Left arm corrector

Abstract

The utility model discloses a left arm straightener, which belongs to the field of straighteners and comprises a first concave plate, a second concave plate and an adjusting and fixing mechanism, and after a threaded short rod is inserted into a corresponding adjusting hole according to the length of the left arm of a user, a fastening knob is screwed into the threaded short rod through a second screw hole. When the left arm corrector is used, the adjusting plate can be fixed on the fixing plate, the purpose of adjusting the overall length of the left arm corrector is achieved, after adjustment, the two arc-shaped plates are arranged on the upper arm and the lower arm of the left arm respectively, the elastic bandage is pulled to be connected with the arc-shaped plates through the inserting buckles, and then the left arm corrector can be rapidly worn on the left arm of a user. When a user holds a piano and bends a left arm according to a correct piano holding posture, a rotating rod on a second concave plate rotates in a rotating hole formed in a first concave plate, and after the piano holding posture is ensured to be correct, a screw knob can be rotated to enable a limiting rod to be inserted into a corresponding limiting hole in cooperation with the use of an upper limiting mechanism, so that the user can keep the correct piano holding posture.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of correctors, in particular to a left arm corrector. BACKGROUND

[0002] Violin is a kind of stringed instrument with four strings, and vibration is generated by string and bow friction, and then vibration is conducted to backboard through sound post in resonance box (body), and resonance generated by the parts emits harmonious and bright violin sound.

[0003] In the prior art, the Chinese utility model patent with publication number "CN202093808U" and patent name "left arm corrector for violin performance" discloses a left arm corrector, which is described in the patent as "including support main body supported on the outer side of wrist, the support main body is composed of forearm support part and hand back support part, the forearm support part is provided with connecting belt. When using, the support main body is placed on the outer side of wrist, then the forearm support part is fixed with forearm by connecting belt, and the hand back is restrained by hand back support part, which avoids the problem of "holding violin" phenomenon";

[0004] However, the technical scheme has limitations in actual use, because the violin performer's body is different, and the length, thickness and width of arm are also different, so that the left arm corrector is difficult to wear on the left arm of different users, and the left arm corrector is difficult to adjust after wearing, so that the user cannot present the correct holding angle between the upper arm and the lower arm of the left arm according to the correct posture of holding violin after wearing, so that the left arm of the violin performer cannot be effectively corrected when practicing.

[0005] Therefore, in order to solve the above technical problems, the utility model provides a left arm corrector. UTILITY MODEL CONTENTS

[0006] The main purpose of the utility model is to provide a left arm corrector, which can effectively solve the problems in the background art.

[0007] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0008] A left arm corrector, including a first concave plate and a second concave plate, the second concave plate is movably connected with the first concave plate through rotating rods on both sides of the outer wall of the second concave plate, and the outer wall of the first concave plate is respectively provided with a limiting mechanism, the limiting mechanism includes a fixed block, a screw knob and a limiting rod, the fixed block is fixedly connected on both sides of the outer wall of the first concave plate, the screw knob is movably connected in the first screw hole on the top surface of the fixed block, and the limiting rod is fixedly connected on the bottom end of the screw knob, and the outer side walls of the first concave plate and the second concave plate are respectively provided with an adjusting and fixing mechanism, and the adjusting and fixing mechanism includes a fixed plate, an adjusting plate, an arc-shaped plate, an elastic band and a plug buckle, the outer side walls of the first concave plate and the second concave plate are respectively fixedly connected with the fixed plate, the adjusting plate is fixedly connected with the fixed plate through a fastening knob, the arc-shaped plate is fixedly connected on the outer side end of the adjusting plate, and the elastic band is fixedly connected on one side of the top surface of the arc-shaped plate and fixedly connected with the other side of the top surface of the arc-shaped plate through the plug buckle.

[0009] Preferably, rotating holes are formed on both sides of the inner wall of the notch of the first concave plate, rotating rods are fixedly installed on both sides of the outer wall of the second concave plate, the rotating rods are movably installed in the rotating holes, and a plurality of limiting holes are formed on the outer wall of the rotating rod in a ring array.

[0010] Preferably, the fixed blocks are fixedly installed on both sides of the outer wall of the first concave plate, first screw holes are formed on the top surface of the fixed block, the screw knob is threadedly connected with the first screw hole, a limiting rod is fixedly installed on the bottom end of the screw knob, and the limiting rod is inserted and installed in the limiting hole.

[0011] Preferably, the fixed plates are fixedly installed on the outer side walls of the first concave plate and the second concave plate, respectively, and a plurality of adjusting holes are formed on the top surface of the fixed plate in a transverse array.

