A caliper brake

Abstract

The utility model discloses a caliper type brake, including stator and apron, the stator is constructed with the electromagnetic setting groove, is used for setting the electromagnetic coil and spring setting groove, is used for setting reset spring, and the apron is arranged to the open direction of electromagnetic setting groove, spring setting groove, the first interval is left between apron and stator along the assembly direction of both, and the two end faces of bolt sleeve respectively push to apron towards one side of stator and one side of stator towards apron, and the length of bolt sleeve is equal with the first interval. Thus, the bolt sleeve of specific length (i. e. the first interval length) is arranged between apron and stator, and is filled in the first interval between apron and stator butt joint surface, to determine the distance between apron and stator through bolt sleeve fast, realizes the quick positioning of relative position between apron and stator, thereby through the bolt sleeve of prefabricated length equal to the required first interval, the positioning difficulty problem when manufacturing or assembling is solved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic brake technology, and in particular to a caliper brake. Background Technology

[0002] An electromagnetic brake is a device that uses electromagnetic force to control the braking state. Its core consists of an electromagnet, an armature, and a brake disc. When the coil is energized, the electromagnet generates magnetic force to attract the armature, causing the brake disc to separate and release the brake (or maintain the released state). When the power is off, a spring or other reset mechanism pushes the armature to reset, and the brake disc presses to generate braking torque, achieving rapid braking or keeping the load stationary.

[0003] Electromagnetic brakes are mainly used for motor braking. In some cases, the brake disc can also be an external component, i.e., a caliper brake. For example, in the structure disclosed in patent (CN203187342U), the brake disc is an external component forming the overall device. In such cases, it may be necessary to adapt brake discs produced by other manufacturers. Therefore, the clearance between the armature, brake disc, and stator (or cover plate) needs to be determined for different brake disc models, which is a rather complicated process. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a solution.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A caliper-type brake includes a stator and a cover plate. The stator has an electromagnetic mounting groove for mounting an electromagnetic coil and a spring mounting groove for mounting a return spring. The cover plate is arranged with the openings of the electromagnetic mounting groove and the spring mounting groove. A first gap is left between the cover plate and the stator along their assembly direction. The cover plate has a through hole, and the stator has a countersunk hole coaxial with the through hole. A cylindrical bolt sleeve is provided within the first gap. The center hole of the bolt sleeve is coaxial with the countersunk hole and the through hole. The two end faces of the bolt sleeve abut against the side of the cover plate facing the stator and the side of the stator facing the cover plate, respectively. The length of the bolt sleeve is equal to the first gap.

[0007] Its beneficial effect is that a bolt sleeve of a specific length (i.e., the first spacing length) is set between the cover plate and the stator, and it is filled in the first spacing between the mating surfaces of the cover plate and the stator. The distance between the cover plate and the stator can be quickly determined by the bolt sleeve, realizing the rapid positioning of the relative position between the cover plate and the stator. Thus, by using a prefabricated bolt sleeve with a length equal to the required first spacing, the problem of positioning difficulties during manufacturing or assembly is solved.

[0008] Furthermore, an armature is provided between the cover plate and the stator, and a brake disc is suitable to be provided between the armature and the cover plate; the first spacing and the length of the bolt sleeve are H1, the thickness of the brake disc is H2, the thickness of the armature is H3, and the reserved gap between the armature and the stator is ΔH; H2+H3+ΔH=H1.

[0009] Furthermore, a protective shell is provided on the outer periphery of the stator, the protective shell extending to the periphery of the cover plate and fitting against the outer peripheral wall of the cover plate, and the armature and the brake disc are covered inside.

[0010] Furthermore, the protective shell is a C-shaped arc-shaped shell, and the protective shell covers the bolt and the bolt sleeve inside.

[0011] Furthermore, the protective shell ends at the cover plate and forms a stepped surface at the end; the stepped surface includes a horizontal sidewall perpendicular to the assembly direction of the cover plate and the stator and a vertical sidewall with an annular structure, the vertical sidewall is fitted to the periphery of the cover plate, and a sealing strip is provided between the horizontal sidewall and the side of the cover plate facing the stator.

