fan frame, and the outer adjusting plate 4 is connected with a hinge shaft (not shown in the drawing, and a shaft sleeve sleeved with the hinge shaft is shown); the edge of two ends of the inner adjusting plate 3, which is perpendicular to the hinge axis, is provided with a short vertical edge 6 which is bent towards one side of the outer adjusting plate 4, the end part of the short vertical edge 6 is Z-shaped and then bent to form a fixed plane, and a fixed hole 7 which is used for being fixed with the fan frame is formed on the fixed plane. A long vertical edge 8 is arranged between the two short vertical edges 6 at one side of the inner adjusting plate 3 opposite to the hinge shaft. Two transverse adjusting long holes 9 and one vertical adjusting long hole 10 are vertically arranged and formed in the outer adjusting plate 4, wherein the vertical adjusting long hole 10 is arranged in the middle, and the two transverse adjusting long holes 9 are arranged on two sides. And adjusting round holes 11 corresponding to the transverse adjusting long holes 9 and the vertical adjusting long holes 10 are formed in the inner adjusting plate 3. Referring to fig. 4, the adjusting pin 5 is composed of a pin 12 and an eccentric disc 13 as an eccentric portion, and a hexagon socket as an adjusting structure 14 adapted to be adjusted by an external hexagon wrench as an adjusting tool is formed at an end portion corresponding to the pin 12, and in this embodiment, the adjusting structure 14 is provided at an end having the eccentric disc 13. The pin 12 is rotatably disposed in each of the adjusting circular holes 11, the eccentric disc 13 of each of the adjusting pins 5 is respectively disposed in each of the transverse adjusting long holes 9 and the vertical adjusting long holes 10, and each of the transverse adjusting long holes 9 and the vertical adjusting long holes 10 has the same dimension as the eccentric disc 13 in the adjusting direction, that is, referring to fig. 2, the transverse adjusting hole has the same width as the diameter of the eccentric nut in the transverse direction, and the vertical adjusting hole has the same width as the diameter of the eccentric nut in the vertical direction. And the eccentric disc 13 of each adjusting pin 5 is matched with the corresponding transverse adjusting long hole 9 and vertical adjusting long hole 10 to push the inner adjusting plate 3 and the outer adjusting plate 4 to move transversely or vertically relatively. Referring to fig. 5, the locking mechanism 2 has a locking plate 16 with four locking screw holes 15 arranged vertically and a locking screw 17 for fixedly locking the inner adjusting plate 3, the outer adjusting plate 4 and the locking plate 16 together in cooperation with the locking screw holes 15. Four locking light round holes 18 (only two of them can be seen due to the shielding of the hinge shaft sleeve in the figure) for the locking screws 17 to pass are formed in the outer adjusting plate 4 and the locking plate 16 at the positions corresponding to the locking screw holes 15, and the inner adjusting plate 3 between the locking screw holes 15 and the locking light round holes 18 is provided with an adjusting avoiding space for avoiding the locking screws 17 relative to the inner adjusting plate 3. In this embodiment, the adjustment avoiding space is an adjustment avoiding hole 19 formed on the inner adjusting plate 3. And the adjusting avoiding hole 19 is a square hole which is formed independently corresponding to each locking screw 17. In this embodiment, the number of the locking optical circular holes 18 is four, and the horizontal adjusting long hole 9 and the vertical adjusting long hole 10 are respectively disposed between two adjacent locking optical circular holes 18. In this embodiment, adjust round hole 11 and be the screw, round pin post 12 is the screw rod of this screw of cooperation, correspond on the locking plate 16 round pin post 12 shaping has the column end of regarding as the column end and dodges the space and dodge hole 20, and is same, column end dodges hole 20 for corresponding each respectively round pin post 12 is the fashioned quad slit independently separately.

