Connecting structure of ceiling fan suspender and motor shaft

Abstract

The invention relates to a connecting structure of a ceiling fan suspender and a motor shaft, which belongs to the technical field of ceiling fan installation and comprises a fastener for connecting the suspender and the motor shaft, the suspender forms a contracted pipe section matched with the size of the motor shaft through a contracted pipe process, the motor shaft is inserted into the contracted pipe section of the suspender, and the motor shaft is connected with the motor shaft under the connecting action of the fastener. And direct connection between the contracted pipe section of the suspender and the motor shaft is realized. The ceiling fan has the advantages that on the premise that safety and stability of the ceiling fan are guaranteed, direct connection of the hanging rod and the motor shaft is achieved, and installation is fast.

Description

Technical Field

[0001] The present application relates to the technical field of ceiling fan installation, and in particular to a connection structure between a ceiling fan suspension rod and a motor shaft. Background Art

[0002] As a common household appliance, ceiling fans are widely used in home and commercial environments. In recent years, with the continuous improvement of people's living standards, the market requirements for ceiling fans have become higher and higher, especially in terms of safety, convenience and durability.

[0003] In existing ceiling fan designs, there are various ways to connect the hanger and the motor shaft, but the most commonly used method is to use a transition piece or accessory to achieve the connection between the two; although these traditional connection methods can ensure a certain support function, there are many problems in actual use, such as complex installation and inconvenient maintenance. Summary of the invention

[0004] In order to achieve direct connection between a suspension rod and a motor shaft while ensuring the safety and stability of the ceiling fan and to have the characteristic of quick installation, the present application provides a connection structure between a suspension rod and a motor shaft of a ceiling fan.

[0005] The present application provides a connection structure between a ceiling fan suspension rod and a motor shaft using the following technical solution: A connection structure between a ceiling fan hanger and a motor shaft includes a fastener for connecting the hanger and the motor shaft. The hanger is formed into a reduced tube section matching the size of the motor shaft through a tube shrinking process. The motor shaft is plugged into the reduced tube section of the hanger. Under the connecting action of the fastener, a direct connection between the reduced tube section of the hanger and the motor shaft is achieved.

[0006] By adopting the above technical solution, under the connecting action of the fastener, the direct connection between the reduced tube section of the hanger and the motor shaft is achieved, and a fast, safe and durable connection between the hanger and the motor shaft is achieved; at the same time, the installation and disassembly process of the ceiling fan is greatly simplified, so that ordinary consumers can easily complete the assembly without professional tools, saving time and labor costs.

[0007] Preferably, the fastener is a bolt, and a through hole for installing the bolt is provided on the circumferential side of the shrink tube section of the hanger rod.

[0008] By adopting the above technical solution, this connection method not only simplifies the installation process, allowing ordinary consumers to easily complete the assembly, but also improves the reliability and stability of the connection, reduces the loosening caused by vibration and other reasons, and ensures the personal and property safety of the user; at the same time, this method avoids the use of intermediate accessories, further reducing production and maintenance costs.

[0009] Preferably, the fastener is a threaded pin, which radially penetrates the reduced tube section of the suspension rod and the motor shaft, and a nut is threadedly connected on the rod portion of the threaded pin, and the suspension rod is limited between the nut and the head of the threaded pin.

[0010] By adopting the above technical solution, this design not only ensures a firm connection between the boom and the motor shaft, but also effectively reduces looseness caused by vibration and other reasons, thereby improving the reliability and safety of the connection; in addition, the structure is simple and easy to install, and does not require additional tools, making it easy for ordinary consumers to operate by themselves, further improving the practicality of the product and user experience.

[0011] Preferably, a limit pin is provided on the rod portion of the threaded pin, and the limit pin limits the nut so that the nut cannot move in a direction away from the suspension rod.

