Cutter head sliding mechanism, reciprocating driving mechanism and hair clipper thereof

Abstract

The utility model relates to the technical field of hair clippers, in particular to a tool bit sliding mechanism, a reciprocating driving mechanism and a hair clipper comprising the tool bit sliding mechanism, the tool bit sliding mechanism comprises a sliding assembly connected with a tool bit and a shell used for arranging the sliding assembly, and the sliding assembly comprises a sliding piece and at least two guide rails which are arranged side by side and connected with the sliding piece to limit the moving direction of the sliding piece. The guide rail is installed on the shell, the tool bit is connected with the sliding part so that the tool bit can be driven to reciprocate when the sliding part reciprocates in the axial direction of the guide rail, and the problems of vibration and noise during use of a tool bit sliding mechanism of an existing hair clipper are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hair clippers, in particular to a cutter head sliding mechanism, a reciprocating driving mechanism and a hair clipper thereof. Background Art

[0002] Existing hair clippers mainly include a movable cutter head, a cutter head sliding mechanism and a reciprocating drive mechanism. For example, the patent application with application number: 201110251874.0, entitled "Vibrating Linear Actuator", adopts a magnetic swing motor as a reciprocating drive mechanism, and cooperates with a swing arm as a cutter head sliding mechanism to drive the movable cutter head to swing back and forth. There is also a method of using a motor in combination with an eccentric wheel as a reciprocating drive mechanism and a cutter head sliding mechanism to drive the movable cutter head to swing back and forth, such as patent application 202020627349.9, entitled "A Horizontal Motion Cutter Head Device and Hair Clipper". Regardless of which method is used, when the reciprocating drive mechanism drives the movable cutter head to perform reciprocating motion through the cutter head sliding mechanism, its cutter head sliding mechanism always has the problem of relatively excessive vibration during the use of the hair clipper, affecting the quietness and user experience. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a cutter head sliding mechanism, a reciprocating drive mechanism and a hair clipper thereof, which solve the problems of vibration and noise of the cutter head sliding mechanism of the existing hair clipper during use.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a cutter head sliding mechanism, including a sliding assembly connected to the cutter head and a shell for setting the sliding assembly, the sliding assembly includes a sliding part and at least two guide rails arranged in parallel and connected to the sliding part to limit the moving direction of the sliding part, the guide rail is installed on the shell, and the cutter head is connected to the sliding part to drive the cutter head to reciprocate when the sliding part moves back and forth along the axial direction of the guide rail.

[0005] Furthermore, the sliding member includes a main body and a connecting arm provided on the main body for connecting to a plurality of guide rails;

[0006] The connecting arm is fixedly connected to the guide rail, and a sliding hole is provided on the housing, and the guide rail slides correspondingly in the sliding hole;

[0007] Or the connecting arm is slidably connected to the guide rail, and the guide rail is fixed on the shell.

[0008] By adopting the above technical solution, when the connecting arm is fixedly connected to the guide rail, its main body slides back and forth along the axial direction of the guide rail, driving the guide rail to slide in the sliding hole, so that the contact force points between the cutter head and the sliding part can be evenly distributed to both ends of the guide rail, thereby avoiding the problem of relatively serious wear of the traditional slider sliding on the guide rail, and effectively improving the service life of the product.

[0009] Furthermore, the sliding hole and the guide rail sleeve are provided with a spherical bushing.

[0010] By adopting the above technical solution, the design of the spherical sleeve allows the guide rail to deflect freely within a certain angle range to adapt to possible slight misalignment or angular deviation problems, and to compensate for installation errors or slight bending of the shaft to a certain extent, thereby achieving the concentricity of the two guide rails and the sliding sleeves at both ends, which helps to improve the smoothness and stability of the displacement of the sliding part on the sliding sleeve through the guide rail.

[0011] Furthermore, an elastic pre-tightening member is provided between the outer periphery of the spherical sleeve and the inner wall of the sliding hole, so as to tighten the spherical sleeve and the shaft hole while allowing the spherical sleeve to rotate.

[0012] By adopting the above technical solution, the elastic preloaded part design can allow the spherical sleeve to deflect after squeezing the elastic preloaded part, which helps to increase the free deflection of the guide rail within a certain angle range, and to a certain extent compensate for the installation error or slight bending of the shaft, so that the two guide rails and the sliding sleeves at both ends remain concentric, which helps to improve the smoothness and stability of the displacement of the sliding part on the sliding sleeve through the guide rail. At the same time, the elastic preloaded part can also position and fix the spherical sleeve.

[0013] Furthermore, the elastic preload member includes a contact portion connected to the inner wall of the sliding hole and an elastic portion arranged around the contact portion, and the elastic portion is elastically pressed against the spherical sleeve.

[0014] By adopting the above technical solution, the setting of the elastic part has the advantage of facilitating the positioning of the spherical sleeve, while allowing the spherical sleeve to squeeze the elastic part and then bend elastically to allow the spherical sleeve to rotate. The setting of the contact part facilitates the connection with the sliding hole.

[0015] Furthermore, among the plurality of connecting arms, any one is rigidly connected to the guide rail, and the remaining connecting arms are elastically connected to the guide rail.

[0016] By adopting the above technical solution, one of the guide rails is made of rigid material, and the other is elastically connected to the guide rail. In this way, the elastic deformation of the elastic connecting arm is used to compensate for the non-parallel dimensional deviation of the two slide rails, which can avoid the system from getting stuck and can make the sliding block and the sliding rod always in a tensioned state, which has the effect of shock absorption and noise reduction, and the product is quieter and smoother when running.

[0017] Furthermore, two guide rails are provided, which are arranged in parallel, and one of the connecting arms is rigidly connected to the guide rail, and the other is elastically connected to the guide rail.

