阅读说明：本技术 一种气门嘴角度规 (Valve angle gauge ) 是由 俞敏鸿 徐梓洋 于 2021-08-13 设计创作，主要内容包括：一种气门嘴角度规,包括定位座和与气门孔可拆卸连接的标尺；标尺设有刻度盘,测量时气门孔的轴线与轮辋的外表面的交点O设置为刻度盘的圆心,刻度盘向下延伸有测量时与气门孔同轴的定位轴；定位座测量时卡在轮辋的胎圈座上,定位座设有固定指针,固定指针指示刻度盘上的刻度,固定指针的延长线经过交点O。本发明通过测量时固定不动的固定指针指示标准轮辋的气门孔角度,如果实际加工的气门孔相对理想位置的气门孔角度有变化,理想位置的刻度具有了绕交点O的转动,进而指针指示角度变化。本发明能测气门孔中心位置相对轮辋胎圈座基准的角度,检测结果与产品规范比较,判定是否在公差范围内,该角度规检具测量简便、效率高,可大批量测量。(An air valve angle gauge comprises a positioning seat and a scale which is detachably connected with an air valve hole; the scale is provided with a dial, the intersection point O of the axis of the valve hole and the outer surface of the rim is set as the circle center of the dial during measurement, and the dial extends downwards to form a positioning shaft which is coaxial with the valve hole during measurement; the positioning seat is clamped on a bead seat of the rim during measurement, the positioning seat is provided with a fixed pointer, the fixed pointer indicates scales on the dial, and an extension line of the fixed pointer passes through the intersection point O. The invention indicates the angle of the valve hole of the standard rim by the fixed pointer which is fixed during measurement, if the actually processed valve hole has a change relative to the angle of the valve hole at the ideal position, the scale at the ideal position has rotation around the intersection point O, and then the pointer indicates the change of the angle. The angle gauge can measure the angle of the central position of the valve hole relative to the standard of the rim bead seat, the detection result is compared with the product specification, and whether the detection result is within the tolerance range is judged.)

1. The valve inside angle gauge is characterized by comprising a positioning seat (1) and a scale (2) detachably connected with a valve hole;

the scale (2) is provided with a dial for displaying angles, and a positioning shaft (21) extends downwards from the dial;

the positioning seat (1) is fixed on a bead seat of a rim during measurement, the positioning seat (1) is provided with a fixed pointer, the fixed pointer indicates scales on the dial, and an extension line of the fixed pointer passes through the intersection point O;

when in measurement, the intersection point O of the axis of the valve hole and the outer surface of the wheel rim is set as the circle center of the dial disc, and the positioning shaft (21) is arranged coaxially with the axis of the valve hole.

2. The valve angle gauge of claim 1, wherein the complement of the angle between the fixed pointer and the axis of the rim is the theoretical value of the valve hole angle.

3. A valve angle gauge according to claim 1, characterized in that it further comprises a back cap (3) located inside the rim, the positioning shaft (21) passing through the valve hole and coaxially sleeved with the back cap (3).

4. A valve angle gauge according to claim 1, characterized in that the positioning seat (1) comprises a positioning rod (11) of a telescopic structure, a steel ball (4) is fixed at the end of the positioning rod (11), and the steel ball (4) is in contact with the bead seat.

5. A valve mouth angle gauge according to claim 4, characterized in that, the number of steel balls (4) is 3, one end of the locating rod (11) far away from the dial is fixedly connected with one steel ball (4), and the other end of the locating rod (11) is fixedly connected with two steel balls (4) arranged at intervals.

6. A valve mouth angle gauge according to claim 4, characterized in that the positioning rod (11) comprises a fixed rod (110), a spring (111) and a movable rod (112), all coaxially arranged;

the end part of the fixed rod (110) is provided with a round hole which is sleeved outside the movable rod (112), and the fixed rod (110) is connected with the movable rod (112) in a sliding way;

the spring (111) is arranged in the round hole and is abutted between the movable rod (112) and the fixed rod (110).

7. The valve-mouth angle gauge according to claim 6, wherein the positioning rod (11) further comprises a limiting screw (113), the fixing rod (110) is provided with a through hole, and the limiting screw (113) passes through the through hole to be vertically and fixedly connected with the movable rod (112).