[0012] By adopting the above technical solution, the limit pin can effectively limit the movement of the nut away from the hanger rod, which not only further enhances the stability of the connection structure, but also effectively reduces the loosening caused by vibration or long-term use, thereby improving the safety and reliability of the ceiling fan; at the same time, this design simplifies the installation process, so that ordinary consumers do not need to worry about the nut slipping, and can complete the assembly more conveniently and quickly.

[0013] Preferably, the fasteners include a group of bolts and a group of threaded pins, and two groups of through holes for installing the bolts and the threaded pins are provided on the circumferential side of the shrink tube section of the hanger rod.

[0014] By adopting the above technical solution, the combined use of bolts and threaded pins enhances the stability of the connection and effectively reduces the loosening caused by vibration and other reasons; and the two sets of different types of fasteners (bolts and threaded pins) make the installation more flexible, and ordinary consumers can easily complete the assembly without professional tools, which greatly saves time and labor costs; at the same time, by directly connecting the hanger and the motor shaft, the wear of the intermediate links is reduced, thereby extending the overall service life of the ceiling fan and reducing the frequency and cost of subsequent maintenance.

[0015] Preferably, the fasteners are a group of bolts and a group of protrusions, a group of symmetrically arranged through holes are provided on the circumferential side of the shrinkage section of the hanger, a group of the protrusions are symmetrically arranged and recessed on the circumferential side of the shrinkage section of the hanger, a groove engaged with the protrusions is opened on the circumferential side of the motor shaft, and a group of the bolts are connected to the group of through holes in a counter-connection manner.

[0016] By adopting the above technical solution, the protrusions are engaged with the grooves on the motor shaft, which ensures the tightness and vibration resistance of the connection and reduces the looseness caused by vibration; and the bolts are connected to the through holes in a counter-attacking manner, so that ordinary consumers can easily complete the assembly without professional tools, saving time and labor costs; at the same time, the direct connection method avoids the wear problem caused by the middleware, extends the service life of the key components of the ceiling fan, and reduces the frequency and cost of subsequent maintenance.

[0017] Preferably, the fasteners are a group of threaded pins and a group of protrusions, a group of symmetrically arranged through holes are provided on the circumferential side of the shrinkage section of the hanger, a group of the protrusions are symmetrically arranged and recessed on the circumferential side of the shrinkage section of the hanger, a groove engaged with the protrusions is provided on the circumferential side of the motor shaft, and the threaded pins are connected to the shrinkage section of the hanger through the through holes.

[0018] By adopting the above technical solution, the combined design of the threaded pin and the protrusion ensures a tight connection between the suspension rod and the motor shaft, effectively reducing looseness caused by vibration and other reasons, thereby improving the safety and stability of the ceiling fan; and the user can easily complete the installation of the threaded pin with simple tools, and the snap-on design of the protrusion and the groove further simplifies the installation steps, allowing ordinary consumers to quickly assemble or disassemble the ceiling fan without professional knowledge; at the same time, this direct connection method avoids the use of middleware, reduces the number and complexity of parts, and reduces the cost and frequency of daily maintenance.

[0019] Preferably, the tube shrinking process of the suspension rod is a non-opening tube shrinking process, and the suspension rod is subjected to tube shrinking treatment by a tube shrinking fixture and then punched and shaped.

[0020] By adopting the above technical solution, the non-opening shrinking tube process ensures the flatness and stability of the contact surface between the hanger and the motor shaft, enhances the vibration resistance of the connection part, and reduces the loosening caused by vibration; and through standard punching and shaping processes, the hanger and the motor shaft can be quickly and accurately connected without the need for complicated tools and steps, which greatly saves installation time and reduces labor costs; at the same time, the non-opening shrinking tube process avoids the risk of fatigue fracture caused by stress concentration at the opening, thereby extending the service life of key components and reducing the frequency and cost of subsequent maintenance.

[0021] Preferably, the tube shrinking process of the suspension rod is an open tube shrinking process, and the suspension rod is subjected to tube shrinking treatment by a tube shrinking fixture and then punched or punched with stretched convex points and shaped.