[0018] By adopting the above technical solution, the two guide rails are arranged side by side in parallel, which ensures the smooth reciprocating movement of the sliding member. At the same time, the elastic connection method can also be used to achieve the above-mentioned avoidance of the sliding member from sliding and getting stuck.

[0019] Furthermore, it is characterized in that a first connecting shaft is provided on the main body, and the first connecting shaft is connected to the cutter head.

[0020] By adopting the above technical solution, the first connecting shaft can easily drive the cutter head to move when performing reciprocating motion, and then the reciprocating motion of the cutter head is utilized to achieve the shaving function.

[0021] Furthermore, the cutter head is provided with an axial hole that cooperates with the first connecting shaft, and the two form an axial hole fit.

[0022] By adopting the above technical solution, the shaft-hole matching method and the connection method are simpler, and the disassembly, assembly and maintenance of the two components are also convenient.

[0023] A reciprocating mechanism includes the above-mentioned movable knife sliding mechanism. The reciprocating drive mechanism includes a motor and a transmission component. The transmission component is used to convert the rotational motion of the component into the reciprocating linear motion of the sliding member.

[0024] By adopting the above technical solution, the motor has a small size and large transmission power, and is more suitable for use in hair clippers when matched with the transmission components.

[0025] Furthermore, the transmission assembly includes an eccentric wheel, a connecting seat and a second connecting shaft. The eccentric wheel is driven by a motor and is rotatably connected to the connecting seat. One end of the second connecting shaft is connected to a sliding member, and the other end is connected to an end of the connecting seat away from the eccentric wheel.

[0026] By adopting the above technical solution and setting the connecting seat, the annular motion of the eccentric wheel can be converted into the reciprocating motion of the sliding member on the guide rail driven by the second connecting shaft. The setting of the connecting seat is relative to the traditional method of directly driving the reciprocating motion of the movable cutter head by the eccentric wheel. The vibration of the hair clipper during operation is smaller, and the problem of the eccentric wheel being directly set on the movable cutter head, which may easily damage the movable cutter head, is avoided.

[0027] Furthermore, the connecting seat and / or the sliding member are rotatably connected to the second connecting shaft, and an elastic tensioning member is provided between the connecting seat and the sliding member for elastic tensioning after the two are connected via the second connecting shaft.

[0028] By adopting the above technical solution, the elastic tensioning member can maintain a tensioned state between the sliding member and the connecting seat, thereby avoiding the presence of structural gaps between the two, which would cause vibration and noise problems when the hair clipper is running, and improving the transmission tightness and quietness between the connecting seat and the sliding member during movement.

[0029] Furthermore, a first connecting hole and a second connecting hole are provided on the connecting seat, the second connecting hole is plugged into the second connecting shaft, and the first connecting hole is rotatably connected to the eccentric wheel.

[0030] By adopting the above technical solution, the opening of the corresponding connecting holes facilitates the connection between the connecting shaft and the eccentric wheel as well as the second connecting shaft.

[0031] Furthermore, the housing includes a first cavity for accommodating the motor and a second cavity for accommodating the cutter head sliding mechanism and the transmission assembly. The cutter head includes a movable cutter head and a fixed cutter head, and the movable cutter head is connected to the sliding member.

[0032] By adopting the above technical solution, the design of the first cavity and the second cavity facilitates the separate arrangement of the motor, the cutter head sliding mechanism and the transmission assembly, thereby improving the separate arrangement of the motor, the cutter head sliding mechanism and the transmission assembly, avoiding the heat generated by the relatively high heat-generating motor during operation from being transferred to the second cavity. While reducing heat transfer, the multiple cavities also block and reduce the noise generated by the motor from being transmitted to the outside of the hair clipper, thereby improving the user experience.

[0033] Furthermore, a dust cover is provided on the shell, and the hair clipper is also provided with a heat dissipation structure, which is used to improve the heat dissipation efficiency of the shell.

[0034] By adopting the above technical solution, the setting of the heat dissipation structure helps to improve the heat dissipation efficiency of the hair clipper during operation, avoid high temperature inside the hair clipper, and affect the service life of the electrical components inside the hair clipper.

[0035] Compared with the prior art, the advantages of the present invention are:

[0036] 1. The present invention adopts a design of at least two slide rails and a sliding member, which has the following advantages: the setting of at least two guide rails can significantly improve the stability of the movable cutter head when the sliding member drives the movable cutter head to move, reduce shaking and sliding deviation, and thus reduce the vibration and noise generated when the hair clipper is used.

[0037] 2. By guiding and limiting the sliding parts through multiple guide rails, the load can be dispersed, so that the force of the reciprocating drive mechanism when driving the movable cutter head to slide back and forth through the sliding parts is more evenly distributed among the various components, rather than acting on a single point of action on the movable cutter head or the sliding part, effectively reducing the movement wear between the guide rails and the sliding parts. Since the wear is more evenly distributed, the cost and frequency of replacing the guide rails or sliding parts will be reduced, thereby effectively extending the product life, reducing product maintenance requirements, and making the product more stable and durable.

[0038] 3. By guiding the sliding part to move the cutter head through two or more guide rails, more precise linear movement of the sliding part can be achieved, which helps to avoid excessive shearing or uneven cutting of hair when the movable cutter head is shaving due to abnormal swinging of the sliding part. At the same time, it also ensures the stability and cutting precision of the movable cutter head during operation, improves the safety of use, reduces irritation and discomfort to the skin during shaving, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the sliding assembly and reciprocating drive mechanism of the utility model.

[0040] Figure 2 It is a schematic diagram of the overall structure of the cutter head sliding mechanism and the reciprocating drive mechanism of the utility model.

[0041] Figure 3 For this utility model Figure 2 Structural cross-section.

[0042] Figure 4 This is a schematic diagram of the rotor structure of the utility model.

