CN215334428U

CN215334428U - End cover assembly and electric push rod

Info

Publication number: CN215334428U
Application number: CN202121109186.6U
Authority: CN
Inventors: 郑犁; 刘槟
Original assignee: Smart Electronic Industrial Dong Guan Co ltd
Current assignee: Smart Electronic Industrial Dong Guan Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-12-28
Anticipated expiration: 2031-05-20

Abstract

The utility model discloses an end cover assembly and an electric push rod, wherein the end cover assembly comprises a first end cover and a second end cover, the second end cover comprises a first connecting section and a second connecting section which are integrally connected, the first connecting section is inserted into and bonded in a first cavity, the second connecting section can be fixed in a shell, a first sealing element is sleeved outside the first connecting section, the first sealing element is clamped between one end of the first end cover close to the second connecting section and a protruding end, and the second sealing element is sleeved outside the push rod; the electric push rod comprises the end cover assembly. According to the utility model, the end cover assembly can be integrally connected with the shell and the push rod, the assembly efficiency is high, the assembly of the first end cover and the second end cover and the clamping and fixing of the first sealing element can be simultaneously realized by the splicing of the first end cover and the second end cover, and the assembly efficiency is high.

Description

End cover assembly and electric push rod

Technical Field

The utility model relates to the technical field of electric push rods, in particular to an end cover assembly and an electric push rod.

Background

The electric push rod is a linear actuating mechanism which converts the rotary motion of the motor into the linear reciprocating motion of the push rod, and can be used as an actuating instrument in process equipment with different complexity degrees to realize remote control. The end of shell and push rod is provided with the end cover usually to carry out the connection of the two, fixed, has higher sealed requirement between push rod and shell, the end cover, in order to guarantee that the relative shell of push rod carries out reciprocating motion's in-process, electric putter's internals does not receive external environment's influence, and in the correlation technique, need assemble the end cover again after waterproof part is fixed earlier, in order to realize the installation fixed and waterproof requirement, assembly efficiency is low.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an end cover assembly which has a sealing function, can be installed on an electric push rod and is high in assembly efficiency.

The utility model also provides an electric push rod with the end cover assembly.

The end cover assembly according to the embodiment of the first aspect of the present invention is used for connecting a housing and a push rod, wherein the push rod is arranged in the housing in a penetrating manner, and the end cover assembly comprises:

the first end cover is hollow inside to form a first cavity;

the second end cover is internally hollow to form a second cavity, the second cavity is used for the push rod to penetrate through, the second end cover comprises a first connecting section and a second connecting section which are integrally connected, the outer surface of one end, close to the first connecting section, of the second connecting section protrudes outwards relative to the outer surface of the first connecting section to form a protruding end, the first connecting section is inserted into and bonded with the first cavity, the second connecting section is positioned outside the first cavity, and the second connecting section can be fixed inside the shell;

the first sealing element is sleeved outside the first connecting section and clamped between one end, close to the second connecting section, of the first end cover and the protruding end;

and the second sealing element is fixed inside the second end cover and is used for being sleeved outside the push rod.

The end cover assembly provided by the embodiment of the utility model has at least the following beneficial effects:

the end cover assembly provided by the embodiment of the utility model can be integrally connected with the shell and the push rod, the assembly efficiency is higher, the end cover assembly is internally provided with the sealing part, the sealing part can seal the joint of the first end cover and the second end cover and seal the outer surface of the push rod, and the integral sealing performance of the electric push rod is ensured; in addition, the mutual assembly of the first end cover and the second end cover and the clamping and fixing of the first sealing element can be realized simultaneously by the mutual insertion of the first end cover and the second end cover, the first end cover and the second end cover do not need to be assembled after the first sealing element is fixed, and the assembly efficiency is high.

According to some embodiments of the present invention, an inner wall of the second end cap near one end of the second connecting section is recessed outward to form a mounting groove, the mounting groove is communicated with the second cavity, and the second sealing element is accommodated in the mounting groove.

According to some embodiments of the present invention, the second sealing member includes a skeleton and a sealing body, the sealing body is wrapped outside the skeleton, and a hardness of the sealing body is less than a hardness of the skeleton.