[0022] By adopting the above technical solution, the open tube shrinking process ensures the precise fit and firm connection between the boom and the motor shaft through punching or punching plus stretching and shaping. This design not only improves the connection strength and reliability, but also simplifies the production process and reduces manufacturing costs. At the same time, the open tube shrinking process makes installation and disassembly more convenient, further improving the user experience.

[0023] Preferably, a retaining sleeve for limiting the position of the fastener is sleeved on the circumferential side of the suspension rod, and a locking assembly for locking the retaining sleeve on the circumferential side of the suspension rod is provided on the retaining sleeve.

[0024] By adopting the above technical solution, the anti-retraction sleeve can effectively limit the sliding of the fastener on the side of the boom, thereby further enhancing the connection stability between the boom and the motor shaft; the locking assembly can quickly position and fix the anti-retraction sleeve during the installation process, effectively reducing the displacement of the anti-retraction sleeve during use, and improving the reliability and safety of the overall structure.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Under the connection of the fastener, the shrink tube section of the suspension rod and the motor shaft are directly connected, achieving a fast, safe and durable connection between the suspension rod and the motor shaft; at the same time, the installation and disassembly process of the ceiling fan is greatly simplified, so that ordinary consumers can easily complete the assembly without professional tools, saving time and labor costs; 2. This connection method not only simplifies the installation process, allowing ordinary consumers to easily complete the assembly, but also improves the reliability and stability of the connection, reduces the loosening phenomenon caused by vibration and other reasons, and ensures the personal and property safety of users; at the same time, this method avoids the use of intermediate accessories, further reducing production and maintenance costs; 3. The anti-retraction sleeve can effectively limit the sliding of the fastener on the side of the boom, thereby further enhancing the connection stability between the boom and the motor shaft; the locking assembly can quickly position and fix the anti-retraction sleeve during the installation process, effectively reducing the displacement of the anti-retraction sleeve during use, and improving the reliability and safety of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0027] Figure 2 It is an exploded view of the suspension rod and the motor shaft of Example 1 of the present application.

[0028] Figure 3 It is an exploded view of the suspension rod and the motor shaft of Example 2 of the present application.

[0029] Figure 4It is an exploded view of the suspension rod and the motor shaft of Example 3 of the present application.

[0030] Figure 5 It is an exploded view of the suspension rod and the motor shaft of Example 4 of the present application.

[0031] Figure 6 It is an exploded view of the suspension rod and the motor shaft of Example 5 of the present application.

[0032] Figure 7 It is a cross-sectional view of the suspension rod, motor shaft and anti-retraction sleeve of Example 6 of the present application.

[0033] Figure 8 yes Figure 7 A partial enlarged view of part A.

[0034] Fig. 9 yes Figure 7 A partial enlarged view of part B.

[0035] Fig.10 It is a schematic diagram of the structure of the locking sleeve of the present application.

[0036] Explanation of the reference numerals: 1. suspension rod; 11. motor shaft; 111. threaded groove; 112. positioning groove; 113. groove; 12. reduced tube section; 121. through hole; 122. protrusion; 123. opening; 2. bolt; 3. threaded pin; 31. nut; 32. limit pin; 4. retaining sleeve; 41. support ring; 42. abutment sleeve; 421. inclined surface; 422. rotating part; 423. spacer; 424. installation cavity; 43. fixing ring; 431. locking plate; 432. clearance hole; 433. abutment part; 44. accommodating groove; 441. upper limit groove; 442. lower limit groove; 5. screw rod; 51. abutment joint; 52. connecting rod; 53. spring piece; 54. limit block. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-10 This application is described in further detail.

