Fixing structure and filter

Abstract

The invention provides a fixing structure and a filter, and relates to the technical field of filters, the fixing structure comprises a connecting piece and a clamping piece matched with the connecting piece, the connecting piece comprises a clamping ring, a first extension plate connected with one end of the clamping ring, and a second extension plate connected with the other end of the clamping ring, a clamping space is defined by the clamping ring, the first extension plate and the second extension plate and is used for clamping and fixing one axial end of the filter; the clamping piece is used for axially limiting the filter and comprises a first clamping part and a second clamping part connected with the first clamping part, the first clamping part is provided with a first clamping groove, the first clamping groove is used for being connected with an annular protrusion in the circumferential direction of the filter in a clamped mode, and the second clamping part is connected with the first clamping part to form a second clamping groove. The opening direction of the second clamping groove is opposite to the opening direction of the first clamping groove, and the second clamping groove is used for being connected with the clamping ring in a clamping mode. The filter can be limited in multiple directions, and the filter is effectively prevented from being separated under complex working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and particularly to a fixing structure and a filter. Background Art

[0002] In the power system of a natural gas pickup truck, the filter is a key component to ensure the stable operation of the gas supply system. Its function is to filter solid or liquid impurities in the natural gas to ensure that the gas entering the engine is clean and pure. To achieve a multi-stage filtering effect, usually a filter is respectively arranged on the high-pressure pipeline and the low-pressure pipeline connected to the engine. Among them, because the low-pressure pipeline is close to the air inlet of the engine, the filter on it will be directly installed on the engine.

[0003] At present, the fixing method of the filter on the engine mostly adopts a single wrapping connection structure. Specifically, symmetric clamping rings are used to circumferentially wrap the filter, and the clamping force generated by the elastic deformation of the clamping rings is used to achieve fixation. However, the limitation of this connection structure on the filter is only limited to the radial direction. When the filter is subjected to multi-directional forces generated by the continuous high-frequency vibration of the engine, effective restraint cannot be achieved, and axial movement or shaking is likely to occur, seriously threatening the operation safety of the engine system. Therefore, there is an urgent need to develop a new type of fixing structure. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a fixing structure and a filter, aiming to solve the technical problem in the prior art that the fixing method of the filter on the engine mostly adopts a single wrapping connection structure, the limitation of the filter is only limited to the radial direction, when the filter is subjected to multi-directional forces generated by the continuous high-frequency vibration of the engine, effective restraint cannot be achieved, and axial movement or shaking is likely to occur, seriously threatening the operation safety of the engine system.

[0005] One aspect of the present invention lies in providing a fixing structure, including a connecting member and a clamping member adapted to the connecting member. The connecting member is used to install the filter at a preset installation position on the engine. The connecting member includes a clamping ring, a first extension plate connected to one end of the clamping ring, and a second extension plate connected to the other end of the clamping ring. The clamping ring, the first extension plate and the second extension plate enclose a clamping space for clamping and fixing one end of the filter axially. The clamping member is used to axially limit the filter. The clamping member includes a first clamping portion and a second clamping portion connected to the first clamping portion. The first clamping portion is provided with a first clamping groove for clamping with a circumferential annular protrusion of the filter. The second clamping portion and the first clamping portion are connected to form a second clamping groove. The notch direction of the second clamping groove is opposite to the notch direction of the first clamping groove. The second clamping groove is used to clamp with the clamping ring.

[0006] In addition, the fixing structure according to the present invention may also have the following additional technical features: Furthermore, the first card slot and the second card slot are both U-shaped slots, and the slot width of the second card slot is greater than the slot width of the first card slot.

[0007] Furthermore, the clamping member also includes a limiting plate portion, and the limiting plate portion is vertically extended from one end of the second clamping portion away from the first clamping portion toward the direction of the first clamping portion, and the limiting plate portion is used to abut against the circumferential outer wall of the clamp ring.

[0008] Furthermore, the connecting member further includes a first fixing block, the end portion of the first extension plate is provided with the first fixing block, and the first fixing block is provided with a first through hole.

[0009] Furthermore, the connecting member further comprises a second fixing block, the end portion of the second extension plate is provided with the second fixing block, the second fixing block and the first fixing block are parallel to each other, and a gap is provided between the second fixing block and the first fixing block; A second through hole is provided on the second fixing portion, and a center line of the second through hole coincides with a center line of the first through hole.

