Manual adjustment structure of motor

Abstract

A motor manual adjustment structure comprises a motor shell provided with an installation end face, a through hole formed in the installation end face, a rotor piece arranged in the motor shell, an outer sleeve, a ball head rod and a transmission rod, the transmission rod is provided with an inner sleeve, an insertion hole is formed in the tail end of the ball head rod in the axial direction, a ball head is arranged at the head end of the ball head rod, and the insertion hole of the ball head rod is connected to the inner sleeve in a sleeved mode. The tail end of the outer sleeve is rotatably connected to the mounting end face, at least two through grooves are distributed in the side circumferential wall of the head end of the outer sleeve in the circumferential direction, the side circumferential wall of the head end of the outer sleeve is divided into at least two arc-shaped parts through the through grooves, a plurality of clamping teeth distributed in the circumferential direction are arranged on the inner circumferential wall of each arc-shaped part, and a tooth set is arranged on the outer circumferential wall of the ball rod. The outer sleeve is connected to the outer side of the ball head rod in a sleeving mode and enables the clamping teeth to be elastically connected to the tooth set in a clamped mode, so that in the power-off or maintenance state, the outer sleeve is manually rotated, the outer sleeve drives the ball head rod to synchronously rotate, the ball head rod axially moves relative to the transmission rod, and manual adjustment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor structures, in particular to a motor manual adjustment structure. Background Art

[0002] Due to their stable operation and simple control, stepper motors have been increasingly used in new energy vehicles in recent years. For example, they are installed inside new energy vehicles to adjust the position of multimedia devices, or integrated into the lighting system of new energy vehicles to adjust the direction and angle of the lights.

[0003] The main structure of a stepper motor includes a motor housing, a stator member disposed in the motor housing, a rotor member rotatably disposed in the stator member, and a transmission rod driven by the rotor member; when the rotor member rotates, the transmission rod can achieve axial reciprocating movement. For the specific operating principle, please refer to patents such as CN203617873U and CN205792167U. The end of the transmission rod located outside the motor housing is usually integrated with a ball head assembly, which is used to cooperate with the headlight reflector to adjust the headlight illumination angle. However, after the stepper motor is assembled, the initial angle of the transmission rod may be offset to a certain extent, and the existing stepper motor structure makes it difficult to manually calibrate the initial angle of the transmission rod, affecting subsequent use. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that after the dimming stepper motor in the prior art is assembled, the initial angle of the transmission rod may be offset to a certain extent, and the structure of the existing stepper motor makes it difficult to manually calibrate the initial angle of the transmission rod, affecting subsequent use.

[0005] The cam is secured to the outer wall of the drive shaft and has a locking mechanism which extends outwardly past the locking mechanism, the locking mechanism being secured to the cam face and locking to the outer wall of the drive shaft when the cam is secured.

[0006] Compared with the prior art, the above scheme provides a through groove on the side circumferential wall of the head end of the outer sleeve, which divides the side circumferential wall of the head end of the outer sleeve into at least two arc-shaped parts, and the inner circumferential wall of the arc-shaped part is provided with a plurality of latching teeth distributed along the circumferential direction, and the latching teeth are elastically connected to the tooth group. Therefore, when the transmission rod needs to be manually calibrated after assembly is completed, the outer sleeve is manually rotated, and the outer sleeve will drive the ball head rod to rotate synchronously, so that the ball head rod produces axial movement relative to the transmission rod, thereby realizing calibration adjustment of the transmission rod; and when the ball head of the ball head rod moves to the extreme position or the position against the reflector, the axial movement of the ball head rod is restricted, and when the torque applied to the outer sleeve is greater than the maximum torque that the latching teeth and the tooth group can withstand due to the elastic engagement, the latching teeth slip relative to the tooth group; in other words, when the latching teeth of the outer sleeve and the tooth group of the ball head rod slip relative to each other, it means that the ball head of the ball head rod has moved to the extreme position; in addition, the design of the through groove on the outer sleeve can prevent the arc-shaped part of the outer sleeve from cracking and damage.

