Sealed connection structure and pressure gauge

Abstract

The present invention provides a sealing connection structure and a pressure gauge, wherein the sealing connection structure is provided with a mounting groove for installing an elastic tube on a main body, the first end of the elastic tube is arranged in the mounting groove and the first end is communicated with a first interface arranged on the main body; a first sealing component for fixing the first end in the mounting groove is arranged in the first end of the elastic tube, and a second sealing component is also arranged at a position corresponding to the first sealing component in the mounting groove, the second sealing component is used to seal the connection between the first end and the first interface, and in addition, the second sealing component is also used to seal the gap between the elastic tube and the first sealing component. Therefore, the sealing connection structure of the embodiment of the present invention can realize the sealing connection between the elastic tube and the main body without the aid of welding or bonding, thereby improving the automation level of pressure gauge production and reducing the production cost of the pressure gauge.

Description

Technical Field

[0001] The embodiments of the present invention relate to but are not limited to the technical field of pressure measuring equipment, and in particular to a sealing connection structure and a pressure gauge. Background Art

[0002] The elastic tube is a commonly used elastic sensitive element in the manufacture of pressure gauges. Its function is to produce elastic deformation under the action of pressure, and then transmit the deformation to the pointer through the conversion mechanism of the pressure gauge movement, causing the pointer to rotate to display the pressure. In the related art, the elastic tube is usually welded to achieve a sealed connection with the main body of the pressure gauge. Since the process of welding the elastic tube and the main body of the pressure gauge is relatively complicated, the complexity of the pressure gauge production is increased, which is not conducive to improving the automation level of the pressure gauge production and increases the production cost of the pressure gauge. Summary of the invention

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a sealing connection structure and a pressure gauge, which can achieve a sealing connection between an elastic tube and a main body without welding or bonding, thereby improving the automation level of pressure gauge production and reducing the production cost of the pressure gauge.

[0005] A sealed connection structure according to a first aspect of the present invention includes:

[0006] The main body is provided with a mounting groove, the mounting groove is used to install the elastic tube; the mounting groove is provided with a first interface, the main body is provided with a second interface, a first channel is provided in the main body, the first interface and the second interface are communicated through the first channel, the first end of the elastic tube is provided in the mounting groove, and the first end is communicated with the first interface;

[0007] A first sealing assembly is disposed in the first end, and the first sealing assembly is used to fix the first end in the mounting groove;

[0008] A second sealing component is arranged in the installation groove, and the second sealing component is connected to the first end. The installation position of the second sealing component corresponds to the installation position of the first sealing component. The second sealing component is used to seal the connection between the first end and the first interface, and the second sealing component is also used to seal the gap between the elastic tube and the first sealing component.

[0009] The sealed connection structure according to the first aspect of the present invention has at least the following beneficial effects:

[0010] The sealing connection structure of the embodiment of the present invention is provided with an installation groove for installing an elastic tube on the main body, the first end of the elastic tube is arranged in the installation groove and the first end is connected with a first interface arranged on the main body; a first sealing component for fixing the first end in the installation groove is arranged in the first end of the elastic tube, and a second sealing component is also arranged at a position corresponding to the first sealing component in the installation groove, the second sealing component is used to seal the connection between the first end and the first interface, and in addition, the second sealing component is also used to seal the gap between the elastic tube and the first sealing component. Therefore, the sealing connection structure of the embodiment of the present invention can realize the sealing connection between the elastic tube and the main body without the aid of welding or bonding, thereby improving the automation level of pressure gauge production and reducing the production cost of the pressure gauge.

[0011] It is understandable that the mounting groove is provided with a receiving cavity for receiving the second sealing component at the first interface, and the receiving cavity is interference-fitted with the second sealing component. By providing the receiving cavity, the second sealing component which is interference-fitted with the receiving cavity can better seal the connection between the first end and the first interface, and at the same time, the receiving cavity can also fix the second sealing component to avoid sealing failure due to looseness of the second sealing component.

[0012] It is understandable that the second sealing assembly includes a sealing ring, which is arranged in the mounting groove and located between the first end and the first interface. The sealing ring arranged between the first end and the first interface can abut against the tube body of the first end of the elastic tube and the first interface, thereby sealing the connection between the first end and the first interface.

