Actuator device
By introducing a pressure relief unit of a one-way diaphragm and a polymer film material into the actuator device, the internal pressure is regulated, and the problem of poor waterproofness between relative moving members is solved, and the optimal waterproof and dustproof effect is achieved, achieving IP68 Level of protection capability.
Patent Information
- Application Number
- CN202310965741.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-29
- Filing Date
- 2023-08-02
- Publication Date
- 2024-12-31
AI Technical Summary
It is difficult for the existing actuator devices to achieve good waterproofness between relatively moving components, especially when the screw drives and the sliding table is displaced, resulting in the inability to truly achieve airtightness of the shell body, affecting the waterproof and dustproof effect.
An actuator device including a base unit, a slide unit, a pressure relief unit and a drive unit is designed. The one-way diaphragm and polymer film materials are used to generate a one-way exhaust between the slide unit and the base unit to regulate the internal control. Pressure, the traction airflow is discharged through the pressure relief unit, preventing water and dust from entering.
Achieves the optimal waterproof effect between relative moving components, reaching the IP68-grade waterproof and dustproof standard, no additional protective cover or shell is required, and can maintain working time in fresh water with a water depth of 1.5m for 30 minutes and prevent dust. Enter.
Smart Images
Figure CN119231819A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a linear actuation device, and in particular to an actuator device. Background Art
[0002] Patent case JP6025625 discloses that a dehumidification unit is added to an actuator device to reduce internal humidity.
[0003] In addition, the patent case of JP5968732 discloses that the actuator is easy to assemble and disassemble, and can improve the dustproof and waterproof performance. A front cover seal is sandwiched between a housing body and a front bracket, and a rear cover seal is sandwiched between the housing body and a rear cover.
[0004] Therefore, foreign matter can be reliably prevented from entering, and water droplets and dust will not enter a housing at both end surfaces of the outer body, which can improve the dustproof and waterproof performance of the actuator. Since the front bracket is provided with a first rod seal and a second rod seal, the first rod seal is installed on the outside of the housing, and the second rod seal is installed on the inside of the housing. Therefore, even if foreign matter, water droplets, etc. enter from the gap between the first rod seal and the opposite rod, the second rod seal can prevent foreign matter, water droplets, etc. from entering the housing. In addition, a soft wiper is provided on the rear end side of the inner circumferential surface of the first rod seal, and the first rod seal is wiped by the soft wiper. Foreign matter, water droplets, etc. can be captured between the first rod seal and the second rod seal. The first rod seal and the second rod seal can prevent foreign matter such as grease and wear powder generated inside the housing from flowing out from the inside of the housing to the outside.
[0005] However, the above patent case does not design for the waterproofness between relatively moving components. For example, in the patent case JP5968732, when a screw drives and guides a slide to move, airflow will be generated inside the shell body, which will cause the shell body to be not truly airtight and fail to produce a better waterproof and dustproof effect. Summary of the invention
[0006] An object of the present invention is to provide an actuator device capable of improving the waterproofness between relatively moving members.
[0007] The actuator device of the present invention comprises a base unit, a slide unit, a pressure relief unit and a driving unit. The base unit extends along the long axis direction and comprises a base body defining a housing space, a first end seat group connected to the base body, and a second end seat group opposite to the first end seat group and connected to the base body along the long axis direction, wherein the first end seat group has an air vent connected to the housing space from the outside, a first oil injection hole, and a first oil injection nozzle installed on the first oil injection hole and extending to the housing space. The slide unit can be slidably installed on the base unit along the long axis direction, and comprises a slide, a nut seat connected to the slide, and a connection hole corresponding to the first oil injection nozzle, wherein the connection hole is connected between the slide and the base unit. The pressure relief unit is installed on the air vent of the first end seat group, and can generate one-way air discharge from the housing space to the outside of the base unit. The driving unit is installed on the base unit, and can drive the slide unit to move relative to the base unit along the long axis direction.
[0008] In the actuator device of the present invention, the first end seat group of the base unit also has an oil filling seat fixed to the base body, and an air release seat fixed to a side of the oil filling seat opposite to the base body, the air vent has a first hole section arranged on the air release seat, and a second hole section arranged on the oil filling seat, and the first oil filling hole and the first oil filling nozzle are arranged on the oil filling seat.
