Linear actuator

Abstract

This utility model discloses a linear actuator, including a housing assembly, a drive assembly, a drive gear, a reduction assembly, and an execution assembly. The housing assembly includes a base with a first groove on one side. The execution assembly is movably installed in the first groove. The drive assembly and the drive gear are arranged sequentially along a first direction, with the drive gear mounted at the output end of the drive assembly. The reduction assembly is rotatably mounted on the base and meshes with the drive gear and the execution assembly, and the drive gear, execution assembly, and reduction assembly are arranged sequentially along a second direction. This linear actuator features a laterally positioned reduction assembly, reducing its height and resulting in a compact overall structure and small size, which is advantageous for use in low-height environments or / and in situations with limited structural space. Furthermore, placing the execution assembly on one side of the base facilitates the support of workpieces that are close to the edge, making it more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of drive equipment, and in particular to a linear actuator. Background Technology

[0002] A linear actuator is a device that converts the rotary motion of a drive into linear motion. It typically employs transmission methods such as ball screw drive, synchronous belt drive, or rack and pinion drive to convert the rotary motion of the drive into the linear motion of a slide, thereby driving other components to perform high-precision linear motion.

[0003] In existing linear actuators, the slide table is typically mounted in the center of the base and slidably supported by the base. The top surface of the slide table carries the workpiece, and the workpiece is transported by sliding the slide table along the base. The design of the existing structure has two drawbacks: firstly, the overall height is relatively large, and the miniaturization is insufficient, which limits its use in low-height scenarios or / and in situations with limited structural space, hindering its widespread application; secondly, the centrally positioned slide table is not conducive to carrying workpieces that are close to the edge, further limiting its use. Utility Model Content

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A linear actuator is provided, comprising a housing assembly, a drive assembly, a drive gear, a reduction assembly, and an execution assembly; wherein, the housing assembly includes a base, and a first groove is provided on one side of the base; the drive assembly is mounted on the base; the drive gear is mounted on the output end of the drive assembly, and the drive gear can rotate under the drive of the drive assembly; the reduction assembly is rotatably mounted on the base and meshes with the drive gear, and the reduction assembly can move under the drive of the drive gear; the execution assembly is movably mounted in the first groove and connected to the reduction assembly, and the execution assembly can move linearly under the drive of the reduction assembly; wherein, the drive assembly and the drive gear are arranged sequentially along a first direction, and the execution assembly, the reduction assembly, and the drive gear are arranged sequentially along a second direction, the second direction intersecting the first direction.

[0005] Preferably, the base has a first cavity and a second cavity arranged along the first direction, and the side of the second cavity is connected to the first groove. The drive gear and the reduction assembly are both installed in the second cavity, and the drive assembly is installed in the first cavity. This facilitates the installation of the drive assembly, drive gear, and reduction assembly, and makes the linear actuator more compact, reducing its overall height and making it suitable for use in confined spaces. Furthermore, it improves the support and stability of the linear actuator.

[0006] Preferably, the housing assembly further includes a first cover plate and a second cover plate, the first cover plate being connected to one side of the base and enclosing the first cavity, and the second cover plate being connected to the other side of the base and shielding the second cavity, thereby providing better protection for each component.

[0007] Preferably, the first cavity and the second cavity are separated by a partition, and the output end of the drive assembly passes through the partition and extends into the second cavity; that is, the first cavity and the second cavity are recessed on both sides of the base, so that the drive assembly, drive gear and reduction assembly are respectively housed in the base, thereby reducing the space occupied by each component in the first direction, and thus reducing the overall height of the linear actuator, which is beneficial for use in space-constrained situations.

[0008] Preferably, the partition plate and the second cover plate are provided with opposing first mounting grooves and second mounting grooves, and the two ends of the deceleration assembly are respectively installed in the first mounting groove and the second mounting groove, so that the installation of the deceleration assembly is convenient and stable.

[0009] Preferably, the reduction assembly includes at least a reduction gear, which is rotatably mounted on the base and meshes with the drive gear. The drive gear drives the reduction gear to rotate, thereby driving the actuation assembly to move in a straight line.

