actuator

Abstract

The utility model relates to the technical field of automobile parts, provide an executor, including execution casing, execution push rod and sealing structure, execution casing is equipped with chamber, chamber inner wall is equipped with guide recess, execution push rod one part is located in the chamber, another part is located outside the chamber, execution push rod is retractable movement relative to the chamber, execution push rod is equipped with guide boss, guide boss is located in the chamber, guide boss and guide recess are slidably inserted and set cooperation;Sealing structure is located outside the chamber, and sealing structure is used for sealing the clearance of execution push rod and chamber, when execution push rod moves, guide boss and guide recess cooperation always keep in the chamber, and realize clearance sealing through sealing structure, effectively prevent the invasion of external contaminant, avoid the impurity influence the smoothness of movement, structure is simpler, and further simplifies the manufacturing process, improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an actuator. Background Technology

[0002] In the field of automotive parts technology, automobiles are usually equipped with actuators for opening and closing various covers (such as charging port covers and fuel filler caps). By pressing the corresponding position on the cover and the actuator, the actuator's push rod is moved to open and close the cover.

[0003] In the production process of existing actuators, it is usually necessary to create a track, such as a groove, on the side wall of the push rod to guide its movement. However, the above design has some problems: First, the push rod track is exposed to the outside of the actuator during movement, which can easily lead to external impurities such as fine particles entering the track, thus affecting the push rod's movement and consequently the smoothness of the actuator's operation; second, the structure of the above actuator is relatively complex, and the assembly process is also relatively cumbersome. Utility Model Content

[0004] This utility model provides an actuator to solve the problems of smooth operation, complex structure, and cumbersome assembly process of actuators in related technologies.

[0005] This utility model provides an actuator, comprising:

[0006] The actuator housing has a chamber, and the inner wall of the chamber has a guide groove.

[0007] An actuator push rod is located partly inside the cavity and partly outside the cavity. The actuator push rod is telescopically movable relative to the cavity. The actuator push rod is provided with a guide protrusion located inside the cavity. The guide protrusion is slidably inserted into and engaged with the guide groove.

[0008] A sealing structure is provided on the actuator housing, the sealing structure is located outside the chamber, and the sealing structure is used to seal the gap between the actuator push rod and the chamber.

[0009] According to the present invention, an actuator is provided in which the guide groove is spirally arranged on the inner peripheral wall of the chamber, and the guide protrusion is provided on the outer peripheral wall of the actuator push rod.

[0010] According to the present invention, an actuator is provided, wherein the sealing structure is a sealing cylinder provided on the actuator housing, the sealing cylinder is sleeved on the outer peripheral wall of the actuator push rod, and the inner peripheral wall of the sealing cylinder is radially provided with a first sealing part and a second sealing part, both of which abut against the outer peripheral wall of the actuator push rod.

[0011] The first sealing part is located at one end of the sealing cylinder away from the actuator housing, and the second sealing part is located between the first sealing part and one end of the sealing cylinder near the actuator housing.

[0012] According to the present invention, the sealing structure and the actuator housing are configured as an integrally formed structure.

[0013] According to the present invention, an actuator is provided with a pushing part and a clutch part on the actuator push rod, and the actuator further includes a spring-back self-locking structure, the spring-back self-locking structure comprising:

[0014] A locking ring is movably disposed in the cavity. The locking ring is provided with a transmission part and a locking part. The pushing part can move with the actuating push rod to engage with the transmission part to drive the locking ring to rotate relative to the cavity. The clutch part can move with the actuating push rod to engage with or disengage from the locking part.

[0015] A spring-back reset member is disposed between the locking ring and the chamber of the actuator housing, and the spring-back reset member is used to drive the locking ring to reset;

[0016] The clutch part and the locking part are engaged in vertical contact along the axial direction of the actuating push rod, and the actuating push rod is axially fixed relative to the locking ring.

[0017] The clutch part separates from the locking part, and the actuator push rod and the locking ring can move axially relative to each other.

[0018] According to the present invention, an actuator is provided in which a limiting part is provided on the inner peripheral wall of the chamber, and a locking ring is movably located between the limiting part and the bottom wall of the chamber.

[0019] The locking ring is also provided with a locking part, which engages with the limiting part to restrict the movement of the locking ring relative to the chamber.

[0020] According to the present invention, an actuator is provided in which the bottom wall of the chamber is provided with an anti-rotation part, and the actuator push rod is provided with a positioning part, wherein the positioning part and the anti-rotation part are in left-right abutment cooperation along the radial direction of the actuator push rod;

[0021] While the clutch part and the locking part are engaged, the anti-rotation part and the positioning part are engaged to restrict the radial rotation of the actuator push rod.

