Oil injection tool

Abstract

The embodiment of the utility model relates to the technical field of oil injection, in particular to an oil injection tool to solve the technical problem that the oil injection amount is unstable in the related technology. The oil filling device comprises an upper cover and a base, the upper cover is provided with a cavity, and oil filling holes are formed in the side wall of the upper cover and evenly arranged around the side wall in the circumferential direction. The base is provided with a first boss which extends into the cavity, the peripheral face of the first end of the first boss is attached to the inner wall of the cavity, a gap is formed between the peripheral face of the second end of the first boss and the inner wall of the cavity, and an oil storage cavity is formed between the first boss and the wall face of the cavity and communicated with the oil injection hole; an oil inlet channel is formed in the base and communicated with the oil storage cavity, and the center line of the oil inlet channel coincides with the center line of the upper cover and the center line of the base. Lubricating grease firstly enters the middle of the oil storage cavity through the oil inlet channel, so that the oil injection pressure gradually becomes uniform from the middle to the two sides, the lubricating grease can uniformly flow out through the oil injection holes in the side wall of the cavity, and the technical problem that the oil injection amount is unstable in the related technology is solved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present disclosure belongs to the technical field of sealing, and particularly relates to an oil injection tool. BACKGROUND

[0002] With the development of technology, oil injection is changed from manual coating to automatic injection by equipment. The uncontrollable problem of oil injection amount is solved, labor intensity is reduced, and production efficiency is improved.

[0003] In the related art, the oil injection tool generally comprises a base and an upper cover, and the upper cover is detachably connected with the base. The base has an oil inlet channel, and the circumferential surface of the upper cover is provided with a plurality of oil injection holes for realizing oil injection to the oil seal.

[0004] However, in the oil injection tool in the related art, the lubricating grease is injected from the bottom oil inlet channel, so that the oil injection pressure of the lower part of the oil injection cavity is large, thereby causing the oil injection amount output by the oil injection hole close to the bottom to be large, and the oil injection amount output by the oil injection hole at the upper part to be small, and finally causing the technical problem of unstable oil injection amount in continuous output. CONTENT OF THE INVENTION

[0005] The embodiment of the present disclosure provides an oil injection tool to solve the technical problem of unstable oil injection amount in the related art.

[0006] The solution of the embodiment of the present disclosure to solve the above technical problem is as follows:

[0007] An oil injection tool comprises,

[0008] an upper cover having a cavity, a plurality of oil injection holes being provided on the side wall of the cavity and being uniformly arranged around the circumference of the side wall;

[0009] a base having a first boss extending into the cavity; the outer circumferential surface of the first end of the first boss is in close contact with the inner wall of the cavity, the outer circumferential surface of the second end of the first boss has a gap with the inner wall of the cavity, and an oil storage cavity is formed between the first boss and the wall of the cavity, the oil storage cavity being in communication with the plurality of oil injection holes; the base is provided with an oil inlet channel in communication with the oil storage cavity, and the center line of the oil inlet channel coincides with the center line of the upper cover and the center line of the base.

[0010] The beneficial effects of the embodiments of the present disclosure are as follows: by arranging the first boss on the base and extending into the cavity, the oil storage cavity is formed between the first boss and the wall surface of the cavity, so that the height of the two ends of the oil storage cavity along the center line of the base is greater than the height of the middle part along the center line of the base, and the oil storage cavity presents a structure similar to the Chinese character 'j'. At the same time, the oil injection hole is arranged on the side wall of the cavity, that is, the oil injection hole is arranged corresponding to the two end parts of the oil storage cavity; and the center line of the oil inlet channel, the center line of the upper cover and the center line of the base coincide. By adopting the above structure, when the oil enters the oil storage cavity through the oil inlet channel, the oil will flow uniformly to the two ends of the oil storage cavity through the middle position of the oil storage cavity similar to the Chinese character 'H', and then the oil will flow out uniformly through the oil injection hole on the side wall of the oil injection cavity, that is, the oil injection amount output by the oil injection hole is uniform. That is, because the oil enters the middle part of the cavity through the oil inlet channel and flows uniformly to the two side positions of the cavity from the middle part, the oil can flow out uniformly through the oil injection hole on the side wall of the cavity, thereby solving the technical problem that in the related art, the oil injection pressure at the lower part of the oil injection cavity is large, thereby causing the oil injection amount output by the oil injection hole close to the bottom to be large, and the oil injection amount output by the oil injection hole at the upper part to be small, and finally causing the oil injection amount to be unstable each time during continuous output.