[0012] Preferably, a threaded short rod is fixedly installed on the inner side wall part of the bottom surface of the adjusting plate, the threaded short rod is inserted and installed in the adjusting hole, a second screw hole is formed on the top surface of the fastening knob and is threadedly connected with the threaded short rod through the second screw hole.

[0013] Preferably, the arc-shaped plate is fixedly installed on the outer side end wall of the adjusting plate, the elastic band is fixedly installed on one side of the top surface of the arc-shaped plate, and the other end of the elastic band is fixedly installed with the other side of the top surface of the arc-shaped plate through the plug buckle.

[0014] Compared with the prior art, the left arm corrector has the following beneficial effects:

[0015] The utility model discloses a fixing mechanism of adjusting, according to the left arm length of user with threaded short rod inserts into the corresponding adjusting hole, through the second screw hole, fastening knob is spun into threaded short rod, can fix the adjusting plate on the fixed plate, and reach the left arm corrector overall length adjusts the purpose, after adjusting, two arc plates are placed on the upper arm and lower arm of left arm respectively, after pulling elastic bandage and connecting together with arc plate through the insertion buckle, can wear this left arm corrector on the left arm of user quickly, and according to correct posture of holding violin, when bending the left arm, the rotating rod on the second concave plate will rotate in the rotating hole that sets up on the first concave plate, after keeping the posture of holding violin correctly, cooperate the use of upper limit mechanism, can rotate screw knob and make the limiting rod insert into the corresponding limiting hole, in this way, the rotation between the first concave plate and the second concave plate can be limited, and the left arm of user can always keep correct posture of holding violin during the practice, thereby the left arm corrector can be quickly worn on the left arm of different users, not only improve the applicability of left arm corrector, and can effectively correct the posture of holding violin of user, and satisfy the demand of violin player during practice. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the utility model;

[0017] Figure 2 It is the overall structure schematic diagram of the first concave plate and the second concave plate of the utility model;

[0018] Figure 3 It is the A place structure enlarged schematic diagram of the utility model's Figure 2

[0019] Figure 4 It is the structure split schematic diagram of the fixing mechanism of adjusting of the utility model.

[0020] In the drawing: 1, the first concave plate;2, the second concave plate;3, the limiting mechanism;4, the fixing mechanism of adjusting;5, the rotating hole;6, the rotating rod;7, the fixed plate;8, the adjusting hole;9, the limiting hole;10, the fixed block;11, the first screw hole;12, the screw knob;13, the limiting rod;14, the adjusting plate;15, threaded short rod;16, fastening knob;17, the second screw hole;18, arc plate;19, elastic bandage;20, insertion buckle. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0022] For example, Figure 1 - Figure 4 ​As shown, a left arm corrector, comprising a first concave plate 1 and a second concave plate 2, the second concave plate 2 is movably connected with the first concave plate 1 through rotating rods 6 on both sides of the outer wall, and the outer wall of the first concave plate 1 is respectively provided with a limiting mechanism 3, the limiting mechanism 3 comprises a fixed block 10, a screw knob 12 and a limiting rod 13, the fixed block 10 is fixedly connected on both sides of the outer wall of the first concave plate 1, the screw knob 12 is movably connected in the first screw hole 11 on the top surface of the fixed block 10, and the limiting rod 13 is fixedly connected at the bottom end of the screw knob 12, and the outer side walls of the first concave plate 1 and the second concave plate 2 are respectively provided with an adjusting and fixing mechanism 4, and the adjusting and fixing mechanism 4 comprises a fixed plate 7, an adjusting plate 14, an arc plate 18, an elastic band 19 and a plug 20, the outer side walls of the first concave plate 1 and the second concave plate 2 are respectively fixedly connected with the fixed plate 7, the adjusting plate 14 is fixedly connected with the fixed plate 7 through a fastening knob 16, the arc plate 18 is fixedly connected on the outer side end of the adjusting plate 14, and the elastic band 19 is fixedly connected on one side of the top surface of the arc plate 18 and fixedly connected with the other side of the top surface of the arc plate 18 through the plug 20.