[0010] Furthermore, the fixing structure further includes a connecting bolt and a connecting nut adapted to the connecting bolt, and the first through hole and the second through hole are adapted to the connecting bolt respectively for installing the connecting bolt.

[0011] Furthermore, the connecting bolt includes a nut portion, an abutting portion connected to the nut portion, and a screw portion connected to the abutting portion, and a side of the abutting portion facing away from the nut portion is a planar structure.

[0012] Furthermore, the connecting nut includes a nut body and a convex ring portion extending vertically outward in the circumferential direction from one end of the nut body, and the nut body is provided with an internal threaded hole adapted to the screw portion.

[0013] Furthermore, the fixing structure further includes an elastic buffer pad, and the elastic buffer pad is arranged in the clamping space.

[0014] Another aspect of the present invention is to provide a filter, including a filter body and the above-mentioned fixing structure, wherein the filter body is provided with an annular protrusion, the connecting piece is sleeved on one axial end of the filter body, the first clamping portion is clamped with the annular protrusion, and the side of the second clamping portion facing away from the clamping ring abuts against the outer wall of the filter body.

[0015] Compared with the prior art, the beneficial effects of the fixing structure and the filter of the present invention are as follows: The filter is firmly fixed on the engine by setting a connecting member, and a clamping member is added to axially limit the filter. Specifically, the filter is clamped by a clamping ring in the connecting member, and the connection between the filter and the engine is realized by the cooperation of a connecting bolt, a connecting nut, a first fixing block and a second fixing block. Moreover, the first clamping portion and the second clamping portion in the clamping member cooperate to form clamping grooves with different orientations and widths, which are respectively clamped with the annular protrusion and the clamping ring on the filter, realizing multi-directional limitation of the filter, completely changing the limitation of the traditional fixing method that only relies on single-direction fixing, effectively preventing the filter from detaching under complex working conditions, and greatly improving the reliability and stability of the fixing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the fixing structure in the first embodiment of the present invention; Figure 2 is a schematic structural diagram of the connecting member in the first embodiment of the present invention; Figure 3 is a schematic structural diagram of the clamping member in the first embodiment of the present invention; Figure 4 is a schematic structural diagram of the filter in the first embodiment of the present invention; Figure 5 is a schematic structural diagram of the fixing structure in the second embodiment of the present invention; Figure 6 is a schematic structural diagram of the clamping member in the second embodiment of the present invention; Figure 7 is a schematic structural diagram of the filter in the second embodiment of the present invention.

[0017] Among them, the above-mentioned drawings include the following reference numerals: 10 - connecting member; 11 - clamping ring; 12 - first extension plate; 13 - second extension plate; 14 - first fixing block; 15 - second fixing block; 21 - connecting bolt; 211 - nut portion; 212 - abutting portion; 213 - screw portion; 22 - connecting nut; 221 - nut body; 222 - convex ring portion; 30 - elastic buffer member; 40 - clamping member; 41 - first clamping portion; 42 - second clamping portion; 43 - limiting plate portion; 401 - first clamping groove; 402 - second clamping groove; 51 - filter body; 511 - annular protrusion.

[0018] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION OF THE INVENTION

[0019] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Example 1 See also Figures 1 to 4 , shown is a fixing structure and filter in a first embodiment of the present invention, wherein the fixing structure includes a connector 10 and a clamping member 40 adapted to the connector 10, the connector 10 being used to mount the filter at a preset mounting position on the engine, the connector 10 including a clamping ring 11, a first extension plate 12 connected to one end of the clamping ring 11, and a second extension plate 13 connected to the other end of the clamping ring 11, the clamping ring 11, the first extension plate 12, and the second extension plate 13 together forming a clamping space for clamping and fixing one axial end of the filter. As a specific example, in this embodiment, the central angle of the clamping ring 11 is 270°, one end of the clamping ring 11 has a first extension plate 12 extending horizontally along its radial direction, and the other end of the clamping ring 11 has a second extension plate 13 extending horizontally along its radial direction, that is, the first extension plate 12 and the second extension plate 13 are perpendicular to each other.

[0023] Furthermore, the connecting member 10 also includes a first fixing block 14 and a second fixing block 15. The first fixing block 14 is provided at the end of the first extension plate 12, and the first fixing block 14 is provided with a first through hole; the second fixing block 15 is provided at the end of the second extension plate 13, the second fixing block 15 and the first fixing block 14 are parallel to each other, and a gap is provided between the second fixing block 15 and the first fixing block 14, and a second through hole is provided on the second fixing portion, and the center line of the second through hole coincides with the center line of the first through hole.