[0013] It can be understood that the sealing ring is sleeved on the first end, and the installation position of the sealing ring corresponds to the installation position of the first sealing component. By sleeved the sealing ring on the body of the elastic tube at a position corresponding to the first sealing component, the sealing ring can squeeze the body of the elastic tube in contact with itself, so that the inner wall of the part of the body abuts against the first sealing component, and the outer wall of the part of the body abuts against the sealing ring, so that the connection between the first end and the first interface is sealed, and the gap between the elastic tube and the first sealing component is sealed, thereby improving the sealing effect.

[0014] It is understandable that the installation groove is provided with a first tenon for fixing the elastic tube; the first sealing component is provided with a first slot for fixing the elastic tube corresponding to the first tenon. By providing the first tenon in the installation groove and providing the first slot on the first sealing component corresponding to the first tenon, the elastic tube and the first sealing component can be fixed in the installation groove under the action of the first slot and the first tenon, thereby improving the stability of the connection between the elastic tube and the main body and improving the sealing effect.

[0015] It is understandable that the installation groove is provided with a second groove for fixing the elastic tube; the first sealing component is provided with a second tenon for fixing the elastic tube corresponding to the second groove. By providing the second groove in the installation groove and providing the second tenon on the first sealing component corresponding to the second groove, the elastic tube and the first sealing component can be fixed in the installation groove under the action of the second groove and the second tenon, thereby improving the stability of the connection between the elastic tube and the main body and improving the sealing effect.

[0016] It is understandable that the first sealing component is provided with a second channel for connecting the elastic tube and the first interface. By providing the second channel for connecting the elastic tube and the first interface in the first sealing component, the elastic tube can be connected to the first interface through the second channel when the tube body abuts against the first sealing component, thereby improving the sealing effect.

[0017] It can be understood that the main body is provided with claws for fixing the main body.

[0018] It is understandable that the first sealing component is interference fit with the elastic tube. By providing the first sealing component that is interference fit with the elastic tube, the gap between the elastic tube and the first sealing component can be sealed on the one hand, and the first end of the elastic tube can be fixed more firmly in the mounting groove on the other hand.

[0019] The pressure gauge according to the second embodiment of the present invention includes the sealing connection structure of the first embodiment.

[0020] The pressure gauge according to the second aspect of the present invention has at least the following beneficial effects:

[0021] The pressure gauge of the second embodiment of the present invention includes a sealing connection structure, which is used to seal the connection between the bar tube of the pressure gauge and the main body of the pressure gauge. The sealing connection structure is provided with a mounting groove for mounting the bar tube on the main body, the first end of the bar tube is arranged in the mounting groove and the first end is connected with the first interface arranged on the main body; the first end of the bar tube is provided with a first sealing component for fixing the first end in the mounting groove, and the position of the mounting groove corresponding to the first sealing component is also provided with a second sealing component, the second sealing component is used to seal the connection between the first end and the first interface, and in addition, the second sealing component is also used to seal the gap between the bar tube and the first sealing component, so the pressure gauge of the embodiment of the present invention can achieve a sealed connection between the bar tube and the main body of the pressure gauge without the aid of welding or bonding, thereby improving the automation level of the pressure gauge production and reducing the production cost of the pressure gauge.

[0022] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0024] Figure 1 is a schematic diagram of a sealed connection structure provided by an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 An exploded schematic diagram of the sealing connection structure shown;

[0026] Figure 3 yes Figure 2 A cross-sectional view of a sealed connection structure is shown.