8. The valve stem angle gauge according to claim 1, wherein the positioning seat (1) comprises a positioning rod (11) and a pointer plate (12) which are clamped with the bead seat, the pointer plate (12) is provided with an observation hole (120), and the fixed pointer is arranged in the observation hole (120).

9. A valve angle gauge according to claim 8, characterized in that the positioning seat (1) further comprises an enlarging lens (13) fixedly connected with the pointer plate (12) for enlarging the dial and the fixed pointer.

Technical Field

The invention relates to the field of wheel measurement, in particular to an air valve angle gauge.

Background

The angle of a 5-degree DC rim valve hole of a passenger car wheel is an angle of the center position of the valve hole relative to the reference of a rim bead seat of the wheel, and is an important size for mounting a wheel valve, the angle of the valve hole of the wheel rim and the rim bead seat are space sizes, and are difficult to measure and difficult to detect; the other is an angle template, and the angle of the valve hole is detected, but the accuracy is low, the valve hole is unstable and difficult to identify.

Disclosure of Invention

In order to solve the problems, the invention provides the valve angle gauge which is high in precision and suitable for batch measurement. In order to achieve the purpose, the invention adopts the following specific technical scheme:

an air valve angle gauge comprises a positioning seat and a scale which is detachably connected with an air valve hole;

the scale is provided with a dial for displaying angles, and a positioning shaft extends downwards from the dial;

the positioning seat is fixed on a bead seat of a rim during measurement, the positioning seat is provided with a fixed pointer, the fixed pointer indicates scales on the dial, and an extension line of the fixed pointer passes through the intersection point O;

during measurement, an intersection point O of the axis of the valve hole and the outer surface of the rim is set as the circle center of the dial, and the positioning shaft and the axis of the valve hole are coaxially arranged.

Furthermore, the complementary angle of the included angle between the fixed pointer and the axis of the rim is the theoretical value of the angle of the valve hole.

Furthermore, the valve angle gauge further comprises a back cap located inside the rim, and the positioning shaft penetrates through the valve hole and is coaxially sleeved with the back cap.

Furthermore, the positioning seat comprises a positioning rod with a telescopic structure, a steel ball is fixed at the end part of the positioning rod, and the steel ball is in contact with the bead seat.

Furthermore, the number of the steel balls is one, one end of the positioning rod, which is far away from the dial, is fixedly connected with one steel ball, and the other end of the positioning rod is fixedly connected with two steel balls which are arranged at intervals.

Further, the positioning rod comprises a fixed rod, a spring and a movable rod which are coaxially arranged;

the end part of the fixed rod is provided with a round hole which is sleeved outside the movable rod, and the fixed rod is connected with the movable rod in a sliding way;

the spring is arranged in the round hole and is abutted between the movable rod and the fixed rod.

Furthermore, the positioning rod further comprises a limiting screw, the fixing rod is provided with a through hole, and the limiting screw penetrates through the through hole and is vertically and fixedly connected with the movable rod.

Furthermore, the positioning seat includes a positioning rod and a pointer plate which are connected with the bead seat in a clamping manner, the pointer plate is provided with an observation hole, and the fixed pointer is arranged in the observation hole.

Furthermore, the positioning seat further comprises an amplifying lens fixedly connected with the pointer plate and used for amplifying the dial and the fixed pointer.

The invention can obtain the following technical effects:

the invention provides a rim valve hole angle gauge applicable to 5-degree DC or other angles, which can measure the angle of the center position of a wheel valve hole relative to the standard of a wheel rim bead seat, compare the detection result with the product specification and judge whether the detection result is within a tolerance range.

Drawings

Fig. 1 is a schematic front view of a valve angle gauge according to an embodiment of the present invention;

FIG. 2 is a schematic top view of a valve angle gauge according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 4 is a schematic structural diagram of the positioning seat disclosed in the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a scale disclosed in the embodiment of the present invention.

Reference numerals:

1. positioning seats; 11. positioning a rod; 110. fixing the rod; 111. a spring; 112. a movable rod; 113. a limit screw; 12. a pointer plate; 120. an observation hole; 121. a pointer mounting plate; 122. a support plate; 13. a magnifying lens; 2. a scale; 21. positioning the shaft; 3. carrying a cap; 4. and (5) steel balls.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.

