Lightweight electric cylinder front end cover

Abstract

The utility model relates to a light-weight electric cylinder front end cover which comprises an end cover body, the end cover body is vertically through and provided with a push rod stretching-out hole facilitating stretching out of a push rod, and the upper end of the push rod stretching-out hole is provided with a dustproof ring installation groove used for installing a dustproof ring. A copper sleeve mounting groove for mounting a copper sleeve is formed in the lower end of the push rod extending hole; and the push rod extends out of the front end cover from the push rod extending hole and is in contact with the inner wall of the front end cover, and the push rod sequentially penetrates through the copper sleeve and the dustproof ring and is in sealing contact with the copper sleeve and the dustproof ring. According to the utility model, the metal front end cover is adopted, the upper end of the metal front end cover is provided with the upper boss, and the front surface, the rear surface, the left surface and the right surface of the metal front end cover are provided with the weight reduction grooves, so that the size and the weight of the metal front end cover are effectively reduced under the condition that the strength of the metal front end cover is not damaged, and the overall weight of a product can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission, in particular to a lightweight electric cylinder front end cover. Background Art

[0002] The electric cylinder is a device that converts rotational motion into linear motion. Through the cooperation of the servo motor and the ball screw, the rotational motion of the servo motor is converted into linear motion through the ball screw.

[0003] The shell of the existing electric cylinder generally includes a front cover, a cylinder body, a rear cover, a bearing seat, an adapter seat, etc. Among them, the front cover and the rear cover are sequentially arranged and installed at the front and rear ends of the cylinder body, and seal the internal cavity of the cylinder body to ensure the sealing of the cylinder body, thereby providing good lubrication for the lead screw and the push rod.

[0004] However, in many application scenarios, in order to reduce the weight of the entire device, each accessory needs to be lightweight. In electric cylinder products, in order to reduce weight, some plastic or composite materials are often used as front cover or adapter and other parts. Although plastic or composite materials can reduce weight, their lifespan is short and their stability is poor. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a lightweight electric cylinder front end cover made of metal material.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A lightweight electric cylinder front end cover comprises an end cover body, the end cover body is through-through from top to bottom and is provided with a push rod extension hole for facilitating the extension of the push rod, the upper end of the push rod extension hole is provided with a dust ring installation groove for installing a dust ring, and the lower end of the push rod extension hole is provided with a copper sleeve installation groove for installing a copper sleeve; the push rod extends out of the front end cover from the push rod extension hole and contacts with the inner wall, and the push rod passes through the copper sleeve and the dust ring in sequence and contacts with them in a sealing manner;

[0008] The upper and lower ends of the end cover body are respectively raised to form an upper boss and a lower boss, the dust ring installation groove is arranged on the inner wall of the upper boss, and the lower boss is used to be inserted into the upper end of the cylinder body and seal with its inner wall.

[0009] Furthermore, weight-reducing grooves which are recessed inward and open at the upper end are regularly arranged on the four sides of the end cover body. The weight-reducing grooves are naturally recessed along the middle parts of the four sides of the end cover body and are arranged along the upper end opening of the end cover body.

[0010] Furthermore, the weight-reducing groove is arranged to avoid the four corners of the end cover body, and the four corners of the end cover body are located in the weight-reducing groove to form a columnar mounting foot, and the mounting foot is provided with bolt mounting holes extending therethrough from top to bottom.

[0011] Furthermore, the bolt mounting hole is a stepped bolt mounting hole, and the bolt passes through the stepped bolt mounting hole and cooperates with the threaded hole at the upper end of the cylinder body to fix the front end cover to the upper end of the cylinder body, and the bolt is hidden and locked in the stepped bolt mounting hole.

[0012] Furthermore, a plurality of positioning notches are regularly arranged at the lower ends of the front and rear faces or left and right faces of the end cover body at the slot positions on the front and rear faces or left and right faces of the cylinder body to achieve rapid positioning and assembly of the front end cover and the cylinder body.

