Tubular motor structure

Abstract

The utility model discloses a tubular motor structure, which comprises an output head, a motor body and a vibration reduction connecting assembly which are sequentially arranged along the axial direction of a tubular motor, and the motor body and the vibration reduction connecting assembly are arranged in an outer tube. A gap is formed between the outer surface of the peripheral wall of the motor body and the inner surface of the peripheral wall of the outer pipe, the end, away from the output head, of the motor body is fixed to the outer pipe through a vibration reduction connecting assembly, the end, close to the output head, of the motor body is connected with the output head, and the output head is fixed to the outer pipe. Compared with the prior art, the motor has the advantages that the gap is formed between the motor body and the outer pipe, the motor body and the outer pipe are not in direct contact, the two ends of the motor body are connected with the output head and the vibration reduction connecting assembly respectively, and the output head and the vibration reduction connecting assembly are fixed to the outer pipe respectively, so that only one vibration reduction connecting assembly is needed; therefore, the vibration transmission between the motor body and the outer pipe is reduced, the structure is simplified, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to a power device, and more particularly to a tubular motor structure. Background Technology

[0002] Electric roller shutters or electric screens typically use small tubular motors as their power source. A tubular motor is a high-performance motor, consisting of a tubular housing and components such as a drive assembly, brake assembly, and stroke control assembly supported by bearings within the housing. During operation, an outer tube is placed over the motor and installed in the appropriate location. Due to limitations in assembly precision, the motor may vibrate or collide with the outer tube during rotation, potentially causing noise. In home environments, this can be uncomfortable for users.

[0003] Therefore, many vibration reduction and noise reduction structures for tubular motors have emerged. For example, the vibration reduction structure of a motor disclosed in Chinese Patent Application No. 202121565174.4 of this applicant includes a motor body and an outer tube sleeved on the outside of the motor body. One end of the motor body is the motor output shaft, which is connected in sequence to the first vibration reduction component and the output bracket, and is connected to the outer tube through the output bracket. The output shaft at one end of the output bracket is exposed at the end of the outer tube. The other end of the motor body is fixedly connected to the outer tube through the second vibration reduction component.

[0004] This type of motor vibration damping structure requires two sets of vibration damping components, and each vibration damping component includes multiple parts, resulting in a complex vibration damping structure and inconvenient installation.

[0005] Therefore, further improvements are needed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a tubular motor structure that simplifies the vibration reduction structure and reduces costs, addressing the shortcomings of the existing technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a tubular motor structure, comprising, along the axial direction of the tubular motor, an output head, a motor body, and a vibration damping connection assembly arranged sequentially, wherein the motor body and the vibration damping connection assembly are disposed inside an outer tube; characterized in that:

[0008] There is a gap between the outer surface of the peripheral wall of the motor body and the inner surface of the peripheral wall of the outer tube. The end of the motor body away from the output head is fixed to the outer tube through a vibration damping connection assembly. The end of the motor body near the output head is connected to the output head. The output head is fixed to the outer tube.

[0009] By creating a gap between the motor body and the outer tube without direct contact, and connecting the two ends of the motor body to the output head and the vibration damping connection assembly respectively, while the output head and the vibration damping connection assembly are fixed to the outer tube, only one set of vibration damping connection assembly is needed to reduce the vibration transmission between the motor body and the outer tube, thereby simplifying the structure and reducing the cost.

[0010] Furthermore, the vibration damping connection assembly includes a first connector, a second connector, and a fixing sleeve. The first connector is connected to both the motor body and the second connector, the second connector is connected to the fixing sleeve, and the fixing sleeve is fixed to the outer tube. At least one of the first and second connectors is a deformable structure. By using only the first connector, the second connector, and the fixing sleeve in the vibration damping connection assembly, and connecting the motor body and the fixing sleeve through only two connectors, the number of components is reduced, the structure is further simplified, and installation is also facilitated.

[0011] Furthermore, the first connector includes a first connecting body, and the second connector includes a second connecting body made of a flexible material. The first connecting body is connected to the motor body and the second connecting body, respectively. Thus, the second connector can function to reduce vibration and noise.

