Heating handlebar of electric vehicle

Abstract

The utility model discloses an electric vehicle heating handle which comprises a fixing seat used for being fixedly installed on a vehicle body, an inner handle rotationally connected with the fixing seat, a handle sleeve fixed to the inner handle and an electric heating element, a deformation groove is formed in the side, facing the inner handle, of the fixing seat, and a baffle used for shielding the deformation groove is arranged at the end of the inner handle. A first positioning hole is formed in the wall of the deformation groove, a second positioning hole is formed in the baffle, a power line is wound around the inner wall of the deformation groove between the first positioning hole and the second positioning hole, one end of the power line penetrates out of the second positioning hole to supply power to the electric heating element, and the other end of the power line penetrates out of the first positioning hole to be connected with an external power source. Compared with an electric heating handle structure in the prior art, the electric heating handle structure has the advantages that the structure is greatly simplified, when the inner handle rotates, the power line expands outwards in the deformation groove, the two ends of the power line are kept static relative to the inner handle and the fixing base, and the service life of the power line is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric vehicle technical field especially, it relates to a kind of electric vehicle heating handlebar. BACKGROUND

[0002] Electric vehicle as common traffic tool, is widely used in daily life.

[0003] As the accessory of electric vehicle, electric vehicle handlebar is also extremely common, and as one of the progress of technology, heating function is added to electric vehicle handlebar, electric vehicle heating handlebar is the practical configuration of winter riding, and the holding comfort is improved by built-in heating element, while safety and convenience are considered.

[0004] Such as patent number for 202421276849.7 Chinese utility model patent discloses a kind of novel electric vehicle heating handlebar, including support and the rotating pipe that can be rotated relative to support, electric heating wire is wound and is formed with flange portion on one end on rotating pipe, handlebar outer skin is set on rotating pipe and is wrapped to electric heating wire, flange portion and support between are equipped with the power cord tray that is fixedly connected with flange portion, power cord for power supply to electric heating wire is coaxially arranged at least on the end surface of power cord tray towards support with power cord tray, when rotating pipe rotates, power cord tray is used to make the power cord arranged on power cord tray arc free expansion.

[0005] The electric vehicle heating handlebar structure above is complex, and production cost is high, and although the power cord for power supply is improved, there is still the problem of outward wire, so that the power cord is prone to aging and wear, which needs to be improved. SUMMARY

[0006] The utility model aims at solving one of the technical problems existing in prior art.

[0007] The application provides an electric vehicle heating handlebar, which comprises a fixing seat for being fixed to a vehicle body, an inner handlebar connected with the fixing seat, a handlebar sleeve fixed to the inner handlebar, and an electric heating element, characterized in that a deformation groove is arranged on one side of the fixing seat facing the inner handlebar, a baffle for shielding the deformation groove is arranged on the end of the inner handlebar, a first positioning hole is arranged on the groove wall of the deformation groove, a second positioning hole is arranged on the baffle, a power cord is wound around the inner groove wall between the first positioning hole and the second positioning hole, one end of the power cord is arranged to supply power to the electric heating element after penetrating out of the second positioning hole, and the other end of the power cord is connected with an external power source after penetrating out of the first positioning hole.

[0008] Preferably, a cavity is arranged on the fixing seat, the first positioning hole is communicated with the cavity, and a clamping assembly for clamping the power cord is arranged in the cavity.

[0009] Preferably, the clamping assembly comprises a first clamping block and a second clamping block fixed in the chamber, and a clamping groove is formed between the first clamping block and the second clamping block to pass through and clamp the power cord.

[0010] Preferably, the chamber inner wall is further provided with a wire outlet hole, one end of the wire outlet hole is provided on the outer wall of the ring of the fixed seat, and the other end faces the clamping groove, so that the power cord passes through the clamping groove and then passes out of the wire outlet hole, and the fixed seat is provided with an outer cover at the end away from the inner handle for opening and closing the chamber.

[0011] Preferably, the power cord is wound at least one turn around the inner groove wall of the deformation groove.

[0012] Preferably, the inner handle is in the shape of a circular column, the inner groove wall of the deformation groove extends into the inner ring wall of the inner handle to form an extension, one end of the extension passes out of the inner handle, the inner handle is rotationally arranged on the extension, and the end of the extension away from the fixed seat is provided with a limiting assembly for preventing the inner handle from sliding outwards.

[0013] Preferably, the limiting assembly comprises an end cover, a insertion slot provided on the end cover for inserting the extension, a fixing hole provided on the end cover and penetrating through the insertion slot, a inner groove provided in the middle of the fixed seat, the inner groove bottom extending into the extension, a cooperating fixing hole provided in the inner groove bottom, and a bolt member detachably installed at the fixing hole and the cooperating fixing hole.