[0022] According to the present invention, an actuator is provided with a limiting platform on the inner peripheral wall of the chamber, and the projections of the pushing part and the limiting platform on the bottom wall of the chamber at least partially overlap.

[0023] The pushing part cooperates with the limiting platform to prevent the actuating push rod from disengaging from the chamber.

[0024] According to the present invention, an actuator is provided in which the actuator housing is provided with a first guide portion and the actuator push rod is provided with a second guide portion along its axial direction, and the first guide portion and the second guide portion are slidably inserted into each other;

[0025] An elastic element for driving the actuator push rod to reset is provided between the first guide portion and the second guide portion.

[0026] According to the present invention, an actuator is provided, the actuator housing comprising:

[0027] The outer casing has a hollow mounting channel;

[0028] A bottom shell is fixedly connected to the outer shell. The bottom shell is provided with a mounting groove, and one end of the outer shell is inserted into the mounting groove. The mounting channel and the mounting groove cooperate to form the chamber.

[0029] The first guide portion is disposed within the mounting groove.

[0030] The actuator provided by this utility model features a guide groove designed inside the chamber, and a guide protrusion on the actuator push rod that slides in conjunction with the guide groove. A sealing structure is configured outside the chamber to ensure that, during the movement of the actuator push rod relative to the chamber, the guide protrusion and guide groove remain within the chamber, and the sealing structure achieves gap sealing, effectively preventing the intrusion of external contaminants and avoiding impurities affecting the smoothness of movement. Furthermore, compared to a grooved track on the actuator push rod, this utility model simplifies the actuator push rod structure by using a guide protrusion, thereby simplifying the manufacturing process and improving assembly efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the actuator provided by this utility model.

[0033] Figure 2 This is a cross-sectional schematic diagram of the actuator provided by this utility model.

[0034] Figure 3 This is an exploded view of the actuator provided by this utility model.

[0035] Figure 4 This is a cross-sectional schematic diagram of the outer shell provided by this utility model.

[0036] Figure 5 This is a cross-sectional schematic diagram of the locked state of the actuator push rod and the locking ring provided by this utility model.

[0037] Figure 6 This is a cross-sectional schematic diagram of the unlocked state of the actuator push rod and the locking ring provided by this utility model.

[0038] Figure label:

[0039] 100. Actuating housing; 110. Chamber; 111. Guide groove; 112. Limiting part; 1121. Limiting tooth; 113. Anti-rotation part; 1131. Anti-rotation protrusion;

[0040] 114. Limiting platform; 120. First guide section; 121. Insertion channel; 130. Housing; 131. Installation channel; 132. First positioning groove;

[0041] 133. Second positioning groove; 140. Bottom shell; 141. Mounting groove;

[0042] 200. Actuating push rod; 210. Guide protrusion; 220. Pushing part; 221. First boss;

[0043] 230, Clutch part; 231, Second boss; 240, Positioning part; 241, Positioning groove; 250, Second guide part; 251, Insertion protrusion; A, Snap-fit ​​part;

[0044] 300, sealing structure; 310, first sealing part; 320, second sealing part; 330, first positioning protrusion; 340, second positioning protrusion;

[0045] 400. Spring-rebound self-locking structure; 410. Locking ring; 411. Transmission part; 4111. Transmission groove; 412. Locking part; 4121. Locking protrusion; 413. Locking part; 4131. Locking groove; 420. Spring-rebound reset part; 500. Elastic element. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0047] The following is combined with Figures 1-6 This invention describes an actuator, which includes an actuator housing 100, an actuator push rod 200, a sealing structure 300, and a spring-loaded self-locking structure 400.

[0048] Understandably, referring to Figures 1 to 3 In some examples of this utility model, the actuator housing 100 is provided with a chamber 110, and the inner wall of the chamber 110 is provided with a guide groove 111; part of the actuator push rod 200 is located inside the chamber 110, and the other part is located outside the chamber 110. The actuator push rod 200 is telescopically movable relative to the chamber 110. The actuator push rod 200 is provided with a guide protrusion 210, which is located inside the chamber 110. The guide protrusion 210 and the guide groove 111 are slidably inserted and engaged; the sealing structure 300 is provided on the actuator housing 100, and the sealing structure 300 is located outside the chamber 110. The sealing structure 300 is used to seal the gap between the actuator push rod 200 and the chamber 110.