[0043] Figure 5 This is a schematic diagram of the transmission assembly and motor structure of the utility model.

[0044] Figure 6 This is a structural diagram of a hair clipper of the present utility model.

[0045] Figure 7 This is a structural diagram of a hair clipper of the present utility model.

[0046] Figure 8 This is an exploded view of the motor of this utility model.

[0047] Figure 9 This is a schematic diagram of the rotor shell structure of the utility model.

[0048] In the picture:

[0049] 100 transmission assembly, 110 eccentric wheel, 111 eccentric shaft, 120 connecting seat, 1201 first connecting hole, 1202 second connecting hole, 121 second connecting shaft, 130 elastic tensioning member;

[0050] 200 motor, 210 coil, 220 magnet, 230 rotor housing, 231 fan blade, 232 through hole, 233 centrifugal fan blade, 240 motor output shaft, 250 first bearing, 260 bracket, 2601 mounting groove, 261 spacer rod, 262 bottom ring;

[0051] 300 sliding member, 310 main body, 311 connecting arm, 320 first connecting shaft, 330 guide rail, 340 spherical bushing, 350 elastic preload member, 351 contact portion, 352 elastic portion;

[0052] 410 first housing, 411 heat dissipation holes, 412 heat dissipation fins, 420 second housing, 421 sliding holes, 422 partitions, 423 stator barrel, 430 mounting frame;

[0053] 500 dust cover;

[0054] 600 housing, 610 cutter head, 611 fixed cutter head, 612 movable cutter head, 6121 connecting piece, 6121a shaft hole. DETAILED DESCRIPTION

[0055] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0056] Reference Figure 1 、 2 3. The existing hair clipper mainly consists of a housing 600, a shell, a cutter head 610, a sliding assembly and a reciprocating drive mechanism. After the sliding assembly and the reciprocating drive mechanism are assembled inside the shell, the entire shell is mounted on the shell 600. The cutter head 610 includes a movable cutter head 612 and a fixed cutter head 611. The fixed cutter head 611 is fixedly connected to the shell 600. The movable cutter head 612 is set on one side of the cutter head 611. The reciprocating drive mechanism drives the movable cutter head 612 to reciprocate through the sliding assembly to trim the hair.

[0057] In this embodiment, the sliding assembly includes a sliding member 300 and at least two guide rails 330 arranged in parallel and connected to the sliding member 300 to limit the sliding direction of the sliding member 300. The guide rails 330 are mounted on the housing. The movable cutter head 612 is connected to the sliding member 300 to drive the movable cutter head 612 to reciprocate when the sliding member 300 reciprocates along the axial direction of the guide rails 330. The provision of at least two guide rails 330 has the following effects compared to the prior art and the solution of a single guide rail 330:

[0058] First, the provision of at least two guide rails 330 can significantly improve the stability of the movable cutter head 612 when the sliding member 300 drives the movable cutter head 612 to move, reduce shaking and sliding deviation, and thus reduce vibration and noise during use of the hair clipper.

[0059] Second, the sliding member 300 is guided and limited by multiple guide rails 330, which can disperse the load, so that the force of the reciprocating drive mechanism when driving the movable cutter head 612 to slide back and forth through the sliding member 300 is more evenly distributed among the various components, rather than acting on a single point of action on the movable cutter head 612 or the sliding member 300, effectively reducing the movement wear between the guide rails 330 and the sliding member 300. Since the wear is more evenly distributed, the cost and frequency of replacing the guide rails 330 or the sliding member 300 will be reduced, thereby effectively extending the product service life, reducing product maintenance requirements, and improving product stability and durability.

[0060] 3. By guiding the sliding member 300 to move the movable cutter head 612 through two or more guide rails 330, more precise linear movement of the sliding member 300 can be achieved, which helps to avoid excessive shearing or uneven cutting of hair by the movable cutter head 612 when shaving due to abnormal swinging of the sliding member 300. At the same time, it also ensures the stability and cutting precision of the movable cutter head 612 during operation, improves the safety of use, reduces irritation and discomfort to the skin during shaving, and improves the user experience.

[0061] In this embodiment, the parallel arrangement of the guide rails 330 facilitates the connection between a single sliding member 300 and multiple guide rails 330 . At the same time, maintaining parallelism or near parallelism after parallel arrangement also facilitates guiding the sliding member 300 to slide in the axial direction of the guide rail 330 .

[0062] In this embodiment, refer to Figure 1 The sliding member 300 includes a main body 310 and a connecting arm 311 provided on the main body 310 for connecting to the guide rail 330. The number of the connecting arms 311 corresponds to the number of the guide rails 330, so as to facilitate the connection of the sliding member 300 to multiple guide rails 330. The main body 310 is used to connect the movable cutter head 612, and the reciprocating drive mechanism drives the movable cutter head 612 to cut hair after the reciprocating motion.

[0063] In this embodiment, the connecting arm 311 can be integrally formed with the main body 310, or the two can be detachably connected, such as by screwing, snapping, bonding or other detachable connection methods, which will not be described in detail here.

[0064] In this embodiment, multiple guide rails 330 may be provided, which may be two, three, or more. However, due to the volume limitation of the hair clipper product, two guide rails 330 are preferably used in this embodiment. The following example also takes two guide rails 330 and two corresponding connecting arms 311 as an example to illustrate the following embodiment.

[0065] Reference Figure 1 As a first embodiment of the axial reciprocating movement of the sliding member 300 along the guide rail 330, (refer to Figure 1 and 3 ), its connecting arm 311 can be fixedly connected to the guide rail 330, and the guide rail 330 slides on the shell, thereby also realizing the axial reciprocating movement of the sliding member 300 along the guide rail 330. Specifically, a sliding hole 421 can be opened on the shell, and the guide rail 330 is movably set in the sliding hole 421. This method has the following effects.

