Key mounting structure and hair cutting device

Abstract

The embodiment of the utility model provides a key installation structure and a hair cutting device. The key installation structure comprises a shell, a fixing base installed in the shell, a key and a machine core support. The machine core support is connected to the shell. One end of the fixed seat in the first direction is connected to the shell, and the other end of the fixed seat in the first direction is clamped between the shell and the machine core bracket; a mounting hole is formed in the outer side wall of the shell, and the key is mounted in the mounting hole; the key is elastically mounted on the fixed seat and can move back and forth between the shell and the fixed seat along a preset direction; the first direction intersects with the preset direction. One end of the fixed seat is clamped between the shell and the machine core bracket, so that the machine core bracket provides stable and continuous supporting force for the fixed seat, the performance of the fixed seat for bearing the press springback of the key is enhanced, and the reliability and the stability of the fixed seat are improved. And meanwhile, the other end of the fixed seat is fixed on the shell, so that stable connection between the fixed seat and the shell can be ensured, and the situation of loosening or falling off in the use process is prevented.

Description

Technical Field

[0001] The present application relates to the field of personal care, and particularly to a key installation structure and a hair cutting device. Background Art

[0002] The key is an important component for controlling the switch and mode switching. During the use of electronic products, the key is frequently pressed, so the durability of the key assembly is particularly important. In the related art, the key is generally installed on the housing through a connection structure, such as clamping the key to the connection structure and fixing the connection structure on the housing. During use, the connection structure needs to frequently withstand the compression and rebound of the elastic member. However, there are no other components to support the side of the connection structure away from the key. The resulting fatigue cumulative effect reduces the life of the connection structure, and then the key cannot be used for a long time.

[0003] The above content is only used to assist in understanding the technical solution of the utility model, and does not represent an admission that the above content is the prior art. Summary of the Utility Model

[0004] In view of the above problems, the present utility model provides a key installation structure, aiming to solve the technical problem that the connection structure lacks effective support and its durability performance decreases in the key installation structure.

[0005] To achieve the above object, the key installation structure provided by the present utility model includes a housing, a fixed seat installed in the housing, a key, and a movement support; the movement support is connected to the housing;

[0006] One end of the fixed seat in the first direction is connected to the housing, and the other end of the fixed seat in the first direction is clamped between the housing and the movement support;

[0007] An installation hole is formed on the outer side wall of the housing, and the key is installed at the installation hole; the key is elastically installed on the fixed seat and can reciprocate along a preset direction between the housing and the fixed seat;

[0008] The first direction intersects with the preset direction.

[0009] In one embodiment, the fixed seat includes a convex portion facing the movement support; the movement support includes a stop projection facing the fixed seat; the convex portion abuts against the stop projection in the preset direction.

[0010] In one embodiment, the housing is provided with an opening in the first direction; the movement support is installed into the housing from the opening;

[0011] One end of the convex portion close to the opening is provided with a first guiding inclined surface for guiding the abutting projection in the first direction;

[0012] And / or, one end of the abutting projection away from the opening is provided with a second guiding inclined surface that is in guiding cooperation with the convex portion along the first direction.

[0013] In one embodiment, the housing is provided with an opening in the first direction; the movement bracket is installed into the housing from the opening; one end of the fixing base close to the opening is in limiting abutment with the movement bracket and the housing in the preset direction; the end of the fixing base away from the opening is fixedly connected to the housing.

[0014] In one embodiment, the fixing base includes a base and a substrate connected to each other; the base extends along the first direction, and one end of the base close to the opening is in limiting abutment with the movement bracket and the housing in the preset direction; the substrate is connected to the end of the base away from the opening and is arranged towards the movement bracket along the preset direction; the substrate is detachably connected to the bottom wall of the housing in the first direction.

[0015] In one embodiment, an installation seat is arranged on the bottom wall of the housing towards the opening, the installation seat is provided with a fixing hole, the substrate is provided with a through hole corresponding to the fixing hole, and the button installation structure further includes a fastener, and the fastener passes through the through hole and is connected to the fixing hole.

[0016] In one embodiment, the button installation structure further includes a circuit board and a seal;

[0017] The button includes a cover body and a rod body connected to the inner side of the cover body; a through activity hole is provided on the fixing base, and the activity hole corresponds to the rod body; the circuit board is arranged on one side of the movement bracket towards the fixing base, and a button switch is arranged on one side of the circuit board towards the fixing base, and the button switch corresponds to the rod body;

[0018] The seal plugs the activity hole, and the seal seals the gap between the fixing base and the housing.