[0038] Example 1 The present application discloses a connection structure between a ceiling fan suspension rod and a motor shaft. Figure 1 and Figure 2The connection structure between the ceiling fan hanger and the motor shaft includes a hanger 1, a motor shaft 11 and a fastener for connecting the hanger 1 and the motor shaft 11. The hanger 1 is formed into a reduced tube section 12 by a tube shrinking process. The tube shrinking process of the hanger 1 is a non-opening tube shrinking process. The hanger 1 is shrunk by a tube shrinking fixture and then punched and shaped, so that two groups of symmetrically arranged through holes 121 are formed on the peripheral side of the reduced tube section 12 of the hanger 1; the reduced tube section 12 of the hanger 1 is matched with the motor shaft 11 in size to ensure that the reduced tube section 12 of the hanger 1 is accurately fitted with the peripheral side of the motor shaft 11; the motor shaft 11 is directly connected to the reduced tube section 12 of the hanger 1 by fasteners.

[0039] Specifically, a thread groove 111 is provided on the circumferential side of the motor shaft 11, and the number of the thread grooves 111 is consistent with the number of the through holes 121 and corresponds one to one. In this embodiment, the fastener is a bolt 2. When the motor shaft 11 is inserted into the reduced tube section 12 of the suspension rod 1, and the through hole 121 is connected to the thread groove 111 at the corresponding position, the bolt 2 is passed through the through hole 121 and threadedly connected to the thread groove 111, thereby realizing a direct connection between the reduced tube section 12 of the suspension rod 1 and the motor shaft 11.

[0040] The bolt 2 can be made of stainless steel, which has high corrosion resistance and fatigue resistance; the bolt 2 can also be made of high-strength carbon steel, which has good processing performance while ensuring strength.

[0041] In order to enable the hanger 1 to be more stably connected to the motor shaft 11, four through holes 121 are provided, and the four through holes 121 are grouped in pairs. The number of bolts 2 is consistent with the number of through holes 121 and corresponds one to one, so that two bolts 2 located on the same horizontal plane can be connected to the shrinkage section 12 of the hanger 1 in a counter-connection manner, thereby enabling the hanger 1 to be more stably connected to the motor shaft 11.

[0042] After the motor shaft 11 is inserted into the reduced tube section 12 of the suspension rod 1, in order to achieve the preliminary positioning of the motor shaft 11 and the reduced tube section 12 of the suspension rod 1, so that the through hole 121 can correspond to the position of the thread groove 111, so as to facilitate the connection of the bolt 2 to the through hole 121 and the thread groove 111. A positioning groove 112 is provided on the peripheral side of the motor shaft 11, and the positioning groove 112 is located below the thread groove 111, and the positioning groove 112 is misaligned with the thread groove 111; the inner side wall of the reduced tube section 12 of the suspension rod 1 is integrally formed with a positioning convex portion corresponding to the position of the positioning groove 112; when the motor shaft 11 is inserted into the reduced tube section 12 of the suspension rod 1, until the positioning convex portion is engaged with the positioning groove 112, the preliminary positioning of the reduced tube section 12 of the suspension rod 1 and the motor shaft 11 is achieved, and at this time, the through hole 121 is connected to the thread groove 111 corresponding to the position.

[0043] Through the precise matching of the bolt 2 and the fine control of the shrinking process, the connection structure not only realizes a fast, safe and durable connection between the suspension rod 1 and the motor shaft 11, but also greatly simplifies the installation and disassembly process, so that ordinary consumers can easily complete the assembly without professional tools. In addition, due to the high reliability of the bolt 2 and the effective support of the shrinking process, the connection structure can also effectively reduce the loosening phenomenon caused by vibration and other reasons, ensuring the personal and property safety of users.

[0044] Example 2 Reference Figure 3 The difference between this embodiment and the above embodiment is that the fastener uses two sets of threaded pins 3 instead of bolts 2, and the shrinking process of the suspension rod 1 is the same as that of the embodiment 1. Specifically, the threaded pin 3 radially penetrates the motor shaft 11 through the through hole 121, and the rod of the threaded pin 3 is threadedly connected with a nut 31, and the suspension rod 1 is limited between the nut 31 and the head of the threaded pin 3.