[0007] In an improved solution, the outer peripheral wall of the head end of the ball head rod is provided with guide teeth corresponding to the through grooves one by one. The guide teeth are used to cooperate with the through grooves during the process of the outer sleeve being sleeved onto the outside of the ball head rod to achieve a guiding effect on the outer sleeve. During installation, the inner sleeve is usually connected to the rotor part first, and then the socket of the ball head rod is sleeved onto the inner sleeve, and finally the outer sleeve is sleeved onto the outside of the ball head rod. Therefore, the guide teeth can cooperate with the through grooves during the installation process of the outer sleeve being sleeved onto the outside of the ball head rod to achieve a guiding effect on the outer sleeve, thereby facilitating the assembly of the outer sleeve.

[0008] In an improved solution, the width of the through groove on the side close to the tail end of the outer sleeve is greater than the width of the through groove on the side close to the head end of the outer sleeve, so that the arc portion has better deformation ability.

[0009] In an improved solution, the tooth group includes two teeth arranged at intervals, and the teeth extend axially from the tail end of the ball head rod to the head end of the ball head rod. A tooth groove is formed between the two teeth of the tooth group for a single latching tooth to engage, thereby improving the stability of the elastic latching between the tooth group and the latching tooth.

[0010] In an improved solution, the number of the through grooves is three and they are evenly distributed on the side wall of the head end of the outer sleeve, so that the head end of the outer sleeve forms three arc-shaped portions, and the outer wall of the ball head rod has four tooth groups, two of which are engaged with the latching teeth of the same arc-shaped portion, and the other two tooth groups are respectively engaged with the latching teeth of the remaining two arc-shaped portions, so that the latching teeth can withstand a larger torque after being elastically engaged with the tooth groups.

[0011] In an improved solution, the outer peripheral wall of the inner sleeve is provided with an external thread, and the hole wall of the socket is provided with an asymmetric thread. The ball head rod is screwed to the outside of the inner sleeve through the asymmetric thread of the socket, thereby ensuring that the socket of the ball head rod will not be reversed when screwed to the inner sleeve through the setting of the asymmetric thread.

[0012] In an improved solution, the mounting end face is provided with a plurality of claws distributed around the outer sleeve, and the outer peripheral wall of the tail end of the outer sleeve is provided with an annular groove. The claws are clamped into the annular groove to achieve axial limitation of the outer sleeve, thereby ensuring that the tail end of the outer sleeve can rotate relative to the mounting end face while achieving convenient assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall schematic diagram of a motor manual adjustment structure;

[0014] Figure 2 This is a top view schematic diagram of a motor manual adjustment structure;

[0015] Figure 3 For the Figure 2 Schematic cross-sectional view of the AA section line;

[0016] Figure 4 A schematic diagram of a ball head rod with a motor manual adjustment structure;

[0017] Figure 5 A bottom view of a ball rod with a motor manual adjustment structure (i.e., the tail end of the ball rod);

[0018] Figure 6 This is a schematic diagram of an outer sleeve of a motor manual adjustment structure.

[0019] Description of reference numerals:

[0020] 1. Motor housing; 11. Mounting end face; 12. Through hole; 13. Clamping claw; 2. Outer sleeve; 21. Through groove; 22. Arc-shaped portion; 23. Clamping teeth; 24. Annular groove; 3. Ball head rod; 31. Ball head; 32. Socket; 321. Asymmetrical screw thread; 33. Tooth group; 34. Guide tooth; 4. Transmission rod; 5. Inner sleeve. DETAILED DESCRIPTION

[0021] It should be understood by those skilled in the art that the following embodiments are merely intended to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific applications.

[0022] In the following descriptions of the embodiments, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0023] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] See also Figures 1-6 The embodiment of the present invention provides a motor manual adjustment structure, comprising a motor housing 1 with a mounting end surface 11, the mounting end surface 11 having a through hole 12, a rotor member disposed in the motor housing 1, an outer sleeve 2, a ball rod 3 and a transmission rod 4, the rear end of the transmission rod 4 being connected to the rotor member and the front end being provided with an inner sleeve 5 extending outward from the through hole 12, the rear end of the ball rod 3 being provided with an insertion hole 32 along the axial direction and the front end being provided with a ball head 31, the insertion hole 32 of the ball rod 3 being provided with a ball head 31, It is sleeved onto the inner sleeve 5, and the tail end of the outer sleeve 2 is rotatably connected to the mounting end face 11 and the side wall of the head end is circumferentially provided with at least two through grooves 21, and the through grooves 21 divide the side wall of the head end of the outer sleeve 2 into at least two arc-shaped portions 22, and the inner wall of the arc-shaped portion 22 is provided with a plurality of latching teeth 23 distributed along the circumferential direction, and the outer wall of the ball head rod 3 is provided with a tooth group 33, and the outer sleeve 2 is sleeved onto the outer side of the ball head rod 3 and makes the latching teeth 23 elastically snap into the tooth group 33.