[0027] Figure numerals: sealing connection structure 100, main body 101, mounting groove 102, elastic tube 103, sealing ring 104, first tenon 105, second interface 106, claw 107, first end 108, sealing block 200, first groove 201, accommodating chamber 202, first channel 300, second channel 301, first interface 302. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] An embodiment of the present invention provides a sealing connection structure and a pressure gauge, wherein the sealing connection structure is provided with an installation groove for installing an elastic tube on a main body, the first end of the elastic tube is arranged in the installation groove and the first end is connected to a first interface arranged on the main body; a first sealing component for fixing the first end in the installation groove is arranged in the first end of the elastic tube, and a second sealing component is also arranged at a position corresponding to the first sealing component in the installation groove, the second sealing component is used to seal the connection between the first end and the first interface, and in addition, the second sealing component is also used to seal the gap between the elastic tube and the first sealing component. Therefore, the sealing connection structure of the embodiment of the present invention can realize a sealed connection between the elastic tube and the main body without the aid of welding or bonding, thereby improving the automation level of pressure gauge production and reducing the production cost of the pressure gauge.

[0033] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0034] like Figure 1 As shown, Figure 1 FIG. 1 is a schematic diagram of a sealed connection structure 100 provided in accordance with an embodiment of the present invention.

[0035] exist Figure 1 In the example, the sealing connection structure 100 of the embodiment of the present invention includes a main body 101, and the main body 101 is provided with a mounting groove 102 for mounting an elastic tube 103. The first end 108 of the elastic tube 103 is arranged in the mounting groove 102 and communicated with the main body 101.

[0036] It can be understood that the sealing connection structure 100 of the embodiment of the present invention also includes a second sealing component, which is arranged in the installation groove 102 and connected to the first end 108. The second sealing component is used to seal the connection between the first end 108 and the first interface 302.

[0037] Specifically, refer to Figure 1The second sealing structure of the embodiment of the present invention can adopt a sealing ring 104, which is arranged in the installation groove 102 and connected to the first end 108 of the elastic tube 103, and the inner diameter of the sealing ring 104 is smaller than the diameter of the elastic tube 103. The sealing ring 104 is used to seal the connection between the first end 108 and the main body 101.

[0038] It should be noted that the sealing ring 104 may be a rubber sealing ring 104 or a silicone sealing ring 104 , and the embodiment of the present invention does not specifically limit the material of the sealing ring 104 .

[0039] Reference Figure 1 A first tenon 105 for fixing the elastic tube 103 is provided in the installation groove 102. By providing the first tenon 105, the elastic tube 103 can be more firmly fixed in the installation groove 102, thereby avoiding sealing failure caused by shaking of the elastic tube 103.

[0040] It should be noted that, there may be one or more first tenons 105 , and they may be arranged horizontally or vertically. The embodiment of the present invention does not specifically limit the number and direction of the first tenons 105 .

[0041] Reference Figure 1 The main body 101 is provided with a second interface 106 that can communicate with the elastic tube 103 , and claws 107 connected to the main body 101 are also provided on the upper and lower sides of the second interface 106 .

[0042] It is understandable that the mounting groove 102 is provided with a first interface 302 , the main body 101 is provided with a second interface 106 , the first interface 302 is communicated with the second interface 106 , the first end 108 of the elastic tube 103 is provided in the mounting groove 102 , and the first end 108 is communicated with the first interface 302 .

[0043] Reference Figure 2 , Figure 2 yes Figure 1 An exploded schematic diagram of the sealing connection structure 100 is shown.

[0044] exist Figure 2 In the example, the sealing connection structure 100 of the embodiment of the present invention further includes a first sealing component, which is disposed in the first end 108 and is used to fix the first end 108 in the mounting groove 102.

[0045] Specifically, the second sealing component is connected to the first end 108, and the installation position of the second sealing component corresponds to the installation position of the first sealing component. The second sealing component is used to seal the connection between the first end 108 and the first interface 302, and the second sealing component is also used to seal the gap between the elastic tube 103 and the first sealing component.

[0046] Since the main body 101 is provided with a mounting groove 102 for mounting the elastic tube 103, the first end 108 of the elastic tube 103 is arranged in the mounting groove 102 and the first end 108 is communicated with the first interface 302 arranged on the main body 101; the first end 108 of the elastic tube 103 is provided with a first sealing component for fixing the first end 108 in the mounting groove 102, and a second sealing component is also provided at a position corresponding to the first sealing component in the mounting groove 102, and the second sealing component is used to seal the connection between the first end 108 and the first interface 302. In addition, the second sealing component is also used to seal the gap between the elastic tube 103 and the first sealing component. Therefore, the sealing connection structure 100 of the embodiment of the present invention can realize the sealed connection between the elastic tube 103 and the main body 101 without the aid of welding or bonding, thereby improving the automation level of the pressure gauge production and reducing the production cost of the pressure gauge.