[0012] Furthermore, the first connector has a hollow structure. Therefore, when vibration occurs at the motor body end, the hollow portion of the first connector can slightly deform to offset the vibration and reduce its transmission.

[0013] Preferably, the first connector further includes perforations formed on the first connecting body, the perforations being annular and at least two in number, with each perforation spaced apart along the axial direction of the tubular motor. The multiple perforations reduce noise transmission, thus achieving a quieting effect.

[0014] Furthermore, the end of the first connecting body is inserted into the second connecting body, and the first connecting body has a hollow structure. The hollow structure of the first connector allows power cables, data cables, etc., to pass through and connect to the motor body.

[0015] Furthermore, in order to ensure a stable connection between the two connectors and prevent relative rotation, a first protrusion is formed on the outer periphery of the end where the first connector body connects to the second connector, and a second protrusion is formed on the second connector body at a position corresponding to the first protrusion. The second protrusion is formed by the radial outward protrusion of the peripheral wall of the second connector body, and the first protrusion is inserted into the second protrusion.

[0016] To further reduce vibration and noise, the fixing sleeve is inserted into the outer tube and fixed thereto. The second connecting body of the second connector is inserted into the fixing sleeve, while the second protrusion protrudes from the fixing sleeve and contacts the inner surface of the outer tube's peripheral wall.

[0017] Furthermore, the first connector has a hollow structure and also includes through holes formed on the first connecting body. There are at least two through holes, and each through hole is arranged at intervals along the axial direction of the tubular motor.

[0018] Each perforation includes one or more arc-shaped segments spaced apart circumferentially. When there is only one arc-shaped segment, a connecting rib is formed between the start and end points of the arc-shaped segment. When there are two or more arc-shaped segments, a connecting rib is formed between two adjacent arc-shaped segments. The connecting ribs on adjacent perforations are staggered. Thus, when the motor body vibrates, the hollowed-out portion of the first connector can deform to offset the vibration, reducing the transmission of vibration. Furthermore, the arrangement of the perforations provides better deformation performance and achieves a better vibration reduction effect.

[0019] Furthermore, to facilitate the fixing of the sheath and the outer tube, the sheath is inserted into the outer tube and fixed to the outer tube by a pin.

[0020] Compared with the prior art, the advantages of this utility model are as follows: By creating a gap between the motor body and the outer tube without direct contact, and connecting both ends of the motor body to the output head and the vibration damping connection assembly respectively, while the output head and the vibration damping connection assembly are fixed to the outer tube, only one set of vibration damping connection assembly is needed to reduce vibration transmission between the motor body and the outer tube, thus simplifying the structure and reducing costs; the vibration damping connection assembly only consists of a first connector, a second connector, and a fixing sleeve, and the motor body and the fixing sleeve are connected by only two connectors, reducing the number of parts, further simplifying the structure, and also facilitating installation; the first connector has a hollow structure, and when the motor body vibrates, the hollow part of the first connector can slightly deform to offset the vibration and reduce the transmission of vibration. The hollow structure formed by multiple perforations reduces noise transmission and plays a role in noise reduction. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the tubular motor structure according to the first embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the tubular motor structure with the outer tube hidden according to the first embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the vibration damping connection assembly of the tubular motor according to the first embodiment of this utility model;

[0024] Figure 4 This is an exploded structural diagram of the vibration damping connection assembly of the tubular motor according to the first embodiment of this utility model;

[0025] Figure 5This is a cross-sectional view of the tubular motor according to the first embodiment of the present invention;

[0026] Figure 6 This is a cross-sectional view (section and cross-section) of the tubular motor according to the first embodiment of this utility model. Figure 5 parallel);

[0027] Figure 7 This is a schematic diagram of the first connector of the vibration damping connection assembly of the tubular motor according to the second embodiment of the present invention. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0030] Example 1

[0031] See Figures 1-2 A tubular motor structure includes a motor body 1, a battery 2, a control circuit board 3, a travel head 4, and an output head 5. The motor body 1, battery 2, and control circuit board 3 are housed within an outer tube 6, while the travel head 4 and output head 5 partially extend into the outer tube 6. The output head 5 is used to connect to an external load. Along the axial direction of the tubular motor, the output head 5, motor body 1, battery 2, control circuit board 3, and travel head 5 are arranged sequentially. Preferably, the battery 2 is a lithium battery. Alternatively, the battery 2 can be omitted, and an external power supply can be used.