[0023] As shown in Figure 2 and Figure 3 the inner wall of the notch of the first concave plate 1 is respectively provided with a rotating hole 5, and the outer wall of the second concave plate 2 is respectively fixedly installed with a rotating rod 6, the rotating rod 6 is movably installed in the rotating hole 5, and a plurality of limiting holes 9 are arranged in an annular array on the outer wall of the rotating rod 6, when the left arm corrector is worn on the left arm of the user, and the left arm of the user is adjusted according to the correct holding posture, the rotating rod 6 on the second concave plate 2 will be in the rotating hole 5 on the first concave plate 1, to ensure that the left arm corrector can change the corresponding angle with the movement of the arm, and the limiting hole 9 on the rotating rod 6 is used to cooperate with the limiting mechanism 3;

[0024] As shown in Figure 3 the outer wall of the first concave plate 1 is respectively fixedly installed with a fixed block 10, and the top surface of the fixed block 10 is provided with a first screw hole 11, the screw knob 12 is threadedly connected with the first screw hole 11, and the bottom end of the screw knob 12 is fixedly installed with a limiting rod 13, the limiting rod 13 is inserted into the limiting hole 9, when the left arm of the user is adjusted to the correct holding posture, the screw knob 12 is rotated to realize the threaded rotation of the screw knob 12 in the first screw hole 11, and the limiting rod 13 is inserted into the corresponding limiting hole 9, to limit the rotation between the first concave plate 1 and the second concave plate 2, and to ensure that the correct holding posture of the left arm of the user will not change when practicing the violin, to achieve the purpose of correcting the holding posture of the left arm;

[0025] As shown in Figure 3As shown in the drawings, the outer side wall of the first concave plate 1 and the second concave plate 2 is respectively fixedly provided with a fixed plate 7, and the top surface of the fixed plate 7 is provided with a plurality of adjusting holes 8 in a transverse array, which are used for cooperating with the adjusting plate 14 for adjusting;

[0026] As shown in the drawings, Figure 4 The bottom surface of the adjusting plate 14 is fixedly provided with a threaded short rod 15, the threaded short rod 15 is inserted into the adjusting hole 8, the top surface of the fastening knob 16 is provided with a second screw hole 17 and is screwed with the threaded short rod 15, the overall length of the left arm corrector is adjusted according to the length of the left arm of the user, the threaded short rod 15 on the bottom surface of the adjusting plate 14 is inserted into the adjusting hole 8 required by the fixed plate 7, the fastening knob 16 is screwed onto the threaded short rod 15 through the second screw hole 17, and the adjusting plate 14 is fixed on the fixed plate 7, so that the distance between the upper arm and the lower arm is adjusted according to the length of the left arm of the user.

[0027] As shown in the drawings, Figure 4 The outer side wall of the adjusting plate 14 is fixedly provided with an arc-shaped plate 18, and the top surface of the arc-shaped plate 18 is fixedly provided with an elastic band 19, and the other end of the elastic band 19 is fixedly connected with the other side of the top surface of the arc-shaped plate 18 through a buckle 20, the upper arm and the lower arm of the left arm are respectively placed in the two arc-shaped plates 18, the elastic band 19 is pulled and tightly attached to the left arm, and then the elastic band 19 is connected with the arc-shaped plate 18 through the buckle 20, so that the left arm corrector can be quickly worn on the left arm of the user.

[0028] It should be noted that the utility model is a left arm corrector, which is used for correcting the holding posture of the left arm of a violin player during practice, and the overall length of the left arm corrector is adjusted according to the length of the left arm of the user before use, the threaded short rod 15 on the bottom surface of the adjusting plate 14 is inserted into the corresponding adjusting hole 8 on the top surface of the fixed plate 7, the fastening knob 16 is screwed onto the threaded short rod 15 through the second screw hole 17 on the top surface of the fastening knob 16 and is screwed together, so that the adjusting plate 14 can be fixed on the fixed plate 7 after adjustment, and the length of the left arm corrector is adjusted.

[0029] After the length of the left arm corrector is adjusted according to the length of the left arm of the user, the user can place the upper arm and the lower arm of the left arm in the arc-shaped plates 18 fixedly arranged on the outer side wall of the symmetrical adjusting plate 14, and manually pull the elastic band 19 on one side of the top surface of the arc-shaped plate 18 to make the elastic band 19 elastically deform and tightly attach to the left arm, and then the other end of the elastic band 19 is fixedly connected with the other side of the top surface of the arc-shaped plate 18 through the buckle 20, so that the left arm corrector can be quickly worn on the left arm of the user.