[0010] Preferably, the side of the actuation component is provided with a rack structure, which meshes with the reduction gear.

[0011] Preferably, the base body is further provided with a second groove, which is connected to the first groove. The part of the actuator that is connected to the deceleration assembly is disposed in the second groove. The sidewall of the second groove is used to limit the actuator. At the same time, the meshing part of the two can be covered by the second cover plate, thereby playing a role in dust prevention and protection.

[0012] Preferably, the linear actuator further includes a guide component, which is installed in the first groove and extends along a third direction. The actuator is installed on the guide component. The guide component provides guidance to the actuator along the third direction, while improving the support for the actuator and making the movement of the actuator more stable. The third direction intersects with both the second direction and the first direction.

[0013] Preferably, the guide assembly includes a guide rail and a slider, the guide rail is installed in the first groove, and the slider is slidably connected to the guide rail and fixedly connected to the actuation assembly.

[0014] Preferably, the actuator does not protrude from the outer surface of the housing assembly along either the first or the second direction, thereby protecting the actuator and reducing the overall height of the linear actuator, which is beneficial for use in space-constrained situations.

[0015] Compared with the prior art, the linear actuator of this utility model has the following advantages: First, a first groove is provided on one side of the base, and the actuator component is movably installed in the first groove. This allows the object carried by the actuator component to be closer to the edge, which is beneficial for carrying workpieces that are close to the edge and makes it more convenient to use. Second, the drive component is installed on the base and arranged in sequence with the drive gear along the first direction. At the same time, the drive gear, the reduction component, and the actuator component are respectively installed on the base and arranged in sequence along the second direction. That is, the reduction component is arranged laterally and meshes with the drive gear and the actuator component respectively. This reduces the height of the linear actuator and makes the overall structure compact and small in size, which is beneficial for use in low-height scenarios and / or in situations with limited structural space. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the linear actuator of this utility model.

[0017] Figure 2 yes Figure 1 A structural diagram from another angle.

[0018] Figure 3 yes Figure 1 A schematic diagram of the structure after removing the first and second cover plates.

[0019] Figure 4 yes Figure 2 A schematic diagram of the structure for removing the second cover plate.

[0020] Figure 5 yes Figure 1 The exploded diagram.

[0021] Figure 6 yes Figure 1 A sectional view. Detailed Implementation

[0022] Embodiments of the present invention will now be described with reference to the accompanying drawings, in which similar element reference numerals represent similar elements. It should be noted that the directional descriptions involved in the present invention, such as up, down, left, right, front, and back, indicating directions or positional relationships, are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the technical solutions of this application or / and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first," "second," etc., described are only used to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0023] First combine Figures 1-6 As shown, in one embodiment of this utility model, the provided linear actuator 100 includes a housing assembly 110, a drive assembly 120, a drive gear 130, a reduction assembly 140, and an execution assembly 150. The housing assembly 110 includes a base 111, with a first groove 1111 on one side of the base 111, extending through both ends of the base 111. The execution assembly 150 is movably installed within the first groove 1111. The drive assembly 120 is mounted on the base 111, and the drive gear 130 is mounted on the output end of the drive assembly 120. The drive assembly 120 and the drive gear 130 are arranged sequentially along a first direction (X direction), and the drive gear 130 can rotate under the drive of the drive assembly 120. The reduction assembly 140 is rotatably mounted on the base 111 and meshes with the drive gear 130 and the execution assembly 150, respectively. The drive gear 130, the reduction assembly 140, and the execution assembly 150 are arranged sequentially along a second direction (Y direction). The reduction gear 140 can move under the drive of the drive gear 130, and then the reduction gear 140 drives the actuator 150 to move linearly. This structural arrangement in this application makes the linear actuator 100 more stable, smaller in size, and smaller in overall dimensions, thus making it advantageous for use in situations with limited structural space and improving motion accuracy.