[0019] In one embodiment, the fixing base includes a base and a boss protruding from the base; the base is clamped between the housing and the movement bracket, the boss is arranged in the installation hole, an assembly groove is arranged on the boss towards the button, and the activity hole is arranged on the bottom wall of the assembly groove; the seal includes a sealing sheet and a first sealing ring, the sealing sheet is attached to the bottom wall surface of the assembly groove, and the first sealing ring is clamped between the outer peripheral surface of the boss and the inner wall surface of the installation hole.

[0020] In one embodiment, the seal further includes a second seal ring and a plurality of seal connection parts;

[0021] The second seal ring is connected around the periphery of the seal sheet; the first seal ring surrounds the outer periphery of the second seal ring and is connected to the second seal ring through a plurality of the seal connection parts, and the second seal ring is attached to the side wall surface of the assembly groove.

[0022] In one embodiment, a ring-shaped flange is protruded on the outer peripheral surface of one end of the boss facing the key, and the first seal ring extends towards the key and covers the outer surface of the ring-shaped flange;

[0023] And / or, a plurality of notches are provided on the end face of one end of the boss facing the key, and the seal connection parts are embedded in the notches.

[0024] In one embodiment, the key mounting structure further includes a plurality of elastic members; the fixing seat is provided with a plurality of accommodation grooves surrounding the movable hole and facing the key; one end of the elastic member abuts against the key, and the other end of the elastic member abuts against the bottom wall surface of the accommodation groove.

[0025] In one embodiment, at least one elastic member is provided on each of the two sides of the movable hole in the first direction and on each of the two sides in the second direction; the preset direction, the first direction, and the second direction are perpendicular to each other in pairs.

[0026] In one embodiment, the key includes a cover body and a limiting part; the cover body is inserted into the mounting hole; the limiting part is connected around the outer peripheral surface of the cover body, and the limiting part is in limiting abutment with the inner wall surface of the housing in the preset direction.

[0027] The present utility model also proposes a hair cutting device, including the key mounting structure as described in any one of the above embodiments and a main body part of the hair cutting device, and the main body part of the hair cutting device is connected to the key mounting structure.

[0028] The utility model provides a key installation structure, which includes a housing, a fixed seat installed in the housing, a key, and a movement support. The movement support is connected to the housing. One end of the fixed seat in the first direction is connected to the housing, and the other end of the fixed seat in the first direction is clamped between the housing and the movement support. An installation hole is formed in the outer side wall of the housing, and the key is installed at the installation hole. The key is elastically installed on the fixed seat and can reciprocate along a preset direction between the housing and the fixed seat. The first direction intersects with the preset direction. By clamping one end of the fixed seat between the housing and the movement support, the movement support provides a stable and continuous supporting force for the fixed seat, enhancing the performance of the fixed seat to withstand the pressing and rebounding of the key, thereby improving the reliability and stability of the fixed seat. At the same time, the other end of the fixed seat being fixed to the housing can ensure the firm connection between the fixed seat and the housing, preventing loosening or falling off during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 Shows a schematic structural diagram of an embodiment of the hair cutting device of the present utility model;

[0031] Figure 2 is Figure 1 an exploded view of the hair cutting device in;

[0032] Figure 3 is Figure 2 a schematic structural diagram of the movement and the movement support in;

[0033] Figure 4 is Figure 1 a partial structural diagram of the main body part of the hair cutting device in;

[0034] Figure 5 is Figure 4 a cross-sectional view along the line V-V;

[0035] Figure 6 is Figure 5 a partial enlarged view of part A in;

[0036] Figure 7 is Figure 4 a cross-sectional view along the line VII-VII;

[0037] Figure 8 is Figure 5 a partial enlarged view of part B in;

[0038] Figure 9 is Figure 1 Partial structural schematic diagram of the main body part of the hair cutting device in

[0039] Figure 10 is Figure 9 Cross-sectional view along the X-X line;

[0040] Figure 11 is Figure 10 Local enlarged view at C in

[0041] Figure 12 Structural schematic diagram of the key installation structure (the housing is not shown);

[0042] Figure 13 is Figure 12 Exploded view of the key installation structure in

[0043] Explanation of the reference numerals in the drawings:

[0044]

[0045]

[0046] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0047] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of the technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0048] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0049] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously.

