A buckle that can prevent the magnetic stripe from warping

Abstract

A buckle that can prevent the magnetic strip from warping, comprising: two connecting pieces (1) and a steering piece (2). The lower end of the connecting piece (1) has a connecting groove (11). The steering piece (2) includes: two rotatable rotating blocks (21). One rotating block (21) is fixed in engagement with one connecting piece (1), and the other rotating shell (21) is fixed in engagement with the other connecting piece (1). The buckle with the above structure can make the magnetic strip of the encoder fully fit the test shaft, avoid the situation of partial warping, and ensure the normal operation of the magnetic encoder; in addition, the above buckle can be applied to encoders with different shaft diameters and has good versatility.

Description

Technical Field

[0001] The present invention relates to a magnetic encoder, and more particularly to a buckle that can prevent a magnetic strip from warping up. Background Art

[0002] A magnetic encoder generally consists of a test shaft, a magnetic strip, and a read head, and is a sensor used to measure the rotational speed of a test shaft with a large shaft diameter. As Figure 1 shown, a buckle 200 is usually provided on the magnetic strip 100. The buckle 200 has two connecting members. After the magnetic strip 100 is installed on the test shaft 400 of the magnetic encoder, the two connecting members of the buckle 200 are fixedly connected by screws 300, thereby fixing the magnetic strip 100 on the circumference of the test shaft 400.

[0003] However, since the edges of the connecting members of the buckle 200 are straight edges, and the two connecting members of the buckle 200 are parallel to each other after installation, a gap 500 (i.e., local warping) will be generated between the magnetic strip 100 and the test shaft 400 near the position where the connecting members are in contact with the test shaft 400, resulting in the magnetic strip 100 not being in contact with the test shaft 400. Thus, the read head cannot accurately read the signal of the warped part of the magnetic pole, causing large data fluctuations when the magnetic encoder measures the speed of the test shaft 400 and affecting the normal performance of the magnetic encoder. Summary of the Invention

[0004] The technical solution of the present invention is directed to the above situation. In order to solve the above problems, a buckle that can prevent a magnetic strip from warping up is provided. The buckle includes: two connecting members and a steering member. The lower end of the connecting member has a connecting groove, and the connecting grooves of the two connecting members are aligned with each other in the circumferential direction. The steering member includes: two rotatable rotating blocks, one rotating block is fixed in engagement with one connecting member, and the other rotating block is fixed in engagement with the other connecting member.

[0005] Further, the widths of the connecting grooves of the two connecting members are equal, and the connecting grooves of the two connecting members are aligned with each other in the circumferential direction.

[0006] Further, the buckle further includes: at least two screws. The connecting member has a first threaded hole, and the rotating block has a second threaded hole. The screw is engaged with both the first threaded hole and the second threaded hole at the same time.

[0007] Further, the cross-section of the connecting member is in a "U" shape, having a cross plate and two vertical plates. The two vertical plates are located at both ends of the cross plate and protrude from the upper surface of the cross plate. The connecting groove is located on the upper surface of the cross plate. Both vertical plates have first threaded holes. There are two steering members and four screws.

[0008] Further, the two connecting members include: a long connecting member and a short connecting member. The width of the long connecting member is greater than that of the short connecting member. The two ends of the long connecting member are respectively joined and fixed to the outer rotating blocks of the two steering members, and the two ends of the short connecting member are respectively joined and fixed to the inner rotating blocks of the two steering members.

[0009] Further, the widths of the two connecting members are equal. One end of a connecting member is joined and fixed to the outer rotating block of one steering member, and the other end is joined and fixed to the inner rotating block of the other steering member; one end of the other connecting member is joined and fixed to the inner rotating block of one steering member, and the other end is joined and fixed to the outer rotating block of the other steering member.

[0010] Further, one rotating block of the steering member has a rotating shaft, and the other rotating block has a rotating hole, and the rotating shaft is inserted into the rotating hole.

[0011] Further, the second threaded hole is located at the upper end of the rotating block. The lower end of one rotating block of the steering member has a rotating shaft, and the lower end of the other rotating block has a rotating hole.

