Power device
By employing a sliding connection method that combines rolling elements and grooves in the power unit, the problems of jamming and swaying in traditional power units are solved, resulting in higher operational stability and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional power units are prone to jamming or swaying during operation, which affects the stability of operation.
The sliding connection between the sliding component and the housing is achieved through the cooperation of rolling elements and sliding grooves, which reduces frictional resistance, ensures balanced force on the sliding component, and avoids swaying and jamming.
It improves the smoothness of the power unit's operation, reduces wear, extends service life, and improves the fitting accuracy between the sliding parts and the groove.
Smart Images
Figure CN224111008U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of automation technology, in particular to a power device. BACKGROUND
[0002] The power device has a very wide application in the field of automation technology. The power device can drive an execution member such as a mechanical hand, so that the mechanical hand can skillfully grasp an object. However, for the traditional power device, the phenomenon of jamming or swinging is prone to occur during the operation, thereby affecting the stability of the operation of the power device. SUMMARY
[0003] One of the technical problems solved by the present application is how to improve the stability of the operation of the power device.
[0004] A power device comprises:
[0005] a housing;
[0006] a sliding member in sliding connection with the housing;
[0007] a rolling member, one of the housing and the sliding member is provided with a sliding groove, and the other is provided with the rolling member in rolling manner, the rolling member being in sliding cooperation with the sliding groove; and
[0008] a driving mechanism arranged on the housing and driving the sliding member to slide.
[0009] In one of the embodiments, the number of the sliding grooves is plural, the plural sliding grooves are arranged in the circumferential direction of the housing, and the rolling members are arranged in plural rows in the axial direction of the housing, each row being in sliding cooperation with a different sliding groove.
[0010] In one of the embodiments, the number of the rolling members included in each row is equal or unequal.
[0011] In one of the embodiments, the housing is provided with a guide hole, and the sliding member is inserted in the guide hole to be in sliding cooperation with the guide hole.
[0012] In one of the embodiments, the rolling member is arranged on the sliding member, and the sliding groove is arranged on the inner side wall surface of the guide hole.
[0013] In one of the embodiments, a rolling space is recessed on the outer side surface of the rolling member, the rolling member is arranged in the rolling space in rolling manner, and the rolling member comprises a cooperating part protruding out of the rolling space and cooperating with the sliding groove.
[0014] In one of the embodiments, the rolling member is spherical or cylindrical.
[0015] In one of the embodiments, the driving mechanism comprises a screw rod, the screw rod is rotationally connected with the housing, the screw rod is inserted into the sliding member and threadedly connected with the sliding member, and the rotation of the screw rod is converted into the sliding motion of the sliding member.
[0016] In one of the embodiments, the outer side surface of the sliding member comprises a first circular arc surface and a first plane, the inner side wall surface of the guide hole comprises a second circular arc surface and a second plane, the first circular arc surface is projected on the second circular arc surface, the first plane is projected on the second plane, and one of the first plane and the second plane is provided with the sliding groove and the other is provided with the rolling member.
[0017] In one of the embodiments, the guide hole comprises a first hole and a second hole, the second hole is recessed on the top wall surface of the first hole, and the non-recessed part of the top wall surface of the first hole forms a step surface surrounding the second hole; the sliding member comprises a first sliding part and a second sliding part, the cross section of the first sliding part is larger than that of the second sliding part, the end of the first sliding part is provided with a limiting surface surrounding the second sliding part, the first sliding part is slidingly matched with the first hole, the second sliding part is slidingly matched with the second hole, the first sliding part can abut against the bottom wall surface of the first hole away from the second sliding part, and the limiting surface can abut against the step surface.