[0050] The present utility model provides a key installation structure 100. Please refer to Figure 2 and Figure 13 , the key installation structure 100 includes a housing 10, a fixed seat 20 installed inside the housing 10, a key 30, and a movement support 40.

[0051] The housing 10 is the external protection structure of the entire device, accommodating all internal components and providing structural support, protecting the internal components from the external environment, and ensuring the stability and long-term use of the device. The housing 10 can have various shapes, including but not limited to rectangular, cylindrical, etc. The housing 10 can be made of plastic, metal, composite materials, etc.

[0052] The fixed seat 20 provides a stable support platform for the key 30, ensuring that the key 30 can be firmly installed on the housing 10. This stability is for preventing the key 30 from loosening or falling off during use. The design of the fixed seat 20 usually matches the shape and size of the key 30 to ensure that the key 30 can be accurately installed in the predetermined position. This precise positioning helps to achieve the precise docking of the key 30 with the circuit board 50 or other control elements, avoiding signal transmission errors or device failures caused by position deviation.

[0053] The key 30 is used to control functions such as starting, stopping, or switching of electronic products such as a hair cutting device 200, an electric toothbrush, etc. The shape of the key 30 can be circular, kidney-shaped, etc., which is not limited herein. The key 30 can be made of plastic, metal, composite materials, etc.

[0054] The movement support 40 is connected to the housing 10. The function of the movement support 40 is to firmly fix the movement part of the electric cutting device, including core components such as a motor, a transmission mechanism, a power supply, etc. This fixation ensures that the movement does not displace or loosen during high-speed operation or when subjected to external forces, thus guaranteeing the stability and reliability of the device. The movement support 40 can be a power support or a motor support, which is not limited herein.

[0055] One end of the fixing base 20 in the first direction is connected to the housing 10, and the other end of the fixing base 20 in the first direction is clamped between the housing 10 and the movement support bracket 40. The button 30 is elastically mounted on the fixing base 20 and can reciprocate between the housing 10 and the fixing base 20 along a preset direction. The first direction intersects the preset direction. The preset direction refers to the pressing direction or the rebounding direction of the button 30. Then the first direction can be the installation direction of the movement support bracket 40 or perpendicular / nearly perpendicular to the installation direction of the movement support bracket 40.

[0056] When the fixing base 20 is only fixedly connected to the housing 10 and there is no other component to support it in the preset direction, it is difficult for the fixing base 20 to withstand multiple pressing and rebounding of the button 30, which may cause the fixing base 20 to shake or shift, thus affecting the accuracy and stability of the entire shearing device. Compared with the situation where the fixing base 20 is only fixedly connected to the housing 10 and there is no other component to support it in the preset direction, in this embodiment, the movement support bracket 40 provides a stable and continuous supporting force for the fixing base 20, thereby improving the reliability and stability of the fixing base 20.

[0057] Fixed connection includes detachable connection and non-detachable connection. Compared with both ends of the fixing base 20 being fixedly connected to the housing 10, one end of the fixing base 20 abuts against the housing 10 and the other end is fixed to the housing 10, which reduces the risk of deformation of the housing due to local stress concentration. Compared with both ends of the fixing base 20 abutting against the housing 10, one end of the fixing base 20 abuts against the housing 10 and the other end is fixed to the housing 10, which can ensure a firm connection between the fixing base 20 and the housing 10 and prevent loosening or falling off during use.

[0058] An installation hole 11 is provided on the outer side wall of the housing 10. The button 30 is installed at the installation hole 11 and is exposed outside the housing 10 at the installation opening.

[0059] The present utility model provides a key mounting structure 100, which includes a housing 10, a fixed seat 20 mounted inside the housing 10, a key 30, and a movement bracket 40; the movement bracket 40 is connected to the housing 10; one end of the fixed seat 20 in the first direction is connected to the housing 10, and the other end of the fixed seat 20 in the first direction is clamped between the housing 10 and the movement bracket 40; an installation hole 11 is formed on the outer side wall of the housing 10, and the key 30 is mounted at the installation hole 11; the key 30 is elastically mounted on the fixed seat 20 and can reciprocate between the housing 10 and the fixed seat 20 along a preset direction; the first direction intersects with the preset direction. By clamping one end of the fixed seat 20 between the housing 10 and the movement bracket 40, the movement bracket 40 provides a stable and continuous supporting force for the fixed seat 20, enhancing the performance of the fixed seat 20 to withstand the pressing and rebounding of the key 30, thereby improving the reliability and stability of the fixed seat 20. At the same time, the other end of the fixed seat being fixed to the housing can ensure a firm connection between the fixed seat and the housing, preventing loosening or falling off during use.