[0045] The threaded pin 3 can be made of stainless steel, which has excellent corrosion resistance and a long service life; the threaded pin 3 can also be made of high-strength aluminum alloy, which is light in weight and high in strength, and is suitable for weight-sensitive applications; at the same time, the surface of the threaded pin 3 can be plated, such as zinc plating or nickel plating, to enhance its wear resistance and oxidation resistance.

[0046] In order to reduce the possibility of the nut 31 loosening due to vibration and falling off the threaded pin 3, a center hole is formed through the rod of the threaded pin 3, and a limit pin 32 is inserted into the center hole. The limit pin 32 limits the nut 31 so that the nut 31 cannot move away from the suspension rod 1. The connection structure formed by the threaded pin 3 not only realizes an efficient connection between the suspension rod 1 and the motor shaft 11, but also significantly improves the stability and reliability of the connection.

[0047] Example 3 Reference Figure 4 The difference between this embodiment and the above embodiment is that the fasteners are a set of bolts 2 and a set of threaded pins 3, and the shrinking process of the suspension rod 1 is the same as that of the embodiment 1. A set of bolts 2 are connected to the shrinking section 12 of the suspension rod 1 and the motor shaft 11 in a counter-connection manner, and the specific connection method of the bolts 2 is the same as that of the bolts 2 in the embodiment 1; the connection method of the threaded pins 3 is the same as that of the threaded pins 3 in the embodiment 2.

[0048] The combined action of the bolt 2 and the threaded pin 3 can achieve double fixation between the hanger 1 and the motor shaft 11, thereby greatly improving the stability and reliability of the connection; the bolt 2 is mainly used to provide initial tightening force, while the threaded pin 3 plays an auxiliary fixing role. The combination of the two can effectively reduce loosening caused by external impact or long-term vibration.

[0049] Example 4 Reference Figure 5 The difference between this embodiment and the above embodiment is that: the fastener adopts a combination of a group of bolts 2 and a group of protrusions 122, and the tube shrinking process of the hanger 1 is an open tube shrinking process. The hanger 1 is shrunk by a tube shrinking fixture and then punched or punched and stretched and shaped. The shrinking section 12 of the hanger 1 is formed with two symmetrically arranged openings 123, two symmetrically arranged protrusions 122 and two symmetrically arranged through holes 121. The protrusions 122 are recessed in the shrinking section 12 of the hanger 1, and the protrusions 122 and the through holes 121 are distributed up and down. The arrangement of the through holes 121 and the protrusions 122 can be flexibly adjusted to meet different connection requirements; the opening 123 is located between the two protrusions 122.

[0050] The motor shaft 11 is provided with grooves 113 corresponding to the positions of the protrusions 122 on the circumferential side thereof, and the number of the grooves 113 is consistent with the number of the protrusions 122 and corresponds one to one; when the protrusions 122 correspond to the grooves 113, the protrusions 122 are engaged with the grooves 113 to achieve the positioning of the suspension rod 1 and the motor shaft 11. A set of bolts 2 are connected to the reduced tube section 12 of the suspension rod 1 and the motor shaft 11 in a counter-connection manner, and the specific connection manner of the bolts 2 is the same as the connection manner of the bolts 2 in Example 1.

[0051] By using a set of bolts 2 in combination with the protrusions 122, the connection structure not only realizes multiple fixations between the suspension rod 1 and the motor shaft 11, but also greatly improves the firmness and reliability of the connection, thereby ensuring the safety and stability of the ceiling fan.