[0024] The fixing structure of the present application also includes a connecting bolt 21 and a connecting nut 22 adapted to the connecting bolt 21. The first through hole and the second through hole are respectively adapted to the connecting bolt 21 for installing the connecting bolt 21. Specifically, in this embodiment, the connecting bolt 21 includes a nut portion 211, an abutting portion 212 connected to the nut portion 211, and a screw portion 213 connected to the abutting portion 212. The side of the abutting portion 212 facing away from the nut portion 211 is a planar structure to ensure a tight fit during abutment. Furthermore, the connecting nut 22 includes a nut body 221 and a convex ring portion 222 extending vertically outward from one end of the nut body 221 in a circumferential direction. The nut body 221 is provided with an internal threaded hole adapted to the screw portion 213. In actual use, the clamping ring 11 is sleeved on one axial end of the filter, and the circumferential inner wall of the clamping ring 11 is tightly fitted with the circumferential inner wall of the filter. Then, the screw portion 213 of the connecting bolt 21 is sequentially passed through the second through hole on the second fixing block 15, the preset mounting hole of the preset mounting position on the engine, and the first through hole on the first fixing block 14, and the connecting nut 22 is installed and tightened, so that the abutting portion 212 of the connecting bolt 21 is tightly fitted with the surface of the second fixing block 15, and the surface of the convex ring portion 222 of the connecting nut 22 is tightly fitted with the surface of the first fixing block 14, so as to achieve firm fixation of the filter on the engine.

[0025] Furthermore, the fixing structure of the present application also includes an elastic buffer pad, which is arranged in the clamping space. The setting of the elastic buffer pad can not only play a role in buffering and shock absorption between the filter and the connector 10, reducing the impact of engine vibration on the stability of the filter installation, but also fill the small gap between the connector 10 and the filter, further enhancing the fixing effect. As a specific example, in this embodiment, the elastic buffer 30 includes a buffer portion and a connecting portion provided at both ends of the buffer portion in the width direction. The connecting portion and the buffer portion are connected to form a mounting groove. The mounting groove is a U-shaped structure, and the groove width of the mounting groove is consistent with the ring thickness of the clamp ring 11. The connection between the elastic buffer pad and the connector 10 is achieved by respectively clamping the two axial ends of the clamp ring 11 into the two mounting grooves on the elastic buffer pad. In actual use, the elastic buffer 30 can be made of rubber material.

[0026] The fixing structure of the present application also includes a clamping member 40, which is used to axially limit the filter, effectively avoiding the risk of the filter moving axially and detaching from the connecting member 10 due to factors such as engine vibration. Specifically, the clamping member 40 includes a first clamping portion 41 and a second clamping portion 42 connected to the first clamping portion 41. The first clamping portion 41 is provided with a first clamping groove 401, which is used to clamp with the annular protrusion 511 on the circumference of the filter. The second clamping portion 42 is connected to the first clamping portion 41 to form a second clamping groove 402. The notch of the second clamping groove 402 is oriented in the opposite direction to the notch of the first clamping groove 401, and the second clamping groove 402 is used to clamp with the clamp ring 11.

[0027] Furthermore, both the first card slot 401 and the second card slot 402 are U-shaped slots, and the slot width of the second card slot 402 is greater than the slot width of the first card slot 401 .

[0028] The present application also provides a filter, which includes a filter body 51 and the fixing structure in the above embodiment. The filter body 51 is provided with an annular protrusion 511, and the connecting member 10 is sleeved on one axial end of the filter body 51. The first clamping portion 41 is clamped with the annular protrusion 511, and the side of the second clamping portion 42 facing away from the clamping ring 11 abuts against the outer wall of the filter body 51.

[0029] Embodiment 2 See also Figures 5 to 7 , shown is a fixing structure and a filter in a second embodiment of the present invention. The difference between this embodiment and the fixing structure and the filter in the first embodiment is that the clamping member 40 in this embodiment further includes a limiting plate portion 43, and the end of the second clamping portion 42 away from the first clamping portion 41 extends vertically toward the direction of the first clamping portion 41 with a limiting plate portion 43. The limiting plate portion 43 is used to abut against the circumferential outer wall of the clamping ring 11, further limiting the movement of the clamping ring 11, enhancing the connection strength and stability between the clamping member 40 and the connecting member 10, limiting the filter from multiple directions, and preventing loosening between the connecting member 10 and the clamping member 40 under working conditions such as engine vibration, thereby improving the fixing effect of the entire fixing structure on the filter.