[0060] Further, referring to Figures 4 to 6 , the fixed seat 20 includes a convex portion 21 facing the movement bracket 40; the movement bracket 40 includes a stop projection 41 facing the fixed seat 20; the convex portion 21 abuts against the stop projection 41 in the preset direction.

[0061] In this embodiment, the convex portion 21 can be circular, square, triangular or other geometric shapes to adapt to different designs of the movement bracket 40. The stop projection 41 can be a shape corresponding to the convex portion 21 to achieve precise fitting. According to specific mechanical designs, the sizes of the convex portion 21 and the stop projection 41 can be different to adapt to different installation spaces and force requirements. The fixed seat 20 and the movement bracket 40 can be made of metal, plastic or other engineering materials, and materials with appropriate strength and durability are selected according to application requirements. The mutual abutment of the convex portion 21 and the stop projection 41 provides mechanical locking, enabling the convex portion 21 to provide continuous and stable support for the stop projection 41 in the preset direction to resist the impact force generated by the pressing and rebounding of the key 30 on the fixed seat 20.

[0062] Further, referring to Figures 3 to 6 , the fixed seat 20 includes two convex portions 21; the movement bracket 40 includes two stop projections 41; the two convex portions 21 and the two stop projections 41 are arranged in one-to-one correspondence; the key mounting structure 100 further includes a circuit board 50; the two convex portions 21 are respectively arranged on both sides of the circuit board 50 along the second direction; the first direction, the second direction and the preset direction intersect pairwise.

[0063] In this embodiment, two convex portions 21 provide support for the fixed seat 20 on both sides in the second direction. This can enable the fixed seat 20 to be uniformly stressed, so that the fixed seat 20 is not easily deformed when bearing the pressing / rebounding force of the button 30. The circuit board 50 is provided with a trigger switch 51 to control the opening and closing of the circuit. The two convex portions 21 are respectively arranged on both sides of the circuit board 50 in the second direction to form an avoidance space 42. In this way, the internal space of the button mounting structure 100 is more compact.

[0064] Further, referring to Figures 2 to 6 , the housing 10 is provided with an opening 14 in the first direction; the movement bracket 40 is installed into the housing 10 from the opening 14. In some embodiments, the convex portion 21 is provided with a first guiding inclined surface 211 on one side close to the opening 14 to guide and abut against the stop protrusion 41 in the first direction. In certain embodiments, a second guiding inclined surface 411 that is in guiding cooperation with the convex portion 21 in the first direction is provided on one side of the stop protrusion 41 far from the opening 14. The first guiding inclined surface 211 and / or the second guiding inclined surface 411 can be used as a guide to help the movement bracket 40 smoothly slide in or dock along the installation direction, reducing the resistance during installation. At the same time, the inclined surface design provides a certain degree of flexibility, which can adapt to the minor tolerances in the component manufacturing process and ensure the smooth progress of the assembly.

[0065] In one embodiment, the housing 10 is provided with an opening 14 in the first direction; the movement bracket 40 is installed into the housing 10 from the opening 14. One side of the fixed seat 20 close to the opening 14 is in limit abutment with the movement bracket 40 and the housing 10 in a preset direction; the side of the fixed seat 20 far from the opening 14 is fixedly connected to the housing 10. Since the structure strength at the opening 14 is weaker than other parts, the fixed connection of the fixed seat 20 to the housing 10 on the side far from the opening 14 can reduce the risk of damage to the housing 10 at the opening 14 caused by stress concentration.

[0066] Further, the side of the fixed seat 20 far from the opening 14 is connected to the housing 10 in the first direction. In this way, the fixed seat 20 can be prevented from disengaging from the opening 14.

