CN210893280U

CN210893280U - Self-positioning fixing assembly and metering device

Info

Publication number: CN210893280U
Application number: CN201921241371.3U
Authority: CN
Inventors: 祁二骆
Original assignee: Goldcard Smart Group Co Ltd
Current assignee: Goldcard Smart Group Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-06-30
Anticipated expiration: 2029-08-02

Abstract

The utility model relates to an assembly is fixed technical field, especially relates to a can realize fixed subassembly of self-align fixing, including mounting and fixed body, be equipped with the fixed orifices on the fixed body, it is protruding to be equipped with the location on the mounting, be equipped with on the fixed body and correspond the constant head tank that sets up with the location arch, fixed body with the constant head tank has cooperation state and location state, during the cooperation state the location arch is located fixed body medial surface inboard, during rotatory mounting, the location arch is switched into location state with the constant head tank. The utility model discloses the scheme can realize that self-align prevents to appear returning to contract, skid and the axle is rotated, the fixed subassembly of convenient assembly, simultaneously the utility model discloses a metering device with this fixed subassembly is disclosed to the scheme.

Description

Self-positioning fixing assembly and metering device

Technical Field

The utility model relates to an assembly fixing technology field especially relates to a can realize from fixed subassembly of location and have this fixed subassembly's metering device.

Background

The fixing piece (such as a screw) is a fixing device frequently seen in daily life of people and is widely applied to various industries. Screw connections, for example, are almost ubiquitous in the machine manufacturing industry. Some are used to fasten two objects together, and some are used to fasten themselves to an object. A common method is to provide a hole on an object, and lock the fixing member after passing through the hole by using other locking members (such as a nut).

However, in the existing practical application, when the fixing member locks the nut or other locking members after passing through the hole, the fixing member will retract or slip when locking or fixing the nut, so that the assembly is inconvenient, and one end needs to be fixed to lock the other end well. However, if the end is a dark box or a closed space, people cannot fix the end, so that the assembly is very laborious.

For example, in the field of metering devices, whether volumetric meters or electronic meters, electronic and electrical components are disposed inside the housing, and signals of the components need to be transmitted and interacted with electronic control components outside the housing. Therefore, the shell needs to be punched, a connector fixing piece (commonly called an aviation connector) is installed, the fixing and sealing of the other end are carried out after the fixing connector is placed in a shell hole position, due to the fact that the fixing connector is stressed during fixing, the fixing connector can retract and fall into the shell under the condition that other fixing measures are not taken, and the fixing connector cannot be installed, or the fixing connector cannot be assembled or is difficult to assemble due to the fact that the fixing connector slips in the hole.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned prior art shortcoming to a certain extent, provide one kind and have from the fixed subassembly that the positioning can realize convenient assembly and have this from the metering device of positioning subassembly.

This scheme provides a from fixed subassembly of locating, including mounting and fixed body, be equipped with the fixed orifices on the fixed body, it is protruding to be equipped with the location on the mounting, be equipped with the constant head tank that corresponds the setting with the location arch on the fixed body, fixed body with the constant head tank has cooperation state and location state, during the cooperation state the location arch is located fixed body medial surface inboard, during rotatory mounting, the location arch is the location state with the constant head tank switching.

In a further scheme, the section of the fixing piece is circular, the height of the positioning protrusion is D, the diameter of the section of the fixing piece is D, the diameter of the fixing hole is H, the depth of the positioning groove is H, and H + H is more than or equal to D + D and is greater than H.

In a further scheme, the cross section of the positioning groove is fan-shaped, and the circle of the outer edge of the positioning groove is concentric with the fixing hole.

Further scheme, it is protruding still to be equipped with the screens on the mounting, when location arch and constant head tank were located the position state, the protruding joint of screens in the constant head tank lateral margin.

In a further scheme, the clamping protrusions and the positioning protrusions are integrally formed, and the positioning protrusions are divided into reverse positioning protrusions and forward positioning protrusions.

In a further scheme, the connection point of the clamping protrusion and the positioning protrusion is located in the middle of the clamping protrusion.

