Gauge for knob of washing machine

Abstract

The utility model discloses a washing machine knob testing fixture, belongs to the field of testing fixture tools, and solves the problems in the prior art that the quality inspection measurement of washing machine knobs is difficult, the key size is difficult to control by a conventional technique, and the skill requirement on measurement personnel is high. According to the invention, the upper end face of the tool bottom plate is provided with a plurality of detection tool bosses which are matched with the washing machine rotary knobs; every two adjacent detection tool bosses are arranged at intervals, and all the detection tool bosses are linearly arranged on the upper end face of the tool bottom plate. The upper end surface and the side surface of the checking fixture boss are respectively a top size positioning surface and a side size positioning surface; and the shapes of the top size positioning surface and the side size positioning surface are matched with the inner top wall and the inner side wall of the washing machine knob. The washing machine knob testing fixture provided by the utility model accelerates the working efficiency, and can conveniently and quickly check and confirm whether the washing machine knob is qualified or not.

Description

Technical Field

[0001] The utility model relates to a washing machine knob inspection tool, belonging to the field of inspection tool tools. Background Art

[0002] In recent years, with the rapid development of science and technology, social progress and the continuous improvement of people's living standards, washing machines have become one of the indispensable household appliances in the family. Usually, there are knobs on mechanically controlled washing machines to operate timers and select switches. During the measurement process of washing machine knobs, due to the large number of curved surfaces, quality inspection and measurement are difficult, and it is difficult to control key dimensions by conventional methods. High skills are required for measurement personnel. Utility Model Content

[0003] The utility model provides a washing machine knob inspection tool, which improves work efficiency and conveniently and quickly inspects and confirms whether the washing machine knob is qualified.

[0004] The technical solution adopted by the utility model is a washing machine knob inspection tool, comprising a tooling bottom plate, on the upper end surface of which are constructed a plurality of inspection tool bosses which are arranged in cooperation with the washing machine knob;

[0005] Two adjacent inspection tool bosses are arranged at intervals, and all inspection tool bosses are arranged along a straight line on the upper end surface of the tooling bottom plate;

[0006] The inspection tool boss is a conical cylindrical boss, and the upper end surface and the side surface of the inspection tool boss are respectively the top dimension positioning surface and the side dimension positioning surface; the shapes of the top dimension positioning surface and the side dimension positioning surface are matched with the inner top wall and the inner side wall of the washing machine knob;

[0007] The outer edge of the top of the inspection tool boss is annular, and the outer edge of the top surface of the inspection tool boss has a chamfered surface, which is arranged in an annular shape around the outer edge of the top surface of the inspection tool boss, and the chamfered surface is arranged in a clearance fit with the inner wall of the washing machine knob.

[0008] Optimally, in the above-mentioned washing machine knob inspection fixture, a positioning step is provided in the middle section of the side dimension positioning surface of the inspection fixture boss, and the positioning step is annular and arranged around the inspection fixture boss.

[0009] Optimally, in the above-mentioned washing machine knob inspection fixture, a clearance groove is constructed in the middle of the top surface of the inspection fixture boss, and the top opening of the clearance groove is located in the middle of the top surface of the inspection fixture boss;

[0010] A plurality of positioning notches are arranged at the top opening of the air-avoiding groove, and the positioning notches are evenly spaced around the top opening of the air-avoiding groove.

[0011] Optimally, in the above-mentioned washing machine knob inspection fixture, the internal bottom end surface of the air-avoiding groove has an internal positioning surface and a lower end notch, and the lower end notch passes through the tooling bottom plate.

[0012] Optimally, in the above-mentioned washing machine knob inspection fixture, both side edges of the chamfered surface have arc chamfers respectively.

[0013] Optimally, in the above-mentioned washing machine knob inspection fixture, the inspection fixture boss and the tooling bottom plate are integrally formed.