[0049] It should be noted that, in this embodiment of the invention, an actuator is installed on the corresponding cover of the vehicle, such as a charging port cover or a fuel filler cap. The upper end of the actuator's push rod 200 is provided with a locking part A, and the cover is provided with a latching part. The locking part A cooperates with the latching part (e.g., the locking or disengaging of a locking block and a locking slot). After pressing the cover, through the telescopic movement of the push rod 200, such as telescopic movement and rotation, the locking part A rotates and engages with the latching part, or the locking part A rotates in the opposite direction and disengages from the latching part, thereby realizing the closing and opening of the cover. Of course, in some other examples, the telescopic movement of the push rod 200 may only include telescopic movement, for example, the telescopic movement of the push rod 200 can be magnetically engaged with the cover, which is not limited here. It should also be understood that the actuator can also be used for opening and closing covers in other fields besides automobiles, such as humidifier covers and heat preservation covers.

[0050] The actuator provided by this utility model features a guide groove 111 designed inside the chamber 110, and a guide protrusion 210 on the actuator push rod 200 that slides in cooperation with the guide groove 111. A sealing structure 300 is configured outside the chamber 110 to ensure that during the movement of the actuator push rod 200 relative to the chamber 110, the guide protrusion 210 and the guide groove 111 remain within the chamber 110, and the sealing structure 300 achieves a gap seal, effectively preventing the intrusion of external contaminants and avoiding impurities affecting the smoothness of movement. Furthermore, compared to setting a groove-shaped track on the actuator push rod 200, this utility model simplifies the structure of the actuator push rod 200 by setting the guide protrusion 210, thereby simplifying the manufacturing process and improving assembly efficiency.

[0051] Understandably, referring to Figure 2 , Figure 4 and Figure 5 In some examples of this utility model, the guide groove 111 is spirally arranged on the inner peripheral wall of the chamber 110, and the guide protrusion 210 is provided on the outer peripheral wall of the actuator push rod 200. With the above structure, when the actuator push rod 200 moves telescopically relative to the chamber 110, due to the spiral arrangement of the guide groove 111, and with the cooperation of the guide protrusion 210 and the guide groove 111, when the actuator push rod 200 is pressed, the actuator push rod 200 realizes axial movement and rotational movement relative to the chamber 110. This not only provides a composite motion mode, realizes precise positioning and efficient force transmission, but also maintains the compactness of the structure and the smoothness of the movement.

[0052] For specific examples, refer to Figure 4 A portion of the inner peripheral wall of the aforementioned chamber 110 is recessed and inclined to form a guide groove 111. In some examples, two helical protrusions are spaced apart on the inner peripheral wall of the chamber 110, and the aforementioned guide groove 111 is formed between the two helical protrusions.

[0053] Understandably, referring to Figures 1 to 3 In some examples of this utility model, the sealing structure 300 is a sealing cylinder provided on the execution housing 100. The sealing cylinder is sleeved on the outer peripheral wall of the execution push rod 200. The inner peripheral wall of the sealing cylinder is radially protruding with a first sealing part 310 and a second sealing part 320. Both the first sealing part 310 and the second sealing part 320 abut against the outer peripheral wall of the execution push rod 200.

[0054] The first sealing part 310 is located at one end of the sealing cylinder away from the actuator housing 100, and the second sealing part 320 is located between the first sealing part 310 and one end of the sealing cylinder near the actuator housing 100.

[0055] Through the above structure, the first sealing part 310 acts as the main sealing dust barrier, blocking most external pollutants from entering; the second sealing part 320 acts as a secondary defense line, forming a labyrinthine sealing path. Even if a small number of particles break through the first seal, they will be blocked and discharged by the reverse gap of the second sealing part 320, significantly reducing the probability of pollutant intrusion; the annular cavity formed between the two sealing parts can accommodate a small amount of intruding medium. Through the pressure fluctuations generated by the reciprocating motion of the push rod, the trapped particles are actively discharged, avoiding the accumulation of impurities that lead to seal failure; the first sealing part 310 is located at the vulnerable end and preferentially bears frictional wear. Even after its wear, the second sealing part 320 can still maintain the basic sealing function, extending the overall sealing life. Therefore, the above sealing structure 300, while ensuring sealing reliability, integrates the traditional multi-component sealing system into a single sealing cylinder, simplifying the assembly process and reducing maintenance difficulty.

[0056] Of course, in some examples, the sealing cylinder may also be provided with a third sealing part, a fourth sealing part, etc., which is not limited here.

[0057] It should also be noted that in some other examples, the sealing structure 300 described above can also be a sealing ring.