[0066] 1. Since the connecting arm 311 is fixedly connected to the guide rail 330, the structure of the two is simpler, the number of product parts is reduced, and the product structure is optimized;

[0067] Second, the guide rail 330 is rigidly connected to the connecting arm 311. When the main body 310 of the sliding member 300 is driven by the reciprocating drive mechanism to move back and forth, the structural strength between the connecting arm 311 and the guide rail 330 is greater, and maintenance is relatively convenient. At the same time, the force points of sliding wear are transferred from the traditional direct wear between the connecting arm 311 and the guide rail 330 to the force wear between the guide rail 330 and the shell. This not only evenly distributes the force points, making the sliding member 300 more evenly stressed during the reciprocating movement, but also correspondingly disperses the force wear points, so that the wear of the product during long-term use is relatively reduced, effectively improving the durability, stability and reliability of the product, and is particularly suitable for products that do not require frequent adjustment, such as hair clippers.

[0068] As a second embodiment of the sliding member 300 moving back and forth along the axial direction of the guide rail 330: its connecting arm 311 can be slidably connected to the guide rail 330, that is, a through hole 232 is opened at the lower end of the connecting arm 311, and both ends of the guide rail 330 are fixed on the shell, and the corresponding guide rail 330 is movably arranged in the through hole 232. When the reciprocating drive mechanism drives the sliding member 300 to move, its connecting arm 311 slides back and forth in the axial direction of the guide rail 330.

[0069] Based on the above embodiment, preferably, the two guide rails 330 are arranged in parallel. The parallel arrangement is to ensure that the slider 300 can slide smoothly and stably along the axial direction of the guide rail 330. Of course, due to the relatively small size of the actual hair clipper, the sliding stroke of the slider 300 on the guide rail 330 is limited. It can be imagined that the two guide rails 330 can also be arranged nearly in parallel, that is, there may be a small angular deviation between the two guide rails 330, and the sliding of the slider 300 can also be achieved. Preferably, the angle between the two guide rails 330 is between 0° and 2° to ensure the normal reciprocating motion of the slider 300.

[0070] In the second embodiment based on the axial reciprocating movement of the sliding member 300 along the guide rail 330, there can be sliding friction or rolling friction between the guide rail 330 and the connecting arm 311. The sliding friction two can be connected by a sliding sleeve, and the rolling friction two can be provided with a ball bearing between them to reduce the contact friction when the two move relative to each other.

[0071] Regarding the first embodiment in which the sliding member 300 reciprocates along the axial direction of the guide rail 330 , the guide rail 330 and the sliding hole 421 of the housing may also adopt sliding friction or rolling friction to achieve corresponding effects.

[0072] For the sake of clarity, in the following embodiments, the various embodiments are described based on the structure of the first embodiment in which the sliding member 300 reciprocates along the axial direction of the guide rail 330 .

[0073] In order to avoid the two guide rails 330 from getting stuck when sliding in the sliding hole 421, and to ensure that the sliding part 300 can slide stably, the two connecting arms 311 on the main body 310 and the two guide rails 330 are kept in a tensioned state to reduce the vibration and noise of the sliding part 300 during movement. In this embodiment, one of the two connecting arms 311 is rigidly connected to the guide rail 330, and the other is elastically connected to the guide rail 330. In this way, the elastic deformation of the elastic connecting arm 311 is used to compensate for the non-parallel dimensional deviation of the two slide rails, which can avoid the system from getting stuck, and can keep the sliding block and the sliding rod in a tensioned state at all times, which has the effect of shock absorption and noise reduction, and the product is quieter and more stable when running.

[0074] Based on the above embodiment, in order to reduce the influence of error factors such as assembly reasons, surface roughness or bending deformation of the guide rail 330 on the guiding accuracy of the guide rail 330, so as to improve the stability and reliability of the sliding member 300 when driving the movable cutter head 612 to move back and forth, a spherical bushing 340 is arranged between the guide rail 330 and the sliding hole 421.

[0075] In this embodiment, as a first embodiment of the spherical sleeve 340 (not provided with drawings), the spherical sleeve 340 includes an outer ring and an inner ring. The outer ring is generally an annular component with a spherical groove, which is used to connect with the sliding hole 421. The spherical groove of the outer ring matches the spherical protrusion of the inner ring to form spherical contact. The inner ring can freely rotate around its axis within the outer ring by a certain angle. A through hole 232 is provided at the center of the inner ring. The guide rail 330 is movably arranged in the through hole 232. In this way, the guide rail 330 rotates relatively inside the outer ring through the inner ring, so that the guide rail 330 can freely deflect within a certain angle range to adapt to possible slight misalignment or angular deviation problems, compensate for installation errors or slight bending of the shaft to a certain extent, thereby achieving the concentricity of the two guide rails 330 and the sliding sleeves at both ends, which helps to improve the smoothness and stability of the displacement of the sliding member 300 on the sliding sleeve through the guide rail 330.

[0076] Furthermore, spherical balls may be provided on the contact surfaces of the inner ring and the outer ring, thereby utilizing the spherical balls to reduce the contact friction between the inner ring and the outer ring during rotation.

[0077] As a second embodiment of the spherical sleeve 340, refer to Figure 1The spherical sleeve 340 can be a spherical sleeve. The overall shape of the spherical sleeve can be spherical or other shapes. It is preferably a barrel shape with a larger diameter in the middle and gradually decreasing diameters towards both ends. The spherical sleeve is penetrated by a through hole 232 that cooperates with the guide rail 330. The guide rail 330 is passed through the spherical sleeve through the through hole 232. The inner wall shape of the sliding hole 421 is an annular concave surface as a whole, and is adapted to the surface of the spherical sleeve. A spherical fit is formed between the spherical sleeve and the sliding hole 421. In this way, the spherical sleeve can also be used to rotate relative to each other in the concave surface, thereby achieving the above-mentioned effect.