[0012] Furthermore, the end of the protective shell connected to the stator is provided with a mating groove, and a mating protrusion extends from the outer peripheral wall of the stator, the mating protrusion being adapted to have an interference fit with the mating groove.

[0013] Furthermore, the protective shell is also constructed with a groove, which is located next to the armature on the side close to the stator, and a sealing ring is provided in the groove.

[0014] Furthermore, it also includes a connecting arm, one end of which is connected to the center of the stator. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a caliper brake structure according to some embodiments of this application;

[0016] Figure 2 A caliper brake mounted on an external device according to some embodiments of this application;

[0017] Figure 3 yes Figure 1 A magnified view of a portion of region A in the middle;

[0018] Figure 4 This is a schematic diagram of a caliper brake structure from another angle according to some embodiments of this application.

[0019] In the picture:

[0020] 100-caliper brake

[0021] 10-Stator, 11-Electromagnetic mounting slot, 12-Spring mounting slot, 13-Counterhole, 14-Sealing strip;

[0022] 20-Cover plate, 21-Through hole, 22-Matching protrusion;

[0023] 30-bolt;

[0024] 40-bolt sleeve;

[0025] 50-Armor;

[0026] 60 - Protective shell, 61 - Opening side, 62 - Horizontal sidewall, 63 - Vertical sidewall, 64 - Mating groove;

[0027] 70 - Connecting arm;

[0028] 80-Brake disc. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] See Figures 1-4 This utility model provides a technical solution:

[0031] A caliper brake 100 includes a cover plate 20 and a stator 10, such as Figure 1 As shown, the stator 10 has an electromagnetic mounting slot 11 for mounting an electromagnetic coil; the stator 10 also has a spring mounting slot 12 for mounting a reset spring; and cover plates 20 are arranged in the open direction of the electromagnetic mounting slot 11 and the spring mounting slot 12.

[0032] Combination Figure 1 Understanding that the armature 50 is adjacent to the openings of the electromagnetic mounting slot 11 and the spring mounting slot 12, when the electromagnetic coil is energized, the armature 50 is attracted away from the stator 10, increasing the distance between the cover plate 20 and the armature 50, allowing the brake disc 80 between them to rotate; when the electromagnetic coil is not energized, the spring pushes the armature 50 closer to the cover plate 20, thereby reducing the distance between the armature 50 and the cover plate 20, causing the friction disc between them to brake. The case with the brake disc 80 can be referenced. Figure 2 As shown.

[0033] In this embodiment, to ensure that the caliper brake 100 can reliably adapt to external brake discs 80 of different models and thicknesses, a predetermined first gap is maintained in the assembly direction between the cover plate 20 and the stator 10. In other words, the distance between the assembled cover plate 20 and the stator 10 in the axial direction of the caliper brake is the first gap. Specifically, the cover plate 20 has at least two through holes 21 penetrating its thickness. The two through holes 21 are arranged in a circumferential array at the edge of the cover plate 20. Correspondingly, on the surface where the cover plate 20 and the stator 10 mate, countersunk holes 13 (or stepped holes) are machined, each corresponding in number and position to the through holes 21 of the cover plate 20. The inlet end of the countersunk hole 13, that is, the side closer to the stator 10, has a larger diameter than the bottom hole diameter, forming a stepped surface, and its central axis is strictly coaxially aligned with the central axis of the corresponding through hole 21 on the cover plate 20. When the bolt 30 passes through the through hole 21 of the cover plate 20 and is screwed into the threaded part at the bottom of the countersunk hole 13 of the stator 10, the head of the bolt 30 will fall into the enlarged part of the inlet end of the countersunk hole 13.