[0067] Further, the fixing base 20 includes a base 22 and a substrate 23 that are connected to each other; the base 22 extends in the first direction, and one end of the base 22 close to the opening 14 is in limiting abutment with the movement bracket 40 and the housing 10 in a preset direction; the substrate 23 is connected to one end of the base 22 far from the opening 14 and is arranged towards the movement bracket 40 in the preset direction; the substrate 23 is detachably connected to the bottom wall of the housing 10 in the first direction. In this way, the functions of the base 22 and the substrate 23 on the fixing base 20 are partitioned. Specifically, the base 22 is clamped between the movement bracket 40 and the housing 10 and bears the pressing and rebounding of the button 30; the substrate 23 is used to firmly connect to the housing 10. This functional partition can also prevent the base 22 from deforming due to stress concentration on the base 22, thereby improving the bearing capacity and service life of the fixing base 20.

[0068] The detachable connection includes, but is not limited to, threaded connection and snap connection.

[0069] Further, an installation seat 15 is provided on the bottom wall of the housing 10 facing the opening 14. The installation seat 15 is provided with a fixing hole 151. The substrate 23 is provided with a through hole 231 corresponding to the fixing hole 151. The button mounting structure 100 further includes a fastener 60. The fastener 60 passes through the through hole 231 and is connected to the fixing hole 151.

[0070] The fastener 60 includes, but is not limited to, bolts, screws and studs. In this embodiment, threaded connection can be achieved through the fastener 60. Through the tight fit of the threads and the action of the pre-tightening force, the threaded connection can provide a reliable connection effect. At the same time, the threaded connection allows the disassembly and reassembly of parts, which is convenient for maintenance and repair. Compared with other connection methods (snap connection), the threaded connection is more adaptable to the vibration environment and can avoid the loosening or failure of the connection relationship caused by the vibration of the movement. Compared with directly connecting the fastener 60 to the housing 10, the installation seat 15 can disperse the stress at the connection of the fastener 60 and reduce the risk of damage to the housing 10 caused by stress concentration.

[0071] In one embodiment, referring to Figure 7 and Figure 8 , the button mounting structure 100 further includes a circuit board 50 and a seal 70; the button 30 includes a cover body 31 and a rod body 33 connected to the inner side of the cover body 31; a through activity hole is provided on the fixing base 20, and the activity hole corresponds to the rod body 33; the circuit board 50 is arranged on the side of the movement bracket facing the fixing base 20, and a button switch is provided on the side of the circuit board 50 facing the fixing base 20, and the button switch corresponds to the rod body 33; the seal 70 plugs the activity hole, and the seal 70 seals the gap between the fixing base 20 and the housing 10.

[0072] The function of the rod body 33 is to transmit the pressing force received by the cover body 31 to the trigger switch 51 on the circuit board 50 to trigger the corresponding function.

[0073] The seal 70 can be made of rubber, plastic, composite materials, etc., and has a certain elasticity. In this embodiment, the seal 70 effectively prevents external impurities such as water vapor and dust from entering the device interior through the movable hole, thereby protecting the precision machinery and electronic components inside the device from damage. Compared with the case where the seal 70 blocks the movable hole and the seal 70 covers the side of the fixed seat 20 facing away from the button 30, in this embodiment, the seal 70 covering the side of the fixed seat 20 facing the button 30 can reduce the risk of the seal 70 detaching from the fixed seat 20 due to multiple presses of the button 30.

[0074] Further, please refer to Figure 12 and Figure 13 , the fixed seat 20 includes a base 22 and a boss 24 protruding from the base 22; the base 22 is clamped between the housing 10 and the movement bracket 40, the boss 24 is disposed in the mounting hole, the boss 24 is provided with an assembly groove 241 facing the button, and a movable hole is provided on the bottom wall of the assembly groove 241; the seal 70 includes a sealing piece and a first sealing ring 71, the sealing piece is attached to the bottom wall surface of the assembly groove 241, and the first sealing ring 71 is clamped between the outer peripheral surface of the boss 24 and the inner wall surface of the housing 10.

[0075] In this embodiment, the sealing piece 73 is attached to the bottom wall surface of the assembly groove 241, and the seal 70 can closely fit the shape and size of the boss 24, effectively preventing external impurities such as water vapor and dust from entering the interior of the housing 10 through the movable hole.