According to some embodiments of the utility model, the sealing body has a first arm and a second arm integrally connected, the second arm is disposed on a side of the sealing body near the push rod, the first arm is used for inserting the skeleton and contacting with the housing, and the second arm is used for contacting with an outer wall of the push rod.

According to some embodiments of the utility model, the cross-sectional area of the first cavity is gradually increased along the direction of plugging the first end cover to the second end cover; and the sectional area of the first connecting section is gradually reduced along the direction of inserting the second end cover into the first end cover.

According to some embodiments of the utility model, the outer wall of the first connecting section is provided with a glue receiving groove.

According to some embodiments of the utility model, the ice scraping ring is used for being sleeved outside the push rod, the ice scraping ring is located in the first cavity, one end of the first end cover, far away from the second connecting section, protrudes inwards to form a mounting step, and the ice scraping ring is clamped between the end face of the first connecting section and the mounting step.

According to some embodiments of the utility model, the anti-slip part is sleeved outside the first end cover, or the anti-slip part is integrally formed on the first end cover.

An electric putter according to an embodiment of the second aspect of the present invention includes:

the above-described end cap assembly;

the shell is sleeved outside the second connecting section;

the push rod penetrates through the second cavity, and the second sealing piece is sleeved outside the push rod.

The electric push rod provided by the embodiment of the utility model at least has the following beneficial effects:

according to the electric push rod provided by the embodiment of the utility model, the end cover assembly is convenient to assemble with the shell and the push rod, the end cover assembly has a sealing function, and the sealing performance of the electric push rod is ensured while the assembly efficiency of the electric push rod is improved.

According to some embodiments of the utility model, an end surface of the housing proximate the first end cap and an end surface of the first end cap proximate the housing contact each other such that the housing shields the second connection segment from the first seal.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic structural view of one embodiment of an endcap assembly of the present invention;

FIG. 2 is a schematic view of the end cap assembly of FIG. 1 in combination with a housing and a push rod;

FIG. 3 is an exploded view of the first end cap and the second end cap of FIG. 1;

FIG. 4 is a schematic view of the second seal of FIG. 1;

fig. 5 is a schematic structural view of the first end cap in fig. 1.

Reference numerals: a housing 100; a push rod 200; a first end cap 300, a first cavity 310, a mounting step 320; the second end cover 400, the second cavity 410, the first connecting section 420, the glue containing groove 421, the second connecting section 430, the protruding end 431 and the mounting groove 440; a first seal 500; a second seal 600, a frame 610, a seal body 620, a first arm 621, a second arm 622; a slip prevention part 700; an ice scraping ring 800.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 and 2, in an embodiment of the present invention, an end cap assembly is provided for connecting a housing 100 and a push rod 200 in an electric push rod, the end cap assembly includes a first end cap 300 and a second end cap 400, an interior of the first end cap 300 is hollow to form a first cavity 310, an interior of the second end cap 400 is hollow to form a second cavity 410, referring to fig. 1 and 3, the second end cap 400 includes a first connecting section 420 and a second connecting section 430 that are integrally connected, and the first connecting section 420 is inserted into and bonded to the first cavity 310 to achieve assembly and fixation of the first end cap 300 and the second end cap 400; the first end cap 300 and the second end cap 400 may be assembled in advance to form an end cap assembly, and then the end cap assembly is integrally connected to the housing 100 and the push rod 200, specifically, the push rod 200 is inserted into the second cavity 410, the second connecting section 430 is located outside the first cavity 310, and the housing 100 may be sleeved outside the second connecting section 430 to complete the installation of the end cap assembly, the push rod 200 and the housing 100, so that the assembling efficiency is high. In addition, the end cap assembly further includes a first sealing member 500 and a second sealing member 600, the first sealing member 500 is sleeved outside the first connecting section 420, an outer surface of the second connecting section 430 near one end of the first connecting section 420 protrudes outwards relative to the outer surface of the first connecting section 420 and forms a protruding end 431, the first sealing member 500 is clamped between one end of the first end cap 300 near the second connecting section 430 and the protruding end 431, and the first sealing member 500 seals a connection between the first end cap 300 and the second end cap 400; the second sealing member 600 is fixed inside the second end cap 400, the second sealing member 600 is sleeved outside the push rod 200, and the second sealing member 600 is used for sealing a gap between the push rod 200 and the second end cap 400, so as to prevent external dust and moisture from being brought into the electric push rod due to the movement of the push rod 200.