[0052] Example 5 Reference Figure 6 The difference between this embodiment and the above embodiment is that: the fastener adopts a combination of a threaded pin 3 and a protrusion 122, but the tube shrinking process of the hanger 1 is the same as the tube shrinking process of Example 4, so that two symmetrically arranged openings 123, two symmetrically arranged protrusions 122 and two symmetrically arranged through holes 121 are formed on the side of the shrinking section 12 of the hanger 1, the protrusion 122 is recessed on the side of the shrinking section 12 of the hanger 1, and the protrusion 122 and the through hole 121 are distributed up and down, and the arrangement of the through hole 121 and the protrusion 122 can be flexibly adjusted to meet different connection requirements; the opening 123 is located between the two protrusions 122.

[0053] Specifically, grooves 113 corresponding to the positions of the protrusions 122 are opened on the circumferential side of the motor shaft 11, and the number of grooves 113 is consistent with the number of protrusions 122 and corresponds one to one; when the positions of the protrusions 122 and the grooves 113 correspond, the protrusions 122 and the grooves 113 are engaged to achieve the positioning of the suspension rod 1 and the motor shaft 11.

[0054] The design and material selection of the threaded pin 3 are the same as those described in Example 2, and the connection method of the threaded pin 3 is the same as that of Example 2; the threaded pin 3 is mainly used to provide rigid physical support, while the protrusion 122 increases additional friction, and together they form a more robust connection structure, thereby greatly improving the stability and reliability of the connection.

[0055] Example 6 Refer to 7 and Figure 8 The difference between this embodiment and the above-mentioned embodiment is that a backstop sleeve 4 for limiting the fastener is provided on the circumferential side of the suspension rod 1, and a locking assembly is provided on the backstop sleeve 4. The locking end of the locking assembly is connected to the suspension rod 1 to lock the backstop sleeve 4 on the circumferential side of the suspension rod 1.

[0056] Reference Figure 8 and Fig. 9 The inner side wall of the anti-retraction sleeve 4 is integrally formed with a radially extending support ring 41, and the inner ring side of the support ring 41 is slidably connected to the peripheral side of the suspension rod 1. The locking assembly includes a locking sleeve coaxially arranged with the suspension rod 1 and connected to the top surface of the support ring 41, an abutment sleeve 42 coaxially arranged with the suspension rod 1 and threadedly connected to the top end of the anti-retraction sleeve 4, and a limiting member arranged on the abutment sleeve 42 and connected to the anti-retraction sleeve 4; the abutment sleeve 42 is rotated to make the abutment sleeve 42 abut against the locking sleeve, so that the locking sleeve hugs the suspension rod 1, thereby locking the anti-retraction sleeve 4 on the peripheral side of the suspension rod 1, and limiting the fastener by the inner side of the anti-retraction sleeve 4 to play a role in stopping the fastener from retreating.

[0057] Reference Figure 8 and Fig.10 The locking sleeve includes a fixing ring 43 fixedly connected to the top surface of the supporting ring 41 and a locking piece 431 fixedly connected to the top surface of the fixing ring 43 and located on the inner ring side of the fixing ring 43. A plurality of locking pieces 431 are provided, and the plurality of locking pieces 431 are evenly spaced along the inner ring side of the fixing ring 43; there are clearance holes 432 between adjacent locking pieces 431, and an abutment portion 433 inclined downward is integrally formed on the outer top of each locking piece 431; a truncated cone-shaped inclined surface 421 is provided on the inner side of the abutment sleeve 42 and located at the bottom of the abutment sleeve 42, and the inclination direction of the inclined surface 421 is consistent with the inclination direction of the abutment portion 433.

[0058] The abutment sleeve 42 is thereby rotated. Since the abutment sleeve 42 is threadedly connected to the anti-retraction sleeve 4, the abutment sleeve 42 drives the inclined surface 421 to move downward, and the downwardly moved inclined surface 421 abuts against the abutment portion 433, so that the inner side of the locking plate 431 abuts against the peripheral side of the suspension rod 1, thereby locking the anti-retraction sleeve 4 on the peripheral side of the suspension rod 1.