[0009] The actuator device of the present invention, the driving unit includes a driving member opposite to the oil filling seat and arranged on one side of the air release seat, a lead screw driven by the driving member and screwed on the nut seat, and an outer sleeve sleeved on the outside of the lead screw, the outer sleeve having an inner end connected to the slide, an outer end opposite to the inner end and extending to the outside of the second end seat group, and an inner hole extending from the inner end to the outer end, the lead screw having a connecting section penetrating the first hole section arranged in the air release seat and the second hole section arranged in the oil filling seat, an end section opposite to the connecting section, and a sliding ring installed on the end section and capable of sliding along the inner hole.
[0010] In the actuator device of the present invention, the base unit further comprises a second oil filling hole installed on the second end seat group, and the second oil filling hole supplies oil between the outer sleeve and the second end seat group.
[0011] In the actuator device of the present invention, the second end seat group of the base unit has a main seat body and an end cover installed on the main seat body, and the main seat body and the end cover jointly define an oil storage chamber, and the oil storage chamber is adjacent to the outer sleeve.
[0012] The actuator device of the present invention, the slide unit also includes two ball circulators installed on the slide, two ball groups installed in the ball circulators, and an oil guide seat connected to the slide, the connecting hole is arranged on the oil guide seat, and the oil guide seat also has an oil guide groove connecting the connecting hole and the ball circulator.
[0013] In the actuator device of the present invention, the pressure relief unit has a valve body and a one-way diaphragm installed inside the valve body, and the one-way diaphragm allows one-way gas release from the accommodating space toward the outside of the base unit.
[0014] In the actuator device of the present invention, the one-way diaphragm of the pressure relief unit is made of a polymer film material.
[0015] In the actuator device of the present invention, the one-way diaphragm of the pressure relief unit is made of polytetrafluoroethylene.
[0016] The beneficial effects of the present invention are: when the driving unit drives the slide unit to approach the first end seat group, the first oil filling hole and the first oil filling nozzle of the first end seat group can be used to supply oil to the slide unit, and the traction airflow generated when the slide unit is displaced relative to the base unit will be discharged outward through the pressure relief unit, so that the internal pressure state of the base unit can be adjusted to achieve better waterproof and dustproof purposes. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a three-dimensional composite diagram of an embodiment of an actuator device of the present invention;
[0018] Figure 2 is a perspective exploded view of this embodiment;
[0019] Figure 3 is a three-dimensional diagram of an oil guide seat of the embodiment;
[0020] Figure 4 is a three-dimensional diagram of the oil guide seat of the embodiment from another perspective;
[0021] Figure 5 is a combined cross-sectional view of this embodiment;
[0022] Figure 6 yes Figure 5 A partial enlarged schematic diagram of
[0023] Figure 7 yes Figure 5 Another partial enlarged schematic diagram of;
[0024] Figure 8 is along Figure 6 A sectional view taken along the line VIII-VIII in FIG.
[0025] Fig. 9 is along Figure 6 A sectional view taken along the line IX-IX in FIG.
[0026] Fig.10 is along Figure 7 A sectional view taken along the straight line X-X in FIG. DETAILED DESCRIPTION
[0027] See also Figure 1 and Figure 2 An embodiment of the actuator device of the present invention includes a base unit 10, a slide unit 20, a pressure relief unit 30 and a driving unit 40.
[0028] Related References Figure 5 , Figure 6 , Figure 7 and Fig. 9 The base unit 10 extends along a long axis direction X and includes a base body 11 defining a receiving space 111, a first end seat group 12 connected to the base body 11, and a second end seat group 16 connected to the base body 11 opposite to the first end seat group 12 along the long axis direction X. The first end seat group 12 has an oil filling seat 13 fixed to the base body 11, an air release seat 14 fixed to one side of the oil filling seat 13 opposite to the base body 11, and a vent hole 15 connected to the receiving space 111 from the outside. The oil filling seat 13 has a first oil filling hole 131 connected to the receiving space 111 from the outside, and a first oil filling nozzle 132 installed on the first oil filling hole 131 and extending to the receiving space 111. The vent hole 15 has a first hole section 151 arranged on the air release seat 14, and a second hole section 152 arranged on the oil filling seat 13.
[0029] Related References Figure 7 and Fig.10 The second end seat assembly 16 has a main seat body 161 and an end cover 162 mounted on the main seat body 161. The main seat body 161 and the end cover 162 together define an oil storage chamber 163. The main seat body 161 has a second oil injection hole 164 connected to the oil storage chamber 163 from the outside.