[0024] Combination Figure 1 , Figure 3As shown, in this invention, the first groove 1111 extends along a third direction (Z direction), and the first direction (X direction), the second direction (Y direction), and the third direction (Z direction) intersect each other. More preferably, the first direction (X direction), the second direction (Y direction), and the third direction (Z direction) are perpendicular to each other, thus forming a three-dimensional space; wherein, the first direction (X direction) is the height direction of the seat 111, the second direction (Y direction) is the width direction of the seat 111, and the third direction (Z direction) is the length direction of the seat 111. Of course, the aforementioned three directions are not limited to the length, width, and height directions of the seat 111, and other directions are also feasible. Moreover, the first direction (X direction), the second direction (Y direction), and the third direction (Z direction) are not limited to being mutually perpendicular, and other intersecting directions are also feasible according to the needs of use.

[0025] The following is combined Figure 1 , Figure 3 , Figure 6 As shown, in one embodiment of this utility model, after the actuating component 150 is installed in the first groove 1111, it does not protrude from the outer surface of the housing component 110 in either the first direction (X direction) or the second direction (Y direction). Specifically, the upper surface of the actuating component 150 is located below the upper surface of the housing component 110, and its side is located within the side of the base 111 in the width direction. This arrangement not only protects the actuating component 150 but also makes the outer dimensions of the housing component 110 the same as the outer dimensions of the linear actuator 100, reducing the overall size of the linear actuator 100. This is beneficial for use in confined spaces, especially in scenarios with low height.

[0026] Combined again Figures 1-6 As shown, in one embodiment of this utility model, the seat 111 is further provided with a second groove 1112, which also extends along a third direction (Z direction) and is connected to the first groove 1111. More specifically, the length of the second groove 1112 is slightly less than the length of the first groove 1111, and both ends of the second groove 1112 in the length direction have sidewalls 1112a. See [reference needed] Figure 3 , Figure 5 As shown. After the actuation component 150 is installed in the first groove 1111, the portion of the actuation component 150 that connects to the reduction component 140 is located in the second groove 1112, see reference. Figure 3 As shown. During the linear movement of the actuator 150, the sidewalls 1112a at both ends of the second groove 1112 can limit the actuator 150.

[0027] The following is combined Figures 3-6As shown, in one embodiment of this utility model, the base 111 further includes a first cavity 1113 and a second cavity 1114 arranged along a first direction (X direction). The first cavity 1113 and the second cavity 1114 are separated by a partition 1115, and the side of the second cavity 1114 is connected to the second groove 1112. The drive assembly 120 is installed in the first cavity 1113, and its output end passes through the partition 1115 and extends into the second cavity 1114. The drive gear 130 and the reduction assembly 140 are both installed in the second cavity 1114, thereby enabling the reduction assembly 140 to mesh with the actuation assembly 150. The structure of the base 111 allows the drive assembly 120, drive gear 130 and reduction assembly 140 to be housed within it, making the linear actuator 100 compact and reducing its overall volume and size, which is beneficial for use in confined spaces. On the other hand, it also improves the support and stability of the linear actuator 100.

[0028] Continue to combine Figures 3-6 As shown, in one specific embodiment, a first cavity 1113 is formed by an inward recess from the bottom surface of the seat 111, and a second cavity 1114 is formed by an inward recess from the top surface of the seat 111. Furthermore, the shape and inner diameter of the first cavity 1113 preferably correspond to the outer shape and size of the drive assembly 120. Thus, when the drive assembly 120 is installed, the drive assembly 120 is inserted into the first cavity 1113 from the bottom surface of the seat 111, and the drive assembly 120 is fixed to the partition 1115. The position of the drive assembly 120 is restricted by the inner wall of the first cavity 1113. (See Figure 1113 for details.) Figure 4 As shown, this makes the installation of the drive assembly 120 more stable. When installing the drive gear 130 and the reduction assembly 140, they can be directly installed into the second cavity 1114 from the top of the base 111. The method of installing the drive assembly 120, drive gear 130, and reduction assembly 140 from both sides of the base 111 makes the installation of each component more convenient; moreover, since each component is housed within the base 111, the overall volume and size of the linear actuator 100 are reduced.