[0014] The advantages of this application are as follows: In the technical solution of this application, multiple inspection jig bosses are set on the tooling bottom plate. After the injection molding of the washing machine knob workpiece is completed, it does not need to be removed from the diversion outlet branch. After the injection molding is completed, it can be placed in the inspection jig as a whole for size inspection. Multiple washing machine knob workpieces can be inspected at one time, avoiding the trouble of multiple loading caused by the inspection of a single washing machine knob workpiece. Multiple positioning surfaces are set on the surface and inside of the inspection jig boss to inspect the size of the washing machine knob. The qualified control size can be found by the naked eye, which speeds up work efficiency. It is only necessary to observe the inspection jig to determine whether the product is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of this application;

[0016] Figure 2 for Figure 1 A top view of

[0017] Figure 3 for Figure 1 BB cross-sectional view;

[0018] Figure 4 This is a schematic diagram of the matching structure between the washing machine knob inspection fixture and the washing machine knob of the present application;

[0019] Figure 5 for Figure 4 Side view of

[0020] Figure 6 for Figure 4 A top view of

[0021] Figure 7 for Figure 4 AA section view. DETAILED DESCRIPTION

[0022] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] As shown in the figure, the utility model is a washing machine knob inspection tool, including a tooling base plate 1, and a plurality of inspection tool bosses 2 configured to cooperate with the washing machine knob are constructed on the upper end surface of the tooling base plate 1. In the present application, the inspection tool boss 2 and the tooling base plate 1 can be integrally formed by bakelite material through a machining center, or can be processed and manufactured by other polymer materials or metal materials.

[0024] In this embodiment, two adjacent inspection jig bosses 2 are spaced apart, and all inspection jig bosses 2 are arranged in a straight line on the upper end surface of the tooling base plate 1. The spacing between two adjacent inspection jig bosses 2 corresponds to the spacing of the washing machine knob when it is not removed from the nozzle branch after injection molding. After the injection molding of the washing machine knob workpiece is completed, it does not need to be removed from the diversion nozzle branch. After the injection molding is completed, it can be placed in the inspection jig as a whole for dimensional inspection. Multiple washing machine knob workpieces can be inspected at one time, avoiding the trouble of multiple loading caused by the inspection of a single washing machine knob workpiece.

[0025] The shape of the gauge boss 2 is matched with the internal shape structure of the washing machine knob. The gauge boss 2 is a conical cylindrical boss, and the top and bottom end surfaces of the gauge boss 2 are both circular, and the top end surface diameter of the gauge boss 2 is smaller than the bottom end surface diameter. The upper end surface and the side surface of the gauge boss 2 are respectively the top dimension positioning surface 201 and the side dimension positioning surface 202, and the shapes of the top dimension positioning surface 201 and the side dimension positioning surface 202 are matched with the internal top wall and inner side wall of the washing machine knob.

[0026] A clearance fit is adopted between the top dimension positioning surface 201 and the inner top end surface of the washing machine knob, and the clearance between the two is controlled at 0.01 mm.

[0027] The outer edge of the top end of the inspection tool boss 2 is annular, and a chamfered surface 205 is provided at the outer edge of the top end surface of the inspection tool boss 2. The chamfered surface 205 is arranged in a ring shape around the outer edge of the top end surface of the inspection tool boss 2. The chamfered surface 205 is arranged to cooperate with the inner wall gap of the washing machine knob, and the gap between the chamfered surface 205 and the inner wall of the washing machine knob is controlled to be 1 mm.

[0028] The middle section of the side dimension positioning surface 202 of the gauge boss 2 has a positioning step 204, which is annular and arranged around the gauge boss 2. The gap between the side dimension positioning surface 202 above the positioning step 204 and the inner wall of the washing machine knob, and the gap between the side dimension positioning surface 202 below the positioning step 204 and the inner wall of the washing machine knob are both controlled at 0.05 mm.