In a further scheme, the number of the positioning bulges is two or more, and the two or more positioning bulges are uniformly distributed on the outer surface of the fixing piece.

In a further scheme, the number of the positioning grooves is the same as that of the positioning bulges, and the positioning grooves are matched with the positioning bulges.

In a further scheme, the fixing piece comprises a fixing rod and a fixing cap, the positioning protrusion is arranged on the fixing rod, the distance from the positioning protrusion to the fixing cap is M, the thickness of the fixing body is N, and the thickness of the fixing body is more than or equal to 1.5mm and more than or equal to M-N and more than or equal to 0.

In a further aspect, the securing rod is threaded.

This scheme still provides a measuring instrument, measuring instrument includes the fixed subassembly of self-align in the above-mentioned scheme, fixed body is the meter housing, the mounting is the rigid coupling spare that sets up on meter housing.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. this scheme provides a from fixed subassembly of locating, including mounting and fixed body, be equipped with the fixed orifices on the fixed body, it is protruding to be equipped with the location on the mounting, be equipped with the constant head tank that corresponds the setting with the location arch on the fixed body, fixed body with the constant head tank has cooperation state and location state, during the first state the location arch is located fixed body medial surface inboard, during rotatory mounting, the location arch is the location state with the constant head tank switching. The positioning protrusions and the positioning grooves are arranged, so that the fixing piece can be positioned automatically, and the fixing piece cannot retract or slip rotationally in the assembling and fixing process. The fixing piece can be automatically locked in the positioning state, so that the fixing piece cannot retract in the axial direction. The other end of the fixing member can be reliably assembled regardless of whether the other end is fixed by other devices.

2. In a further scheme, the section of the fixing piece is circular, the height of the positioning protrusion is D, the diameter of the section of the fixing piece is D, the diameter of the fixing hole is H, the depth of the positioning groove is H, and H + H is more than or equal to D + D and is greater than H. Such size is injectd and can be realized the mounting and pass the fixed orifices well, can realize again under the positioned state that the protruding side of blocking the fixed body well of location realizes good location.

3. Further scheme, it is protruding still to be equipped with the screens on the mounting, when location arch and constant head tank were located the position state, the protruding joint of screens in the constant head tank lateral margin. The purpose of this arrangement is that after axial positioning of the fixing element is achieved, positioning in the direction of rotation, whether clockwise or anticlockwise, can also be achieved. As long as the protruding joint of screens in the constant head tank lateral margin just can not appear having enough to meet the need or the problem of skidding, can all realize self-align when locking or unloading simultaneously.

4. In a further scheme, the number of the positioning bulges is two or more, and the two or more positioning bulges are uniformly distributed on the outer surface of the fixing piece. The number of the positioning grooves is the same as that of the positioning bulges, and the positioning grooves are aligned with the positioning bulges. The uniform distribution can realize uniform stress, and the deflection caused by uneven stress is avoided.

5. In a further scheme, the fixing piece comprises a fixing rod and a fixing cap, the positioning protrusion is arranged on the fixing rod, the distance from the positioning protrusion to the fixing cap is M, the thickness of the fixing body is N, and the thickness of the fixing body is more than or equal to 1.5mm and more than or equal to M-N and more than or equal to 0. The interference magnitude between the positioning protrusion and the fixing body is guaranteed, and friction and positioning effects are increased.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a perspective view of the self-positioning fixing assembly of the present invention;

FIG. 2 is a perspective view of the self-positioning fixing component of the present invention;

FIG. 3 shows the fitting state of the fixing body and the positioning groove in the self-positioning fixing assembly of the present invention;

FIG. 4 shows the positioning state of the fixing body and the positioning groove in the self-positioning fixing assembly of the present invention;

FIG. 5 is a schematic cross-sectional dimension relationship between the fixing member and the fixing hole of the self-positioning fixing assembly of the present invention;

fig. 6 is a schematic perspective view of a metering device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.