[0076] The first sealing ring 71 is clamped between the outer peripheral surface of the boss 24 and the inner wall surface of the housing 10, forming an effective sealing barrier. This design ensures the sealing performance between the housing 10 and the boss 24, effectively preventing external impurities such as water vapor and dust from invading the device through the gap between the housing 10 and the boss 24, and improving the waterproof and dustproof performance of the device. At the same time, the close fit of the first sealing ring 71 reduces the direct contact area between the boss 24 and the housing 10, thereby reducing the wear and noise generated by friction. This is beneficial for maintaining the smooth operation of the button 30 structure and extending the service life of the button 30 structure.

[0077] Further, the seal 70 further includes a second sealing ring 72 and a plurality of sealing connection parts 74; the second sealing ring 72 is circumferentially connected to the periphery of the sealing piece 73; the first sealing ring 71 surrounds the outer periphery of the second sealing ring 72 and is connected to the second sealing ring 72 through the plurality of sealing connection parts 74; the second sealing ring 72 is attached to the side wall surface of the assembly groove 241.

[0078] In this embodiment, the second sealing ring 72 is attached to the side wall surface of the assembly groove 241, and the first sealing ring 71 is arranged around the second sealing ring 72, forming a more complex sealing contact surface. This design increases the contact area between the seal 70 and the boss 24 and the housing 10, improving the tightness and stability of the seal. At the same time, the multi-layer sealing structure also disperses the pressure on the sealing contact surface, reducing the risk of seal failure caused by excessive local pressure due to the pressing of the button 30.

[0079] In some embodiments, an annular flange 242 protrudes toward the housing 10 on the outer peripheral surface of one end of the boss 24 facing the button 30; the first sealing ring 71 extends toward the button 30 and covers the outer surface of the annular flange 242.

[0080] In this embodiment, the annular flange 242 and the outer peripheral surface of the boss 24 form a stepped structure. The cooperation of this stepped structure and the first sealing ring 71 reduces the risk of loosening or falling off caused by the vibration of the seal 70 or the pressing impact of the button 30.

[0081] In some other embodiments, referring to Figure 13 , a plurality of notches 2421 are provided on the end surface of one end of the boss 24 facing the button 30; the seal 70 includes a plurality of sealing connection parts 74; the sealing connection parts 74 are embedded in the notches 2421, and the sealing connection parts 74 are embedded in the notches 2421.

[0082] In this embodiment, the provision of the notches 2421 enables the sealing connection parts 74 to be more easily inserted into the correct position during installation. At the same time, the fitting of the sealing connection parts 74 and the notches 2421 also plays a certain limiting role, preventing the seal 70 from shifting or falling off during the installation process. And, compared with the case without the notches 2421, the fitting of the sealing connection parts 74 and the notches 2421 reduces the stacking height formed after the sealing connection parts 74 are installed on the boss 24.

[0083] The sealing connection parts 74 connect the first sealing ring 71 and the second sealing ring 72, ensuring the sealing performance and synergy between them. It should be noted that the first sealing ring 71 is clamped between the housing 10 and the boss 24. Combining with the connection relationship established by the second sealing part 74, the first sealing ring 71 can reduce the risk of loosening or falling off of the second sealing ring 72 caused by the pressing of the button 30. Further, the notches 2421 extend from the end surface of the boss to the outer surface of the annular flange, so as to improve the sealing performance of the combined action of the first sealing ring 71 and the second sealing ring 72 and enhance their synergy.

[0084] In one embodiment, the seal 70 and the fixed seat 20 are formed by two-shot injection molding. In this way, the seal 70 and the fixed seat 20 can be hermetically fitted, further improving the sealing performance. Two-shot injection molding can complete multiple production steps in the same mold, realizing the integrated design of the seal 70 and the fixed seat 20. This design simplifies the product structure, reduces the assembly steps, and improves the production efficiency.

[0085] In one embodiment, referring to Figure 10 and Figure 11 , an installation groove 12 is formed on the inner wall surface of the housing 10 around the installation hole 11. A part of the fixed seat 20 is embedded in the installation groove 12, and a part of the seal 70 is clamped between the inner wall surface of the installation groove 12 and the fixed seat 20.

[0086] In this embodiment, the installation groove 12 provides an accurate embedding position for the fixed seat 20, which helps to ensure the stability and accuracy of the fixed seat 20 during the installation process. By embedding a part of the fixed seat 20 in the installation groove 12, the contact area between the fixed seat 20 and the housing 10 is increased, making the entire installation structure more stable and reliable. The seal 70 is clamped between the inner wall surface of the installation groove 12 and the fixed seat 20, forming a tight sealing structure, effectively preventing the intrusion of external impurities such as water vapor and dust.