[0012] After adopting the above technical solution, the effect of the present invention is: The buckle with the above structure can make the magnetic strip of the encoder fully fit the test shaft, avoid the situation of local warping, and ensure the normal operation of the magnetic encoder. In addition, the above buckle can be applied to encoders with different shaft diameters, and has good versatility. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the unfolded state of the magnetic strip in the prior art;

[0014] Figure 2 It is a partial schematic diagram of the magnetic encoder in the prior art;

[0015] Figure 3 It is a schematic diagram of the buckle according to Embodiment 1 of the present invention;

[0016] Figure 4 It is a schematic diagram of the connecting member according to Embodiment 1 of the present invention;

[0017] Figure 5 It is a schematic diagram of the steering member according to Embodiment 1 of the present invention;

[0018] Figure 6 It is a schematic diagram of the magnetic strip according to Embodiment 1 of the present invention;

[0019] Figure 7 It is a partial schematic diagram of the magnetic encoder according to Embodiment 1 of the present invention;

[0020] Figure 8Schematic diagram of the buckle involved in Embodiment 2 of the present invention. Detailed implementation mode

[0021] It should be particularly noted that the terms "first", "second", and "third" in the present invention are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0022] The technical solution of the present invention will be further described below through embodiments:

[0023]

Embodiment 1

[0024] The present invention provides a buckle that can prevent the magnetic stripe from warping. As shown in combination with Figures 3 to 5 , the buckle includes: two connecting members 1 and a turning member 2. The lower end of the connecting member 1 has a connecting groove 11. The turning member 2 includes: two rotatable rotating blocks 21. One rotating block 21 is engaged with one connecting member 1 to form a fixation, and the other rotating block 21 is engaged with the other connecting member 1 to form a fixation.

[0025] As shown in Figure 6 , the magnetic stripe 100 of the magnetic encoder includes: a magnetic tape 101, a plurality of (along the length direction L) magnetic poles 102 with a length of 5 mm, and two steel tape backings 103. The plurality of magnetic poles 102 includes a plurality of N magnetic poles and a plurality of S magnetic poles. The plurality of magnetic poles 102 are arranged in a row in the middle of the magnetic tape 101, and the plurality of N magnetic poles and the plurality of S magnetic poles are arranged alternately. The two steel tape backings 103 are arranged at both ends of the magnetic tape 101.

[0026] During the assembly of the buckle, the two steel tape backings 103 are respectively fixed in the connecting grooves 11 of the two connecting members 1. The steel tape backing 103 is generally fixed in the connecting groove 11 of the connecting member 1 by welding. Of course, in other embodiments, the steel tape backing 103 can also be fixed in the connecting groove 11 of the connecting member 1 by pasting.

[0027] As shown in Figure 7As shown, when the magnetic strip 100 is installed on the test shaft 400 of the magnetic encoder, since the two rotating blocks 21 of the steering member 2 can rotate relative to each other, the two connecting members 1 can also form an inverted V-shaped angle accordingly, so that the position of the magnetic strip 100 near the steel belt backing 103 can completely fit the test shaft 400.

[0028] It can be seen that the buckle with the above structure can make the magnetic strip of the encoder completely fit the test shaft, avoid the situation of partial warping, and ensure the normal operation of the magnetic encoder. In addition, the above buckle can be applied to encoders with different shaft diameters and has good versatility.

[0029] Specifically, please continue to refer to Figure 3 , the widths of the connecting grooves 11 (along the width direction W) of the two connecting members 1 are equal, and the connecting grooves 11 of the two connecting members 1 are aligned with each other along the circumferential direction S. Currently, the widths of both ends of most magnetic strips 100 are equal, and the above setting can make the buckle applicable to most magnetic encoders.

[0030] Specifically, please continue to refer to Figures 3 to 5 , the buckle further includes: at least two screws 3, the connecting member 1 has a first threaded hole 12, the rotating block 21 has a second threaded hole 22, and the screw 3 is simultaneously engaged with the first threaded hole 12 and the second threaded hole 22. In this embodiment, the rotating block 21 is joined to the connecting member 1 by screwing in the screw 3. In other embodiments, the rotating block 21 can be provided with a first hook, and the rotating block 21 is provided with a second hook, and the first hook is latched with the second hook, so as to realize the joining of the rotating block 21 and the connecting member 1.

[0031] Specifically, please continue to refer to Figure 4 , the cross-section of the connecting member 1 is in a "U" shape, having a cross plate 13 and two vertical plates 14. The two vertical plates 14 are located at both ends of the cross plate 13 and protrude from the upper surface of the cross plate 13. The connecting groove 11 is located on the upper surface of the cross plate 13. The two vertical plates 14 both have the first threaded hole 12. There are two steering members 2 and four screws 3. The four first threaded holes 12 are directly opposite (i.e., in one-to-one correspondence) to the four second threaded holes 22. The four screws 3 are engaged with the four first threaded holes 12 one by one, and the four screws 3 are also engaged with the four second threaded holes 22 one by one. One connecting member 1 and the two steering members 2 form two-point positioning, and the other connecting member 1 also forms two-point positioning with the two steering members 2. Compared with single-point positioning, the above structure is more stable in fixation.