As shown in fig. 1-4, the utility model discloses the scheme provides a self-align fixed subassembly, can be used to in mechanical fastening and the panel beating is fixed, and specific this fixed subassembly includes mounting 1 and fixed body 2, be equipped with fixed orifices 21 on the fixed body 2, mounting 1 includes dead lever 10 and locking cap 11, and dead lever 10 can be straight-bar smooth rod, also can be for the threaded rod. Be equipped with location arch 12 on the mounting 1, be equipped with the constant head tank 22 that corresponds the setting with location arch 12 on the fixed body 2, fixed body 2 with constant head tank 22 has cooperation state (fig. 3) and location state (fig. 4), and it is convenient for its assembly of counterpointing under the cooperation state, with mounting 1 from fixing on fixed body 2 under the location state, during the cooperation state, location arch 12 is located 2 medial surfaces inboards of fixed body, the rotatory mounting this moment, location arch 12 takes place relative displacement with constant head tank 22, and they also switch into the location state immediately.

Specifically, as shown in fig. 5, for the convenience of alignment, assembly and reliable realization of self-fixing effect, the section of the fixing member 1 is circular (the section here is the section of the fixing rod 10), the height of the positioning protrusion 12 is D, the diameter of the section of the fixing member 1 is D, the diameter of the fixing hole 21 is H, and the depth of the positioning groove 22 is H, wherein H + H is greater than or equal to D + D > H. It will be understood that the positioning protrusions 12 may have various shapes, and the heights thereof may not be equal everywhere, and the height herein refers to the height of the most convex middle or the height of the highest point. The depth h of the positioning groove 22 is also the depth of the deepest point, for example, the distance of the deepest point of the arc surface when the groove is an arc-shaped groove.

As shown in fig. 1 and fig. 2, the shape of the positioning slot 22 may be determined according to the shape of the positioning protrusion 12, and may be a triangle, a square, or a fan-shaped arc surface, in this embodiment, the cross section of the positioning slot 22 is fan-shaped arc surface, that is, the outer edge of the positioning slot 22 is arc-shaped, and the circle of the positioning slot is concentric with the fixing hole 21. The fixing part 1 is further provided with a clamping protrusion 13, when the positioning protrusion 12 and the positioning groove 22 are located at a positioning state, the clamping protrusion 13 is clamped on the side edge of the positioning groove 22. The clamping protrusion 13 and the positioning protrusion 12 are integrally formed, and the positioning protrusion 12 is divided into a reverse positioning protrusion and a forward positioning protrusion. Therefore, the clamping fixation can be realized no matter the rotation is carried out in the clockwise direction and the anticlockwise direction. The screens protruding 13 with the protruding 12 tie point in location is located the protruding 13 middle part of screens, and isometric about realizing is left and right.

As shown in fig. 3 to 4, the number of the positioning protrusions 12 is two or more, and the two or more positioning protrusions are uniformly arranged on the outer surface of the fixing member 1. The positioning grooves 22 are the same in number as the positioning protrusions 12 and are aligned with each other. The uniform distribution can realize the uniform positioning stress and avoid the eccentric stress in the assembling or unloading process.

Specifically, as shown in fig. 2, the fixing member 1 includes a fixing rod 10 and a fixing cap 12, the positioning protrusion 12 is disposed on the fixing rod 10, a distance from the positioning protrusion 12 to the fixing cap 12 is M, a thickness of the fixing body is N, wherein 1.5mm is greater than or equal to M-N is greater than or equal to 0. The interference magnitude between the positioning protrusion and the fixing body is guaranteed, and friction and positioning effects are increased. Meanwhile, the sealing effect can be ensured.

During the assembly, mounting 1 counterpoints with fixed orifices 21 for the protruding 12 and the constant head tank 22 counterpoint of location, then the assembly, make protruding 12 and the constant head tank 22 of location be located the cooperation state, rotatory mounting 1 this moment, the protruding 12 and the constant head tank 22 of location take place the displacement, rotatory this moment at the end the protruding 13 card of screens when the constant head tank 22 edge, and they reach the location state. The selection of the forward and reverse can be realized according to the tightening direction of the fixing cap which is needed to be fixed subsequently by the fixing rod. Thus, the following assembling process can be conveniently realized after the self-positioning is realized.