[0078] In this embodiment, the provision of the spherical sleeve 340 also has the following advantages:

[0079] First, the movable contact between the guide rail 330 and the sliding hole 421 is transformed into the movable contact between the guide rail 330 and the spherical shaft sleeve 340. The load and friction on the single guide rail 330 are shared by the two spherical shaft sleeves 340, effectively reducing the wear of the sliding shaft sleeve and reducing frictional heat;

[0080] Second, the spherical bushings 340 are distributed at both ends of the housing, which can increase the number of guide points and help average out the error factors of the guide rail 330, such as surface roughness and bending deformation. This can improve the guidance accuracy and make the structure more stable during movement.

[0081] 3. It helps to enhance the overall rigidity of the structure: When the guide rail 330 is subjected to external loads, the supporting effect of the spherical bushings 340 at both ends can effectively resist deformation, maintain the shape and dimensional stability of the structure, better constrain the movement of the guide rail 330, reduce the possibility of vibration and offset, and thus make the movable cutter head 612 more stable when sliding.

[0082] In this embodiment, when the spherical bushing 340 is provided, the above-mentioned sliding bushing may not be provided, and only the spherical bushing 340 may be provided.

[0083] Based on the above embodiment, refer to Figure 1 、 2The spherical sleeve 340 is fixed to the sliding hole 421 and the spherical sleeve 340 is fixed to the sliding hole 421. ...

[0084] Specifically, refer to Figure 1 As an embodiment of the elastic preload member 350, this embodiment uses the second embodiment of the spherical sleeve 340, that is, the spherical sleeve 340 as a spherical sleeve, to illustrate the solution of the elastic preload member 350:

[0085] The elastic preload member 350 includes a contact portion 351 connected to the inner wall of the sliding hole 421 and an elastic portion 352 arranged in an annular manner on the contact portion 351. The elastic portion 352 is elastically pressed against the surface of the spherical sleeve. When the spherical sleeve is subjected to the force of the guide rail 330, it can drive the spherical sleeve to squeeze the elastic portion 352 and bend, thereby allowing the spherical sleeve to rotate relatively, so that the guide rail 330 can deflect freely within a certain angle to adapt to possible slight misalignment or angular deviation problems.

[0086] Specifically, the elastic preload member 350 can be made of metal material, the contact portion 351 can be designed as a ring to fit with the inner wall of the sliding hole 421, and the elastic portion 352 is a metal sheet with multiple spacer rings arranged on one side of the contact portion 351. The free end of the metal sheet is bent along the surface of the spherical sleeve so that the multiple metal sheets can be stably fitted on the spherical sleeve to realize the elastic positioning function of the spherical sleeve.

[0087] Of course, the elastic preload member 350 may also be a plurality of springs, compression springs, elastic rubbers or elastic levers arranged in a ring on the inner wall of the sliding hole 421. As long as it can provide positioning and elastic preload for the spherical sleeve 340 and allow the spherical sleeve 340 to have a certain degree of free rotation, the elastic preload member 350 may also be other components or structures, which will not be described one by one here.

[0088] Based on the above embodiment, the reciprocating drive mechanism serves as the power part for driving the sliding member 300 to move back and forth. Its reciprocating drive mechanism can use an existing magnetic swing motor to drive the above-mentioned sliding member 300 to slide back and forth. The specific magnetic swing motor driving method is: a magnet is set on the sliding member 300, and a coil is provided at the lower end of the magnet. The coil is used to repeatedly pass current in different directions, thereby generating a reciprocating magnetic field to push the magnet to drive the sliding member 300 to swing back and forth. Preferably, the reciprocating drive mechanism in this embodiment includes a motor 200 and a transmission assembly 100. The transmission assembly 100 is connected to the sliding member 300. The motor 200 is used to drive the transmission assembly 100 to move, thereby converting the rotational motion of the motor 200 into a reciprocating motion along the axial direction of the guide rail 330.

[0089] The transmission assembly 100 is arranged in the housing, referring to Figure 2 and 5 The eccentric wheel 110 is connected to the output shaft of the motor 200 by the eccentric wheel 110, and the upper end surface of the deflection wheel is provided with an eccentric shaft 111 away from the center position. The connecting seat 120 is provided with a first connecting hole 1201 and a second connecting hole 1202. The first connecting hole 1201 is plugged into the deflection shaft, and the two can rotate relative to each other. The second connecting hole 1202 is plugged into the lower end of the second connecting shaft 121. The upper end of the second connecting shaft 121 is connected to the main body 310 of the sliding member 300. When the motor 200 is running, the connecting seat 120 is driven to move by the eccentric wheel 110, and the connecting seat 120 drives the sliding member 300 to reciprocate along the axial direction of the guide rail 330 through the second connecting shaft 121. The upper end of the main body 310 is provided with a first connecting shaft 320, which is connected to the movable cutter head 612, thereby driving the movable cutter head 612 to reciprocate to realize the hair trimming function.

[0090] In this embodiment, the first connecting shaft 320 and the main body 310 are detachable or can be integrally formed. The detachable connection makes it easy to replace the corresponding parts when either one is damaged, thereby reducing the maintenance cost of the product when it is damaged.

[0091] In this embodiment, the second connecting shaft 121 can be rotatably connected to either the connecting base 120 or the main body 310 . Of course, both ends of the second connecting shaft 121 can also be rotatably connected to the connecting base 120 and the main body 310 respectively.