[0030] Related References Figure 6 and Figure 8 The slide unit 20 is mounted on the base unit 10 to slide along the long axis X, and includes a slide 21, a nut seat 22 connected to the slide 21, two ball circulators 23 mounted on the slide 21, two ball groups 24 mounted in the ball circulators 23, and an oil guide seat 25 connected to the slide 21. The ball circulator 23 is located between the slide 21 and the base unit 10. Figure 3 and Figure 4 The oil guide seat 25 has a connection hole 251 corresponding to the first oil injection nozzle 132 and two oil guide grooves 252 connecting the connection hole 251 and the ball circulator 23 .
[0031] The pressure relief unit 30 is installed in the vent hole 15 of the first end seat group 12, and can generate one-way air leakage from the accommodating space 111 to the outside of the base unit 10. The pressure relief unit 30 has a valve body 31 (see Fig. 9 ), and a one-way diaphragm 32 installed inside the valve body 31, the one-way diaphragm 32 allows one-way air leakage from the accommodating space 111 to the outside of the base unit 10, and the one-way diaphragm 32 is a polymer film material, for example, polytetrafluoroethylene.
[0032] The driving unit 40 is installed on the base unit 10, and can drive the slide unit 20 to move relative to the base unit 10 along the long axis direction X. The driving unit 40 includes a driving member 41 opposite to the oil filling seat 13 and arranged on one side of the air release seat 14, a lead screw 42 driven by the driving member 41 and screwed on the nut seat 22, and an outer sleeve 43 sleeved on the outside of the lead screw 42. The lead screw 42 has a connecting section 421 that penetrates the first hole section 151 arranged on the air release seat 14 and the second hole section 152 arranged on the oil filling seat 13, an end section 422 opposite to the connecting section 421, and a sliding ring 423 installed on the end section 422. The outer sleeve 43 has an inner end 431 connected to the slide 21, an outer end 432 opposite to the inner end 431 and extending outside the second end seat assembly 16, an outer peripheral surface 433 extending from the inner end 431 to the outer end 432, and an inner peripheral surface 435 opposite to the outer peripheral surface 433 and capable of defining an inner hole 434. The oil storage chamber 163 is adjacent to the outer peripheral surface 433 of the outer sleeve 43, and the second oil filling hole 164 supplies oil between the outer sleeve 43 and the second end seat assembly 16.
[0033] In order to further understand the effects of the various components of the present invention, the technical means used, and the expected effects to be achieved, the following description will be given. It is believed that this will provide a deeper and more specific understanding of the present invention.
[0034] like Figure 1 , Figure 5 , Figure 6 and Figure 7As shown, when the actuator device of the present invention is assembled as a whole, the slide unit 20 is sleeved on the base unit 10, and the nut seat 22 is screwed on the lead screw 42 of the drive unit 40. When the drive member 41 is started, the lead screw 42 can be rotated, and by utilizing the screwing relationship between the lead screw 42 and the nut seat 22, the rotation of the lead screw 42 can drive the slide unit 20 to move relative to the base unit 10 along the long axis X, and achieve the expected processing and conveying operation.
[0035] When the slide unit 20 is displaced relative to the base unit 10, the outer sleeve 43 is linked to the slide 21 and also moves relative to the second end seat group 16 and the lead screw 42. When the slide unit 20 is driven and slides to one end of the base unit 10 (close to one end of the first end seat group 12), the oil guide seat 25 is aligned and sleeved with the first oiling nozzle 132. At this time, the slide unit 20 is located in an oiling position (return position), and an oiling gun (not shown) can be aligned with the first oiling hole 131 and oil can be injected, and oil can be injected through the first oiling nozzle 132. After the oil is injected, the oil guide groove 252 will be used to supply oil to the ball circulator 23. A better moving lubrication effect is achieved between the slide 21 and the base unit 10.
[0036] The oil gun (not shown) is also used to align with the second oil injection hole 164 and inject oil, which can be directed to the oil storage chamber 163. The oil storage chamber 163 is adjacent to the outer peripheral surface 433 of the outer sleeve 43, so that oil can be supplied between the outer sleeve 43 and the second end seat assembly 16. A better moving lubrication effect is achieved between the outer sleeve 43 and the base unit 10.