[0059] Reference Figure 8 and Fig. 9 An annular rotating portion 422 is integrally formed on the top of the circumferential side of the abutment sleeve 42, a spacer sleeve 423 is fixedly connected to the bottom surface of the rotating portion 422, an annular receiving groove 44 is opened on the top surface of the stop sleeve 4, one end of the spacer sleeve 423 away from the rotating portion 422 extends into the receiving groove 44 and slides with the receiving groove 44; a limit member is arranged in the rotating portion 422 and the spacer sleeve 423.

[0060] The inner side wall of the accommodating groove 44 is provided with two upper limit grooves 441 and two lower limit grooves 442 which are symmetrically arranged and located in the same horizontal plane. Both the upper limit grooves 441 and the lower limit grooves 442 are annular, and the upper limit groove 441 is located above the lower limit groove 442. An installation cavity 424 is provided inside the spacer sleeve 423, and the limiting member includes a screw rod 5 which vertically passes through the rotating part 422 and the spacer sleeve 423 and extends into the installation cavity 424, a butt joint 51 which is fixedly connected to the bottom end of the screw rod 5 and is located in the installation cavity 424, a connecting rod 52 which is fixedly connected in the installation cavity 424, a spring piece 53 which is fixedly connected to the peripheral side of the connecting rod 52, and two limiting blocks 54 which are symmetrically arranged on the spring piece 53; the screw rod 5 is threadedly connected to the rotating part 422, the butt joint 51 has an isosceles trapezoidal cross section, and the end of the butt joint 51 with a larger cross-sectional area is arranged upward; the cross section of the spring piece 53 is V-shaped and its opening is arranged in a direction, and the bottom of the inner side wall of the spring piece 53 is fixedly connected to the peripheral side of the connecting rod 52; the two limiting blocks 54 are both located on the outer side of the spring piece 53, and the two limiting blocks 54 are symmetrically fixed at the opening of the spring piece 53, and the end of the limiting block 54 away from the spring piece 53 passes through the installation cavity 424 and extends to the outside of the spacer sleeve 423.

[0061] In order to facilitate the rotation of the screw rod 5, the top end of the screw rod 5 is fixedly connected to a handle located above the rotating portion 422 (see Figure 7 ). Thus, when the inclined surface 421 of the abutting sleeve 42 abuts against the abutting portion 433 so that the locking piece 431 holds the boom 1 tightly, at this time, the position of the limiting block 54 corresponds to the position of the lower limiting groove 442, and the screw rod 5 is rotated by the handle, and the screw rod 5 drives the abutting joint 51 to move downward until the abutting joint 51 abuts against the spring sheet 53, so that the opening of the spring sheet 53 expands outward, so that the end of the limiting block 54 away from the spring sheet 53 passes through the installation cavity 424 and extends into the lower limiting groove 442, thereby limiting the abutting sleeve 42, so that the abutting sleeve 42 cannot be reversely rotated to move upward.

[0062] When the inclined surface 421 of the abutment sleeve 42 is separated from the abutment portion 433, at this time, the position of the limit block 54 corresponds to the position of the upper limit groove 441, and the screw rod 5 is rotated by the handle to drive the abutment head 51 to move downward until the abutment head 51 abuts against the spring piece 53, so that the opening of the spring piece 53 expands outward, so that the end of the limit block 54 away from the spring piece 53 passes through the installation cavity 424 and extends to the upper limit groove 441, thereby limiting the abutment sleeve 42, so that the abutment sleeve 42 cannot rotate in the opposite direction to move upward, thereby reducing the occurrence of the abutment sleeve 42 falling off the stop sleeve 4.

[0063] Two marking lines can be engraved on the circumferential side of the boom 1, and the two marking lines correspond to the positions of the limit block 54 moving to the upper limit groove 441 and the lower limit groove 442 respectively; so that the operator can judge whether the limit block 54 corresponds to the position of the upper limit groove 441 or the lower limit groove 442 at this time.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A connection structure between a ceiling fan suspension rod and a motor shaft, characterized in that: The invention comprises a fastener for realizing the connection between a suspension rod (1) and a motor shaft (11); the suspension rod (1) is formed into a reduced tube section (12) whose size matches that of the motor shaft (11) through a tube shrinking process; the motor shaft (11) is plugged into the reduced tube section (12) of the suspension rod (1); and under the connection action of the fastener, the reduced tube section (12) of the suspension rod (1) and the motor shaft (11) are directly connected.