[0092] In this embodiment, in order to improve the lubrication smoothness of the rotation between the second connecting shaft 121, the connecting seat 120 and the main body 310, a ball bearing can be added at the connection position between the second connecting shaft 121, the connecting seat 120 and the main body 310, and then the ball bearing can be used to reduce the friction resistance when the corresponding components rotate.

[0093] In this embodiment, the first connecting shaft 320 can be connected to the movable cutter head 612 in a detachable or non-detachable manner such as screw connection, plug-in connection, clamping connection and bonding, and the two can also be formed as one piece. In this embodiment, a detachable manner is preferably adopted, and an axial hole 6121a can be opened on the movable cutter head 612, and the upper end of the first connecting shaft 320 can be inserted into the axial hole 6121a, thereby conveniently completing the rapid assembly between the movable cutter head 612 and the first connecting shaft 320, and the disassembly, assembly and maintenance of the two are more convenient and quick.

[0094] Further, refer to Figure 7 and 8 A connecting piece 6121 can be added between the movable cutter head 612 and the first connecting shaft 320. The connecting piece 6121 is connected to the cutter head 610 by screwing, welding or other detachable or non-detachable means, and the shaft hole 6121a is provided on the connecting piece 6121. In this way, the force point of the first connecting shaft 320 and the movable cutter head 612 can be transferred to the connecting piece 6121, thereby avoiding the first connecting shaft 320 directly driving the cutter head 612 to move, resulting in concentrated force and easy damage to the cutter head 610. At the same time, it also avoids the problem of opening the shaft hole 6121a on the relatively thin movable cutter head 612 to affect its structural strength.

[0095] Preferably, the first connecting shaft 320 and the shaft hole 6121a can adopt interference fit, clearance or overfit, as long as the structural tightness of the two can be guaranteed. Of course, the movable cutter head 612 and the first connecting shaft 320 can also be connected through other components, which will not be elaborated here.

[0096] In this embodiment, the shape of the first connecting shaft 320 can be cylindrical, prism or other shapes, and the shape of the corresponding shaft hole 6121a can be adapted to the shape of the first connecting shaft 320.

[0097] Further, refer to Figure 3 In order to reduce the vibration and noise during product operation and improve transmission accuracy, an elastic tensioning member 130 is additionally provided between the connecting seat 120 and the main body 310 of the sliding member 300. The elastic tensioning member 130 applies opposite pulling forces or opposite elastic supporting forces to the connecting seat 120 and the sliding member 300, thereby maintaining a tensioned state between the connecting seat 120 and the sliding member 300 at all times, thereby reducing the active gap between the sliding member 300 and the connecting seat 120 during relative movement, reducing the generation of vibration and noise, and improving transmission accuracy.

[0098] In this embodiment, the elastic tensioning member 130 can be an elastic member such as a spring, a tension spring, a compression spring or elastic rubber, as long as it can maintain the elastic tensioning force between the connecting seat 120 and the sliding member 300 to reduce the gap between the components. It may also be other elastic parts 352 or components, which will not be described in detail here.

[0099] In this embodiment, taking the spring as an example, in order to optimize the product structure, the spring can be sleeved on the outside of the first connecting shaft 320, with the upper end of the spring connected to the main body 310 and the lower end connected to the connecting seat 120. The advantage of this arrangement is that it can optimize the product space and reduce the elastic tensioning member 130 from occupying too much space inside the hair clipper. Of course, the elastic member can also be arranged at other positions between the connecting seat 120 and the main body 310, which will not be elaborated here.

[0100] Based on the above embodiment, the elastic tensioning member 130 can also be arranged between the eccentric wheel 110 and the connecting seat 120, and can also play the role of tensioning the connecting seat 120 and the eccentric wheel 110, thereby achieving the above-mentioned noise reduction and vibration reduction effect.

[0101] Based on the above embodiment, refer to Figure 2 and 3 The shell includes a first cavity for accommodating the motor 200 and a second cavity for accommodating the transmission assembly 100 and the cutter head sliding mechanism. For the convenience of description, the shell with the first cavity is called the first shell 410, and the shell corresponding to the second cavity is called the second shell 420. The first shell 410 and the second shell 420 can be integrally formed or can be detachably combined. In this embodiment, the first shell 410 and the second shell 420 are integrally formed, and a partition is provided between the two to divide the entire shell into a first cavity and a second cavity. At the same time, the provision of the partition can also enhance the structural strength of the entire shell. The first cavity is provided with the motor 200, and the second cavity is provided with the transmission assembly 100 and the cutter head sliding mechanism. By dividing different cavities, it helps to improve the sealing degree of various parts of the entire product. At the same time, the provision of the first cavity and the second cavity also prevents the heat generated by the relatively large motor 200 from being transferred to the second cavity during operation. While reducing heat transfer, the noise generated by the motor 200 is blocked and reduced from being transmitted to the outside of the hair clipper through multiple cavities, thereby improving the user experience.

[0102] In this embodiment, a dust cover 500 is provided on the second shell 420. The dust cover 500 is a flexible bellows so that when the first connecting shaft 320 reciprocates, the dust cover 500 can be elastically deformed to adapt to the reciprocating swing of the first connecting shaft 320.

[0103] Based on the above embodiment, refer to Figure 8The motor 200 includes a rotor housing 230, a coil 210, a magnet 220, a bracket 260, a motor output shaft 240 and a first bearing 250. The rotor housing 230 and the bracket 260 are preferably in a cylindrical structure. The bracket 260 is provided with a plurality of mounting grooves 2601 in a spacer ring. The center of the bottom plate extends downward to form a stator barrel 423. The interior of the stator barrel 423 is hollow to facilitate the arrangement of the motor output shaft 240. The coil 210 is wrapped around the stator barrel 423. There are at least two magnets 220, and the magnets 220 are correspondingly installed in the corresponding mounting holes. The magnets 220 are installed in the groove 2601. After the multiple magnets 220 are installed on the bracket 260, they are fixedly connected to the rotor shell 230 through the bracket 260. The coil 210 is located inside the several ring-shaped magnets 220. The motor output shaft 240 is rotatably connected to the hollow inner wall of the stator cylinder 423 through the first bearing 250, and its lower end is fixed to the bottom center position of the rotor shell 230. After the motor 200 is energized, the magnets 220 drive the bracket 260 and the rotor shell 230 to rotate in the first shell 410, thereby driving the motor output shaft 240 to rotate.