[0058] Reference Figure 1 In some examples, the sealing structure 300 and the actuator housing 100 are configured as an integrally formed structure. This configuration eliminates the seam between the actuator housing 100 and the sealing cylinder, eradicating micro-leakage channels caused by accumulated assembly errors in traditional split structures, forming a continuous and complete sealing barrier, improving the protection level, and helping to eliminate weak points such as connecting bolts or clips, reducing the number of parts, improving overall integrity, and reducing assembly errors.

[0059] It should be noted that the sealing structure 300 is injection molded with the actuator housing 100 after the sealing structure 300 is formed, or the sealing structure 300 and the actuator housing 100 are injection molded simultaneously, is not limited here.

[0060] It is understandable that the aforementioned sealing structure 300 is made of a flexible material, such as rubber. The flexible material can fit tightly against the outer peripheral wall of the actuator push rod 200, always maintaining good sealing contact and effectively preventing external impurities such as dust and moisture from entering the actuator.

[0061] Of course, in some examples, the sealing structure 300 can also be made of rigid materials, such as metal or rigid plastic, or the sealing structure 300 can be made of a combination of rigid and flexible materials.

[0062] Understandably, in specific examples, refer to Figures 2 to 4The outer peripheral wall of the aforementioned sealing cylinder is provided with a plurality of first positioning protrusions 330, and the actuator housing 100 is provided with a plurality of first positioning grooves 132. The first positioning protrusions 330 and the first positioning grooves 132 correspond one-to-one and are inserted into each other to restrict the sealing cylinder from rotating circumferentially relative to the actuator housing 100, thereby preventing the sealing cylinder from being driven to rotate by the actuator push rod 200 and improving the stability and reliability of the sealing cylinder.

[0063] For specific examples, refer to Figures 2 to 4 The sealing cylinder is further provided with a second positioning protrusion 340 located below the first positioning protrusion 330, and the actuator housing 100 is provided with a second positioning groove 133. The second positioning protrusion 340 and the second positioning groove 133 are inserted and fitted together, which further improves the stability and reliability of the sealing cylinder. The number of the second positioning protrusion 340 and the second positioning groove 133 can be set as needed, and is not limited here.

[0064] Understandably, referring to Figure 2 , Figures 4 to 6 In some examples of this utility model, the actuator push rod 200 is provided with a pushing part 220 and a clutch part 230. The spring-loaded self-locking structure 400 includes a locking ring 410 and a spring-loaded reset member 420. The locking ring 410 is movably disposed in the chamber 110. The locking ring 410 is provided with a transmission part 411 and a locking part 412. The pushing part 220 can move with the actuator push rod 200 to engage with the transmission part 411 to drive the locking ring 410 to rotate relative to the chamber 110. The clutch part 230 can move with the actuator push rod 200 to engage with the transmission part 411 to drive the locking ring 410 to rotate relative to the chamber 110. The lever 200 moves to engage or disengage with the locking part 412; the spring-back reset member 420 is disposed between the locking ring 410 and the chamber 110 of the actuator housing 100, and the spring-back reset member 420 is used to drive the locking ring 410 to reset; wherein, the clutch part 230 and the locking part 412 engage vertically along the axial direction of the actuator push rod 200, and the actuator push rod 200 is axially fixed relative to the locking ring 410; when the clutch part 230 disengages from the locking part 412, the actuator push rod 200 and the locking ring 410 can move axially relative to each other.

[0065] With the above configuration, the spring-loaded self-locking structure 400 achieves unidirectional locking and unlocking functions through the dynamic engagement of the clutch part 230 and the locking part 412. When the actuator 200 is pressed, it engages with the guide rail via the guide protrusion 210 to achieve a displacement rotation process. When the clutch part 230 abuts against the locking part 412, the actuator 200 and the locking ring 410 form a rigid connection, preventing the actuator 200 from moving axially in the opposite direction, thus achieving self-locking. When the clutch part 230 separates from the locking part 412, the actuator 200 can move axially independently, while the spring-loaded reset member 420 drives the locking ring 410 to reset, preparing for the next locking. This design, through the linkage control of the push part 220 and the transmission part 411, controls the switching of the locking state, combining motion transmission and mechanical locking functions to form a unidirectional controllable self-locking-unlocking mechanism.