[0011] On the basis of the above technical solutions, the embodiments of the present disclosure can also be improved as follows.

[0012] In a possible implementation manner, the cavity of the upper cover has a second boss, the second boss is located on the top wall of the cavity, and the second boss is arranged opposite to the first boss and extends towards the first boss, and the oil storage cavity is formed between the first boss, the second boss and the inner wall of the cavity.

[0013] In a possible implementation manner, the oil storage cavity includes a main flow channel and a branch flow channel which are in communication with each other, the main flow channel is formed between the first boss and the second boss, and the branch flow channel is arranged around the outer periphery of the main flow channel and is formed between the inner wall of the cavity, the side wall of the first boss and the side wall of the second boss.

[0014] In a possible implementation manner, the oil storage cavity is symmetrically arranged along the center line of the oil inlet channel.

[0015] In a possible implementation manner, the top end surface of the first boss and the bottom end surface of the second boss are arranged in parallel.

[0016] In a possible implementation manner, the oil injection holes are arranged in two rows and in parallel on the inner wall of the cavity, and the oil injection holes are in communication with the branch flow channel.

[0017] In a possible implementation manner, the upper cover and the base are connected by screws.

[0018] In a possible implementation, the second end of the first boss is in a frustum structure.

[0019] In a possible implementation, the width of the upper end of the branch channel along the horizontal direction is greater than the width of the lower end of the branch channel.

[0020] In a possible implementation, the gap between the oil filling holes is 1.2 mm-1.5 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the overall structure of the oil filling tool provided in an embodiment of the present disclosure;

[0023] Figure 2 Schematic diagram of the structure of the upper cover provided in the embodiment of the present disclosure Figure One ;

[0024] Figure 3 Schematic diagram of the structure of the upper cover provided in the embodiment of the present disclosure Figure Two ;

[0025] Figure 4 Schematic diagram of the structure of the upper cover provided in the embodiment of the present disclosure Figure Three ;

[0026] Figure 5 Schematic diagram of the structure of the upper cover provided in the embodiment of the present disclosure Figure Four ;

[0027] Figure 6 A schematic diagram of the structure of the base provided in the embodiment of the present disclosure Figure One ;

[0028] Figure 7 A schematic diagram of the structure of the base provided in the embodiment of the present disclosure Figure Two ;

[0029] Figure 8 for Figure 7 Cross-section along AA direction;

[0030] Figure 9 A cross-sectional view of the oil filling tool provided in an embodiment of the present disclosure.

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 100, upper cover; 110, cavity; 120, oil filling hole; 130, first flange; 140, second boss;

[0033] 200, base; 210, first boss; 211, first end; 212, second end; 240, second flange;

[0034] 300, oil storage chamber; 310, main flow channel; 320, branch flow channel;

[0035] 400, oil inlet channel DETAILED DESCRIPTION

[0036] With the development of technology, oil seal filling has changed from manual application to automatic filling by equipment. The problem of uncontrollable oil filling amount during manual filling has been solved, which reduces labor intensity and improves production efficiency.

[0037] In the related art, the oil filling tool usually includes a base and an upper cover, and the upper cover and the base are detachably connected. The base has an oil inlet channel, and the upper cover is provided with multiple oil filling holes on the circumference of the upper cover, through which the oil seal is filled with oil.

[0038] However, the grease in the oil filling tool in the related technology is injected through the bottom oil inlet channel, which makes the oil filling pressure in the lower part of the oil filling chamber high, resulting in a larger amount of oil output from the oil filling hole near the bottom, while the amount of oil output from the oil filling hole at the top is smaller, which ultimately leads to the technical problem of unstable oil filling amount each time during continuous output.