It should be noted that, the second sealing element 600 is fixed inside the second end cap 400 in advance, when the first end cap 300 is assembled with the second end cap 400, the first sealing element 500 may be firstly sleeved on the first connection section 420, the surface of the first connection section 420 and/or the inner wall of the first end cap 300 is coated with the adhesive, after the first connection section 420 is inserted into the first end cap 300, the first end cap 300 is fixedly adhered to the first connection section 420, and the first sealing element 500 is clamped between the protruding end 431 and the end surface of the first end cap 300, so that the assembly efficiency is high.

The end cover assembly provided by the embodiment of the utility model can be integrally connected with the shell 100 and the push rod 200, the assembly efficiency is high, the end cover assembly is internally provided with the sealing part, the sealing part can seal the joint of the first end cover 300 and the second end cover 400 and seal the outer surface of the push rod 200, and the integral sealing performance of the electric push rod is ensured; in addition, the mutual assembly of the first end cover and the second end cover and the clamping and fixing of the first sealing element can be realized simultaneously by the mutual insertion of the first end cover and the second end cover, the first end cover and the second end cover do not need to be assembled after the first sealing element is fixed, and the assembly efficiency is high.

The term "inner" refers to the side of the first and

second end caps

300 and 400 close to the inner cavity, and the term "outer" refers to the side of the first and

second end caps

300 and 400 away from the inner cavity. It is conceivable that both ends of the first and

second end caps

300 and 400 have openings to communicate the first and

second cavities

310 and 410, and the push rod 200 can pass through the first and

second cavities

310 and 410 and enter the inside of the housing 100.

The first connecting segment 420 is fixed on the inner wall of the first end cap 300 by bonding, for example, using ABS glue, PVC glue, etc. to bond the first end cap 300 and the second end cap 400. The outer wall of first linkage segment 420 is provided with and holds gluey groove 421, holds gluey groove 421 and is used for holding the viscose agent, holds gluey groove 421 through setting up, can avoid the viscose agent to spill over on the one hand, improves the intensity and the durability that first end cap 300 and second end cap 400 bonded on the other hand. A plurality of glue containing grooves 421 may be provided, and a plurality of rows of glue containing grooves 421 are formed on the outer surface of the first connecting section 420 in a surrounding manner, so as to improve the bonding uniformity and bonding strength between the first connecting section 420 and the first end cap 300; the glue containing groove 421 can be arranged in a ring shape, a dot shape, a strip shape, or the like.

In one embodiment, the first sealing member 500 is a waterproof sealing ring, the first sealing member 500 is made of silica gel or rubber, and the first sealing ring and the outer wall of the first connecting section 420, the protruding end 431 and the end surface of the first end cap 300 are mutually extruded to improve the sealing effect. The second seal 600 may optionally be a dust ring to block dust carried by the push rod 200 from the outside environment.

The second sealing member 600 is fixed inside the second end cap 400 in a bonding manner, so that the second sealing member 600 is prevented from moving along with the movement of the push rod 200 to affect the sealing effect, and the bonding fixing manner is simple and convenient to operate. Specifically, the inner wall of the second end cap 400 near one end of the second connection section 430 is recessed outward to form a mounting groove 440, the mounting groove 440 is communicated with the second cavity 410, the second sealing element 600 is accommodated in the mounting groove 440, a mounting surface for fixing the second sealing element 600 is formed by the end surface and the side wall of the mounting groove 440, quick-drying glue can be coated on the end surface and the side surface of the mounting groove 440 or the surface of the second sealing element 600, and after the second sealing element 600 is inserted into the mounting groove 440 from the opening of the second end cap 400, the second sealing element 600 is adhered in the mounting groove 440; in addition, the end surface of the mounting groove 440 can provide a supporting and limiting effect for the second sealing element 600, and the second sealing element 600 is prevented from moving along with the push rod 200.