[0013] Furthermore, the diameters of the upper boss and the lower boss are smaller than the width of the end cover body, and the diameter of the lower boss is the same as the inner diameter of the cylinder body.

[0014] Furthermore, the diameter of the upper boss is smaller than the diameter of the lower boss.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model adopts a metal front end cover, and an upper boss is arranged on the upper end of the metal front end cover, and weight reduction grooves are arranged on the front, back, left and right four surfaces of the metal front end cover, so as to effectively reduce the volume and weight of the metal front end cover without destroying the strength of the metal front end cover, and also reduce the overall weight of the product.

[0017] 2. The utility model provides a dustproof ring and a copper sleeve at the upper and lower ends of the front end cover, respectively. The copper sleeve adopts a long copper sleeve, which can effectively prevent dust in the external environment from entering the cylinder body and effectively prevent the oil body inside the cylinder body from leaking out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 for Figure 1 Middle three-dimensional structure diagram;

[0020] Figure 3 It is an application schematic diagram of the utility model;

[0021] The markings in the figure are:

[0022] 11. Front cover, 12. Cylinder body, 13. Bearing seat, 14. Direct connection seat, 15. Bottom plate; 2. Coupling, 3. Bearing, 41. Screw, 42. Screw nut, 5. Piston, 6. Push rod, 7. Adapter rod, 8. Dust ring, 9. Copper sleeve;

[0023] 111. Push rod mounting hole, 112. Dust ring mounting groove, 113. Copper sleeve mounting groove, 1101. End cover body, 1102. Upper boss, 1103. Lower boss, 1104. Mounting foot, 1105. Bolt mounting hole, 1106. Weight reduction groove, 1107. Positioning notch. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] like Figure 1 and Figure 2 As shown, the utility model provides a lightweight electric cylinder front end cover, including an end cover body 1101, and the end cover body 1101 is provided with a push rod extension hole 111 through the upper and lower parts for facilitating the extension of the push rod. Further, a dust ring installation groove 112 for installing a dust ring is provided at the upper end of the push rod extension hole 111, and a copper sleeve installation groove 113 for installing a copper sleeve is provided at the lower end of the push rod extension hole 111. The push rod 6 extends out of the front end cover from the push rod extension hole 111, passes through the copper sleeve in the copper sleeve installation groove and the dust ring in the dust ring installation groove in sequence, and is in sealing contact with them.

[0027] Among them, Figure 3As shown, the dust ring 8 at the front end of the front cover 11 can effectively prevent dust in the external environment from being adsorbed on the push rod during the reciprocating linear motion of the push rod, and being brought into the cylinder body by the push rod, polluting the internal environment of the cylinder body, and causing the performance of the product to be weakened. The copper sleeve 9 at the rear end of the front cover 11 can effectively prevent the oil body inside the cylinder body from leaking out during the reciprocating linear motion of the push rod, causing the performance of the product to be weakened, and at the same time causing pollution problems to the external environment. Therefore, the dust ring 8 and copper sleeve 9 respectively set at the front and rear ends of the front cover can effectively prevent dust in the external environment from entering the cylinder body, and can also effectively prevent the oil body inside the cylinder body from leaking out.

[0028] Further, such as Figure 1 As shown, the upper and lower ends of the end cover body 1101 are respectively raised to form an upper boss 1102 and a lower boss 1103. The upper boss 1102 is mainly used for the setting and weight reduction of the dust ring mounting groove 112. Through the natural protrusion of the upper boss, the dust ring mounting groove 112 can be set on its inner wall, thereby effectively reducing the weight and volume of the front cover. The lower boss 1103 is used to be inserted into the upper end of the cylinder body and fit and seal with the inner wall of the upper end of the cylinder body.