[0039] Therefore, the oil injection tool provided by the embodiment of the present disclosure is characterized in that a first boss is arranged on the base, the first boss extends into the cavity, the oil storage cavity is formed between the first boss and the wall surface of the cavity, the cross section of the oil storage cavity has a feature that the height of the two ends along the center line of the base is greater than the height of the middle part along the center line of the base, the oil injection holes are arranged on the side wall of the cavity, the oil injection holes are in communication with the oil storage cavity, and the oil injection holes are uniformly distributed on the outer circumferential end of the oil storage cavity; and the center line of the oil inlet channel, the center line of the upper cover and the center line of the base coincide. By using the above structure, when the lubricating grease enters the oil storage cavity through the oil inlet channel, the oil flows from the middle position of the oil storage cavity to the outer circumferential end of the oil storage cavity, the lubricating grease is gradually and uniformly stressed when flowing at the middle position of the oil storage cavity, so that the lubricating grease can uniformly flow to the outer circumferential end of the oil storage cavity, and then the lubricating grease uniformly flows out of the oil injection holes on the side wall of the cavity, that is, the oil injection amount output by the oil injection holes is uniform. That is, because the lubricating grease enters the middle part of the oil storage cavity through the oil inlet channel, the lubricating grease can uniformly flow from the middle part to the outer circumferential end of the oil storage cavity due to the certain length of the middle part, so that the lubricating grease can uniformly flow out of the oil injection holes on the side wall of the cavity, thereby solving the technical problem that in the related art, the oil injection amount output by the oil injection holes close to the bottom is large, and the oil injection amount output by the oil injection holes at the upper part is small, and finally leading to unstable oil injection amount in continuous output.

[0040] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.

[0041] Reference Figures 1 to 9 The embodiment of the present disclosure provides an oil injection tool, which comprises an upper cover 100 and a base 200.

[0042] The upper cover 100 has a cavity 110, a plurality of oil injection holes 120 are arranged on the side wall of the cavity 110, and the plurality of oil injection holes 120 are uniformly arranged around the circumference of the side wall; the base 200 has a first boss 210, the first boss 210 extends into the cavity 110; the outer circumferential surface of the first end 211 of the first boss 210 is in close contact with the inner wall of the cavity 110, and the outer circumferential surface of the second end 212 of the first boss 210 has a gap with the inner wall of the cavity 110, so that the first boss 210 and the wall of the cavity 110 form an oil storage cavity 300, and the oil storage cavity 300 is in communication with the plurality of oil injection holes 120; the base 200 is provided with an oil inlet channel, the oil inlet channel is in communication with the oil storage cavity 300, and the center line of the oil inlet channel coincides with the center line of the upper cover 100 and the center line of the base 200.

[0043] By adopting the above structure, when the lubricating grease enters the oil storage cavity 300 through the oil inlet channel, the oil will flow from the middle position of the oil storage cavity 300 to the outer circumference of the oil storage cavity 300, and the lubricating grease will flow uniformly at the middle position of the oil storage cavity 300, so that the lubricating grease can flow uniformly to the outer circumference of the oil storage cavity 300, and then the lubricating grease can flow out uniformly through the oil injection holes 120 on the side wall of the cavity 110, that is, the output of the oil injection holes 120 is uniform. That is, because the lubricating grease enters the middle part of the oil storage cavity 300 through the oil inlet channel, and the middle part has a certain length, the injection pressure gradually becomes uniform, so that the lubricating grease can flow uniformly from the middle part to the outer circumference of the oil storage cavity 300, and then the lubricating grease can flow out uniformly through the oil injection holes 120 on the side wall of the cavity 110, thereby solving the technical problem that in the related art, the injection pressure at the lower part of the oil injection cavity is large, so that the output of the oil injection holes 120 near the bottom is large, and the output of the oil injection holes 120 at the upper part is small, and finally leading to unstable output of the lubricating grease.

[0044] Exemplarily, referring to Figures 2 to 5 The cavity 110 of the upper cover 100 has a second boss 140, and the second boss 140 is located on the top wall of the cavity 110. In this embodiment, the second boss 140 has an inverted circular table structure, that is, the width of the cross section of the second boss 140 gradually decreases from top to bottom, and by adopting this structure, the volume of the cavity 110 of the upper cover 100 is reduced.

