Hydraulic pump with electromagnetic clutch

Abstract

The hydraulic pump with the electromagnetic clutch comprises the hydraulic pump and the electromagnetic clutch, the electromagnetic clutch comprises a clutch disc, a rotating wheel and a coil, an installation table is arranged on the hydraulic pump, a clamping spring groove is formed in the installation table, the coil is arranged on the installation table in a sleeved mode, and the electromagnetic clutch is arranged on the electromagnetic clutch. A clamping spring used for locking the coil on the installation table is further arranged on the clamping spring groove, an assembly cavity is formed in the side, facing the hydraulic pump, of the rotating wheel, the coil is partially located in the assembly cavity, the clutch disc is sequentially provided with an inner disc and an outer disc from inside to outside, the inner disc is fixed to an input shaft of the hydraulic pump, and when the coil is powered on, the outer disc is fixed to the input shaft of the hydraulic pump. The outer disc can elastically deform relative to the inside and is adsorbed to the rotating wheel, the coil is fixed to the hydraulic pump through the clamping spring, the rotating wheel is directly connected from outside to inside in a sleeved mode, and the rotating wheel is more convenient to assemble and more stable to use through locking of the clamping spring.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to a hydraulic pump with an electromagnetic clutch. Background Technology

[0002] In existing technologies, hydraulic pumps in new energy vehicles are typically used to lift or open / close cargo box doors. To independently control the operation of the hydraulic pump, a clutch is usually used. The clutch includes a rotating wheel, a coil, and a clutch disc. The coil is located inside the rotating wheel. When energized, the rotating wheel generates a magnetic force that attracts the clutch disc, causing the clutch disc and the rotating wheel to rotate synchronously. When the coil is de-energized, the rotating wheel loses its magnetic force, thus releasing the clutch disc. However, the coil cannot directly contact the rotating wheel, and it needs to be partially located inside the rotating wheel, making its assembly process quite complicated. Summary of the Invention

[0003] The purpose of this utility model is to overcome the defects of the prior art. This utility model provides a hydraulic pump with an electromagnetic clutch. The coil is fixed to the hydraulic pump by a snap ring, and the rotating wheel can be directly sleeved from the outside to the inside. The snap ring locks it, making it more convenient to assemble and more stable to use.

[0004] This utility model discloses a hydraulic pump with an electromagnetic clutch, comprising a hydraulic pump and an electromagnetic clutch. The electromagnetic clutch includes a clutch disc that rotates synchronously with the input shaft of the hydraulic pump, a rotating wheel rotatably mounted on the input shaft of the hydraulic pump, and a coil for generating magnetic force on the rotating wheel. The hydraulic pump is characterized by having a mounting platform with a retaining ring groove. The coil is mounted on the mounting platform, and the retaining ring groove is further provided with a retaining ring for locking the coil to the mounting platform. The rotating wheel has an assembly cavity on the side facing the hydraulic pump, and the coil is located within the assembly cavity. The clutch disc has an inner disc and an outer disc arranged sequentially from the inside to the outside. The inner disc is fixed to the input shaft of the hydraulic pump. When the coil is energized, the outer disc can elastically deform relative to the inner disc and be attracted to the rotating wheel.

[0005] Using the above technical solution, an installation platform is first used for the initial assembly of the coil, and the coil is pressed together by a snap ring to fix it in place and prevent it from falling off. Furthermore, the rotating wheel can be directly sleeved from the outside to the inside and locked by a snap ring, making assembly more convenient. When the coil is energized, the rotating wheel generates a magnetic force, which attracts the outer disc. Since the inner disc is fixed on the input shaft of the hydraulic pump, the input shaft of the hydraulic pump is linked to the rotating wheel. When the coil is de-energized, the rotating wheel loses its magnetic force, thereby releasing the outer disc and allowing the rotating wheel to spin freely.