[0014] Preferably, the insertion slot is provided with an anti-rotation assembly for avoiding relative rotation between the end cover and the end of the extension, the anti-rotation assembly comprises a first sector ring provided on the end of the inner handle and a second sector ring provided in the insertion slot, and the first sector ring and the second sector ring cooperatively form a ring.

[0015] Preferably, the end cover and the extension are provided with a reset spring assembly for resetting the inner handle after rotation, the reset spring assembly comprises a torsion spring, a first hole provided on the inner handle, and a second hole provided in the insertion slot, one end of the torsion spring is inserted into the first hole, and the other end is inserted into the second hole.

[0016] Preferably, the deformation groove is provided with a rotation limiting assembly for limiting the rotation angle of the inner handle, the rotation limiting assembly comprises a limiting block provided on the end of the inner handle and a sector ring groove provided in the deformation groove, and when the inner handle rotates on the fixed seat, the limiting block is inserted into the sector ring groove and rotates therein.

[0017] Compared with the existing electric heating handlebar structure, the structure of the electric handlebar of this application is greatly simplified, reducing the production and processing cost. At the same time, the two ends of the power cord are stuck in the first positioning hole and the second positioning hole, so that when the inner handlebar rotates, the power cord expands outward in the deformation groove, while its two ends remain stationary relative to the inner handlebar and the fixed seat, avoiding the stretching or outward wire phenomenon as in the prior art, and greatly improving the service life of the power cord.

[0018] The beneficial effects of this invention will be explained in detail in the embodiments, thereby making the beneficial effects more obvious. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application viewed from a 45° upward angle.

[0020] Figure 2 This is a three-dimensional structural diagram of an embodiment of this application viewed from a 45° top angle.

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixed base in the embodiments of this application.

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixing seat without the outer cover in the embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the main structure of the inner handle in the embodiment of this application.

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the inner handle in the embodiments of this application.

[0025] Figure 7 This is a schematic diagram of the specific structure of the fixed base and inner handle in the embodiments of this application.

[0026] Figure 8 This is a schematic diagram of the specific structure of the end cap in an embodiment of this application.

[0027] Figure 9 This is a three-dimensional structural diagram of an embodiment of this application viewed from below.

[0028] Figure 10 This is a schematic diagram of the three-dimensional structure of the embodiment of this application with the handlebars removed. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0032] Example 1:

[0033] like Figures 1-6 As shown, a heated handlebar for an electric vehicle includes a mounting base 1 for mounting and fixing to the vehicle body, an inner handlebar 2 rotatably connected to the mounting base 1, a handlebar sleeve 3 fixed to the inner handlebar 2, and an electric heating element. In a specific embodiment of this utility model, the mounting base 1 has a deformation groove 4 on the side facing the inner handlebar 2, and the end of the inner handlebar 2 has a baffle 5 for shielding the deformation groove 4. The groove wall of the deformation groove 4 has a first positioning hole 6, and the baffle 5 has a second positioning hole 7. A power cord 8 is wound around the inner wall of the deformation groove 4 between the first positioning hole 6 and the second positioning hole 7. One end of the power cord 8 passes through the second positioning hole 7 to supply power to the electric heating element, and the other end passes through the first positioning hole 6 to connect to an external power source.

[0034] Compared to existing electric electric handlebar structures, the structure of this application is greatly simplified, reducing production and processing costs. Furthermore, the two ends of the power cord 8 are secured in the first positioning hole 6 and the second positioning hole 7, causing the power cord 8 to expand outwards within the deformation groove 4 when the inner handlebar 2 rotates, while its two ends remain stationary relative to the inner handlebar 2 and the fixed base 1. When the inner handlebar 2 and handlebar sleeve 3 rotate in the opposite direction, the power cord 8 wraps inwards around the inner wall of the deformation groove 4, preventing the power cord 8 from stretching or extending outwards as in existing technologies, thus greatly improving the service life of the power cord 8.

[0035] Example 2:

[0036] The difference from Embodiment 1 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, the fixing base 1 is provided with a chamber 9, the first positioning hole 6 communicates with the chamber 9, and a clamping component for clamping the power cord 8 is provided in the chamber 9.