[0032] More specifically, please continue to refer to Figure 3, in this embodiment, the two connecting members 1 include: a long connecting member 1a and a short connecting member 1b, and the width of the long connecting member 1a is greater than that of the short connecting member 1b. Wherein, both ends of the long connecting member 1a are respectively joined and fixed to the outer rotating blocks 21 of the two steering members 2, and both ends of the short connecting member 1b are respectively joined and fixed to the inner rotating blocks 21 of the two steering members 2. The above structure can reduce the overall width of the buckle (the overall width of the buckle is equal to the width of the long connecting member 1a), avoid occupying too much space, and meet the requirements of miniaturization.

[0033] Specifically, please continue to refer to Figure 5 , one rotating block 21 of the steering member 2 has a rotating shaft 23, and the other rotating block 21 has a rotating hole 24, and the rotating shaft 23 is inserted into the rotating hole 24. The relative rotation of the two rotating blocks 21 can be realized through the cooperation of the rotating shaft 23 and the rotating hole 24.

[0034] More specifically, in this embodiment, the second threaded hole 22 is located at the upper end of the rotating block 21. One end of the lower end of the rotating block 21 of the steering member 2 has a rotating shaft 23, and the other end of the lower end of the rotating block 21 has a rotating hole 24.

[0035]

Embodiment 2

[0036] In this embodiment, as Figure 8 shown, the structure of the buckle is similar to that of Embodiment 1. The difference is that the widths of the two connecting members 1 are equal (and the shapes are the same). Wherein, one end of a connecting member 1 is joined and fixed to the outer rotating block 21 of a steering member 2, and the other end is joined and fixed to the inner rotating block 21 of the other steering member 2; one end of the other connecting member 1 is joined and fixed to the inner rotating block 21 of a steering member 2, and the other end is joined and fixed to the outer rotating block 21 of the other steering member 2. For the above structure, the same set of molds can be used to produce the connecting member 1, and there is no need to set two different (i.e., different forming widths) molds, thereby reducing the manufacturing cost.

[0037] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features, and principles described in the scope of the patent application of the present invention should be included within the scope of the patent application of the present invention.

Claims

1. A buckle that can prevent the magnetic stripe from warping, Characterized in that: The buckle includes: two connecting pieces (1) and a steering piece (2). The lower end of the connecting piece (1) has a connecting groove (11). The steering piece (2) includes: two rotatable rotating blocks (21). One rotating block (21) is fixed in engagement with one connecting piece (1), and the other rotating block (21) is fixed in engagement with the other connecting piece (1); The buckle further includes: at least two screws (3). The connecting piece (1) has a first threaded hole (12), and the rotating block (21) has a second threaded hole (22). The screw (3) is simultaneously engaged with the first threaded hole (12) and the second threaded hole (22); The cross-section of the connecting piece (1) is in a "U" shape, having a cross plate (13) and two vertical plates (14). The two vertical plates (14) are located at both ends of the cross plate (13) and protrude from the upper surface of the cross plate (13). The connecting groove (11) is located on the upper surface of the cross plate (13). Both vertical plates (14) have the first threaded hole (12). There are two steering pieces (2) and four screws (3).

2. The buckle that can prevent the magnetic stripe from warping according to claim 1, Characterized in that: The widths of the connecting grooves (11) of the two connecting pieces (1) are equal, and the connecting grooves (11) of the two connecting pieces (1) are aligned with each other in the circumferential direction.

3. The buckle that can prevent the magnetic stripe from warping according to claim 1, Characterized in that: The two connecting pieces (1) include: a long connecting piece (1a) and a short connecting piece (1b). The width of the long connecting piece (1a) is greater than the width of the short connecting piece (1b). The two ends of the long connecting piece (1a) are respectively fixed in engagement with the outer rotating blocks (21) of the two steering pieces (2), and the two ends of the short connecting piece (1b) are respectively fixed in engagement with the inner rotating blocks (21) of the two steering pieces (2).

4. The buckle that can prevent the magnetic stripe from warping according to claim 1, Characterized in that: The widths of the two connecting pieces (1) are equal. One end of one connecting piece (1) is fixed in engagement with the outer rotating block (21) of one steering piece (2), and the other end is fixed in engagement with the inner rotating block (21) of the other steering piece (2); One end of the other connecting piece (1) is fixed in engagement with the inner rotating block (21) of one steering piece (2), and the other end is fixed in engagement with the outer rotating block (21) of the other steering piece (2).

5. The buckle that can prevent the magnetic stripe from warping according to claim 1, Characterized in that: One rotating block (21) of the steering piece (2) has a rotating shaft (23), and the other rotating block (21) has a rotating hole (24). The rotating shaft (23) is inserted into the rotating hole (24).

6. The buckle that can prevent the magnetic stripe from warping according to claim 5, Characterized in that: The second threaded hole (22) is located at the upper end of the rotating block (21). The lower end of one rotating block (21) of the steering member (2) has a rotating shaft (23), and the lower end of the other rotating block (21) has a rotating hole (24).

Images