[0034] The aforementioned first gap needs to ensure that the armature 50 can move 0.35~0.61mm along its own axis to switch between being in close contact with the brake disc 80 and being separated from the brake disc 80. In this embodiment, a cylindrical bolt sleeve 40 is provided within the first gap. The center hole of the bolt sleeve 40 is coaxially arranged with the countersunk hole 13 and the through hole 21. The two end faces of the bolt sleeve 40 respectively abut against the side of the cover plate 20 facing the stator 10 and the side of the stator 10 facing the cover plate 20, and the length of the bolt sleeve 40 is equal to the first gap.

[0035] It is understandable that a bolt sleeve 40 of a specific length (i.e., the first spacing length) is set between the cover plate 20 and the stator 10, and it is filled within the first spacing between the mating surfaces of the cover plate 20 and the stator 10, so that the distance between the cover plate 20 and the stator 10 can be quickly determined by the bolt sleeve 40, thereby realizing the rapid positioning of the relative position between the cover plate 20 and the stator 10. Thus, by using a prefabricated bolt sleeve 40 with a length equal to the required first spacing, the problem of positioning difficulties during manufacturing or assembly is solved.

[0036] Specifically, in combination Figure 2 It is understood that an armature 50 is provided between the cover plate 20 and the stator 10, and a brake disc 80 is suitable to be provided between the armature 50 and the cover plate 20; the brake disc 80 may be a component of an external device such as a brake pad, so that it can be braked by a caliper brake 100.

[0037] In subsequent examples, the first gap and the length of the bolt sleeve 40 are defined as H1, the thickness of the brake disc 80 is defined as H2, the thickness of the armature 50 is defined as H3, and the reserved gap between the armature 50 and the stator 10 is ΔH, taking ΔH=2mm as an example. Thus, the first gap can be obtained by calculating as follows: H2+H3+ΔH=H1.

[0038] Specifically, during the manufacturing and design process, the personnel first need to tightly fit the armature 50 to the selected target brake disc 80 (brake pad). At this point, the total axial thickness after the two are fitted together is directly measured, and this value is (H2 + H3) in the formula. After obtaining this measured total thickness value, it is only necessary to add the preset clearance value ΔH (such as 3mm) to ensure the necessary movement stroke of the armature 50. The resulting sum is the required precise length H1 of the bolt sleeve 40.

[0039] Then, after manufacturing the bolt sleeve 40 of this specific length (H1), during the assembly of the cover plate 20 and the stator 10, simply place the bolt sleeve 40 between the through hole 21 of the cover plate 20 and the countersunk hole 13 of the stator 10, ensuring that its two end faces abut against the corresponding mounting surfaces of the cover plate 20 and the stator 10, respectively. Subsequently, pass the mounting bolt 30 through the through hole 21 of the cover plate 20 and the center hole of the bolt sleeve 40, and screw it into the threaded portion at the bottom of the countersunk hole 13 of the stator 10. In this way, the bolt sleeve 40 itself acts as a precisely positioned spacer, and its length H1 defines the final first gap between the cover plate 20 and the stator 10. This gap not only ensures that the armature 50 has a reliable movement space of ΔH (2mm) to perform engagement and release actions, but also perfectly matches the thickness H2 of the selected brake disc 80 (brake pad) and the thickness H3 of the armature 50.

[0040] To achieve dust and water protection, in some embodiments, a C-shaped arc-shaped protective shell 60 is added to the outer periphery of the stator 10. Continuing as... Figure 3 As shown, the protective shell 60 extends outward from the periphery of the stator 10 and covers the outer edge of the cover plate 20. Its arc-shaped contour closely fits the periphery of the cover plate 20, thereby enclosing the armature 50 and the brake disc 80 within the sealed cavity formed by the protective shell 60. Wherein, as Figure 4 As shown, the C-shaped opening side 61 of the protective shell 60 is used to avoid the assembly space of the external brake disc 80 edge and the wheel hub and other connecting structures, ensuring that the brake disc 80 can be connected to external equipment and that its rotational freedom is not interfered with.