[0047] Specifically, refer to Figure 2 The first sealing assembly may adopt a sealing block 200 , which is connected to the first end 108 . The installation position of the sealing block 200 corresponds to the installation position of the first sealing assembly. The sealing block 200 is used to seal the connection between the first end 108 and the first interface 302 .

[0048] It is understandable that the first sealing component is interference fit with the elastic tube 103. By providing the first sealing component that is interference fit with the elastic tube 103, on the one hand, the gap between the elastic tube 103 and the first sealing component can be sealed, and on the other hand, the first end of the elastic tube 103 can be fixed in the installation groove 102 more firmly.

[0049] Reference Figure 2 The mounting groove 102 is provided with a receiving cavity 202 for receiving the sealing ring 104 at the first interface 302, and the receiving cavity 202 is interference-fitted with the sealing ring 104. By providing the receiving cavity 202, the sealing ring 104 interference-fitted with the receiving cavity 202 can better seal the connection between the first end 108 and the first interface 302, and at the same time, the receiving cavity 202 can also fix the sealing ring 104, avoiding sealing failure caused by loosening of the sealing ring 104.

[0050] Specifically, the sealing ring 104 is sleeved on the first end 108, and the installation position of the sealing ring 104 corresponds to the installation position of the first sealing assembly. By sleeve-fitting the sealing ring 104 on the body of the elastic tube 103 at a position corresponding to the first sealing assembly, the sealing ring 104 can squeeze the body of the elastic tube 103 in contact with itself, so that the inner wall of the part of the body abuts against the first sealing assembly, and the outer wall of the part of the body abuts against the sealing ring 104, so that the connection between the first end 108 and the first interface 302 is sealed, and the gap between the elastic tube 103 and the first sealing assembly is sealed, thereby improving the sealing effect.

[0051] Specifically, the sealing ring 104 can be partially sleeved on the edge of the first end 108 of the elastic tube 103, so as to achieve a better interference fit with the accommodating cavity 202 while sealing the gap between the elastic tube 103 and the first sealing assembly, so that the sealing ring 104 can better seal the connection between the first end 108 and the first interface 302.

[0052] Reference Figure 2 , the installation groove 102 is provided with a first tenon 105 for fixing the elastic tube 103; the sealing block 200 is provided with a first slot 201 for fixing the elastic tube 103 corresponding to the first tenon 105. By providing the first tenon 105 in the installation groove 102 and providing the first slot 201 on the sealing block 200 corresponding to the first tenon 105, the elastic tube 103 and the sealing block 200 can be fixed in the installation groove 102 under the action of the first slot 201 and the first tenon 105, thereby improving the stability of the connection between the elastic tube 103 and the main body 101 and improving the sealing effect.

[0053] Reference Figure 2 Two first latches 105 are respectively provided on two opposite side walls of the mounting groove 102, and the sealing block 200 is also provided with two first latch grooves 201 corresponding to the two first latches 105 on the mounting groove 102, so that the sealing block 200 and the elastic tube 103 can be better fixed.

[0054] It is understandable that the sealing block 200 is interference fit with the elastic tube 103, and the first groove 201 on the sealing block 200 extends from the leftmost end to the rightmost end of the sealing block 200, thereby improving the effect of sealing the gap between the elastic tube 103 and the first sealing assembly.

[0055] It should be noted that the first tenon 105 and the first slot 201 matching the first tenon 105 can be provided with one or more, and can be arranged horizontally or vertically. The embodiment of the present invention does not specifically limit the number and direction of the first tenon 105 and the first slot 201 matching the first tenon 105.