[0066] During locking: During the displacement and rotation of the actuator push rod 200, the transmission part 411 is pushed by the push part 220, thereby driving the locking ring 410 to move towards the bottom wall of the chamber 110, that is, downwards. The locking ring 410 is pushed downwards by the actuator push rod 200 and rotates for the first time. After the locking ring 410 rotates for the first time, when the actuator push rod 200 does not apply force, the locking ring 410 is pushed by the return force of the spring reset member 420, which pushes the locking ring 410 to achieve a second rotation. At the same time, the clutch part 230 of the actuator push rod 200 abuts and engages with the locking part 412, thereby restricting the relative axial movement of the actuator push rod 200 and the locking ring 410 to achieve the locking purpose.

[0067] During unlocking: Similarly, pressing the actuator 200 again pushes the transmission part 411, which is pushed by the push part 220, thereby driving the locking ring 410 to move downwards towards the bottom wall of the chamber 110. The locking ring 410 is pushed downwards by the actuator 200 and rotates for the first time. After the locking ring 410 rotates for the first time, when the actuator 200 is not applied, the locking ring 410 is pushed by the return force of the spring reset member 420, which pushes the locking ring 410 to achieve a second rotation. At the same time, the clutch part 230 of the actuator 200 separates from the locking part 412, so that the actuator 200 can move relative to the locking ring 410 to achieve the unlocking purpose.

[0068] Understandably, referring to Figure 2 and Figure 4 In some examples, the inner peripheral wall of the chamber 110 is provided with a limiting part 112, and the locking ring 410 is movably located between the limiting part 112 and the bottom wall of the chamber 110.

[0069] The locking ring 410 is also provided with a locking part 413, which engages with the limiting part 112 to restrict the movement of the locking ring 410 relative to the chamber 110.

[0070] It can be understood that the limiting part 112 and the bottom wall of the chamber 110 form the movement space of the locking ring 410. The position of the limiting part 112 is the limit position of the axial movement of the locking ring 410. Therefore, the locking part 413 engages with the limiting part 112 to restrict the movement of the locking ring 410 relative to the chamber 110, that is, the locking ring 410 cannot be displaced or rotated relative to the chamber 110.

[0071] When locking or unlocking, the locking part 413 needs to disengage from the limiting part 112, allowing the locking ring 410 to rotate. Therefore, when the pushing part 220 of the actuator 200 pushes the transmission part 411, and subsequently pushes the locking ring 410 downward, the locking part 413 can disengage from the limiting part 112.

[0072] When the actuator 200 pushes the locking ring 410 downwards, the locking part 413 disengages from the limiting part 112, releasing the axial constraint and freeing the rotational degree of freedom of the locking ring 410, thus allowing the locking state to be adjusted by rotation. Conversely, during the reverse movement, the locking part 413 re-engages with the limiting part 112, forming a mechanical interlock. This structure can complete the locking / unlocking switch with a single axial displacement operation, eliminating the need for a traditional rotary unlocking mechanism, simplifying the control logic and improving reliability.

[0073] It should be noted that the aforementioned springback reset component 420 is a cylindrical first compression spring. One end of the first compression spring is abutted and fixed to the lower part of the locking ring 410, and the other end is abutted and fixed to the bottom wall of the chamber 110. When the locking ring 410 moves, the first compression spring will undergo displacement deformation. When the locking ring 410 rotates, the first compression spring will undergo torsional deformation. When the locking part 112 and the locking part 413 are released, the first compression spring can torsion reset and drive the locking ring 410 to reset, so that the locking ring 410 is fixed or separated from the actuator push rod 200.

[0074] Of course, in one example, the aforementioned springback reset element 420 can also be an elastic plate or the like, and is not limited here.

[0075] Reference Figure 2 , Figure 3 and Figure 5 In some examples of this utility model, the bottom wall of the chamber 110 is provided with an anti-rotation part 113, and the actuator push rod 200 is provided with a positioning part 240. The positioning part 240 and the anti-rotation part 113 are in left-right abutment cooperation along the radial direction of the actuator push rod 200.

[0076] While the clutch part 230 and the locking part 412 are engaged, the anti-rotation part 113 and the positioning part 240 are engaged to restrict the radial rotation of the actuator push rod 200.

[0077] In a specific example, the anti-rotation part 113 and the positioning part 240 are engaged in an embedded snap-fit ​​manner. Of course, in other examples, the rotating part and the positioning part 240 can also be engaged in an abutment manner with their opposite side walls arranged side by side, which is not limited here.

[0078] While the clutch part 230 abuts against the locking part 412, the anti-rotation part 113 engages with the positioning part 240, thereby restricting axial movement and radial rotation, ensuring reliable positioning.

[0079] For specific examples, refer to Figures 4 to 6 The limiting part 112 includes a plurality of limiting protrusions 1121 axially arranged along the inner peripheral wall of the chamber 110; the pushing part 220 includes a plurality of first protrusions 221 radially arranged along the outer peripheral wall of the actuator push rod 200; and the clutch part 230 includes a plurality of second protrusions 231 radially arranged along the outer peripheral wall of the actuator push rod 200.