[0041] Referring further to the illustration, the end of the protective shell 60 extends into the area of ​​the cover plate 20 and forms a stepped surface. This stepped surface is composed of a horizontal sidewall 62 perpendicular to the assembly direction of the cover plate 20 and the stator 10, and an annular vertical sidewall 63. The vertical sidewall 63 forms a radially mating surface with the outer circumferential surface of the cover plate 20. An annular sealing strip 14 can be embedded in the space defined between the horizontal sidewall 62 and the surfaces of the stator 10 and the bolt sleeve 40. When the protective shell 60 is assembled in place, the sealing strip 14 undergoes elastic deformation under the pressure of the horizontal sidewall 62, achieving axial sealing.

[0042] Furthermore, the connection between the protective shell 60 and the stator 10 adopts an interference fit. The outer peripheral wall of the stator 10 is provided with a protruding mating protrusion 22. Correspondingly, the inner side of the end of the protective shell 60 is machined with a mating groove 64 that matches the contour of the protrusion. During assembly, the mating protrusion 22 is fully embedded into the mating groove 64 by interference pressing, so as to achieve a quick and gapless fit. In some preferred embodiments, an annular groove is machined on the inner wall of the stator 10 near the moving area of ​​the armature 50 of the protective shell 60. An O-ring (not shown in the figure) is provided in the groove. The O-ring maintains dynamic sealing contact with the surface of the stator 10 to prevent external contaminants from entering along the moving gap of the armature 50.

[0043] Continue to refer to Figure 2 As shown, this embodiment includes a connecting arm 70 rotatably connected to the center of the stator 10. The connecting arm 70 is connected to the bearing seat at the center of the stator 10 via a pin, and its lever arm extension is used to connect to an external mechanism that requires braking.

[0044] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A caliper-type brake, characterized in that, Includes cover plate and stator; The stator has an electromagnetic setting slot for setting an electromagnetic coil and a spring setting slot for setting a reset spring. The cover plate is arranged in the open direction of the electromagnetic setting slot and the spring setting slot. A first gap is left between the cover plate and the stator along the assembly direction of the two. The cover plate is provided with a through hole, and the stator is constructed with a countersunk hole coaxial with the through hole. A cylindrical bolt sleeve is provided within the first spacing. The central hole of the bolt sleeve is coaxially arranged with the countersunk hole and the through hole. The two end faces of the bolt sleeve respectively abut against the side of the cover plate facing the stator and the side of the stator facing the cover plate. The length of the bolt sleeve is equal to the first spacing.

2. The caliper brake according to claim 1, characterized in that, An armature is provided between the cover plate and the stator, and a brake disc is adapted to be provided between the armature and the cover plate; The first spacing and the length of the bolt sleeve are H1, the thickness of the brake disc is H2, the thickness of the armature is H3, and the reserved gap between the armature and the stator is ΔH. H2 + H3 + ΔH = H1.

3. The caliper brake according to claim 2, characterized in that, A protective shell is provided on the outer periphery of the stator. The protective shell extends to the periphery of the cover plate and fits against the outer peripheral wall of the cover plate, covering the armature and the brake disc inside.

4. The caliper brake according to claim 3, characterized in that, The protective shell is a C-shaped arc-shaped shell, which encloses the bolt and the bolt sleeve inside.

5. The caliper brake according to claim 3, characterized in that, The protective shell ends at the cover plate and forms a stepped surface at the end; The stepped surface includes a horizontal sidewall perpendicular to the assembly direction of the cover plate and the stator and a vertical sidewall with an annular structure. The vertical sidewall is fitted to the periphery of the cover plate, and a sealing strip is provided between the horizontal sidewall and the side of the cover plate facing the stator.

6. The caliper brake according to claim 3, characterized in that, The protective shell has a mating groove at one end connected to the stator, and a mating protrusion extends from the outer peripheral wall of the stator, the mating protrusion being adapted to have an interference fit with the mating groove.

7. The caliper brake according to claim 6, characterized in that, The protective shell is also provided with a groove, which is located on the side of the armature near the stator, and a sealing ring is provided in the groove.

8. The caliper brake according to claim 1, characterized in that, It also includes a connecting arm, one end of which is connected to the center of the stator.

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