[0018] One of the technical effects of one of the embodiments is that, since the sliding member is slidingly connected with the housing through the rolling member matched with the sliding groove, the rolling member will roll relative to the housing and the sliding member during the linear sliding of the sliding member relative to the housing, so that the rolling friction is formed between the sliding member and the housing, and thus the frictional resistance during the sliding of the sliding member is reduced. Since the frictional resistance is reduced, the force acting on the sliding member is more balanced, the swinging of the sliding member during the sliding is avoided, and the sticking phenomenon is also avoided, so that the movement of the sliding member is more stable, and thus the stability of the power device is improved. Since the frictional resistance is reduced, the abrasion of the rolling member caused by the relative movement between the sliding member and the housing is greatly reduced, so that the matching precision between the rolling member and the sliding groove is improved, the swinging or sticking of the sliding member during the movement is also avoided, and the stability of the sliding member and the entire power device is further improved. It can be understood that, in the case of reduced abrasion, the service life of the entire power device can be prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The perspective structural schematic diagram of the power device provided by one of the embodiments.
[0020] Figure 2 The perspective structural schematic diagram of the power device provided by one of the embodiments. Figure 1A three-dimensional sectional view of the power unit shown.
[0021] Figure 3 for Figure 1 A partial exploded view of the power unit shown.
[0022] Figure 4 for Figure 1 A schematic diagram of a partial cross-sectional structure of the power unit shown.
[0023] Figure 5 for Figure 1 A partial planar structural schematic diagram of the power unit shown.
[0024] Reference numerals: power unit 10, housing 100, slide groove 110, guide hole 120, first hole 121, second hole 122, stepped surface 123, second arc surface 124, second plane 125, sliding member 200, rolling space 210, first arc surface 220, first plane 230, first sliding part 240, limiting surface 241, second sliding part 250, rolling member 300, mating part 310, drive mechanism 400, lead screw 410. Detailed Implementation
[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0026] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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.
[0027] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or implicating the number of indicated technical features. Thus, a feature defined with "first" or "second" can include at least one of the features explicitly or implicitly. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.
[0028] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0029] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.
[0030] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.
[0031] Referring to Figure 1 , Figure 2 and Figure 3The power device 10 provided in an embodiment of the present application comprises a housing 100, a sliding member 200, a rolling member 300 and a driving mechanism 400. The sliding member 200 is in sliding connection with the housing 100, so that the sliding member 200 can make reciprocating linear motion along the axial direction of the housing 100. One of the housing 100 and the sliding member 200 is provided with a sliding groove 110, and the other is provided with the rolling member 300 in rolling manner, and the rolling member 300 is in sliding cooperation with the sliding groove 110. For example, the sliding groove 110 can be formed on the housing 100, and the rolling member 300 is arranged on the sliding member 200; or the sliding groove 110 can be formed on the sliding member 200, and the rolling member 300 is arranged on the housing 100. The driving mechanism 400 is arranged on the housing 100, and the driving mechanism 400 provides power for the motion of the sliding member 200, so that the driving mechanism 400 drives the sliding member 200 to make reciprocating linear motion relative to the housing 100.
[0032] If the sliding member 200 is directly in sliding cooperation with the sliding groove 110 to realize the sliding connection with the housing 100, the sliding friction between the sliding member 200 and the housing 100 is formed, which causes large frictional resistance due to the sliding friction. Due to the increase of the frictional resistance, the force acting on the sliding member 200 is unbalanced, which causes the sliding member 200 to swing in the sliding process, and even causes the jamming phenomenon, so that the motion of the sliding member 200 is unstable, and the stability of the power device 10 is also affected. It can be understood that due to the increase of the frictional resistance, the sliding member 200 and the sliding groove 110 are worn during the long-time relative motion, so that the cooperation precision between the sliding member 200 and the sliding groove 110 is affected, and the motion of the sliding member 200 is swung or jammed due to the decrease of the cooperation precision, which also affects the stability of the sliding member 200 and the power device 10. After the wear reaches a certain degree, the sliding member 200 and the power device 10 are scrapped, so that the service life of the power device 10 is reduced.