[0104] In this embodiment, the magnet 220 can be fixed in the mounting groove 2601 by gluing, snapping or other methods.

[0105] In this embodiment, the magnet 220 can also be a whole ring magnet directly arranged on the rotor shell 230. In this embodiment, multiple magnets 220 are arranged in a ring inside the rotor shell 230. The design utilizes multiple magnets 220. Compared with an integral ring magnet, the magnetic field generated by the multiple magnets 220 has a stronger magnetic field strength than the integrated ring magnet, and the driving force on the motor output shaft 240 is also relatively large. Therefore, it is better than the solution of a whole ring magnet. At the same time, the installation groove 2601 is added, which also makes it more convenient to position and install the magnet 220. At the same time, when some magnets 220 are damaged, the corresponding magnets 220 can also be disassembled and replaced, thereby reducing subsequent maintenance costs.

[0106] Based on the above embodiment, the bracket 260 includes a bottom ring 262 and a spacer ring, and a plurality of partition rods 261 are arranged on the bottom ring. Mounting grooves 2601 are formed between adjacent partition rods 261. The advantage of this design is that the adjacent magnets 220 can be divided by the partition rods 261, and the side edges of the magnets 260 can be supported at the same time, so as to support and protect the side edges of the magnets 220 when the rotor shell 230 rotates along its circumferential direction.

[0107] Based on the above embodiment, a hair clipper is provided, which includes a housing 600. The entire housing is installed inside the housing 600. Specifically, the housing can be installed in the housing 600 through a mounting bracket 430. The housing is cylindrical in shape, and its lower end is used for a user to hold. A power supply, a circuit board, a motor 200 and other components are provided inside the housing. Other components commonly used in hair clippers, such as switches, power display screens or touch screens and other existing structures, are not described one by one here. Only the main technical features related to the embodiment are parameterized. The fixed blade head 611 is generally fixedly installed at the upper end of the housing 600.

[0108] In this embodiment, refer to Figure 2 In order to further improve the heat dissipation of the entire product during operation, a heat dissipation structure is provided on the first shell 410 and / or the second shell 420. The heat dissipation structure can improve the heat dissipation of the entire shell, thereby reducing the heat generation of the product and protecting the electrical components inside the shell, thereby preventing the internal electrical components from working in a high-temperature environment for a long time and affecting their service life.

[0109] Specifically, as an embodiment of the heat dissipation structure, the heat dissipation structure may be heat dissipation fins 412 on the housing. The heat dissipation fins 412 are used to increase the heat dissipation area, thereby improving the heat dissipation efficiency of the housing.

[0110] As another embodiment of the heat dissipation structure, the heat dissipation structure may also be a micro fan provided on the surface of the housing, so as to utilize the micro fan to improve the heat dissipation efficiency of the housing.

[0111] As another embodiment of the heat dissipation structure, refer to Figure 2 and 4 The heat dissipation structure can also be heat dissipation holes 411 opened on the surface of the shell, which utilize the heat dissipation holes 411 to dissipate the heat of the shell to the outside of the shell, avoiding heat accumulation in the shell and the problem of excessive temperature rise.

[0112] In the above embodiment, the heat dissipation mechanism is directly provided on the shell. Since the first shell 410 is provided with the motor 200, which generates relatively large heat and is also the main heat source of the entire hair clipper, in order to improve the heat dissipation efficiency of the first shell 410, a guide structure is provided on the rotor shell 230. When the rotor shell 230 rotates at high speed, its own guide structure is utilized to connect the interior of the rotor shell 230 with the external airflow, thereby achieving the effect of rapid cooling.

[0113] Specifically, as a first embodiment of the guide structure, it can be a through hole 232 provided on the rotor shell 230, and the through hole 232 can be opened at the bottom and / or side of the rotor shell 230. When it is provided at the bottom, a plurality of through holes 232 are arranged on the rotor shell 230 around the motor output shaft 240 as the center point.

[0114] In this embodiment, the through holes 232 may be a plurality of single holes arranged at intervals, or may be continuous holes arranged in a ring shape, which will not be described in detail here.

[0115] Furthermore, as a second embodiment of the guide structure, when the through hole 232 is provided at the bottom of the rotor shell 230, the side of the through hole 232 is raised to form a fan blade 231. In this way, when the rotor shell 230 rotates, the airflow generated by the fan blade 231 is used to quickly conduct the heat inside the rotor shell 230 to the outside of the motor 200, thereby effectively improving the heat dissipation efficiency of the motor 200 and enhancing the heat dissipation effect.

[0116] In this embodiment, the blades 231 can extend toward the interior of the rotor housing 230 or toward the exterior of the rotor housing 230. When the blades 231 rotate, the airflow can be directed from the interior of the rotor housing 230 to the exterior, or it can be directed to convey relatively cool air outside the rotor housing 230 into the interior of the rotor housing 230. Both methods can achieve the purpose of cooling. In this embodiment, it is preferred to convey airflow from the interior of the rotor housing 230 to the exterior, as this provides a more effective heat dissipation effect.