[0037] like Figure 4 As shown, the chamber 9 is located on the side of the fixed base 1 away from the inner handle 2. The end of the power cord 8 away from the heating element passes through the first positioning hole 6 for connection to an external power source. The purpose of setting the chamber 9 in the fixed base 1 is to provide a further space and to further clamp and fix the power cord 8 in this space. That is, a clamping assembly for clamping the power cord 8 is provided in the chamber 9.

[0038] Example 3:

[0039] The difference from Embodiment 2 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, the clamping assembly includes a first locking block 10 and a second locking block 11 fixed in the chamber 9, and a slot 12 is formed between the first locking block 10 and the second locking block 11 for the power cord 8 to pass through and clamp.

[0040] like Figure 4 As shown, a slot 12 is formed between the first card block 10 and the second card block 11. The slot 12 has a U-shaped opening structure, and the top width of the slot is greater than the bottom width. This structure makes it easy to press the power cord 8 down into the bottom of the slot from the opening and lock it in place.

[0041] In a specific embodiment of this utility model, a wire outlet hole 13 is also provided on the inner wall of the chamber 9. One end of the wire outlet hole 13 is opened on the outer wall of the ring of the fixed base 1, and the other end faces the slot 12, so that the end of the power cord 8 away from the first positioning hole 6 passes through the slot 12 and then exits from the wire outlet hole 13. The end of the fixed base 1 away from the inner handle 2 is provided with an outer cover for opening and closing the chamber 9.

[0042] The outer cover facilitates the installation of the power cord 8 in the chamber 9. After installation, the outer cover is put on. The structure of the outlet hole 13 on the inner wall of the chamber 9 facilitates the guidance of the power cord 8. That is, one end of the outlet hole 13 is opened on the outer wall of the ring of the fixing seat 1, and the other end faces the slot 12. The power cord 8 passes through the slot 12 and then exits smoothly from the outlet hole 13.

[0043] Example 4:

[0044] The difference from Embodiment 3 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, the power line 8 is wound around the inner wall of the deformation groove 4 at least once.

[0045] To facilitate the expansion of the power cord 8 inside the deformation groove 4, it is designed to wrap around the inner wall of the deformation groove 4 at least once. This facilitates the expansion of the power cord 8 while preventing it from being stretched or twisted, thereby further improving the service life of the wire.

[0046] Example 5:

[0047] The difference from Embodiment 3 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, the inner handle 2 is in the shape of a circular cylinder, and the inner wall of the deformation groove 4 extends into the inner ring wall of the inner handle 2 to form an extension 21. The extension 21 protrudes from one end of the inner handle 2, and the inner handle 2 is rotatably mounted on the extension 21. The end of the extension 21 away from the fixed base 1 is provided with a limiting component to prevent the inner handle 2 from sliding outward.

[0048] like Figure 6 As shown, the inner handle 2 has a groove on its outer surface for installing an electric heating element, and the power cord 8 enters the outer surface of the inner handle 2 from the second positioning hole 7 for power supply. The inner handle 2 is rotatably mounted on the extension 21 and is limited by a limiting component at the end of the extension 21 away from the fixed base 1, so that it is limited on the extension 21 for rotation.

[0049] Example 6:

[0050] The difference from Embodiment 5 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, the limiting component includes an end cap 22 and a slot 23 formed on the end cap 22 for the insertion of the extension portion 21. The end cap 22 is provided with a fixing hole 24 that passes through the slot 23. The fixing base 1 has an inner groove 25 in the middle, the bottom of the inner groove 25 extends into the extension portion 21, and a mating fixing hole 26 is provided at the bottom of the inner groove 25. Bolts can be detachably installed at the fixing hole 24 and the mating fixing hole 26.

[0051] As a preferred embodiment, the limiting component includes an end cap 22, the structure of which is as follows: Figures 7-10 As shown, the end cap 22 is generally shaped like a bottle cap. A slot 23 is provided on the end cap 22 for the extension 21 to be inserted. A fixing hole 24 is provided on the end cap 22, passing through the slot 23. An inner groove 25 is provided in the middle of the fixing base 1. The inner groove 25 reduces the material usage of the fixing base 1, lowering production costs, and can also be used to connect with the metal tube or handlebar mounting point on the electric vehicle, thereby installing the fixing base 1 onto the electric vehicle. Figure 7 As can be seen, mounting holes for mounting onto electric vehicles are also provided on mounting base 1, which are not numbered. Figure 7 The lower left part, Figure 10The lower left portion is also shown, with the bottom of the inner groove 25 extending into the extension 21. A mating fixing hole 26 is provided at the bottom of the inner groove 25. Bolts can be detachably installed at the fixing hole 24 and the mating fixing hole 26. These bolts can be threaded rods. If a threaded rod is used, the mating fixing hole 26 needs to be a hole with internal threads. In this embodiment, a nut and bolt structure is used. Figure 9 As can be seen, one end of the screw passes through the fixing hole 24 and the mating fixing hole 26 in sequence, and is then constrained and fixed by the nut. This achieves the fixation of the end cover 22.