[0033] Referring to Figure 2 , Figure 3 and Figure 4For the power device 10 in the above embodiment, in view of the sliding connection of the sliding member 200 with the housing 100 in a manner that the sliding member 200 cooperates with the sliding groove 110 through the rolling member 300, during the linear sliding of the sliding member 200 relative to the housing 100, the rolling member 300 will generate rolling relative to the housing 100 and the sliding member 200, so that rolling friction is formed between the sliding member 200 and the housing 100, thus reducing the frictional resistance during the sliding of the sliding member 200. In view of the reduction of the frictional resistance, the force acting on the sliding member 200 will be more balanced, avoiding the swinging of the sliding member 200 during the sliding, and also avoiding the jamming phenomenon, so that the movement of the sliding member 200 is more stable, thereby improving the stability of the operation of the power device 10. In view of the reduction of the frictional resistance, the abrasion of the rolling member 300 caused by the relative movement between the sliding member 200 and the housing 100 will be greatly reduced, thereby improving the cooperation precision between the rolling member 300 and the sliding groove 110, and also avoiding the swinging or jamming of the sliding member 200 during the movement, further improving the stability of the operation of the sliding member 200 and the entire power device 10. It can be understood that, in the case of reduced abrasion, the service life of the entire power device 10 can be prolonged.
[0034] Referring to Figure 2 , Figure 3 and Figure 4 , in some embodiments, the number of the sliding grooves 110 is multiple, and the multiple sliding grooves 110 are arranged along the circumference of the housing 100, for example, the number of the sliding grooves 110 can be two, three or four, etc. The rolling members 300 are arranged in multiple rows along the axial direction of the housing 100, and the number of the rows of the rolling members 300 is equal to the number of the sliding grooves 110 and one-to-one corresponding, so that each row cooperates with a different sliding groove 110. By arranging multiple sliding grooves 110, the movement precision of the sliding member 200 can be improved, avoiding the swinging or jamming of the sliding member 200 during the movement, thereby improving the stability of the operation of the entire power device 10.
[0035] In some embodiments, the number of the rolling members 300 included in each row is equal or unequal. For example, the number of the rolling members 300 included in each row can be one, two, three or four, etc. In this way, the number of the rolling members 300 in a specific row or multiple rows can be reasonably reduced according to the actual needs, thereby reducing the manufacturing cost of the power device 10.
[0036] Referring to Figure 2 , Figure 3 and Figure 4In some embodiments, the housing 100 is provided with a guide hole 120, and the sliding member 200 is inserted into the guide hole 120 so as to be in sliding fit with the guide hole 120. The inner side wall surface of the guide hole 120 can be arranged in a 360° surrounding manner around the sliding member 200, so that the inner side wall surface of the guide hole 120 plays a 360° surrounding role on the sliding member 200, thus improving the limiting effect of the housing 100 on the sliding member 200, reducing the swing of the sliding member 200 during movement, and thus improving the operation accuracy of the power device 10. In other embodiments, the sliding member 200 can be provided with a guide hole 120, and the housing 100 is inserted into the guide hole 120 and in sliding fit with the guide hole 120, so that the sliding connection relationship between the housing 100 and the sliding member 200 can also be achieved.
[0037] Referring to Figure 2 , Figure 3 and Figure 4 , in some embodiments, the rolling member 300 is arranged on the sliding member 200, and the sliding groove 110 is arranged on the inner side wall surface of the guide hole 120. Thus, during assembly, the rolling member 300 can be first mounted to the sliding member 200 outside the guide hole 120, and then the sliding member 200 mounted with the rolling member 300 is inserted into the guide hole 120. Since the rolling member 300 is assembled outside the guide hole 120, the installation of the rolling member 300 can be avoided by the housing 100, thereby improving the assembly efficiency of the rolling member 300, and ultimately reducing the manufacturing cost of the power device 10. In other embodiments, the rolling member 300 can also be arranged on the inner side wall surface of the guide hole 120, and the sliding groove 110 is arranged on the outer side surface of the sliding member 200.
[0038] Referring to Figure 2 , Figure 3 and Figure 4 , in some embodiments, the outer side surface of the sliding member 200 is recessed to form a rolling space 210, and the rolling member 300 is arranged in rolling manner in the rolling space 210. The rolling member 300 includes a fitting portion 310, which is arranged outside the rolling space 210 relative to other parts of the rolling member 300, so that the fitting portion 310 can be in sliding fit with the sliding groove 110, thus realizing the sliding connection relationship between the sliding member 200 and the housing 100. Obviously, the number of the rolling spaces 210 is equal to and corresponds to the number of the rolling members 300, and adjacent two rolling spaces 210 can be arranged in a spaced manner.