Because the second sealing member 600 is in contact with the second end cap 400 and the push rod 200, the contact area between the second sealing member 600 and an external element is large, and along with the movement of the push rod 200, the second sealing member 600 is easily deformed by the driving of the push rod 200, so that the sealing effect of the second sealing member 600 is affected; referring to fig. 4, in an embodiment of the present invention, the second sealing member 600 includes a skeleton 610 and a sealing body 620, the sealing body 620 covers the outside of the skeleton 610, the hardness of the sealing body 620 is less than the hardness of the skeleton 610, the sealing body 620 contacting the push rod 200 and the second end cap 400 is softer, the strength of the skeleton 610 supporting the sealing body 620 is greater, and the skeleton 610 and the sealing body 620 are used in combination, so that the deformation of the second sealing member 600 is reduced, and the second sealing member 600 always maintains a good seal with the push rod 200. The frame 610 may be made of metal, plastic, etc., and the sealing body 620 may be made of silica gel, rubber, etc.

In one embodiment of the present invention, the sealing body 620 has a first arm 621 and a second arm 622 integrally connected, the second arm 622 is disposed on one side of the sealing body 620 close to the push rod 200, the first arm 621 is disposed on one side of the sealing body 620 close to the housing 100, the first arm 621 is used for the insertion of the skeleton 610, the first arm 621 contacts with the housing 100, and the second arm 622 is used for contacting with the outer wall of the push rod 200; make first arm 621 can keep the inseparable laminating with second end cover 400 under the supporting role of skeleton 610, and reduce the deformation of first arm 621, the one end that first arm 621 is connected with second arm 622 keeps fixed, can avoid second arm 622 to follow push rod 200 and move, and because second arm 622 is softer, second arm 622 and push rod 200's outer wall laminating degree is high, sealed effect is better, thereby through setting up first arm 621 and second arm 622, can seal the inner wall of second end cover 400 and the outer wall of push rod 200 simultaneously, avoid outside dust, inside steam gets into electric putter from between second end cover 400 and push rod 200.

It is conceivable that the first arm 621 has a cavity for the framework 610 to be inserted into, and the cross section of the first arm 621 may be a straight line type or a broken line type, in an embodiment of the present invention, the first arm 621 is in an "L" shape, the structure of the framework 610 matches with the structure of the first arm 621, the "L" shaped framework 610 can simultaneously support the first arm 621 in the horizontal and vertical directions, the first arm 621 can simultaneously seal the side wall and the end face of the mounting groove 440, and the support effect of the framework 610 on the first arm 621 and the sealing effect of the first arm 621 on the inner wall of the second end cap 400 are better.

Referring to fig. 3, to facilitate the mutual assembly of the first end cap 300 and the second end cap 400, in one embodiment, the sectional area of the first cavity 310 is gradually increased along the insertion direction of the first end cap 300 to the second end cap 400, and the sectional area of the first connection segment 420 is gradually decreased along the insertion direction of the second end cap 400 to the first end cap 300, so that the first connection segment 420 is inserted into the first cavity 310.

In addition, the installation groove 440 may be disposed at one end of the second end cap 400 close to the second connection section 430, and since the first connection section 420 has a tendency to shrink, the second connection section 430 has enough installation space to install the installation groove 440 compared to the first connection section 420, so as to match the second sealing element 600 with a large contact surface, so that a larger contact area is provided between the second sealing element 600 and the inner walls of the push rod 200 and the second end cap 400, and the sealing effect of the second sealing element 600 is optimized.

The end cover assembly further comprises an anti-slip part 700, the anti-slip part 700 is sleeved outside the first end cover 300, or the anti-slip part 700 is integrally formed on the anti-slip part, the anti-slip part 700 can increase the friction force between the hand of a worker and the first end cover 300, and the end cover assembly is convenient to disassemble and assemble. Specifically, the anti-slip portion 700 may be an anti-slip sleeve wrapped outside the first end cap 300, such as a rubber sleeve, a silicone sleeve, and the like, and referring to fig. 5, the anti-slip portion 700 may also be a groove disposed on the outer surface of the first end cap 300, or the anti-slip portion 700 may be a protrusion disposed on the outer surface of the first end cap 300.