[0117] As a third embodiment of the guide structure, refer to Figure 9 Its flow-guiding structure is similar to that of the second embodiment, wherein the through-hole 232 spacer ring is provided on the circumference of the rotor shell 230, and the flow-guiding structure is a centrifugal blade 233 provided in the through-hole 232. When the rotor shell 230 rotates, the centrifugal blade forms an airflow along its axial direction inside the rotor shell 230, thereby accelerating the flow guidance and cooling inside the rotor shell 230, thereby achieving the effect of cooling the motor.

[0118] Based on the above embodiments, the second embodiment and the third embodiment of the above-mentioned guide structure can be used simultaneously, that is, while the fan blades 231 are set at the bottom of the rotor shell 230, the centrifugal fan blades 233 are set on the side of the rotor shell 230. In this way, when the rotor shell 230 is rotating, the fan blades 231 and the centrifugal fan blades 233 operate synchronously, effectively accelerating the air flow inside the rotor shell 230, thereby greatly enhancing the cooling effect of the motor.

[0119] Based on the second embodiment of the above-mentioned guide structure, the fan blade 231 is provided separately, that is, a through hole 232 is opened on the rotor shell 230, which is only used to connect the internal and external airflows of the rotor shell 230, and the fan blade 231 can be a fan blade separately provided at the bottom of the rotor shell 230, which can also achieve the above-mentioned purpose of guiding the airflow for heat dissipation.

[0120] It is conceivable that when the fan blades 231 are provided separately, the fan blades 231 can also be integrated with the motor output shaft 240, which can also achieve the effect of guiding the flow and cooling the motor.

[0121] Based on the above embodiment, the above-mentioned motor 200 can be directly installed inside the casing 600, and it can adopt the existing commonly used screw fastening method. In order to improve the convenience of installing the motor 200 on the casing 600 and improve the protection of the motor 200, a mounting bracket 430 can be added to the motor 200 and the casing 600 bracket 260. The motor 200 can be first fixed on the mounting bracket 430, and then the mounting bracket 430 can be installed in the casing 600 by screws.

[0122] Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tool head sliding mechanism, comprising a sliding assembly connected to the tool head and a housing for arranging the sliding assembly, characterized in that: The sliding assembly includes a sliding member and at least two guide rails arranged in parallel and connected to the sliding member to limit the moving direction of the sliding member. The guide rails are installed on the housing. The cutter head is connected to the sliding member to drive the cutter head to reciprocate when the sliding member moves back and forth along the axial direction of the guide rails.

2. A tool head sliding mechanism according to claim 1, characterized in that: The sliding member includes a main body and a connecting arm provided on the main body for connecting to a plurality of the guide rails; The connecting arm is fixedly connected to the guide rail, and a sliding hole is provided on the housing, and the guide rail is slidably arranged in the sliding hole; Or the connecting arm is slidably connected to the guide rail, and the guide rail is fixed on the shell.

3. A tool head sliding mechanism according to claim 2, characterized in that: The sliding hole and the guide rail sleeve are provided with a spherical shaft sleeve.

4. A tool head sliding mechanism according to claim 3, characterized in that: An elastic pre-tightening member is provided between the outer periphery of the spherical sleeve and the inner wall of the sliding hole, so as to tighten the spherical sleeve and the shaft hole while allowing the spherical sleeve to rotate.

5. The tool head sliding mechanism according to claim 4, characterized in that: The elastic pre-tightening member includes a contact portion connected to the inner wall of the sliding hole and an elastic portion arranged around the contact portion, and the elastic portion is elastically pressed against the spherical sleeve.

6. The tool head sliding mechanism according to claim 2, characterized in that: Among the plurality of connecting arms, any one is rigidly connected to the guide rail, and the remaining connecting arms are elastically connected to the guide rail.

7. The tool head sliding mechanism according to claim 6, characterized in that: Two guide rails are provided and are arranged in parallel. One of the connecting arms is connected to the guide rail with a rigid material, and the other is elastically connected to the guide rail.

8. The tool head sliding mechanism according to claim 2, characterized in that: The main body is provided with a first connecting shaft, and the first connecting shaft is connected to the cutter head.

9. The tool head sliding mechanism according to claim 8, characterized in that: The cutter head is provided with an axial hole that matches the first connecting shaft, and the two form an axial hole match.

10. A reciprocating drive mechanism, characterized in that: It comprises the cutter head sliding mechanism according to any one of claims 1 to 9, wherein the reciprocating drive mechanism comprises a motor and a transmission assembly, and the transmission assembly is used to convert the rotational motion of the assembly into the reciprocating linear motion of the sliding member.

11. The reciprocating drive mechanism according to claim 10, characterized in that: The transmission assembly includes an eccentric wheel, a connecting seat and a second connecting shaft. The eccentric wheel is driven by the motor and is rotatably connected to the connecting seat. One end of the second connecting shaft is connected to the sliding member, and the other end is connected to the end of the connecting seat away from the eccentric wheel.

12. The reciprocating drive mechanism according to claim 11, characterized in that: The connecting seat and / or the sliding member are rotatably connected to the second connecting shaft, and an elastic tensioning member is provided between the connecting seat and the sliding member for elastic tensioning after the two are connected via the second connecting shaft.

13. The reciprocating drive mechanism according to claim 12, characterized in that: The connecting seat is provided with a first connecting hole and a second connecting hole, the second connecting hole is plugged into the second connecting shaft, and the first connecting hole is rotatably connected to the eccentric wheel.

14. A hair clipper, characterized in that: It includes a reciprocating drive mechanism as described in claim 10, the shell includes a first cavity for accommodating the motor and a second cavity for accommodating the cutter head sliding mechanism and the transmission assembly, the cutter head includes a movable cutter head and a fixed cutter head, and the movable cutter head is connected to the sliding member.

15. A hair clipper according to claim 14, characterized in that: The shell is provided with a dust cover, and the hair clipper is also provided with a heat dissipation structure, which is used to improve the heat dissipation efficiency of the shell.

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