[0029] An air-avoiding groove 3 is constructed in the middle of the top surface of the inspection tool boss 2, and the top opening of the air-avoiding groove 3 is located in the middle of the top surface of the inspection tool boss 2. A plurality of positioning notches 301 are arranged at the top opening of the air-avoiding groove 3, and the positioning notches 301 are evenly spaced around the top opening of the air-avoiding groove 3. The inner bottom end surface of the air-avoiding groove 3 is an inner positioning surface and has a lower end notch 203, and the lower end notch 203 passes through the tooling bottom plate 1.

[0030] After the washing machine knob is mounted on the inspection tool boss 2, the column 4 inside the washing machine knob is inserted into the inspection tool boss 2 from the air avoidance groove 3, and the gap between the side wall of the column 4 inside the washing machine knob and the inner side wall of the air avoidance groove 3 is controlled to be 0.01 mm. The lower end of the column 4 inside the washing machine knob is spaced from the inner bottom end surface of the air avoidance groove 3. The lower end notch 203 plays a venting role to prevent the column 4 inside the washing machine knob from being difficult to insert into the air avoidance groove 3.

[0031] The positioning notch 301 is arranged in cooperation with the reinforcing rib at the root of the column 4 inside the washing machine knob to play a role in installation and positioning.

[0032] When in use, the washing machine knob workpiece is manually placed on the inspection jig boss 2 of the inspection jig, and the washing machine knob workpiece slowly falls by its own gravity, and the inspector can visually feel obvious damping. After the washing machine knob workpiece falls on the inspection jig boss 2 and fits perfectly with the inspection jig boss 2, the workpiece is manually shaken, and if there is no obvious gap, it is qualified.

[0033] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A washing machine knob inspection tool, comprising a tooling base plate (1), wherein a plurality of inspection tool bosses (2) are constructed on the upper end surface of the tooling base plate (1) and are arranged to cooperate with the washing machine knobs; the characteristics are as follows: Two adjacent inspection tool bosses (2) are arranged at intervals, and all inspection tool bosses (2) are arranged along a straight line on the upper end surface of the tooling bottom plate (1); The inspection tool boss (2) is a conical cylindrical boss, and the upper end surface and the side surface of the inspection tool boss (2) are respectively a top dimension positioning surface (201) and a side dimension positioning surface (202); the shapes of the top dimension positioning surface (201) and the side dimension positioning surface (202) are arranged in coordination with the inner top wall and the inner side wall of the washing machine knob; The outer edge of the top end of the inspection tool boss (2) is annular, and a chamfered surface (205) is provided at the outer edge of the top end surface of the inspection tool boss (2). The chamfered surface (205) is arranged in an annular shape around the outer edge of the top end surface of the inspection tool boss (2), and the chamfered surface (205) is arranged to cooperate with the inner wall of the washing machine knob in a clearance.

2. The washing machine knob inspection tool according to claim 1, characterized in that: The middle section of the side dimension positioning surface (202) of the gauge boss (2) has a positioning step (204), and the positioning step (204) is annular and arranged around the gauge boss (2).

3. The washing machine knob inspection tool according to claim 1, characterized in that: A clearance groove (3) is constructed in the middle of the top end surface of the inspection tool boss (2), and the top end opening of the clearance groove (3) is located in the middle of the top end surface of the inspection tool boss (2); A plurality of positioning notches (301) are arranged at the top opening of the air avoidance groove (3), and the positioning notches (301) are evenly spaced around the top opening of the air avoidance groove (3).

4. The washing machine knob inspection tool according to claim 3, characterized in that: The inner bottom end surface of the air-avoiding groove (3) has an inner positioning surface and a lower end notch (203), and the lower end notch (203) passes through the tooling bottom plate (1).

5. The washing machine knob inspection tool according to claim 1, characterized in that: The two side edges of the chamfered surface (205) respectively have arc-shaped chamfers.

6. The washing machine knob inspection tool according to claim 1, characterized in that: The inspection tool boss (2) and the tooling base plate (1) are integrally formed.

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