[0039] Referring to Figure 2 , Figure 3 and Figure 4In some embodiments, the rolling member 300 is spherical or cylindrical. When the rolling member 300 is spherical, the rolling space 210 can be a spherical hole; when the rolling member 300 is cylindrical, the rolling space 210 can be a cylindrical hole. Therefore, the rolling member 300 with different shapes can be selected according to actual needs.
[0040] Referring to Figure 2 , Figure 3 and Figure 4 In some embodiments, the driving mechanism 400 includes a screw rod 410, which is rotationally connected with the housing 100, so that the screw rod 410 can only rotate relative to the housing 100 and cannot slide along the axial direction of the housing 100. The screw rod 410 is inserted into the sliding member 200 and is threadedly connected with the sliding member 200. When the screw rod 410 rotates, the screw rod 410 converts the rotational motion into the sliding motion of the sliding member 200 through the action of the threaded pair, so as to achieve the driving of the sliding member 200 by the driving mechanism 400. In order to reduce the resistance generated between the screw rod 410 and the sliding member 200, a ball can be arranged between the screw rod 410 and the sliding member 200, so that the driving mechanism 400 is a ball screw rod 410 mechanism, and the friction is reduced by the rolling of the ball. In other embodiments, the driving mechanism 400 can be a gas cylinder, an oil cylinder, a linkage mechanism, a gear mechanism, or a cam mechanism, etc.
[0041] Referring to Figure 3 , Figure 4 and Figure 5 In some embodiments, the outer side surface of the sliding member 200 includes a first arc surface 220 and a first flat surface 230, and the number of the first arc surface 220 and the first flat surface 230 can be two respectively. The two first flat surfaces 230 are arranged in a spaced manner, and the two first arc surfaces 220 are arranged in a spaced manner. The spacing direction of the two first flat surfaces 230 can be perpendicular to the spacing direction of the two first arc surfaces 220. The two ends of one of the first flat surfaces 230 are respectively connected with one end of each of the two first arc surfaces 220, and the two ends of the other first flat surface 230 are respectively connected with the other end of each of the two first arc surfaces 220. The inner side wall surface of the guide hole 120 includes a second arc surface 124 and a second flat surface 125, and the number of the second arc surface 124 and the second flat surface 125 can be two respectively. The two second flat surfaces 125 are arranged in a spaced manner, and the two second arc surfaces 124 are arranged in a spaced manner. The spacing direction of the two second flat surfaces 125 can be perpendicular to the spacing direction of the two second arc surfaces 124. The two ends of one of the second flat surfaces 125 are respectively connected with one end of each of the two second arc surfaces 124, and the two ends of the other second flat surface 125 are respectively connected with the other end of each of the two second arc surfaces 124.
[0042] Referring to Figure 3 ,Figure 4 and Figure 5 The first arc surface 220 corresponds to the second arc surface 124, and along the axial direction perpendicular to the slider 200, the orthographic projection of the first arc surface 220 falls on the second arc surface 124, so that the first arc surface 220 can just cover the second arc surface 124. The first plane 230 corresponds to the second plane 125, and along the axial direction perpendicular to the slider 200, the orthographic projection of the first plane 230 falls on the second plane 125, so that the first plane 230 can just cover the second plane 125. In this way, the slider 200 cannot rotate relative to the shell 100, and it is ensured that the slider 200 can only slide relative to the shell 100, so that during the rotation of the screw rod 410, the shell 100 limits the sliding of the slider 200, thereby ensuring that the rotation of the screw rod 410 is smoothly converted into the sliding of the slider 200.