[0087] In one embodiment, referring to Figures 4 to 11 , the key installation structure 100 further includes a plurality of elastic members 80; the fixed seat 20 is provided with a plurality of accommodation grooves 2411 surrounding the movable holes towards the key 30; one end of the elastic member 80 abuts against the key 30, and the other end of the elastic member 80 abuts against the bottom wall surface of the accommodation groove 2411.

[0088] The elastic member 80 includes but is not limited to a spring and an elastic gasket. The main function of the elastic member 80 is to reset. When the key 30 is released, the elastic member 80 can quickly push the key 30 back to its original position, ensuring the accuracy and reliability of the key 30. At the same time, the elastic member 80 can also provide tactile feedback to the customer. The accommodation groove 2411 enables the elastic member 80 to be stably fixed on the fixed seat 20, and also makes the installation of the key 30 more convenient and accurate. Through the coordinated action of the elastic member 80 and the accommodation groove 2411, the key 30 is stably supported and positioned. This design reduces the shaking and offset of the key 30 during use, improving the accuracy and durability of the key 30.

[0089] Furthermore, please refer to Figure 13, at least one elastic member 80 is provided on both sides of the movable hole in the first direction and on both sides in the second direction; the preset direction, the first direction, and the second direction are perpendicular to each other pairwise. At least one elastic member 80 is provided on both sides of the movable hole in the first direction, and this layout helps to maintain balance in the first direction when the button 30 is under pressure. At least one elastic member 80 is provided on both sides of the movable hole in the second direction, and this design ensures that the button 30 maintains balance in the second direction when under pressure. The preset direction, the first direction, and the second direction are perpendicular to each other pairwise. The elastic member 80 provides omnidirectional support and restoring force for the button 30, effectively reducing the shaking and offset of the button 30 during use, improving the stability of the button 30, and avoiding jamming of the button 30 due to uneven force.

[0090] Further, referring to Figure 10 and Figure 11 , the button 30 includes a cover body 31 and a limiting portion 32. The cover body 31 is inserted into the mounting hole 11; the limiting portion 32 surrounds and connects to the outer peripheral surface of the cover body 31, and the limiting portion 32 is in limiting abutment with the inner wall surface of the housing 10 in the preset direction.

[0091] In this embodiment, the limiting portion 32 surrounds and connects to the outer peripheral surface of the cover body 31, and its main function is to form limiting abutment with the inner wall surface of the housing 10 in the preset direction. This ensures that the button 30 will not move excessively in the preset direction when under pressure, thereby improving the stability and operation accuracy of the button 30. Through the insertion fit of the cover body 31 and the mounting hole 11 and the limiting abutment of the limiting portion 32 and the inner wall surface of the housing 10, a stable connection between the button 30 and the housing 10 is achieved, and the mounting stability of the button 30 is improved.

[0092] The present utility model also proposes a hair cutting device 200. A hair cutting device is a device used for trimming hair or plush. Such devices are usually used in the beauty, personal care, or animal grooming industries to ensure the neatness and appearance of the hair. The hair cutting device 200 can include tools such as an electric hair clipper, an electric shaver, and a hair trimmer.

[0093] The hair cutting device 200 includes a main body portion of the hair cutting device 200 and a button mounting structure 100. The specific structure of the button mounting structure 100 refers to the above embodiment. Since this hair cutting device 200 adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here. Among them, the main body portion of the hair cutting device 200 is connected to the button mounting structure 100. The main body portion of the hair cutting device 200 includes a cutter head assembly, a power source, a motor, and so on.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A key installation structure, characterized in that, It includes a housing, a fixing base installed in the housing, a button, and a movement mechanism bracket; the movement mechanism bracket is connected to the housing; One end of the fixing base in the first direction is connected to the housing, and the other end of the fixing base in the first direction is clamped between the housing and the movement mechanism bracket; An installation hole is provided on the outer side wall of the housing, and the button is installed at the installation hole; the button is elastically installed on the fixing base and can reciprocate between the housing and the fixing base along a preset direction; The first direction intersects with the preset direction.