[0045] In this embodiment, because the second boss 140 is positioned corresponding to the second end 212 of the first boss 210, the oil storage chamber 300 has an "H"-shaped structure. This allows the grease to be more evenly stressed in the middle of the oil storage chamber 300, allowing the grease to flow out more evenly. This further addresses the technical issue in the related art whereby the higher oil pressure in the lower portion of the oil filling chamber causes the oil filling hole 120 located near the bottom to output a larger amount of oil, while the oil filling hole 120 located above outputs a smaller amount of oil, ultimately resulting in unstable oil filling amounts during continuous output.

[0046] For example, continue to refer to Figure 3 A first flange 130 is provided on the outer side wall of the bottom end of the upper cover 100 , and the first flange 130 has a plurality of connection holes, which are evenly distributed on the first flange 130 , that is, the plurality of connection holes are evenly arranged on the first flange 130 around the center line of the upper cover 100 .

[0047] For example, continue to refer to Figure 5 The oil filling holes 120 are arranged in two rows in parallel on the inner wall of the cavity 110. The grease flows through the oil filling holes 120 to the required oil filling positions of the two rows of lips of the oil seal, thereby effectively improving the efficiency of oil filling.

[0048] For example, Figure 6 As shown, the base 200 may include a connecting portion, a first boss 210 and a second flange 240 .

[0049] The connecting portion is located at the bottom of the base 200, and its outer circumference is provided with threads for connecting to an external oil filling tool. A second flange 240 is provided between the connecting portion and the first boss 210, and multiple connecting holes are evenly arranged on the second flange 240. These connecting holes correspond to the connecting holes on the first flange 130 of the upper cover 100, and these connecting holes enable a detachable connection between the base 200 and the upper cover 100.

[0050] The second boss 140 is disposed opposite the first boss 210 and extends toward the first boss 210. The oil storage chamber 300 is formed between the first boss 210, the second boss 140, and the inner wall of the cavity 110. It can be understood that when the base 200 is connected to the upper cover 100, the first boss 210 extends into the cavity 110 of the upper cover 100, and the top end 212 of the first boss 210 is disposed opposite and parallel to the bottom end of the second boss 140. Simultaneously, the two rows of oil filling holes 120 are disposed side by side in the middle of the side wall of the oil storage chamber 300. By adopting the above structure, the oil storage chamber 300 has an "H"-shaped structure, so that the oil first enters the middle part of the cavity 110 through the oil inlet channel 400, and flows downward from the middle part to the two sides of the cavity 110 evenly, so that the oil can flow out more evenly through the oil filling hole 120 on the side wall of the cavity 110, further solving the technical problem in the related art that due to the high oil filling pressure in the lower part of the oil filling chamber, the oil filling hole 120 located near the bottom outputs a larger amount of oil, while the oil filling hole 120 located at the upper part outputs a smaller amount of oil, which ultimately leads to unstable oil filling amount each time during continuous output.

[0051] In addition, in this embodiment, the oil storage chamber 300 includes a main channel 310 and a branch channel 320 that are interconnected. The main channel 310 is formed between the first boss 210 and the second boss 140; the branch channel 320 is arranged around the periphery of the main channel 310 and is formed between the inner wall of the cavity 110, the side wall of the first boss 210 and the side wall of the second boss 140.

[0052] In this embodiment, the structure of the second end 212 of the first boss 210 is consistent with that of the second boss 140, resulting in a symmetrical cross-sectional structure of the oil storage chamber 300 along the centerline of the oil inlet passage 400. Furthermore, the two rows of oil injection holes 120 are positioned in the middle of the sidewalls of the cavity 110. In other words, the oil injection holes 120 are located in the middle of the flow channel 320. This central location of the oil injection holes 120 ensures a more even distribution of grease, allowing for a more uniform flow. This further addresses the technical issue in related art where high oil pressure in the lower portion of the oil injection chamber results in unstable oil injection volume.

[0053] Exemplarily, the gap between the oil filling holes 120 is 1.2 mm-1.5 mm.