[0043] Referring to Figure 2 In some embodiments, the guide hole 120 includes a first hole 121 and a second hole 122, the second hole 122 is recessed on the top wall surface of the first hole 121, and the non-recessed part of the top wall surface of the first hole 121 forms a step surface 123 arranged around the second hole 122, and the first hole 121 and the second hole 122 are coaxially arranged, so that the guide hole 120 is actually a stepped hole. The slider 200 includes a first sliding part 240 and a second sliding part 250, the second sliding part 250 is protrudingly arranged on the end surface of the first sliding part 240, and the rolling member 300 can be arranged on the first sliding part 240. The cross section of the first sliding part 240 is larger than that of the second sliding part 250, the first sliding part 240 and the second sliding part 250 are coaxially arranged, the part of the end of the first sliding part 240 not covered by the second sliding part 250 forms a limiting surface 241, the limiting surface 241 is arranged around the second sliding part 250, the first sliding part 240 is in sliding fit with the first hole 121, and the second sliding part 250 is in sliding fit with the second hole 122. The first sliding part 240 away from the second sliding part 250 can abut against the bottom wall surface of the first hole 121, and the limiting surface 241 can abut against the step surface 123, and the interference generated by the abutment of the limiting surface 241 and the step surface 123 makes the first sliding part 240 unable to enter the second hole 122.
[0044] It can be understood that when the first sliding part 240 abuts against the bottom wall surface of the first hole 121, the slider 200 moves to a first limit position, at this time, the length of the slider 200 extending out of the guide hole 120 is the smallest; when the limiting surface 241 abuts against the step surface 123, the slider 200 moves to a second limit position, at this time, the length of the slider 200 extending out of the guide hole 120 is the largest. Therefore, through the action of the step surface 123 and the bottom wall surface of the first hole 121, the stroke of the slider 200 can be well limited.
[0045] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.
[0046] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.
Claims
1. A power plant, characterized in that The application relates to a sliding mechanism, comprising: a housing; a sliding member in sliding connection with the housing; a rolling member, one of the housing and the sliding member is provided with a sliding groove, and the other is provided with the rolling member in rolling connection with the sliding groove; and a driving mechanism arranged on the housing and driving the sliding member to slide.
2. The power plant of claim 1, wherein, The sliding grooves are arranged in a plurality of numbers and in a circumferential direction of the housing, and the rolling members are arranged in a plurality of rows in an axial direction of the housing, each row being in sliding connection with a different sliding groove.
3. The power plant of claim 2, wherein, The number of rolling members in each row is equal or unequal.
4. The power plant of claim 1, wherein, The housing is provided with a guide hole, and the sliding member is arranged in the guide hole in sliding connection with the guide hole.
5. The power plant of claim 4, wherein, The rolling member is arranged on the sliding member, and the sliding groove is arranged on the inner side wall of the guide hole.
6. The power plant of claim 4, wherein, The outer side of the rolling member is recessed to form a rolling space, the rolling member is arranged in the rolling space in rolling connection, and the rolling member comprises a matching part arranged outside the rolling space and matched with the sliding groove.
7. The power plant of claim 4, wherein The rolling member is spherical or cylindrical.
8. The power plant of claim 4, wherein, The driving mechanism comprises a screw rod in rotational connection with the housing, the screw rod is arranged in the sliding member in threaded connection with the sliding member, and the rotational movement of the screw rod is converted into the sliding movement of the sliding member.
9. The power plant of claim 8, wherein, The outer side of the sliding member comprises a first circular arc surface and a first plane, the inner side wall of the guide hole comprises a second circular arc surface and a second plane, the first circular arc surface is projected on the second circular arc surface, the first plane is projected on the second plane, and one of the first plane and the second plane is provided with the sliding groove and the other is provided with the rolling member.
10. The power plant of claim 4, wherein, The guide hole comprises a first hole and a second hole, the second hole is recessed on the top wall of the first hole, and the non-recessed part of the top wall of the first hole forms a step surface surrounding the second hole; the sliding member comprises a first sliding part and a second sliding part, the cross section of the first sliding part is larger than that of the second sliding part, the end of the first sliding part is provided with a limiting surface surrounding the second sliding part, the first sliding part is in sliding connection with the first hole, the second sliding part is in sliding connection with the second hole, the first sliding part is capable of abutting against the bottom wall of the first hole away from the second sliding part, and the limiting surface is capable of abutting against the step surface.