[0006] A further feature of this invention is that it includes an elastic reset piece located on the outer side of the inner and outer disks, with one end of the elastic reset piece connected to the outer disk and the other end connected to the inner disk.

[0007] By adopting the above technical solution, the elastic reset plate can provide an elastic reset force to the outer disk, thereby further improving the reset effect of the outer disk.

[0008] A further feature of this invention is that the retaining ring groove is provided with an inclined pressing surface for pressing the retaining ring inward, the outer side of the retaining ring abuts against the inclined pressing surface, and the inner side of the retaining ring is pressed onto the coil.

[0009] Using the above technical solution, the retaining spring can be squeezed by the inclined extrusion surface, thereby pressing the coil tightly and preventing the coil from loosening.

[0010] A further feature of this invention is that a bearing is also fitted on the mounting platform, the rotating wheel is fitted on the bearing, and a blocking surface that restricts the bearing from sliding inward is provided on the inner side of the bearing on the mounting platform, and a blocking component that restricts the bearing from sliding outward is detachably connected on the outer side of the bearing on the mounting platform.

[0011] By adopting the above technical solution, the resistance of the rotating wheel can be further reduced by the bearing, and the cooperation between the blocking surface and the blocking component can prevent the bearing from axially slipping, making it more stable during use. In addition, the blocking component is detachable, which facilitates the replacement of the bearing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 for Figure 1 Sectional view;

[0014] Figure 3 This is a schematic diagram of the hydraulic pump part of this utility model;

[0015] Figure 4 This is a schematic diagram of the electromagnetic clutch structure of this utility model;

[0016] Figure 5 for Figure 2 Enlarged view of part a. Detailed Implementation

[0017] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] This utility model discloses a hydraulic pump with an electromagnetic clutch, comprising a hydraulic pump 1 and an electromagnetic clutch 2. The hydraulic pump 1 is prior art and will not be described in detail here. The electromagnetic clutch 2 includes a clutch disc 21 that rotates synchronously with the input shaft of the hydraulic pump 1, a rotating wheel 22 rotatably mounted on the input shaft of the hydraulic pump 1, and a coil 23 for generating magnetic force on the rotating wheel 22. In this embodiment, the hydraulic pump 1 is provided with a mounting platform 3, and the mounting platform 3 is provided with a retaining ring groove 31. The coil 23 is mounted on the mounting platform 3, and the retaining ring groove 31 is also provided with a retaining ring 4 for locking the coil 23 onto the mounting platform 3. The rotating wheel 22 has an assembly cavity 221 on the side facing the hydraulic pump 1. The coil 23 is partially located in the assembly cavity 221. The clutch disc 21 has an inner disc 211 and an outer disc 212 arranged sequentially from the inside to the outside. The inner disc 211 is fixed on the input shaft of the hydraulic pump 1. When the coil 23 is energized, the outer disc 212 can elastically deform relative to the inside and be attracted to the rotating wheel 22. (The deformation of the outer disc 212 is preferably achieved by deforming the connection between the outer disc 212 and the inner disc 211, thereby attracting it to the rotating wheel 22. Alternatively, the outer disc 212 can be attracted to the rotating wheel 22 by the deformation of the elastic leaf spring.) The rotating wheel 22 is preferably rotatably mounted on the mounting platform 3.

[0020] Using the above technical solution, the mounting platform 3 is first used for the first-step assembly of the coil 23, and the coil 23 is pressed by the snap ring 4 (the snap ring 4 will partially protrude from the snap ring groove 31 in order to press the coil 23, which is existing technology and will not be described in detail here). This fixes the coil 23 and prevents it from falling off. Furthermore, the rotating wheel 22 can be directly sleeved from the outside to the inside and locked by the snap ring 4, making it more convenient to assemble. When the coil 23 is energized, the rotating wheel 22 will generate a magnetic force, thereby attracting the outer disk 212. Since the inner disk 211 is fixed on the input shaft of the hydraulic pump 1, the input shaft of the hydraulic pump 1 is linked with the rotating wheel 22. When the coil 23 is de-energized, the rotating wheel 22 loses its magnetic force, thereby releasing the outer disk 212 and the rotating wheel 22 spins freely.