[0029] Further, the diameters of the upper and lower bosses are smaller than the width of the end cover body 1101. The diameter of the lower boss 1103 is the same as the inner diameter of the cylinder body 12. In one embodiment, the diameter of the upper boss 1102 is smaller than the diameter of the lower boss 1103.

[0030] Further, such as Figure 2 As shown, bolt mounting holes 1104 are regularly arranged at the four corners of the end cover body 1101, and the bolt mounting holes 1104 are bolt mounting holes with steps. Figure 3 As shown, threaded holes cooperating with the bolt mounting holes 1104 are provided at the four corners of the upper end of the cylinder body 11 .

[0031] Furthermore, in order to further reduce the weight of the front end cover 11 while ensuring the overall structural strength of the front end cover, weight reduction grooves 1106 that are inwardly concave and open at the top are regularly arranged on the front, rear, left, and right four surfaces of the end cover body 1101. The weight reduction grooves 1106 are naturally concave along the middle part of the front, rear, left, and right four surfaces of the end cover body 1101, and are designed to be open along the top of the end cover body 1101, thereby forming a Figure 2 The lightening slot 1106 is shown as being open at the upper end.

[0032] Furthermore, the weight-reducing groove 1106 is designed to avoid the bolt mounting hole 1104 , so that columnar mounting feet 1105 are naturally formed at the four corners of the end cover body 1101 .

[0033] In order to ensure the service life and stability of the electric cylinder device in the utility model, the front end cover 11 is made of metal. Although the metal material can improve its service life and stability, it is relatively heavy. Figure 1 and Figure 2 As shown, the front end cover of the electric cylinder of the present invention can effectively reduce the weight of the front end cover through the design of the upper boss 1102 and the weight reduction grooves 1106 on the front, back, left and right sides, thereby reducing the overall weight of the electric cylinder.

[0034] Further, such as Figure 2 and Figure 3 As shown, the lower ends of the front, back, left, and right sides of the end cover body 1101 are respectively foolproofed at the front and back sides and the left and right sides. The front and back sides of the end cover body 1101 are regularly provided with a plurality of positioning notches 1107 at the slot positions of the front and back sides of the cylinder body 11, so as to distinguish the left and right sides thereof, which is convenient for the early assembly work on the one hand, and integrally formed with the cylinder body after being spliced ​​on the other hand, reducing the abruptness and making it more beautiful.

[0035] like Figure 3 The figure shows an application diagram of the lightweight electric cylinder front end cover of the utility model.

[0036] The front and rear ends of the cylinder body 12 are respectively provided with a front cover 11 and a bearing seat 13, and the bearing seat 13 serves as the rear end cover of the cylinder body. The rear end of the bearing seat 13 is provided with a direct connection seat 14, a bottom plate 15 and a motor (omitted in the figure) in sequence, and the motor is arranged and installed at the rear end of the direct connection seat 14 through the bottom plate 15. Among them, the bottom plate 15 serves as an adapter plate of the motor, which is fixed behind the direct connection seat.

[0037] Furthermore, the cylinder body 11 is regularly provided with a coupling 2, a lead screw, a piston 5 and a push rod 6. The piston 5 is used as an intermediate piece between the lead screw and the push rod 6, which are spliced ​​and installed together. The push rod 6 is fixed at the front end of the piston 5 and extends out of the front end cover 12. The lead screw includes a lead screw 41 and a lead screw nut 42, the lead screw nut 42 is fixed at the rear end of the piston 5, the lead screw 41 passes through the lead screw nut 42, and is rotatably connected with the lead screw nut 42 through a plurality of balls.

[0038] Furthermore, the push rod 6 is a tubular push rod with a hollow interior. The front end of the screw rod 41 passes through the piston 5 and is disposed inside the push rod 6; the rear end of the screw rod 41 passes through a plurality of bearings 3 on the bearing seat 13 and is connected to the rotating shaft of the motor through the coupling 2.