[0032] The peripheral wall of the motor body 1 and the outer tube 6, in the cross-section perpendicular to the axial direction of the tubular motor, are preferably both annular, see [reference]. Figure 5 and Figure 6Furthermore, there is a gap between the outer surface of the peripheral wall of the motor body 1 and the inner surface of the peripheral wall of the outer tube 6, so that the motor body 1 and the outer tube 6 do not directly contact each other. A vibration damping connection assembly is provided at the end of the motor body 1 near the battery 2, and the vibration damping connection assembly is fixed to the outer tube 6. The end of the motor body 1 near the output head 5 is connected to the output head 5, and the output head 5 is fixed to the outer tube 6. Thus, the motor body 1 can be stably fixed inside the outer tube 6, but does not directly contact the outer tube 6, thereby reducing the transmission of noise.

[0033] See Figures 2-4 The vibration damping connection assembly includes a first connector 71, a second connector 72, and a fixing sleeve 73. Along the axial direction of the tubular motor, the first connector 71 has two opposing ends, one end of which connects to an end of the motor body 1, and the other end connects to the second connector 72. The connection between the first connector 71 and the second connector 72 can be a sleeve-type connection, with the second connector 72 sleeved outside the first connector 71. The second connector 72 is at least partially inserted into the fixing sleeve 73.

[0034] The first connector 71 includes a first connector body 711 and through holes 712 formed on the first connector body 711, making the first connector 71 a hollow structure. The first connector body 711 is a hollow structure for the wires of the battery 2 and the control circuit board 3 to pass through and connect to the motor body 1. The through holes 712 are annular (non-closed rings), and there are at least two of them, which are spaced apart along the axial direction of the tubular motor. Each through hole 712 includes one or more arc-shaped segments 7121 arranged circumferentially. When there is only one arc-shaped segment 7121, a connecting rib 714 is formed between its starting point and ending point. When there are two or more arc-shaped segments 7121, a connecting rib 714 is formed between two adjacent arc-shaped segments 7121. In this embodiment, there are four through holes 712, and the connecting ribs 714 at corresponding positions on each through hole 712 are connected to each other as a whole (integratedly formed during processing), and the whole is parallel to the axial direction of the tubular motor. Therefore, when the motor body 1 vibrates, the portion of the first connector 71 that forms the perforation 712 can slightly deform to offset the vibration and reduce its transmission. Furthermore, the multiple perforations 712 reduce noise transmission, thus achieving a noise reduction effect.

[0035] A first protrusion 713 is formed on the outer periphery of the end where the first connecting body 711 connects to the second connecting member 72. At least two first protrusions 713 are arranged at intervals along the circumference of the first connecting body 711. The second connecting member 72 includes a second connecting body 721, on which a second protrusion 722 is formed at a position corresponding to the first protrusion 713. The second protrusion 722 is formed by radially protruding outward from the peripheral wall of the second connecting body 721. During installation, the end of the first connecting body 711 is inserted into the second connecting body 721, and the first protrusion 713 is engaged with the second protrusion 722. This ensures a stable connection between the two. Furthermore, the second connecting member 72 is made of a soft, deformable material, such as soft rubber, which further enhances its vibration damping and noise reduction properties.

[0036] The fixing sleeve 73 is inserted into the outer tube 6, and it can be press-fitted into the outer tube 6. The second connecting body 721 of the second connector 72 is inserted into the fixing sleeve 73, while the second protrusion 722 can protrude from the fixing sleeve 73 and contact the inner surface of the peripheral wall of the outer tube 6, so as to further play the role of vibration reduction and noise reduction. The outer tube 6 and the fixing sleeve 73 can be fixed to each other by means of a pin connection.