[0056] It is understandable that the mounting groove 102 is provided with a second clamping groove for fixing the elastic tube 103; and the sealing block 200 is provided with a second tenon corresponding to the second clamping groove for fixing the elastic tube 103. By providing the second clamping groove in the mounting groove 102 and providing the second tenon on the sealing block 200 corresponding to the second clamping groove, the elastic tube 103 and the sealing block 200 can be fixed in the mounting groove 102 under the action of the second clamping groove and the second tenon, thereby improving the stability of the connection between the elastic tube 103 and the main body 101 and improving the sealing effect.

[0057] It should be noted that the second tenon and the second slot matching the second tenon may be provided with one or more than one, and may be arranged horizontally or vertically. The embodiment of the present invention does not specifically limit the number and direction of the second tenon and the second slot matching the second tenon.

[0058] Reference Figure 3 , Figure 3 Yes Yes Figure 2 A cross-sectional view of the sealed connection structure 100 is shown.

[0059] like Figure 3 As shown, the mounting groove 102 is provided with a first interface 302, the main body 101 is provided with a second interface 106, the main body 101 is provided with a first channel 300, the first interface 302 is connected with the second interface 106 through the first channel 300, and the first end 108 of the elastic tube 103 is provided in the mounting groove 102, and the first end 108 is connected with the first interface 302.

[0060] Reference Figure 3 The sealing block 200 is provided with a second channel 301 for connecting the elastic tube 103 and the first interface 302. By providing the second channel 301 for connecting the elastic tube 103 and the first interface 302 in the sealing block 200, the elastic tube 103 can be connected with the first interface 302 through the second channel 301 when the tube body abuts against the sealing block 200, thereby improving the sealing effect.

[0061] In addition, an embodiment of the present invention provides a pressure gauge, which includes the sealing connection structure in the above embodiment. The pressure gauge uses a bar tube as an elastic sensitive element, and the sealing connection between the pressure gauge body and the bar tube is achieved through the sealing connection structure in the above embodiment. Therefore, the pressure gauge of this embodiment and the sealing connection structure in the above embodiment belong to the same inventive concept, so these embodiments have the same implementation principle and technical effect, which will not be described in detail here.

[0062] The above is a specific description of the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A sealing connection structure, applied to an elastic tube, characterized in that: include: The main body is provided with a mounting groove, the mounting groove is used to install the elastic tube; the mounting groove is provided with a first interface, the main body is provided with a second interface, a first channel is provided in the main body, the first interface and the second interface are communicated through the first channel, the first end of the elastic tube is provided in the mounting groove, and the first end is communicated with the first interface; A first sealing assembly is disposed in the first end, and the first sealing assembly is used to fix the first end in the mounting groove; a second sealing assembly, disposed in the mounting groove, and connected to the first end, the mounting position of the second sealing assembly corresponds to the mounting position of the first sealing assembly, the second sealing assembly is used to seal the connection between the first end and the first interface, and the second sealing assembly is also used to seal the gap between the elastic tube and the first sealing assembly; The second sealing component is a sealing ring, which is arranged in the mounting groove and located between the first end and the first interface; The sealing ring is sleeved on the first end, and the installation position of the sealing ring corresponds to the installation position of the first sealing assembly.

2. The sealing connection structure according to claim 1, characterized in that: The mounting groove is provided with an accommodating cavity at the first interface for accommodating the second sealing component, and the accommodating cavity is interference-fitted with the second sealing component.

3. The sealing connection structure according to claim 1, characterized in that: The mounting groove is provided with a first tenon for fixing the elastic tube; the first sealing assembly is provided with a first groove for fixing the elastic tube corresponding to the first tenon.

4. The sealing connection structure according to claim 1, characterized in that: The installation groove is provided with a second clamping groove for fixing the elastic tube; the first sealing assembly is provided with a second tenon for fixing the elastic tube corresponding to the second clamping groove.

5. The sealing connection structure according to claim 1, characterized in that: The first sealing component is provided with a second channel for connecting the elastic tube and the first interface.

6. The sealing connection structure according to claim 1, characterized in that: The main body is provided with a claw for fixing the main body.

7. The sealing connection structure according to claim 1, characterized in that: The first sealing assembly is interference fit with the elastic tube.

8. A pressure gauge, characterized in that: The invention comprises a sealing connection structure as claimed in any one of claims 1 to 7.

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