[0052] Example 7:

[0053] The difference from Embodiment 6 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, the slot 23 is provided with an anti-rotation component for preventing relative rotation between the end cap 22 and the end of the extension 21. The anti-rotation component includes a first fan ring 27 disposed at the end of the inner handle 2 and a second fan ring 28 disposed in the slot 23. The first fan ring 27 and the second fan ring 28 cooperate with each other to form a ring.

[0054] After the end cap 22 is installed onto the end of the extension 21, an anti-rotation component is provided in the slot 23 to further fix and limit its movement, preventing relative rotation between the end cap 22 and the end of the extension 21. The anti-rotation component includes a first fan ring 27 at the end of the inner handle 2 and a second fan ring 28 in the slot 23. The first fan ring 27 and the second fan ring 28 cooperate to form a ring. Thus, during installation, when the end of the extension 21 is inserted into the slot 23, the first fan ring 27 is inserted into the notch of the second fan ring 28, thereby locking the end cap 22 in a rotational manner. Then, a nut and screw structure is used to further fix it laterally, making the overall installation stable.

[0055] Example 8:

[0056] The difference from Embodiment 7 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, a reset spring assembly for resetting the inner handle 2 after rotation is provided between the end cap 22 and the extension 21. The reset spring assembly includes a torsion spring 31, a first hole 32 provided on the inner handle 2, and a second hole 33 provided in the slot 23. One end of the torsion spring 31 is inserted into the first hole 32, and the other end is inserted into the second hole 33.

[0057] For the sake of overall structural rationality, the return spring assembly is positioned between the end cap 22 and the extension 21, such as... Figure 7 and Figure 8As shown, the return spring assembly includes a torsion spring 31, a first hole 32 on the inner handle 2, and a second hole 33 in the slot 23. One end of the torsion spring 31 is inserted into the first hole 32, i.e., one end of the torsion spring 31 is fixed relative to the inner handle 2, while the other end of the torsion spring 31 is inserted into the second hole 33, i.e., the other end of the torsion spring 31 is fixed relative to the end cap 22. After the end cap 22 is installed, the end cap 22 and the extension 21 are relatively fixed. As the inner handle 2 rotates, the torsion spring 31 rotates, and the hand gripping the handle sleeve 3 feels resistance. At this time, the torsion spring 31 deforms. As the hand releases, the torsion spring 31 returns to its original position, causing the inner handle 2 to rotate and return to its original position. This can be seen from... Figure 7 and Figure 8 It is clear that the structure of the first fan ring 27 not only serves to cooperate with the second fan ring 28, but also stabilizes the torsion spring 31. Preferably, the fan ring angle of the first fan ring 27 is at least greater than 180 degrees. This setting can surround the torsion spring 31 as much as possible, while exposing part of it so that one end of the torsion spring 31 can pass through and enter the first hole 32. It is also clear that the length of the first fan ring 27 is greater than the length of the second fan ring 28, so that one end of the torsion spring 31 can be exposed and inserted into the first hole 32.

[0058] Example 9:

[0059] The difference from Embodiment 8 is that, in addition to including the structural features of the aforementioned embodiments, in this specific embodiment of the present invention, the deformation groove 4 is provided with a rotation limiting component for limiting the rotation angle of the inner handle 2. The rotation limiting component includes a limiting block 41 disposed at the end of the inner handle 2 and a fan ring groove 42 disposed in the deformation groove 4. When the inner handle 2 rotates on the fixed base 1, the limiting block 41 is inserted into the fan ring groove 42 and rotates therein.

[0060] The rotation limit component of the inner handle 2 is set at the deformation groove 4, such as Figure 3 and Figure 6 As shown, the limiting block 41 connected to the inner handle 2 is inserted into the fan ring groove 42 of the deformation groove 4 when the inner handle 2 rotates. With the rotation of the inner handle 2, the fan ring groove 42 limits the two ends of the limiting block 41, thus allowing the inner handle 2 to rotate within a fixed angle. Simultaneously, the rotation is reset by the return spring assembly in embodiment 8. The overall structural arrangement of this application is relatively reasonable, and the structure is simple with low production cost. Furthermore, in... Figure 6 As can be seen, the specific shape of the limiting block 41 is also fan-shaped with a groove in the middle. This groove is used to reduce the amount of material, and the limiting of the limiting block 41 can be achieved by its two ends. Therefore, setting this groove can further reduce material costs and at the same time realize the function of limiting rotation.