[0029] Combined again Figures 1-6 As shown, in one embodiment of this utility model, the housing assembly 110 further includes a first cover plate 112 and a second cover plate 113. The first cover plate 112 is connected to the bottom surface of the base 111 and closes the first cavity 1113, thereby enclosing the drive assembly 120 within the base 111; the second cover plate 113 is connected to the top surface of the base 111 and covers the second cavity 1114 and the second groove 1112, thereby blocking the drive gear 130, the reduction assembly 140, and the side of the actuator 150 that meshes with the reduction assembly 140. The arrangement of the first cover plate 112 and the second cover plate 113 provides better protection for each component.

[0030] The following is combined Figures 5-6 As shown, in one embodiment of this utility model, the partition 1115 and the second cover plate 113 are provided with opposing first mounting grooves 1115a and second mounting grooves 113a. Specifically, the partition 1115 is provided with a first mounting groove 1115a, and the second cover plate 113 is provided with a second mounting groove 113a. The two ends of the reduction assembly 140 are rotatably mounted in the first mounting groove 1115a and the second mounting groove 113a, respectively, making the installation of the reduction assembly 140 convenient and stable. Of course, other methods can also be used to install the reduction assembly 140.

[0031] In one embodiment of this utility model, the reduction assembly 140 includes at least a reduction gear 141. Both ends of the reduction gear 141 are rotatably mounted in the first mounting groove 1115a and the second mounting groove 113a, making the installation of the reduction gear 141 more convenient and the support more stable. The reduction gear 141 meshes with both the drive gear 130 and the actuation assembly 150. The drive gear 130 drives the reduction gear 141 to rotate, thereby driving the actuation assembly 150 to move linearly. The installation method of the reduction gear 141 is a conventional method in the art, such as mounting it in the first mounting groove 1115a and the second mounting groove 113a via bearings, etc., and is not specifically limited in this application.

[0032] In this embodiment, a rack structure 151 is provided on the side of the execution component 150 in the width direction, and the rack structure 151 extends along the length direction of the execution component 150. After the execution component 150 is installed, the rack structure 151 is disposed in the second groove 1112 and meshes with the reduction gear 141. Thus, the transmission connection between the execution component 150 and the drive gear 130 is realized through the meshing of the reduction gear 141 and the rack structure 151. In addition, after the aforementioned second cover plate 113 is installed, the second cover plate 113 covers the rack structure 151, thereby playing a role in dust prevention and protection. Moreover, during the linear movement of the execution component 150, the side wall 1112a of the second groove 1112 can limit the execution component 150.

[0033] Combined again Figures 1-6 As shown, in one embodiment of the present invention, the linear actuator 100 further includes a guide component 160, which is installed in the first groove 1111 and extends along the third direction (Z direction). The actuator 150 is installed on the guide component 160. The guide component 160 is used to provide guidance for the actuator 150 along the third direction, while improving the support for the actuator 150 and making the movement of the actuator 150 more stable.

[0034] In one specific embodiment, the guide assembly 160 includes a guide rail 161 and a slider 162. The guide rail 161 is fixedly installed in the first groove 1111 and extends along the third direction (Z direction). The slider 162 is slidably connected to the guide rail 161 and fixedly connected to the execution assembly 150. The guide rail 161 and slider 162 support the guide assembly 160 and guide its movement, while providing more stable support for the execution assembly 150. During the movement of the execution assembly 150, the slider 162 slides along the guide rail 161 to achieve guidance, and the driving force required to drive the execution assembly 150 to move is also reduced. Understandably, other guide structures can also be used to guide the execution assembly 150.

[0035] Combined again Figures 1-6 As shown, when the linear actuator 100 of this invention is working, the drive assembly 120 runs and drives the drive gear 130 to rotate. The drive gear 130 drives the reduction gear 141 of the reduction assembly 140 to rotate. The reduction gear 141 interacts with the meshing rack structure 151, thereby driving the actuator 150 to reciprocate along the third direction (Z direction). During the movement of the actuator 150, the slider 162 fixed to it moves. The slider 162 slides along the guide rail 161 to guide the movement of the actuator 150 and provide stable support for the actuator 150. At the same time, the two ends of the second groove 1112 in the length direction have sidewalls 1112a that can limit the movement of the actuator 150 to prevent the actuator 150 from moving excessively, thereby improving the accuracy of the linear motion of the actuator 150.