Fig. 1 to 3 are schematic structural views of the valve opening angle gauge disclosed in the present invention, and as shown in fig. 1, the valve opening angle gauge includes a positioning seat 1 and a scale 2 detachably connected to a valve hole.

The positioning seat 1 can be fixed on a bead seat of a rim in the form of clamping connection and the like during measurement, the positioning seat 1 is provided with a fixed pointer, the fixed pointer indicates scales on a dial, and an extension line of the fixed pointer passes through the intersection point O. I.e. the position of the fixed pointer is stationary. Preferably, the complementary angle of the included angle between the fixed pointer and the axis of the rim is the theoretical value of the valve hole angle, namely the ideal valve hole angle value. Therefore, the fixed pointer points to an ideal valve hole angle to quickly judge whether the valve hole angle is standard or not. And the inclination direction of the fixed pointer can be visually displayed, so that the angle gauge is convenient to judge the valve hole angle suitable for measuring various angles.

The scale 2 is provided with a scale, and as shown in fig. 5, the scale 2 is integrally hook-shaped and includes a scale and a positioning shaft 21.

The dial is a section of arc flat plate, and a section of scale for displaying angles is arranged on the dial. The middle position of the scale is a standard scale. And standard scales are used for displaying the standard valve hole angle of the standard rim, namely the ideal valve hole angle, and no error exists in valve hole machining. Taking the valve hole angle as an example of 20 degrees, the standard scale shows 20 degrees. Scales are distributed on two sides of the standard scale, and the scale values at two end points of the preferable scale lines are set as allowable valve hole angle values. This facilitates the display of whether the valve hole angle exceeds a reasonable range. The dial has a positioning shaft 21 extending downward coaxially with the valve hole.

During measurement, the intersection point O of the axis of the valve hole and the outer surface of the rim is set as the circle center of the dial. The valve hole for mounting the outer surface of the rim is a plane perpendicular to the axis of the valve hole, and the axial end surface of the positioning shaft 21 is in contact with the plane, namely the positioning shaft 21 is perpendicular to the plane. In this way, the valve bore can be made coaxial with the positioning shaft 21 during the measurement. Therefore, errors exist in the axis machining of the valve hole of the rim to be measured, and when the axis of the valve hole of the rim to be measured and the axis of the valve hole of the standard rim rotate relative to the point O, the dial can also rotate by the point O.

The dial disc with the structure takes the circle center of the valve hole on the outer surface of the actual rim to be measured, namely the intersection point O as the circle center. When the actual valve hole angle to be measured is not consistent with the ideal valve hole angle, the dial rotates by taking the intersection point O as the center of a circle, the standard scale also changes in position, and the scale indicated by the fixed pointer is no longer the initial standard scale and points to a new scale value.

Preferably, the removable connection of the scale 2 to the rim is achieved by a back cap 3, which is located inside the rim and has a diameter greater than that of the valve hole, and the axial end of the positioning shaft 21 has a diameter greater than that of the valve hole, so as to be clamped outside the rim. The end part of the positioning shaft 21 is fixedly connected with a screw which is sleeved with the back cap 3 through threads after penetrating through the valve hole. The rim is thus clamped between the back cap 3 and the positioning shaft 21, and the scale 2 is fixed.

In a preferred embodiment of the present invention, the positioning seat 1 includes a positioning rod 11 having a telescopic structure, a steel ball 4 is fixed to an end of the positioning rod 11, and the steel ball 4 contacts with the bead seat. Because the positioning seat is of a telescopic structure, the two ends of the positioning seat can be ensured to be in close contact with the bead seat, and the positioning seat is suitable for processing the bead seat with errors. The positioning rod 11 is connected with the bead seat through the steel ball, so that the bead seat can be prevented from being scratched by the positioning rod 11, and friction force is reduced.

In a preferred embodiment of the present invention, the number of the steel balls 4 is 3, one end of the positioning rod 11 away from the dial is fixedly connected with one steel ball 4, and the other end of the positioning rod 11 is fixedly connected with two steel balls 4 arranged at intervals. As shown in fig. 4, the positioning rod 11 is a T-shaped structure, and includes a main rod arranged along the length direction and a cross rod vertically and fixedly connected to one end of the main rod. One end of the main body rod is distributed with a steel ball, and two ends of the cross rod are distributed with steel balls. Two steel balls connected by the cross rod are distributed on two sides of the steel ball connected by the main body rod, so that the three steel balls are not on the same plane, and the contact stability of the positioning rod 11 and the rim is improved.