[0039] Furthermore, a transfer rod 7 is provided at the front end of the push rod 6 . The transfer rod 7 serves as a transfer rod of the push rod on one hand, and seals the front end of the push rod 6 on the other hand, thereby sealing the front end of the screw rod 41 inside the push rod 6 .

[0040] Among them, the motor drives the screw 41 to rotate through the coupling 2, and the screw nut 42 on the screw 41 converts the rotational motion of the screw into linear motion, thereby driving the piston 5 to make linear motion along the inner wall of the cylinder body 11. Further, the piston 5 drives the push rod 6 at its front end to make linear motion. The utility model can effectively reduce the weight of the metal front end cover by setting the weight reduction groove on the upper boss and the side of the cylinder body. On the premise of ensuring the structural strength of the front end cover, the weight of the front end cover is reduced as much as possible, thereby reducing the weight of the entire electric cylinder device. At the same time, the dust ring 8 and the copper sleeve 9 respectively set at the front and rear ends of the front end cover can effectively prevent dust in the external environment from entering the cylinder body, and can also effectively prevent the oil body inside the cylinder body from leaking out.

[0041] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightweight electric cylinder front end cover, comprising an end cover body (1101), characterized in that: The end cover body (1101) is penetrated from top to bottom and is provided with a push rod extension hole (111) for facilitating the extension of the push rod; the upper end of the push rod extension hole (111) is provided with a dust ring installation groove (112) for installing a dust ring; the lower end of the push rod extension hole is provided with a copper sleeve installation groove (113) for installing a copper sleeve; the push rod extends out of the front end cover from the push rod extension hole (111) and contacts the inner wall; the push rod passes through the copper sleeve and the dust ring in sequence and contacts them in a sealed manner; The upper and lower ends of the end cover body are respectively raised to form an upper boss (1102) and a lower boss (1103); the dust ring mounting groove (112) is arranged on the inner wall of the upper boss (1102); and the lower boss (1103) is used to be inserted into the upper end of the cylinder body and to fit and seal with the inner wall.

2. A lightweight electric cylinder front end cover as claimed in claim 1, characterized in that: The end cover body (1101) is regularly provided with weight-reducing grooves (1106) which are recessed inwards and open at the upper end. The weight-reducing grooves (1106) are naturally recessed along the middle part of the four sides of the end cover body (1101) and are provided along the upper end opening of the end cover body.

3. A lightweight electric cylinder front end cover as claimed in claim 2, characterized in that: The weight-reducing groove is arranged to avoid the four corners of the end cover body (1101), and the four corners of the end cover body (1101) are located in the weight-reducing groove (1106) to form a columnar mounting foot (1105), and the mounting foot (1105) is provided with bolt mounting holes (1104) extending therethrough from top to bottom.

4. A lightweight electric cylinder front end cover as claimed in claim 3, characterized in that: The bolt mounting hole (1104) is a bolt mounting hole with a step, and the bolt passes through the bolt mounting hole with a step and cooperates with the threaded hole at the upper end of the cylinder body to fix the front end cover to the upper end of the cylinder body. The bolt is hidden and locked in the bolt mounting hole with a step.

5. A lightweight electric cylinder front end cover according to any one of claims 1 to 4, characterized in that: A plurality of positioning notches (1107) are regularly arranged at the lower ends of the front and rear surfaces or left and right surfaces of the end cover body at the slot positions on the front and rear surfaces or left and right surfaces of the cylinder body to achieve rapid positioning and assembly of the front end cover and the cylinder body.

6. A lightweight electric cylinder front end cover as claimed in claim 5, characterized in that: The diameters of the upper boss (1102) and the lower boss (1103) are smaller than the width of the end cover body, and the diameter of the lower boss is the same as the inner diameter of the cylinder body.

7. A lightweight electric cylinder front end cover as claimed in claim 6, characterized in that: The diameter of the upper boss (1102) is smaller than the diameter of the lower boss (1103).

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