[0061] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0062] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A heated handlebar for an electric vehicle, comprising a mounting base (1) for mounting and fixing to a vehicle body, an inner handlebar (2) rotatably connected to the mounting base (1), a handlebar sleeve (3) fixed to the inner handlebar (2), and an electric heating element, characterized in that, The fixed base (1) is provided with a deformation groove (4) on the side facing the inner handle (2). The end of the inner handle (2) is provided with a baffle (5) for shielding the deformation groove (4). A first positioning hole (6) is provided on the groove wall of the deformation groove (4). A second positioning hole (7) is provided on the baffle (5). A power cord (8) is wound around the inner groove wall of the deformation groove (4) between the first positioning hole (6) and the second positioning hole (7). One end of the power cord (8) passes through the second positioning hole (7) to supply power to the heating element, and the other end passes through the first positioning hole (6) to connect to an external power source.

2. The heated handlebar for an electric vehicle according to claim 1, characterized in that, The fixed base (1) is provided with a cavity (9), the first positioning hole (6) is connected to the cavity (9), and a clamping component for clamping the power cord (8) is provided in the cavity (9).

3. A heated handlebar for an electric vehicle according to claim 2, characterized in that, The clamping assembly includes a first locking block (10) and a second locking block (11) fixed in the chamber (9), and a slot (12) is formed between the first locking block (10) and the second locking block (11) for the power line (8) to pass through and clamp.

4. A heated handlebar for an electric vehicle according to claim 3, characterized in that, The inner wall of the chamber (9) is also provided with a wire outlet hole (13). One end of the wire outlet hole (13) is opened on the outer wall of the ring of the fixed base (1), and the other end faces the slot (12), so that the end of the power cord (8) away from the first positioning hole (6) passes through the slot (12) and then exits from the wire outlet hole (13). The fixed base (1) is provided with an outer cover for opening and closing the chamber (9) at the end away from the inner handle (2).

5. A heated handlebar for an electric vehicle according to any one of claims 1-4, characterized in that, The power line (8) is wound around the inner wall of the deformation groove (4) at least once.

6. A heated handlebar for an electric vehicle according to claim 5, characterized in that, The inner handle (2) is cylindrical in shape. The inner wall of the deformation groove (4) extends into the inner ring wall of the inner handle (2) to form an extension (21). The extension (21) protrudes from one end of the inner handle (2). The inner handle (2) is rotatably mounted on the extension (21). The end of the extension (21) away from the fixed base (1) is provided with a limiting component to prevent the inner handle (2) from sliding outward.

7. A heated handlebar for an electric vehicle according to claim 6, characterized in that, The limiting component includes an end cap (22) and a slot (23) on the end cap (22) for the extension (21) to be inserted. The end cap (22) is provided with a fixing hole (24) that passes through the slot (23) from top to bottom. The fixing seat (1) is provided with an inner groove (25) in the middle. The bottom of the inner groove (25) extends into the extension (21). A mating fixing hole (26) is provided at the bottom of the inner groove (25). Bolts can be detachably installed at the fixing hole (24) and the mating fixing hole (26).

8. A heated handlebar for an electric vehicle according to claim 7, characterized in that, The slot (23) is provided with an anti-rotation component to prevent relative rotation between the end cap (22) and the end of the extension (21). The anti-rotation component includes a first fan ring (27) disposed at the end of the inner handle (2) and a second fan ring (28) disposed in the slot (23). The first fan ring (27) and the second fan ring (28) cooperate with each other to form a ring.

9. A heated handlebar for an electric vehicle according to claim 7, characterized in that, A reset spring assembly for resetting the inner handle (2) after rotation is provided between the end cap (22) and the extension (21). The reset spring assembly includes a torsion spring (31), a first hole (32) provided on the inner handle (2) and a second hole (33) provided in the slot (23). One end of the torsion spring (31) is inserted into the first hole (32) and the other end is inserted into the second hole (33).

10. A heated handlebar for an electric vehicle according to claim 1, characterized in that, The deformation groove (4) is provided with a rotation limiting component for limiting the rotation angle of the inner handle (2). The rotation limiting component includes a limiting block (41) provided at the end of the inner handle (2) and a fan ring groove (42) provided in the deformation groove (4). When the inner handle (2) rotates on the fixed seat (1), the limiting block (41) is inserted into the fan ring groove (42) and rotates therein.

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