In a preferred embodiment of the present embodiment, the positioning lever 11 includes a fixed lever 110, a spring 111, and a movable lever 112, all coaxially arranged. The positioning rod is of a split structure, the fixed rod 110 and the movable rod 112 are sleeved through round holes, the direction of the round holes is along the axial direction of the positioning rod, namely the thickness direction of the wheel, one end of the fixed rod 110 is in contact with the bead seat through a steel ball, the other end of the fixed rod is provided with a round hole, one end of the movable rod 112 is sleeved, and the other end of the movable rod 112 is in contact with the bead seat. The spring 111 is built in the circular hole and abuts between the movable lever 112 and the fixed lever 110. Thus, the movable rod 112 and the fixed rod 110 are elastically sleeved together, the spring can be compressed by pushing the movable rod, so that the whole length of the positioning rod is shortened, and otherwise, the spring is extended or restored to the initial state by pulling the movable rod, so that the whole length of the positioning rod is extended. Thus, the positioning rod and the bead seat are installed.

Preferably, the positioning rod 11 further includes a limit screw 113, and a through hole communicated with the circular hole is formed on the outer surface of the end portion of the fixing rod 110, so that a part of the limit screw 113 is exposed outside the fixing rod 110, and a part of the limit screw passes through the through hole to be vertically and fixedly connected with the movable rod 112. The moving distance of the limit screw 113 is limited by the length of the through hole in the length direction of the circular hole, thereby preventing the movable bar from being separated from the fixed bar. The limit screw belongs to the prior art in the limit field, and is not described herein again.

In a preferred embodiment of the present invention, the positioning seat 1 includes a positioning rod 11 and a pointer plate 12 that are engaged with the bead seat, the pointer plate 12 is provided with an observation hole 120, and the fixed pointer is disposed in the observation hole 120. More specifically, as shown in fig. 4, the pointer plate 12 is a fan-shaped flat plate which is hollow as a whole, and a viewing hole 120 is formed in the middle. The pointer plate has a circular arc-shaped pointer attachment plate 121 at the outer edge, i.e., the top, and both ends of the pointer attachment plate 121 extend toward the positioning rods. The fixed end of the fixed pointer is installed on the pointer installation plate, and the other end of the fixed pointer is a free end and points to the dial. The outer edge of the dial and the inner edge of the pointer mounting plate, i.e., the outer edge of the dial and the outer edge of the observation hole, are spaced, so that a mounting space is provided for the fixed pointer, the fixed pointer can be recognized from the whole observation hole, and the position of the fixed pointer can be observed conveniently.

In a preferred embodiment of the present invention, the positioning base 1 further includes a magnifying lens 13 fixedly connected to the pointer plate 12 for magnifying the dial and fixing the pointer. As shown in fig. 3, in order to facilitate observation and enlarged display of the dial and the fixed pointer, it is conceivable that one magnifying lens 13 may be fixed between the dial and the fixed pointer and the human eye. Preferably, the magnifying glass 13 and the pointer plate 12 are arranged in parallel, and can extend to the magnifying glass 13 through the top of the pointer plate 12, and the extending part is the supporting plate 122. The supporting plate 122 is vertically and fixedly connected with the magnifying lens 13 and the pointer plate 12.

During the use, the wheel of being surveyed stands on testing platform, insert the rim valve hole with the location axle 21 of the lower extreme of scale 2, fix location axle 21 on the valve hole with back of the body cap 3, notice and guarantee that scale 2 is on a parallel with the axis of rim, positioning seat 1 passes through spring 11 and steel ball 4 card on the rim bead seat, the pointer is close to the scale on the positioning seat 1, see through the indicated value of magnifying lens 13 observation pointer at the scale, be valve hole angle value promptly, angle value and product specification are compared, and then judge whether qualified. The angle gauge can measure the angle of the 5-degree DC rim valve hole, and different angle gauges can measure different rim valve hole angles according to the principle of the angle gauge.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.