[0026] The above scheme is achieved by providing a through groove on the side circumferential wall of the head end of the outer sleeve, the through groove divides the side circumferential wall of the head end of the outer sleeve into at least two arc-shaped parts, and the inner circumferential wall of the arc-shaped part is provided with a plurality of latching teeth distributed along the circumferential direction, the latching teeth are elastically latched to the tooth group, so that when manual calibration is required, the outer sleeve is manually rotated, and the outer sleeve will drive the ball head rod to rotate synchronously, causing the ball head rod to move axially relative to the transmission rod to achieve calibration adjustment; and when the ball head of the ball head rod moves to the extreme position or the position against the reflector, the axial movement of the ball head rod is restricted, and when the torque applied to the outer sleeve is greater than the maximum torque that the latching teeth and the tooth group can withstand due to the elastic latching, the latching teeth slip relative to the tooth group; in other words, when the latching teeth of the outer sleeve and the tooth group of the ball head rod slip relative to each other, it means that the ball head of the ball head rod has moved to the extreme position; in addition, the design of the through groove on the outer sleeve can prevent the arc-shaped part of the outer sleeve from cracking and damage.

[0027] As an improvement to this embodiment, the outer peripheral wall of the head end of the ball head rod 3 is provided with guide teeth 34 corresponding to the through grooves 21 one by one. The guide teeth 34 are used to cooperate with the through grooves 21 during the process of the outer sleeve 2 being sleeved onto the outside of the ball head rod 3 to achieve a guiding effect on the outer sleeve 2. During installation, the inner sleeve 5 is usually connected to the rotor part first, and then the socket 32 of the ball head rod 3 is sleeved onto the inner sleeve 5, and finally the outer sleeve 2 is sleeved onto the outside of the ball head rod 3. Therefore, the guide teeth 34 can cooperate with the through grooves 21 during the installation process of the outer sleeve 2 being sleeved onto the outside of the ball head rod 3, thereby achieving a guiding effect on the outer sleeve 2 and facilitating the assembly of the outer sleeve 2.

[0028] Furthermore, the width of the through slot 21 on the side close to the rear end of the outer sleeve 2 is greater than the width of the through slot 21 on the side close to the front end of the outer sleeve 2, thereby enabling the arc-shaped portion 22 to have better deformation capability.

[0029] In this embodiment, the tooth group 33 includes two teeth arranged at intervals, and the teeth extend axially from the tail end of the ball head rod 3 to the head end of the ball head rod 3. A single latch 23 can be engaged between the two teeth of the tooth group 33, thereby improving the stability of the elastic latching between the tooth group 33 and the latch 23.

[0030] In this embodiment, there are three through-slots 21 evenly spaced along the lateral wall of the head end of the outer sleeve 2, forming three arcuate portions 22 at the head end of the outer sleeve 2. The outer wall of the ball stud 3 includes four tooth groups 33, two of which engage with the latching teeth 23 of the same arcuate portion 22, while the other two tooth groups 33 engage with the latching teeth 23 of the other two arcuate portions 22, respectively. This allows the latching teeth 23 and tooth groups 33 to elastically engage and withstand high torque. It should be understood that the number of through-slots 21 and tooth groups 33 can be increased or decreased as needed.

[0031] In this embodiment, the outer peripheral wall of the inner sleeve 5 is provided with an external thread, and the hole wall of the socket 32 is provided with an asymmetric thread 321. The ball head rod 3 is screwed to the outer side of the inner sleeve 5 through the asymmetric thread 321 of the socket 32, thereby ensuring that the socket 32 of the ball head rod 3 will not be reversed when screwed to the inner sleeve 5 through the setting of the asymmetric thread 321.