[0080] The transmission part 411 is located between the locking part 413 and the locking part 412. The transmission part 411 includes a plurality of transmission grooves 4111 axially arranged along the peripheral wall of the locking ring 410. The locking part 412 includes a plurality of locking protrusions 4121 radially arranged along the inner peripheral wall of the locking ring 410. The locking part 413 includes a plurality of locking grooves 4131 axially arranged along the outer peripheral wall of the locking ring 410.

[0081] The anti-rotation part 113 includes two anti-rotation protrusions 1131 provided on the bottom wall of the chamber 110, and the positioning part 240 includes positioning grooves 241 opened on opposite sides of the actuator push rod 200. The positioning grooves 241 correspond one-to-one with the anti-rotation protrusions 1131 and are engaged.

[0082] The projections of the first protrusion 221 and the second protrusion 231 on the bottom wall of the chamber 110 are misaligned; a portion of the structure of the locking protrusion 4121 is aligned with the connection point of the two adjacent transmission grooves 4111, and the projections of the connection point of the two adjacent transmission grooves 4111 and the connection point of the two adjacent locking grooves 4131 on the bottom wall of the chamber 110 are misaligned.

[0083] In this embodiment, under the locking condition: the actuator 200 is pressed, and one end of the actuator 200 is inserted into the locking ring 410. The pushing part 220 is located above the transmission part 411, and the clutch part 230 is located inside the locking ring 410, forming an embedded fit. The pushing part 220 abuts against the transmission part 411, and the locking ring 410 is pushed down by the actuator 200 and rotates for the first time. After the locking ring 410 rotates for the first time, when the actuator 200 does not apply force, the locking ring 410 is pushed by the return force of the spring-loaded reset member 420, which pushes the locking ring 410 to achieve a second rotation. The clutch part 230 is positioned below the locking part 412 and abuts against it, forming a reliable axial blocking structure. The positioning groove 241 and the anti-rotation protrusion 1131 engage, effectively restricting the relative movement between the actuator 200 and the locking ring 410. Meanwhile, the locking groove 4131 on the locking ring 410 precisely engages with the limiting protrusion 1121 of the limiting part 112 of the chamber 110, constraining the locking ring 410 to the limit position of the movement stroke. This dual constraint mechanism (axial blocking + radial engagement) ensures that the position of the actuator 200 is firmly locked, achieving zero displacement accuracy maintenance.

[0084] In the unlocking condition: When the actuator push rod 200 is pressed again, the locking ring 410 moves down with the actuator push rod 200, the pushing part 220 abuts against the transmission part 411, and the locking ring 410 moves down under the push of the actuator push rod 200. The locking groove 4131 separates from the limiting protrusion 1121, and the locking ring 410 rotates for the first time. After the locking ring 410 rotates for the first time, when the actuator push rod 200 does not apply force, the locking ring 410 is pushed by the reset thrust of the spring reset member 420, which pushes the locking ring 410 to achieve a second rotation. When the clutch part 230 moves above the locking part 412 and separates, the axial blocking function is released, and the positioning groove 241 separates from the anti-rotation groove, releasing the radial rotation function restriction, so that the actuator push rod 200 has free movement space relative to the locking ring 410. However, the locking ring 410 is still maintained at its travel limit position by the locking groove 4131 and the limiting protrusion 1121, maintaining its precise positioning in the chamber 110. This design cleverly achieves a balance between freedom of movement and stable positioning, ensuring that the push rod 200 can be freely operated in the unlocked state while ensuring that the locking ring 410 itself is always in the preset working position.

[0085] Understandably, referring to Figure 2 and Figure 4 In some examples of this utility model, the inner peripheral wall of the chamber 110 is provided with a limiting platform 114, and the projections of the pushing part 220 and the limiting platform 114 on the bottom wall of the chamber 110 at least partially overlap; the pushing part 220 cooperates with the limiting platform 114 to restrict the actuating push rod 200 from leaving the chamber 110.

[0086] The overlapping design of the limiting platform 114 and the pushing part 220 projected onto the bottom wall of the chamber 110 forms a mechanical anti-detachment barrier. By integrating the anti-detachment function into the structure of the limiting platform 114 on the inner peripheral wall of the chamber 110, no additional anti-detachment components are needed, which saves internal space of the chamber 110, reduces the number of parts, and improves the compactness of the mechanism.