[0021] It also includes an elastic reset piece 5, which is located on the outside of the inner disk 211 and the outer disk 212. One end of the elastic reset piece 5 is connected to the outer disk 212 and the other end is connected to the inner disk 211. The elastic reset piece 5 can provide an elastic reset force to the outer disk 212, further improving the reset effect of the outer disk.

[0022] The retaining ring groove 31 is provided with an inclined pressing surface 311 for pressing the retaining ring 4 inward. The outer side of the retaining ring 4 abuts against the inclined pressing surface 311, and the inner side of the retaining ring 4 is pressed onto the coil 23. The retaining ring 4 can be pressed by the inclined pressing surface 311, so that the retaining ring 4 can press the coil 23 tightly and prevent the coil 23 from loosening.

[0023] The mounting platform 3 is also fitted with a bearing 6, and the rotating wheel 22 is fitted on the bearing 6. The mounting platform 3 has a blocking surface 7 on the inner side of the bearing 6 to restrict the bearing 6 from sliding inward. The mounting platform 3 has a blocking member 8 on the outer side of the bearing 6 to restrict the bearing 6 from sliding outward. The bearing 6 can further reduce the resistance of the rotating wheel 22. The cooperation between the blocking surface 7 and the blocking member 8 can prevent the bearing 6 from sliding axially, making it more stable during use. The blocking member 8 is detachable, which is convenient for the bearing 6 to be replaced. The blocking member is preferably a retaining spring.

Claims

1. A hydraulic pump with an electromagnetic clutch, comprising a hydraulic pump (1) and an electromagnetic clutch (2), wherein the electromagnetic clutch (2) comprises a clutch disc (21) that rotates synchronously with the input shaft of the hydraulic pump (1), a rotating wheel (22) rotatably mounted on the input shaft of the hydraulic pump (1), and a coil (23) for generating magnetic force on the rotating wheel (22), characterized in that: The hydraulic pump (1) is provided with a mounting platform (3), and the mounting platform (3) is provided with a snap ring groove (31). The coil (23) is sleeved on the mounting platform (3). The snap ring groove (31) is also provided with a snap ring (4) for locking the coil (23) on the mounting platform (3). The rotating wheel (22) is provided with an assembly cavity (221) on the side facing the hydraulic pump (1). The coil (23) is located in the assembly cavity (221). The clutch disc (21) is provided with an inner disc (211) and an outer disc (212) from the inside to the outside. The inner disc (211) is fixed on the input shaft of the hydraulic pump (1). When the coil (23) is energized, the outer disc (212) can elastically deform relative to the inside and be attracted to the rotating wheel (22).

2. A hydraulic pump with an electromagnetic clutch according to claim 1, characterized in that: It also includes an elastic reset piece (5), which is located on the outside of the inner disk (211) and the outer disk (212), with one end of the elastic reset piece (5) connected to the outer disk (212) and the other end connected to the inner disk (211).

3. A hydraulic pump with an electromagnetic clutch according to claim 1 or 2, characterized in that: The circlip groove (31) is provided with an inclined pressing surface (311) for pressing the circlip (4) inward. The outer side of the circlip (4) abuts against the inclined pressing surface (311), and the inner side of the circlip (4) is pressed onto the coil (23).

4. A hydraulic pump with an electromagnetic clutch according to claim 3, characterized in that: The mounting platform (3) is also fitted with a bearing (6), the rotating wheel (22) is fitted on the bearing (6), and the mounting platform (3) is provided with a blocking surface (7) on the inner side of the bearing (6) to restrict the bearing (6) from sliding inward. The mounting platform (3) is detachably connected with a blocking member (8) on the outer side of the bearing (6) to restrict the bearing (6) from sliding outward.

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