[0030] In summary, the beneficial effects of the fixing structure and the filter in the above embodiments of the present invention are as follows: The filter is firmly fixed on the engine by setting a connecting member, and a clamping member is added to axially limit the filter. Specifically, the filter is clamped by the clamping ring in the connecting member, and the connection between the filter and the engine is achieved by the cooperation of the connecting bolt, the connecting nut, the first fixing block and the second fixing block. Moreover, the first clamping portion and the second clamping portion in the clamping member cooperate to form clamping grooves with different orientations and widths, which are respectively clamped with the annular protrusion and the clamping ring on the filter, realizing multi-directional limitation of the filter, completely changing the limitation of the traditional fixing method that only relies on a single direction for fixing, effectively preventing the filter from detaching under complex working conditions, and greatly improving the reliability and stability of the fixing structure.

[0031] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0032] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the present invention application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention application shall be subject to the appended claims.

Claims

1. A fixing structure, characterized in that, The filter comprises a connecting member and a clamping member adapted to the connecting member, wherein the connecting member is used to install the filter at a preset installation position of the engine, the connecting member comprises a clamping ring, a first extension plate connected to one end of the clamping ring, and a second extension plate connected to the other end of the clamping ring, the clamping ring, the first extension plate and the second extension plate together forming a clamping space for clamping and fixing one axial end of the filter; The clamping member is used to limit the filter axially, and the clamping member includes a first clamping portion and a second clamping portion connected to the first clamping portion. The first clamping portion is provided with a first clamping groove, and the first clamping groove is used to clamp with the annular protrusion circumferentially of the filter. The second clamping portion is connected to the first clamping portion to form a second clamping groove. The notch of the second clamping groove is opposite to the notch of the first clamping groove, and the second clamping groove is used to clamp with the clamp ring.

2. The fixed structure according to claim 1, characterized in that The first card slot and the second card slot are both U-shaped slots, and the slot width of the second card slot is greater than the slot width of the first card slot.

3. The fixed structure according to claim 1, wherein The clamping member also includes a limiting plate portion, and the limiting plate portion is vertically extended from one end of the second clamping portion away from the first clamping portion toward the direction of the first clamping portion, and the limiting plate portion is used to abut against the circumferential outer wall of the clamp ring.

4. The fixing structure according to claim 1, characterized in that, The connecting member further includes a first fixing block. The end portion of the first extension plate is provided with the first fixing block, and the first fixing block is provided with a first through hole.

5. The fixing structure according to claim 4, characterized in that, The connecting member further includes a second fixing block, the end of the second extension plate is provided with the second fixing block, the second fixing block and the first fixing block are parallel to each other, and a gap is provided between the second fixing block and the first fixing block; A second through hole is provided on the second fixing portion, and a center line of the second through hole coincides with a center line of the first through hole.

6. The fixing structure according to claim 5, characterized in that, The fixing structure further includes a connecting bolt and a connecting nut adapted to the connecting bolt. The first through hole and the second through hole are adapted to the connecting bolt respectively for installing the connecting bolt.

7. The fixing structure according to claim 6, wherein The connecting bolt includes a nut portion, an abutting portion connected to the nut portion, and a screw portion connected to the abutting portion, and a side of the abutting portion facing away from the nut portion is a planar structure.

8. The fixing structure according to claim 7, characterized in that, The connecting nut includes a nut body and a convex ring portion extending vertically outward in the circumferential direction from one end of the nut body. The nut body is provided with an internal threaded hole adapted to the screw portion.

9. The fixing structure according to claim 1, characterized in that, The fixing structure further includes an elastic buffer pad, which is arranged in the clamping space.

10. A filter, characterized in that, The filter includes a filter body and a fixing structure according to any one of claims 1 to 9, wherein an annular protrusion is provided on the filter body, the connecting piece is sleeved on one axial end of the filter body, the first clamping portion is clamped with the annular protrusion, and the side of the second clamping portion facing away from the clamping ring abuts against the outer wall of the filter body.

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