[0030] After the left arm corrector is worn, the user bends the upper arm and the lower arm of the left arm into the corresponding angle according to the correct posture of holding the violin, the rotating rod 6 installed on the outer wall of the second concave plate 2 rotates in the rotating hole 5 opened on the inner wall of the first concave plate 1, and the correct posture of holding the violin is determined. In order to avoid the change of the posture of holding the violin caused by the rotation between the first concave plate 1 and the second concave plate 2, the screw knob 12 in the first screw hole 11 opened on the top surface of the fixed block 10 installed on the outer wall of the first concave plate 1 is rotated, the screw knob 12 is screwed in the first screw hole 11, and the limiting rod 13 installed at the bottom is pushed to the rotating rod 6 after the screw knob 12 is continuously rotated, until the limiting rod 13 is inserted into the corresponding limiting hole 9 opened on the outer wall of the rotating rod 6, and the screw knob 12 cannot be rotated any more. In this way, the rotation between the first concave plate 1 and the second concave plate 2 is limited, and the correct posture of holding the violin of the user's left arm can be ensured during the practice, so that the left arm corrector can be quickly worn on the left arms of different users, which not only improves the applicability of the left arm corrector, but also effectively corrects the posture of holding the violin of the user's left arm, and meets the needs of the violin player during the practice.

[0031] In conclusion, only the preferred embodiments of the utility model are described above, and are not used to limit the utility model. Although the utility model is described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the utility model, and equivalent substitutes can be used to replace the components therein, or some technical features therein can be replaced equivalently, as long as they are within the spirit and principles of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A left arm orthosis comprising a first concave plate (1) and a second concave plate (2), characterized in that: The second concave plate (2) is movably connected with the first concave plate (1) through rotating rods (6) on both sides of the outer wall of the second concave plate (2), and the outer wall of the first concave plate (1) is provided with a limiting mechanism (3) on both sides, the limiting mechanism (3) comprises a fixed block (10), a screw knob (12) and a limiting rod (13), the fixed block (10) is fixedly connected on both sides of the outer wall of the first concave plate (1), the screw knob (12) is movably connected in a first screw hole (11) in the top surface of the fixed block (10), and the limiting rod (13) is fixedly connected to the bottom end of the screw knob (12).

2. A left arm orthosis according to claim 1, characterized in that: The outer side walls of the first concave plate (1) and the second concave plate (2) are further respectively provided with an adjusting and fixing mechanism (4), and the adjusting and fixing mechanism (4) comprises a fixed plate (7), an adjusting plate (14), an arc-shaped plate (18), an elastic band (19) and a buckle (20), the outer side walls of the first concave plate (1) and the second concave plate (2) are respectively fixedly connected with the fixed plate (7), the adjusting plate (14) is fixedly connected with the fixed plate (7) through a fastening knob (16), the arc-shaped plate (18) is fixedly connected to the outer side end of the adjusting plate (14), and the elastic band (19) is fixedly connected to one side of the top surface of the arc-shaped plate (18) and fixedly connected with the other side of the top surface of the arc-shaped plate (18) through the buckle (20).

3. A left arm orthosis according to claim 2, characterized in that: Rotating holes (5) are formed in the inner walls of the notches of the first concave plate (1) on both sides, and rotating rods (6) are fixedly installed on both sides of the outer wall of the second concave plate (2), the rotating rods (6) are movably installed in the rotating holes (5), and a plurality of limiting holes (9) are formed in the outer wall of the rotating rod (6) in an annular array.

4. A left arm orthosis according to claim 3, characterized in that: Fixed blocks (10) are fixedly installed on both sides of the outer wall of the first concave plate (1), and a first screw hole (11) is formed in the top surface of the fixed block (10), the screw knob (12) is threadedly connected with the first screw hole (11), and a limiting rod (13) is fixedly installed at the bottom end of the screw knob (12), the limiting rod (13) is inserted into and installed in the limiting hole (9).

5. A left arm orthosis according to claim 4, characterized in that: Fixed plates (7) are fixedly installed on the outer side walls of the first concave plate (1) and the second concave plate (2), and a plurality of adjusting holes (8) are formed in the top surface of the fixed plate (7) in a transverse array.

6. A left arm orthosis according to claim 5, characterized in that: A threaded short rod (15) is fixedly installed on the inner side wall of the bottom surface of the adjusting plate (14), and the threaded short rod (15) is inserted and installed in the adjusting hole (8), a second screw hole (17) is formed in the top surface of the fastening knob (16) and threadedly connected with the threaded short rod (15) through the second screw hole (17). An arc-shaped plate (18) is fixedly installed on the outer side end wall of the adjusting plate (14), and an elastic band (19) is fixedly installed on one side of the top surface of the arc-shaped plate (18), and the other end of the elastic band (19) is fixedly installed with the other side of the top surface of the arc-shaped plate (18) through the buckle (20).

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