[0037] Example 2

[0038] See Figure 7 In this embodiment, the difference from Embodiment 1 is that the connecting ribs 714 on adjacent perforations 712 are misaligned and cannot be connected into a whole parallel to the axial direction of the tubular motor. Compared to Embodiment 1, the misalignment of the connecting ribs 714 allows the first connector 71 to have a larger deformation space, thereby providing better vibration damping performance.

Claims

1. A tubular motor structure, comprising, along the axial direction of the tubular motor, an output head (5), a motor body (1), and a vibration damping connection assembly arranged sequentially, wherein the motor body (1) and the vibration damping connection assembly are disposed within an outer tube (6); characterized in that: There is a gap between the outer surface of the peripheral wall of the motor body (1) and the inner surface of the peripheral wall of the outer tube (6). The end of the motor body (1) away from the output head (5) is fixed to the outer tube (6) through a vibration damping connection assembly. The end of the motor body (1) close to the output head (5) is connected to the output head (5). The output head (5) is fixed to the outer tube (6).

2. The tubular motor structure according to claim 1, characterized in that: The vibration damping connection assembly includes a first connector (71), a second connector (72), and a fixing sleeve (73). The first connector (71) is connected to the motor body (1) and the second connector (72) respectively. The second connector (72) is connected to the fixing sleeve (73), and the fixing sleeve (73) is fixed to the outer tube (6). At least one of the first connector (71) and the second connector (72) is a deformable structure.

3. The tubular motor structure according to claim 2, characterized in that: The first connector (71) includes a first connector body (711), and the second connector (72) includes a second connector body (721) made of a soft material. The first connector body (711) is connected to the motor body (1) and the second connector body (721) respectively.

4. The tubular motor structure according to claim 3, characterized in that: The first connector (71) has a hollow structure.

5. The tubular motor structure according to claim 4, characterized in that: The first connector (71) further includes through holes (712) formed on the first connecting body (711), the through holes (712) being annular and having at least two, each through hole (712) being spaced apart along the axial direction of the tubular motor.

6. The tubular motor structure according to claim 3, characterized in that: The end of the first connecting body (711) is inserted into the second connecting body (721), and the first connecting body (711) has a hollow structure.

7. The tubular motor structure according to claim 6, characterized in that: A first protrusion (713) is formed on the outer periphery of the end where the first connecting body (711) connects to the second connecting member (72). A second protrusion (722) is formed on the second connecting body (721) at a position corresponding to the first protrusion (713). The second protrusion (722) is formed by the radial outward protrusion of the peripheral wall of the second connecting body (721). The first protrusion (713) is inserted into the second protrusion (722).

8. The tubular motor structure according to claim 7, characterized in that: The fixing sleeve (73) is inserted into the outer tube (6) and fixed thereto. The second connecting body (721) of the second connector (72) is inserted into the fixing sleeve (73), while the second protrusion (722) is exposed out of the fixing sleeve (73) and contacts the inner surface of the peripheral wall of the outer tube (6).

9. The tubular motor structure according to claim 2, characterized in that: The first connector (71) has a hollow structure. The first connector (71) also includes through holes (712) formed on the first connecting body (711). There are at least two through holes (712), and each through hole (712) is arranged at intervals along the axial direction of the tubular motor. Each perforation (712) includes one or more arc segments (7121) arranged circumferentially. When there is only one arc segment (7121), a connecting rib (714) is formed between the start and end points of the arc segment (7121). When there are two or more arc segments (7121), a connecting rib (714) is formed between two adjacent arc segments (7121). The connecting ribs (714) on adjacent perforations (712) are staggered.

10. The tubular motor structure according to claim 2, characterized in that: The fixing sleeve (73) is inserted into the outer tube (6) and fixed to the outer tube (6) by a pin.

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