[0032] In this embodiment, the mounting end face 11 is provided with a plurality of claws 13 distributed around the outer sleeve 2, and the outer peripheral wall of the tail end of the outer sleeve 2 is provided with an annular groove 24. The claws 13 are clamped into the annular groove 24 to achieve axial limitation of the outer sleeve 2, thereby ensuring that the tail end of the outer sleeve 2 can rotate relative to the mounting end face 11 while achieving convenient assembly.

[0033] It should be noted that, in the description of this application, the terms "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application. All directional indications (such as up, down, left, right, front, back, inside and outside) are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0034] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0035] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A motor manual adjustment structure, comprising a motor housing (1) provided with a mounting end surface (11), wherein the mounting end surface (11) is provided with a through hole (12), and a rotor member is provided in the motor housing (1), characterized in that: The invention also includes an outer sleeve (2), a ball head rod (3) and a transmission rod (4), wherein the tail end of the transmission rod (4) is connected to the rotor component and the head end is provided with an inner sleeve (5) extending outward from the through hole (12), the tail end of the ball head rod (3) is provided with a socket (32) along the axial direction and the head end is provided with a ball head (31), the socket (32) of the ball head rod (3) is sleeved to the inner sleeve (5), and the tail end of the outer sleeve (2) is rotatably connected to the mounting end surface (11) The side circumferential wall of the head end is provided with at least two through grooves (21) distributed along the circumferential direction, the through grooves (21) divide the side circumferential wall of the head end of the outer sleeve (2) into at least two arc-shaped parts (22), the inner circumferential wall of the arc-shaped part (22) is provided with a plurality of latching teeth (23) distributed along the circumferential direction, the outer circumferential wall of the ball head rod (3) is provided with a tooth group (33), the outer sleeve (2) is sleeved on the outer side of the ball head rod (3) and the latching teeth (23) are elastically latched to the tooth group (33).

2. The motor manual adjustment structure according to claim 1, characterized in that: The outer peripheral wall of the head end of the ball head rod (3) is provided with guide teeth (34) corresponding to the through grooves (21) one by one. The guide teeth (34) are used to cooperate with the through grooves (21) when the outer sleeve (2) is sleeved onto the outer side of the ball head rod (3) to achieve a guiding effect on the outer sleeve (2).

3. The motor manual adjustment structure according to claim 1 or 2, characterized in that: The slot width of the through slot (21) on the side close to the tail end of the outer sleeve (2) is greater than the slot width on the side close to the head end of the outer sleeve (2).

4. The motor manual adjustment structure according to claim 1, characterized in that: The tooth group (33) comprises two teeth arranged at intervals, the teeth extending axially from the tail end of the ball head rod (3) to the head end of the ball head rod (3), and a single latching tooth (23) can be engaged between the two teeth of the tooth group (33).

5. The motor manual adjustment structure according to claim 1, characterized in that: The number of the through grooves (21) is three and they are evenly spaced and distributed on the side peripheral wall of the head end of the outer sleeve (2), so that the head end of the outer sleeve (2) forms three arc-shaped portions (22). The number of tooth groups (33) on the outer peripheral wall of the ball head rod (3) is four, two of which are engaged with the latching teeth (23) of the same arc-shaped portion (22), and the other two tooth groups (33) are respectively engaged with the latching teeth (23) of the other two arc-shaped portions (22).

6. The motor manual adjustment structure according to claim 1, characterized in that: The outer peripheral wall of the inner sleeve (5) is provided with an external thread, the hole wall of the insertion hole (32) is provided with an asymmetric thread (321), and the ball head rod (3) is screwed to the outer side of the inner sleeve (5) through the asymmetric thread (321) of the insertion hole (32).

7. The motor manual adjustment structure according to claim 1, characterized in that: The mounting end surface (11) is provided with a plurality of The claws (13) are distributed around the outer sleeve (2), and the outer peripheral wall of the tail end of the outer sleeve (2) is provided with an annular groove (24). The claw (13) is engaged with the annular groove (24) to achieve axial limitation of the outer sleeve (2).

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