The second concrete implementation:

the fixing rod 10 is formed with threads, and the fixing member 1 and the fixing body 2 are assembled and screwed by nuts, so that the phenomena of slipping, retracting and shaft rotation are avoided. Certainly when needing to unscrew the nut, owing to set up contrary location arch and in the same direction as the location arch, no matter like this the fastening nut still lift off the nut and all can realize from the location, dual self-align.

The third concrete embodiment:

specifically, as shown in fig. 6, this embodiment is a specific metering device, such as a gas meter, a water meter, and the like, the gas meter may be a diaphragm gas meter or an electronic gas meter, taking an electronic gas meter as an example, the electronic gas meter includes a meter housing, and components such as a metering module, a valve, and a sensor are arranged inside the meter housing, and these components need to be connected with an external control board by a signal line, so that a hole can be opened to connect the signal line by using a fixing member (referred to as an aviation connector in the industry), which not only ensures normal transmission of signals, but also requires extremely high security protection and sealing. The instrument includes the fixed subassembly of self-align in the above-mentioned scheme in this embodiment, and its instrument case's bottom plate (or curb plate) is equivalent to fixed body 2, the signal transmission of inside components and parts and external control panel just so can be realized for the rigid coupling spare that sets up on instrument housing to mounting 1.

The self-positioning assembly provided by the scheme is provided with the positioning protrusions and the positioning grooves, and can realize self-positioning of the fixing piece, so that the fixing piece cannot retract or rotationally slip in the assembling and fixing process. The fixing piece can be automatically locked in the positioning state, so that the fixing piece cannot retract in the axial direction. The other end of the fixing member can be reliably assembled regardless of whether the other end is fixed by other devices. The assembly efficiency and the process complexity are effectively improved, the structural design is ingenious, and the effect is remarkable.

Claims

1. The utility model provides a from fixed subassembly of location, includes mounting and fixed body, be equipped with fixed orifices on the fixed body, its characterized in that: the fixing piece is provided with a positioning bulge, the fixing body is provided with a positioning groove corresponding to the positioning bulge, the fixing body and the positioning groove are in a matching state and a positioning state, the positioning bulge is located on the inner side of the inner side surface of the fixing body in the matching state, and the positioning bulge and the positioning groove are switched into the positioning state when the fixing piece is rotated.

2. The self-positioning fixing assembly of claim 1, wherein the fixing member is circular in cross-section, the positioning protrusion has a height D, the fixing member has a cross-sectional diameter D, the fixing hole has a diameter H, and the positioning groove has a depth H, wherein H + H ≧ D + D ≧ H.

3. The self-positioning anchor assembly of claim 2, wherein the detent is fan-shaped in cross-section, the detent outer edge lying in a circle concentric with the anchor hole.

4. The self-positioning fixing assembly according to claim 2, wherein the fixing member further comprises a locking protrusion, and when the positioning protrusion and the positioning groove are in the positioning state, the locking protrusion is locked on the side edge of the positioning groove.

5. The self-positioning fixing assembly according to claim 4, wherein the positioning protrusions are integrally formed with the positioning protrusions, and the positioning protrusions are divided into backward positioning protrusions and forward positioning protrusions.

6. The self-positioning anchor assembly of claim 5, wherein the point of attachment of the detent projection to the detent projection is located in the middle of the detent projection.

7. The self-positioning fixing assembly according to any one of claims 1 to 5, wherein the number of the positioning protrusions is two or more, and the two or more positioning protrusions are uniformly arranged on the outer surface of the fixing member.

8. The self-positioning fixing assembly of claim 7 wherein the positioning slots are the same number as the positioning projections and are matched to each other.

9. The self-positioning fixing assembly of any one of claims 1 to 5, wherein the fixing member comprises a fixing rod and a fixing cap, the positioning protrusion is disposed on the fixing rod, the distance from the positioning protrusion to the fixing cap is M, the thickness of the fixing body is N, and 1.5mm ≥ M-N ≥ 0.

10. The self-positioning fixation assembly of claim 9, wherein the fixation rod is threaded.

11. A metering device, characterized by: the metering device comprises the self-positioning fixing assembly as claimed in any one of claims 1 to 10, wherein the fixing body is a device shell, and the fixing piece is a fixing piece arranged on the device shell.