[0087] It should be noted that in this embodiment, a guide protrusion 210 is provided on the radial end face of one of the first protrusions 221, which realizes the improvement of structural compactness and optimization of space utilization.

[0088] Of course, in some embodiments, the limiting part 112 includes a limiting protrusion 1121, the pushing part 220 includes a first boss 221, the clutch part 230 includes a second boss 231; the transmission part 411 includes a transmission groove 4111, the locking part 412 includes a locking protrusion 4121, the locking part 413 includes a locking groove 4131, the positioning part 240 includes a positioning groove 241, and the anti-rotation part 113 includes an anti-rotation protrusion 1131. The number of the above-mentioned component structures is not limited here.

[0089] It should also be noted that in some examples, the limiting part 112 and the anti-rotation part 113 can also be configured as a groove-shaped structure, while the locking part 413 and the positioning part 240 are respectively configured as protrusion-shaped structures. This is not a limitation here.

[0090] Understandably, referring to Figure 2 In some examples, the actuator housing 100 is provided with a first guide portion 120, and the actuator push rod 200 is provided with a second guide portion 250 along its axial direction. The first guide portion 120 and the second guide portion 250 are slidably inserted and engaged. An elastic element 500 for driving the actuator push rod 200 to reset is provided between the first guide portion 120 and the second guide portion 250.

[0091] With the above structure, when the actuator is working, the actuator push rod 200 moves in the direction of the first guide part 120 and the second guide part 250 under the pressing drive. Since the first guide part 120 and the second guide part 250 are inserted and engaged, this structure not only effectively limits the radial offset of the actuator push rod 200 and ensures that it moves accurately along the preset trajectory, but also the elastic element 500 between the first guide part 120 and the second guide part 250 generates a reverse force after the push rod moves to the position. The energy stored by the elastic deformation drives the actuator push rod 200 to reset to the initial position, thereby realizing reliable control of reciprocating motion. This design cleverly integrates the guiding function and the reset mechanism into the same component, which not only ensures the motion accuracy but also simplifies the complexity of the mechanism.

[0092] Reference Figures 2 to 4In some examples of this utility model, the execution housing 100 includes an outer shell 130 and a bottom shell 140. The outer shell 130 is provided with a hollow mounting channel 131. The bottom shell 140 is fixedly connected to the outer shell 130 and is provided with a mounting groove 141. One end of the outer shell 130 is inserted into the mounting groove 141. The mounting channel 131 and the mounting groove 141 cooperate to form a chamber 110. The first guide portion 120 is provided in the mounting groove 141.

[0093] Through the above structure, the actuator housing 100 is innovatively decomposed into two independent components: the outer shell 130 and the bottom shell 140. The hollow mounting channel 131 of the outer shell 130 and the mounting groove 141 of the bottom shell 140 form a nested assembly structure. After one end of the outer shell 130 is precisely inserted into the mounting groove 141 of the bottom shell 140, the two together enclose and form a sealed chamber 110. This split design not only realizes the modular construction of the chamber 110, but also allows the first guide part 120 to be cleverly integrated into the mounting groove 141. This fully utilizes the structural space of the bottom shell 140, and the tight fit between the outer shell 130 and the bottom shell 140 ensures the installation accuracy and operational stability of the first guide part 120 and the second guide part 250. While ensuring functional integrity, this structure significantly improves assembly efficiency and maintenance convenience. When it is necessary to replace or maintain the actuator, only the bottom shell 140 needs to be disassembled to complete the operation, making maintenance convenient.

[0094] It should be noted that the fixed connection between the outer shell 130 and the bottom shell 140 is a combination of snap-fit ​​connection and bolt connection. Of course, in other examples, it can also be achieved by other methods, such as welding, or a single snap-fit ​​connection, or a single bolt connection, etc., which are not limited here.

[0095] Specifically, refer to Figure 2 In this embodiment of the present invention, the first guide portion 120 is a guide post, the lower end of which is integrally formed with the bottom wall of the chamber 110, and an insertion channel 121 is provided inside the guide post. Figure 5 and Figure 6 The second guide section 250 is a guide cavity arranged along the axial direction of the actuator push rod 200. The guide cavity is provided with an insertion protrusion 251. The guide post is inserted into the guide cavity, and the insertion protrusion 251 is inserted into the insertion channel 121. The elastic element 500 is a cylindrical second compression spring. The second compression spring is located in the insertion channel 121 and sleeved on the outer wall of the insertion protrusion 251. One end of the second compression spring abuts against the bottom wall of the insertion channel 121, and the other end abuts against the upper top wall of the guide cavity, thereby driving the actuator push rod 200 to move and reset.