2. The key mounting structure according to claim 1, wherein The fixing base includes a convex portion facing the movement mechanism bracket; the movement mechanism bracket includes a stopping protrusion facing the fixing base; the convex portion abuts against the stopping protrusion in the preset direction.

3. The key installation structure according to claim 2, wherein, The housing is provided with an opening in the first direction; the movement mechanism bracket is installed into the housing from the opening; One end of the convex portion close to the opening is provided with a first guiding inclined surface for guiding the stopping protrusion in the first direction; And / or, one end of the stopping protrusion away from the opening is provided with a second guiding inclined surface that is guidingly matched with the convex portion along the first direction.

4. The key mounting structure according to claim 1, characterized in that, The housing is provided with an opening in the first direction; the movement mechanism bracket is installed into the housing from the opening; one end of the fixing base close to the opening is in limiting abutment with the movement mechanism bracket and the housing in the preset direction; the end of the fixing base away from the opening is fixedly connected to the housing.

5. The key mounting structure according to claim 4, wherein The fixing base includes a base and a substrate connected to each other; the base extends along the first direction, and one end of the base close to the opening is in limiting abutment with the movement mechanism bracket and the housing in the preset direction; The substrate is connected to the end of the base away from the opening and is arranged towards the movement mechanism bracket along the preset direction; the substrate is detachably connected to the bottom wall of the housing in the first direction.

6. The key mounting structure according to claim 5, characterized in that, The bottom wall of the housing is provided with a mounting seat facing the opening, the mounting seat is provided with a fixing hole, the substrate is provided with a through hole corresponding to the fixing hole, and the button mounting structure further includes a fastener that passes through the through hole and is connected to the fixing hole.

7. The key mounting structure according to any one of claims 2-6, characterized in that, The button mounting structure further includes a circuit board and a seal; The button includes a cover body and a rod body connected to the inner side of the cover body; a through activity hole is provided on the fixing base corresponding to the rod body; the circuit board is arranged on the side of the movement mechanism bracket facing the fixing base, and a button switch is provided on the side of the circuit board facing the fixing base, and the button switch corresponds to the rod body; The seal plugs the activity hole, and the seal seals the gap between the fixing base and the housing.

8. The key mounting structure according to claim 7, characterized in that, The fixed seat includes a base and a boss protruding from the base; the base is clamped between the housing and the movement bracket, the boss is disposed in the mounting hole, an assembly groove is provided on the boss facing the button, and the movable hole is provided on the bottom wall of the assembly groove; the seal includes a sealing sheet and a first sealing ring, the sealing sheet is attached to the bottom wall surface of the assembly groove, and the first sealing ring is clamped between the outer peripheral surface of the boss and the inner wall surface of the mounting hole.

9. The key mounting structure according to claim 8, wherein, The seal further includes a second sealing ring and a plurality of seal connecting parts; The second sealing ring is connected around the periphery of the sealing sheet; the first sealing ring surrounds the outer periphery of the second sealing ring and is connected to the second sealing ring through a plurality of the seal connecting parts, and the second sealing ring is attached to the side wall surface of the assembly groove.

10. The key mounting structure according to claim 9, characterized in that, A ring-shaped flange protrudes from the outer peripheral surface of one end of the boss facing the button, and the first sealing ring extends towards the button and covers the outer surface of the ring-shaped flange; And / or, a plurality of notches are provided on the end face of one end of the boss facing the button, and the seal connecting parts are embedded in the notches.

11. The key installation structure according to claim 7, characterized in that, The button mounting structure further includes a plurality of elastic members; the fixed seat is provided with a plurality of accommodation grooves surrounding the movable hole and facing the button; one end of the elastic member abuts against the button, and the other end of the elastic member abuts against the bottom wall surface of the accommodation groove.

12. The key mounting structure according to claim 11, wherein, At least one elastic member is provided on both sides of the movable hole in the first direction and on both sides in the second direction; the preset direction, the first direction, and the second direction are perpendicular to each other in pairs.

13. The key installation structure according to claim 1, characterized in that, The button includes a cover body and a limiting portion; the cover body is inserted into the mounting hole; the limiting portion is connected around the outer peripheral surface of the cover body, and the limiting portion is in limit abutment with the inner wall surface of the housing in the preset direction.

14. A hair cutting device, characterized in that, It includes the button mounting structure according to any one of claims 1-13 and the main body part of the hair clipper, and the main body part of the hair clipper is connected to the button mounting structure.

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