Referring to fig. 1 and 2, the end cap assembly further includes an ice scraping ring 800, the ice scraping ring 800 is sleeved outside the push rod 200 and fixed between the first end cap 300 and the second end cap 400, the push rod 200 can move relative to the ice scraping ring 800, and the ice scraping ring 800 is used for scraping ice and snow accumulated on the surface of the push rod 200. Specifically, the ice scraping ring 800 is located in the first cavity 310, one end of the first end cover 300, which is far away from the second connecting section 430, protrudes inwards to form a mounting step 320, and the ice scraping ring 800 is clamped between the end face of the first connecting section 420 and the mounting step 320; can insert the first end cover 300 inside with scraping ice ring 800 earlier, first end cover 300 bonds the back with second end cover 400 each other, under the clamping action of first end cover 300 with second end cover 400, realizes scraping ice ring 800's fixed, and it is comparatively convenient to install. In addition, the ice scraping ring 800 may be made of a self-lubricating material, such as teflon, polyoxymethylene, polyamide, etc., to reduce friction between the ice scraping ring 800 and the push rod 200 and influence of the ice scraping ring 800 on the movement of the push rod 200.

Referring to fig. 2, the present invention further provides an electric putter, which includes the above-mentioned end cover assembly, and further includes a housing 100 and a putter 200, wherein the housing 100 is sleeved outside the second connection section 430, the putter 200 is inserted into the second cavity 410 and the housing 100, and the putter 200 reciprocates in the housing 100 under the driving of the power element in the electric putter plate; the second sealing member 600 is sleeved outside the push rod 200 to seal a gap between the push rod 200 and the end cap assembly, and the first sealing member 500 seals a joint between the first end cap 300 and the second end cap 400.

The outer shell 100 can be fixedly connected with the second connecting section 430 through bonding or screwing, in one embodiment of the utility model, the outer surface of the second connecting section 430 is provided with external threads, one end of the outer shell 100 is provided with internal threads matched with the second connecting section 430, the end cover assembly can be connected with the outer shell 100 through screwing, and the operation is high in convenience and rapidness. In addition, the terminal surface that shell 100 is close to first end cover 300 docks with the terminal surface that first end cover 300 is close to shell 100, and second linkage segment 430 and first sealing member 500 can be sheltered from to shell 100, makes electric putter's outward appearance more clean and tidy on the one hand, and on the other hand can avoid the end cover subassembly to receive external environment influence, improves electric putter's sealing performance.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims

1. The end cover subassembly for connect shell and push rod, the push rod wears to locate the inside of shell, its characterized in that includes:

the first end cover is hollow inside to form a first cavity;

2. The end cap assembly of claim 1, wherein an inner wall of the second end cap proximate the second connecting section end is recessed outwardly to form a mounting groove, the mounting groove communicating with the second cavity, the second seal member being received in the mounting groove.

3. The end cap assembly of claim 1, wherein the second seal member includes a skeletal member and a seal body that is wrapped around an exterior of the skeletal member, the seal body having a hardness that is less than a hardness of the skeletal member.

4. An end cap assembly according to claim 3, wherein said sealing body has integrally connected first and second arms, said second arm being disposed on a side of said sealing body adjacent said push rod, said first arm being adapted for insertion of said armature into contact with said housing, said second arm being adapted for contact with an outer wall of said push rod.

5. The end cap assembly of claim 1, wherein the first cavity has a gradually increasing cross-sectional area in a direction of insertion of the first end cap into the second end cap; and the sectional area of the first connecting section is gradually reduced along the direction of inserting the second end cover into the first end cover.

6. An end cap assembly according to any one of claims 1 to 5, wherein the outer wall of the first connecting section is provided with a glue receiving groove.

7. The end cover assembly according to any one of claims 1 to 5, further comprising an ice scraping ring, wherein the ice scraping ring is sleeved outside the push rod and located in the first cavity, one end of the first end cover, which is far away from the second connecting section, protrudes inwards to form a mounting step, and the ice scraping ring is clamped between an end face of the first connecting section and the mounting step.

8. The end cap assembly of any one of claims 1-5, further comprising a slip resistant portion that is sleeved on an exterior of the first end cap or is integrally formed with the first end cap.

9. Electric putter, its characterized in that includes:

the end cap assembly of any one of claims 1 to 8;

the shell is sleeved outside the second connecting section;

10. The power putter of claim 9, wherein an end surface of the housing proximate the first end cap and an end surface of the first end cap proximate the housing contact each other such that the housing shields the second connector segment from the first seal.