[0037] When the slide unit 20 is displaced relative to the base unit 10, a traction airflow is generated inside the accommodating space 111, and the pressure state of the accommodating space 111 can be adjusted by the pressure relief unit 30. The pressure relief unit 30 is configured on the valve body 31 through a polymer film material. When the traction airflow generates positive and negative pressures, the airflow can be guided to be discharged smoothly from the accommodating space 111 to the outside of the base unit 10, but external water or dust can be prevented from entering the accommodating space 111 through the pressure relief unit 30. And by utilizing the function of airflow derivation, the accommodating space 111 can be prevented from being affected by water and dust, thereby reducing the waterproof function.
[0038] Therefore, the present invention utilizes the overall configuration to achieve IP68 waterproof and dustproof effects (IP is the abbreviation of Ingress Protection. The waterproof and dustproof level is an international standard that defines the level of protection of the device against foreign body intrusion. No additional protective cover or protective shell is required. Under the IP68 level, the device can be immersed in fresh water at a depth of 1.5m for up to 30 minutes and can prevent dust from entering).
[0039] In summary, the actuator device of the present invention has a simple overall structure, is easy to manufacture and assemble, and can achieve a better waterproof level, thereby truly achieving the purpose of the present invention.
Claims
1. An actuator device, comprising a base unit, a slide unit, a pressure relief unit and a drive unit, characterized in that: The base unit extends along the long axis and includes a base body defining an accommodating space, a first end seat group connected to the base body, and a second end seat group opposite to the first end seat group along the long axis and connected to the base body, the first end seat group having a vent hole connected to the accommodating space from the outside, a first oil injection hole, and a first oil injection nozzle installed at the first oil injection hole and extending to the accommodating space; The slide unit is slidably mounted on the base unit along the long axis, and includes a slide table, a nut seat connected to the slide table, and a connection hole corresponding to the first oiling nozzle, wherein the connection hole is connected between the slide table and the base unit; The pressure relief unit is installed in the vent hole of the first end seat group and can generate one-way air discharge from the accommodating space to the outside of the base unit; The driving unit is installed on the base unit, and can drive the slide unit to move relative to the base unit along the long axis.
2. The actuator device according to claim 1, characterized in that: The first end seat group of the base unit also has an oil filling seat fixed to the base body, and an air release seat fixed to the side of the oil filling seat opposite to the base body, the air vent has a first hole section arranged on the air release seat, and a second hole section arranged on the oil filling seat, the first oil filling hole and the first oil filling nozzle are arranged on the oil filling seat.
3. The actuator device according to claim 2, characterized in that: The driving unit includes a driving member opposite to the oil filling seat and arranged on one side of the air release seat, a lead screw driven by the driving member and screwed on the nut seat, and an outer sleeve sleeved on the outside of the lead screw, the outer sleeve having an inner end connected to the slide, an outer end opposite to the inner end and extending outside the second end seat group, and an inner hole extending from the inner end to the outer end, the lead screw having a connecting section penetrating the first hole section arranged on the air release seat and the second hole section arranged on the oil filling seat, an end section opposite to the connecting section, and a sliding ring installed on the end section and capable of sliding along the inner hole.
4. The actuator device according to claim 3, characterized in that: The base unit also includes a second oil filling hole installed on the second end seat group, and the second oil filling hole supplies oil between the outer sleeve and the second end seat group.
5. The actuator device according to claim 4, characterized in that: The second end seat group of the base unit has a main seat body and an end cover installed on the main seat body. The main seat body and the end cover jointly define an oil storage chamber, and the oil storage chamber is adjacent to the outer sleeve.
6. The actuator device according to claim 1, characterized in that: The slide unit also includes two ball circulators installed on the slide, two ball groups installed in the ball circulators, and an oil guide seat connected to the slide. The connecting hole is arranged on the oil guide seat, and the oil guide seat also has an oil guide groove connecting the connecting hole and the ball circulator.
7. The actuator device according to claim 1, characterized in that: The pressure relief unit comprises a valve body and a one-way diaphragm installed inside the valve body, wherein the one-way diaphragm allows one-way gas discharge from the accommodating space toward the outside of the base unit.
8. The actuator device according to claim 7, characterized in that: The one-way diaphragm of the pressure relief unit is made of polymer film material.
9. The actuator device according to claim 7, characterized in that: The one-way diaphragm of the pressure relief unit is made of polytetrafluoroethylene.