[0036] In summary, the linear actuator 100 of this utility model has the following features: First, a first groove 1111 is provided on one side of the base 111, and the actuator 150 is movably installed in the first groove 1111. This allows the object carried by the actuator 150 to be closer to the edge, which is beneficial for carrying workpieces that are close to the edge and makes it more convenient to use. Second, the drive assembly 120 is installed on the base 111 and arranged sequentially with the drive gear 130 along the first direction (X direction). At the same time, the drive gear 130, the reduction assembly 140, and the actuator 150 are respectively installed on the base 111 and arranged sequentially along the second direction (Y direction). That is, the reduction assembly 140 is arranged laterally and meshes with the drive gear 130 and the actuator 150 respectively. This reduces the height of the linear actuator 100, and the overall structure is compact and small in size, which is beneficial for use in low-height scenarios and / or in situations with limited structural space.

[0037] The structures of other parts of the linear actuator 100 involved in this utility model are all conventional structures well known to those skilled in the art, and therefore will not be described in detail.

[0038] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A linear actuator, characterized in that, include: A housing assembly includes a base, one side of which has a first groove; The drive assembly is mounted on the base. A drive gear is installed at the output end of the drive assembly, and the drive gear can rotate under the drive of the drive assembly; A reduction gear assembly is rotatably mounted on the base and meshes with the drive gear, and the reduction gear assembly can move under the drive of the drive gear; An actuating component is movably installed in the first groove and connected to the deceleration component. The actuating component can move linearly under the drive of the deceleration component. The driving component and the driving gear are arranged sequentially along a first direction, and the actuating component, the deceleration component, and the driving gear are arranged sequentially along a second direction, which intersects with the first direction.

2. The linear actuator as described in claim 1, characterized in that, The seat body has a first cavity and a second cavity arranged along the first direction, and the side of the second cavity is connected to the first groove. The drive gear and the reduction assembly are both installed in the second cavity, and the drive assembly is installed in the first cavity.

3. The linear actuator as described in claim 2, characterized in that, The housing assembly further includes a first cover plate and a second cover plate, the first cover plate being connected to one side of the seat and closing the first cavity, and the second cover plate being connected to the other side of the seat and shielding the second cavity.

4. The linear actuator as described in claim 3, characterized in that, The first cavity and the second cavity are separated by a partition, and the output end of the drive assembly passes through the partition and extends into the second cavity; or / and, The partition and the second cover are provided with a first mounting groove and a second mounting groove, respectively, and the two ends of the deceleration assembly are respectively installed in the first mounting groove and the second mounting groove.

5. The linear actuator as described in claim 1, characterized in that, The deceleration assembly includes at least a reduction gear, which is rotatably mounted on the base and meshes with the drive gear. The drive gear drives the reduction gear to rotate, thereby driving the actuation assembly to move in a straight line.

6. The linear actuator as described in claim 5, characterized in that, The side of the actuation component is provided with a rack structure, which meshes with the reduction gear.

7. The linear actuator as described in claim 1, characterized in that, The base is also provided with a second groove, which is connected to the first groove. The part of the actuator that is connected to the deceleration assembly is located in the second groove, and the sidewall of the second groove is used to limit the actuator.

8. The linear actuator as described in claim 1, characterized in that, It also includes a guide component, which is installed in the first groove and extends along a third direction, and the execution component is installed on the guide component. The guide component is used to provide guidance to the execution component along the third direction; wherein the third direction intersects with both the second direction and the first direction.

9. The linear actuator as described in claim 8, characterized in that, The guiding component includes a guide rail and a slider. The guide rail is installed in the first groove, and the slider is slidably connected to the guide rail and fixedly connected to the actuating component.

10. The linear actuator as claimed in claim 1, characterized in that, The execution component does not protrude from the outer surface of the housing component along either the first direction or the second direction.

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