[0096] Of course, in some embodiments, the first guide portion 120 may also be a guide cavity, and the second guide portion 250 may also be a guide post; this is not limited here. Additionally, in some examples, the elastic element 500 may also be an elastic plate, etc.; this is not limited here.

[0097] It should be noted that the aforementioned anti-rotation part 113 is provided on the outer wall of the first guide part 120, i.e., the guide column, and the positioning part 240 is provided on the inner wall of the second guide part 250, i.e., the guide chamber 110; the guide groove 111, the limiting part 112, the limiting platform 114, the first positioning groove 132 and the second positioning groove 133 are all formed on the outer shell 130.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An actuator, characterized in that, include: The actuator housing has a chamber, and the inner wall of the chamber has a guide groove. An actuator push rod is located partly inside the cavity and partly outside the cavity. The actuator push rod is telescopically movable relative to the cavity. The actuator push rod is provided with a guide protrusion located inside the cavity. The guide protrusion is slidably inserted into and engaged with the guide groove. A sealing structure is provided on the actuator housing, the sealing structure is located outside the chamber, and the sealing structure is used to seal the gap between the actuator push rod and the chamber.

2. The actuator of claim 1, wherein, The guide groove is spirally arranged on the inner peripheral wall of the chamber, and the guide protrusion is provided on the outer peripheral wall of the actuator.

3. The actuator of claim 1, wherein, The sealing structure is a sealing cylinder provided on the actuator housing. The sealing cylinder is sleeved on the outer peripheral wall of the actuator push rod. The inner peripheral wall of the sealing cylinder is radially provided with a first sealing part and a second sealing part. The first sealing part and the second sealing part abut against and cooperate with the outer peripheral wall of the actuator push rod. The first sealing part is located at one end of the sealing cylinder away from the actuator housing, and the second sealing part is located between the first sealing part and one end of the sealing cylinder near the actuator housing.

4. The actuator according to any one of claims 1 to 3, characterized in that The sealing structure and the execution housing are configured as an integrally formed structure.

5. The actuator of claim 1, wherein, The actuator push rod is provided with a pushing part and a clutch part, and the actuator also includes a spring-back self-locking structure, the spring-back self-locking structure comprising: A locking ring is movably disposed in the cavity. The locking ring is provided with a transmission part and a locking part. The pushing part can move with the actuating push rod to engage with the transmission part to drive the locking ring to rotate relative to the cavity. The clutch part can move with the actuating push rod to engage with or disengage from the locking part. A spring-back reset member is disposed between the locking ring and the chamber of the actuator housing, and the spring-back reset member is used to drive the locking ring to reset; The clutch part and the locking part are engaged in vertical contact along the axial direction of the actuating push rod, and the actuating push rod is axially fixed relative to the locking ring. The clutch part separates from the locking part, and the actuator push rod and the locking ring can move axially relative to each other.

6. The actuator of claim 5, wherein, The inner peripheral wall of the chamber is provided with a limiting part, and the locking ring is movably located between the limiting part and the bottom wall of the chamber; The locking ring is also provided with a locking part, which engages with the limiting part to restrict the movement of the locking ring relative to the chamber.

7. The actuator of claim 5, wherein, The bottom wall of the chamber is provided with an anti-rotation part, and the actuator push rod is provided with a positioning part. The positioning part and the anti-rotation part are in left-right abutment cooperation along the radial direction of the actuator push rod. While the clutch part and the locking part are engaged, the anti-rotation part and the positioning part are engaged to restrict the radial rotation of the actuator push rod.

8. The actuator according to any one of claims 5 to 7, characterized in that The inner peripheral wall of the cavity is provided with a limiting platform, and the projections of the pushing part and the limiting platform on the bottom wall of the cavity at least partially overlap. The pushing part cooperates with the limiting platform to prevent the actuating push rod from disengaging from the chamber.

9. The actuator of claim 1, wherein, The actuator housing is provided with a first guide portion, and the actuator push rod is provided with a second guide portion along its axial direction. The first guide portion and the second guide portion are slidably inserted into each other. An elastic element for driving the actuator push rod to reset is provided between the first guide portion and the second guide portion.

10. The actuator of claim 9, wherein, The execution housing includes: The outer casing has a hollow mounting channel; A bottom shell is fixedly connected to the outer shell. The bottom shell is provided with a mounting groove, and one end of the outer shell is inserted into the mounting groove. The mounting channel and the mounting groove cooperate to form the chamber. The first guide portion is disposed within the mounting groove.

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