2. The connection structure between the ceiling fan suspension rod and the motor shaft according to claim 1, characterized in that: The fastener is a bolt (2), and a through hole (121) for installing the bolt (2) is provided on the peripheral side of the shrink tube section (12) of the suspension rod (1).

3. The connection structure between the ceiling fan suspension rod and the motor shaft according to claim 1, characterized in that: The fastener is a threaded pin (3), which radially penetrates the reduced tube section (12) of the suspension rod (1) and the motor shaft (11), and a nut (31) is threadedly connected on the rod portion of the threaded pin (3), and the suspension rod (1) is limited between the nut (31) and the head of the threaded pin (3).

4. The connection structure between the ceiling fan suspension rod and the motor shaft according to claim 3, characterized in that: A limiting pin (32) is provided on the rod portion of the threaded pin (3), and the limiting pin (32) limits the nut (31) so that the nut (31) cannot move in a direction away from the suspension rod (1).

5. The connection structure between the ceiling fan suspension rod and the motor shaft according to claim 1, characterized in that: The fasteners include a group of bolts (2) and a group of threaded pins (3), and two groups of through holes (121) for installing the bolts (2) and the threaded pins (3) are provided on the circumferential side of the shrink tube section (12) of the suspension rod (1).

6. The connection structure between the ceiling fan suspension rod and the motor shaft according to claim 1, characterized in that: The fasteners are a group of bolts (2) and a group of protrusions (122); a group of symmetrically arranged through holes (121) are provided on the circumferential side of the contraction tube section (12) of the suspension rod (1); a group of protrusions (122) are symmetrically arranged and recessed on the circumferential side of the contraction tube section (12) of the suspension rod (1); a groove (113) for engaging with the protrusions (122) is provided on the circumferential side of the motor shaft (11); and a group of bolts (2) are connected to the group of through holes (121) in a counter-connection manner.

7. The connection structure between the ceiling fan suspension rod and the motor shaft according to claim 1, characterized in that: The fasteners are a group of threaded pins (3) and a group of protrusions (122); a group of symmetrically arranged through holes (121) are provided on the peripheral side of the shrinkage tube section (12) of the suspension rod (1); a group of protrusions (122) are symmetrically arranged and recessed on the peripheral side of the shrinkage tube section (12) of the suspension rod (1); a groove (113) engaged with the protrusions (122) is provided on the peripheral side of the motor shaft (11); and the threaded pins (3) are connected to the shrinkage tube section (12) of the suspension rod (1) through the through holes (121).

8. A connection structure between a ceiling fan suspension rod and a motor shaft according to any one of claims 2, 3 or 5, characterized in that: The tube shrinking process of the suspension rod (1) is a non-opening tube shrinking process, and the suspension rod (1) is subjected to tube shrinking treatment by a tube shrinking fixture and then punched and shaped.

9. A connection structure between a ceiling fan suspension rod and a motor shaft according to any one of claims 6 or 7, characterized in that: The tube shrinking process of the suspension rod (1) is an open tube shrinking process. The suspension rod (1) is subjected to tube shrinking treatment by a tube shrinking fixture and then punched or punched with a stretching convex point (122) and shaped.

10. The connection structure between the ceiling fan suspension rod and the motor shaft according to claim 1, characterized in that: A retaining sleeve (4) for limiting the position of a fastener is sleeved on the circumferential side of the suspension rod (1), and a locking assembly for locking the retaining sleeve (4) on the circumferential side of the suspension rod (1) is provided on the retaining sleeve (4).

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