[0054] Based on the above-disclosed embodiment, by providing a first boss 210 on the base 200 and extending the first boss 210 into the cavity 110, an oil storage chamber 300 is formed between the first boss 210 and the wall of the cavity 110. This results in the oil storage chamber 300 having a height at both ends along the centerline of the base 200 greater than the height of its middle portion along the centerline of the base 200, resulting in an "H"-shaped structure. Furthermore, since the oil injection hole 120 is provided on the sidewall of the cavity 110, that is, the oil injection hole 120 is provided corresponding to the two ends of the oil storage chamber 300, and the centerlines of the oil inlet channel 400, the upper cover 100, and the base 200 coincide with each other. By adopting the above structure, when oil enters the oil storage chamber 300 through the oil inlet channel 400, the oil will flow evenly toward both ends of the oil storage chamber 300 through the middle position of the "H"-shaped oil storage chamber 300, thereby allowing the oil to evenly flow out through the oil injection holes 120 on the side wall of the oil injection chamber. In other words, because the oil first enters the middle portion of the cavity 110 through the oil inlet channel 400 and evenly flows downward from the middle portion to the positions on both sides of the cavity 110, the oil can evenly flow out through the oil injection holes 120 on the side wall of the cavity 110. This solves the technical problem in the related art that due to the high oil injection pressure in the lower portion of the oil injection chamber, the oil injection hole 120 near the bottom outputs a larger amount of oil, while the oil injection hole 120 located at the upper portion outputs a smaller amount of oil, ultimately resulting in unstable oil injection amount during continuous output.

[0055] In the description of the embodiments of the present disclosure, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do 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 therefore cannot be understood as a limitation on the embodiments of the present disclosure.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first", "second" or "third" may explicitly or implicitly include at least one of the features. In the description of the embodiments of the present disclosure, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the embodiments of the present disclosure, unless specifically defined and limited otherwise, the terms "mount", "connect", "connection", "fixed", and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0058] In the embodiments of the present disclosure, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature can be below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0059] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0060] Although the embodiments of the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the embodiments of the present disclosure, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the embodiments of the present disclosure.

Claims

1. An oil filling tool, characterized in that: include, An upper cover having a cavity, a side wall of the cavity being provided with a plurality of oil injection holes, the plurality of oil injection holes being evenly arranged around the circumference of the side wall; The base has a first boss, and the first boss extends into the cavity; the outer circumferential surface of the first end of the first boss is in contact with the inner wall of the cavity, and there is a gap between the outer circumferential surface of the second end and the inner wall of the cavity, and an oil storage cavity is formed between the first boss and the wall surface of the cavity, and the oil storage cavity is connected with the multiple oil filling holes; an oil inlet channel is provided on the base, and the oil inlet channel is connected with the oil storage cavity, and the center line of the oil inlet channel coincides with the center line of the upper cover and the center line of the base.

2. The oil filling tool according to claim 1, characterized in that: The cavity of the upper cover has a second boss, which is located on the top wall of the cavity. The second boss is arranged opposite to the first boss and extends toward the first boss. The oil storage cavity is formed between the first boss, the second boss and the inner wall of the cavity.

3. The oil filling tool according to claim 2, characterized in that: The oil storage cavity includes a main channel and a branch channel that are interconnected. The main channel is formed between the first boss and the second boss. The branch channel is arranged around the outer periphery of the main channel and is formed between the inner wall of the cavity, the side wall of the first boss and the side wall of the second boss.

4. The oil filling tool according to any one of claims 1 to 3, characterized in that: The oil storage chamber is symmetrically arranged along the center line of the oil inlet channel.

5. The oil filling tool according to claim 2, characterized in that: The top end surface of the first boss and the bottom end surface of the second boss are arranged in parallel.

6. The oil filling tool according to claim 3, characterized in that: The oil filling holes are arranged in two rows and in parallel on the inner wall of the cavity, and the oil filling holes are communicated with the branch channel.

7. The oil filling tool according to any one of claims 1 to 3, characterized in that: The upper cover and the base are connected via screws.

8. The oil filling tool according to claim 7, characterized in that: The second end of the first boss is in a frustum structure.

9. The oil filling tool according to claim 6, characterized in that: The width of the upper end portion of the branch channel in the horizontal direction is greater than the width of the lower end portion of the branch channel.

10. The oil filling tool according to claim 7, characterized in that: The gap between the oil filling holes is 1.2mm-1.5mm.

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