Refer to fig. 1 and show, will outer adjusting plate 4 interior adjusting plate 3 reaches locking plate 16 superposes in proper order, will locking screw 17 passes on outer adjusting plate 4 locking light round hole 18, and pass interior adjusting plate 3 is gone up to be regarded as the square hole of hole 19 is dodged in the regulation, will finally locking screw 17's screw in correspond on the locking plate 16 in the locking screw hole 15 locking screw 17's fastening force effect down, makes locking plate 16 with outer adjusting plate 4 is right interior adjusting plate 3 presss from both sides the fastening. Each adjusting pin 5 respectively passes through the transverse adjusting long hole 9 or the vertical adjusting long hole 10 formed in the outer adjusting plate 4, the eccentric disc 13 serving as an eccentric part of the adjusting pin 5 is sunk into the transverse adjusting long hole 9 or the vertical adjusting long hole 10, and the threads on the pin column 12 of the adjusting pin 5 are correspondingly screwed into the adjusting round hole 11 with threads of the inner adjusting plate 3. The gap to be adjusted between the fan frames is actually the up-down or left-right position of the outer adjusting plate 4 relative to the inner adjusting plate 3. At this time, in this embodiment, it is required to slightly loosen each locking screw 17 by using an external hexagonal wrench as a tool, and then rotate the corresponding adjusting pin 5 by using an external hexagonal wrench as a tool (the tool for locking and adjusting may be the same tool) according to the adjustment requirement of each gap, when rotating the adjusting pin 5, since the pin 12 is radially constrained by the adjusting circular hole 11 formed on the inner adjusting plate 3 and cannot move in the radial direction, the eccentric disc 13 fixed on the pin 12 is rotated differently from the distance from each different portion of the edge thereof to the rotation axis of the pin 12, so that when the different portion of the edge of the eccentric disc 13 is contacted with the inner edge of the horizontal adjusting long hole 9 or the vertical adjusting long hole 10 formed on the outer adjusting plate 4 during the rotation, the outer adjustment plate 4 will be pushed to move relatively with respect to the inner adjustment plate 3, see fig. 2, and the adjustment function will be achieved. After the position is properly adjusted, the whole adjusting process is completed by screwing each locking screw 17 again with a tool. Although the adjusting pin 5 is installed in the adjusting circular hole 11 through a thread, as long as the axial moving distance of the eccentric disc 13 relative to the adjusting circular hole 11 is ensured to be smaller than the distance of the eccentric disc 13 moving out of the thickness range of the outer adjusting plate 4, the adjusting requirement can still be met. This only needs to be met with appropriate considerations in the design of the thread. The locking plate 16 is formed with the square column end avoidance hole 20 as a column end avoidance space corresponding to the pin column 12, so that the pin column 12 of the adjusting pin 5 has more telescopic space. In the adjustment process, because locking screw 17 is in the shaping all the time and is in conduct on the interior regulating plate 3 in adjusting the square hole of dodging hole 19, and the yardstick size in this square hole is enough to satisfy outer regulating plate 4 is relative in the relative movement in-process of interior regulating plate 3, make adjust the edge of dodging hole 19 not with locking screw 17 produces the motion interference, is in like this supply on the outer regulating plate 4 locking screw 17 passes locking screw 15 only need establish into with locking screw 17's the circular unthreaded hole of pole assorted. Therefore, when the position is adjusted properly, in the process of screwing the locking screw 17 by a tool again, the locking screw 17 is restrained by the locking screw hole 15 formed on the outer adjusting plate 4, and the corresponding movement of the locking screw 17 relative to the outer adjusting plate 4 in the vertical or horizontal direction cannot be generated, so that the accuracy of the adjustment result is ensured.

In the above embodiment, as shown in fig. 6, in the case where the pin 12 is short, the column end escape space may not be provided in the lock plate 16.

Referring to fig. 7, the locking mechanism 2 in the above embodiment may be replaced by that the adjusting circular hole 11 is a unthreaded hole, a column end avoiding hole 20 serving as a column end avoiding space is formed in the locking plate 16 corresponding to the pin 12, and the column end avoiding hole 20 is formed independently corresponding to each pin 12. And the column end avoiding space is suitable for accommodating a bolt 21 which is arranged at the end part of the pin column 12 and used for preventing the pin column 12 from falling out of the adjusting round hole 11 and is used as a stopping part and penetrates through a small hole formed at the end part of the pin column 12, and the bolt 21 rotates and moves along with the pin column 12 in the column end avoiding space. Alternatively, the anti-slip means may be replaced by a nut threaded onto a thread formed at the end of the pin 12, or by an upset end of the pin 12.

In an alternative form of the above embodiment, the outer adjusting plate 4 is used for being fixedly connected with the fan frame, and the inner adjusting plate 3 is connected with the hinge shaft; at least one transverse adjusting long hole 9 and at least one vertical adjusting long hole 10 are formed in the inner adjusting plate 3, and the adjusting round hole 11 corresponding to the transverse adjusting long hole 9 and the vertical adjusting long hole 10 is formed in the outer adjusting plate 4. In this embodiment, need will outer adjusting plate 4 inner adjusting plate 3 reaches locking plate 16 coincide in proper order the in-process, will earlier eccentric portion in the adjusting pin 5 is put into the fashioned on the inner adjusting plate 3 horizontal regulation slot hole 9 with in the vertical regulation slot hole 10, make on the adjusting pin 5 round pin post 12 passes the fashioned on the outer adjusting plate 4 adjust round hole 11, make outer adjusting plate 4 with inner adjusting plate 3 superposes. In this embodiment, the knob structure is disposed on an end of the pin 12 remote from the eccentric portion.

The adjusting avoiding frame and the column end avoiding hole 20 in the above embodiments may be replaced by circular holes, or may be a plurality of locking screws 17 or a plurality of adjusting pins 5 sharing a long hole, or other shaped space, such as a partially open through space.

The adjustment structure 14 in the above-described preferred embodiment may alternatively be formed with a straight or cross driver recess at the end corresponding to the pin 12 adapted to cooperate with a straight or cross driver as an adjustment tool.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.