CN1027408C - Clips that connect the inner shield to the frame - Google Patents

Abstract

A clip for connecting the inner shield and frame of a cathode ray tube, comprising a first elastic bending part, which forms the peak of the clip and is bent into an angle of 60 to 90 degrees; the first change part is formed by the first The extension part of the elastic bending part is bent inward; the second bending part is formed by bending the extension part of the first bending part outward; the second elastic bending part is bent into a U by the extension part of the second bending part Formed; the grip part is the downward extension of the second elastic bend. The clip of the present invention is in a form that is convenient for manual manipulation and is not subject to the orientation requirements encountered in rectangular mounting holes.

Description

Clip for coupling inner shield with frame

The present invention system is about being fixed on inner shield the connection clip on the frame for cathode ray tube.

Have the framework that shadow mask is installed on the cathode ray tube, particularly shadow mask type cathode-ray tube, the inner shield that shadow mask also can be installed the maskable influence of magnetic field not only is housed on this framework.

Because their architectural characteristic difference, want that it is impossible that one is made in framework and inner shield.Therefore, they are to make respectively, and are bound up on together in assembly technology.In assembling process, need a kind of clip when connecting framework and inner shield, this clip must satisfy following three conditions: the first, the connecting performance of clip must be fully, and inner shield should not produce the vibration vibration when bearing external force; The second, the productivity ratio of clip must be good; Should be easy between the 3rd inner shield and framework connect.

As shown in fig. 1, common clip comprises that self has the V-shaped elastic part A of elasticity, the shoulder S of a pair of symmetry of extending in opposite direction from this elastic part A, and a pair of handle portion B that extends from above-mentioned shoulder S.When inner shield repeatedly place framework F to go up and with it in conjunction with the time, the hole H that is installed can match with framework F.Then, clip is inserted in the hole that is installed and between elastic part A and shoulder S, inner shield and framework are tied.

An example of the common clip of this class is the clear 55-154041 of Japanese Unexamined Patent Publication No.Another example then is Japanese patent laid-open No. sho 62-13787.

Fig. 2 shows the clear 55-154041 of Japanese Unexamined Patent Publication No.According to this device, insert elastic supporting piece in the hole that on shadow mask frame and magnetic screen device, forms and will keep the shadow mask frame of shadow mask and the magnetic screen that shields external magnetic field to be fixed together.Supporting member is formed as follows: they are V-arrangement, the middle part of both sides has negative area 21 inwardly outstanding, leading section 25 extends to a pair of sweep 22 that is acute angle, and the rearward end 24 of V-arrangement clip extends to another respectively to sweep 23, and sweep 23 outwards disposes from negative area 21.This clip system is used for color picture tube.

The example of another prior art, i.e. Japanese patent laid-open No. sho 62-13787.Be shown among Fig. 3, this device system is used for shadow mask type colour tube.This device is the V-arrangement form of springs, comprise a sweep 31, the neck 32 of pair of engaging in the hole of scaffold and shielding element, front and back at neck 32, first shoulder 33 and second shoulder 34 are arranged, and first shoulder 33 forms between sweep 31 and neck 32, and the width of second shoulder 34 is greater than the width of first shoulder 33.

Two above-mentioned prior art examples all lay stress on two conditions in aforementioned three conditions.That is, their focal attentions are in the associativity and the productivity of clip, and have ignored the usability of clip.

Above-mentioned two routine clips are mild V-arrangement, and by manual installation, yet by the part of workman's grasping, promptly two of the V-arrangement clip ends are oblique.Therefore be easy to slippage from workman's hand.If slippage from workman's hand when the grasping clip, then clip ejects owing to himself elastic force, causes that thus work delay and element lose.

The objective of the invention is to propose that a kind of not only its associativity and productivity are acceptables be installed linkage element on framework of inner shield, its usability is also very superior.

Inventor's design is: being actually the inner shield of inserting common clip and establishing is rectangle with the hole that is installed of framework, if circle is made in the hole that will be installed, and clip also makes the be installed shape in hole of suitable circle, and then usability will improve greatly.

In order to achieve the above object, according to the present invention, be used for the inner shield of cathode ray tube and the clip of framework connection are constructed as follows: it is bent into the 60 approximate V-arrangements to an angle of 90 degrees, comprise a pair of first turn of bilge in addition, their forming V-shapes that bends inwards in the extension of the first elasticity turn of bilge of the angle end at the top of clip form, and are giving clip from first elasticity turn of bilge a distance with elasticity; A pair of second bending part, they by on the position of the bent angle certain distance of first bending part with the outwards bending and forming of the extension of first turn of bilge.

The a pair of second elastic bending part branch, they are in a distance, bight apart from this second turn of bilge, the extension of second bending part are bent into U-shaped forms; And a pair of grip, they are downward extensions of the second elasticity turn of bilge, grip then is endowed elasticity owing to this second elasticity turn of bilge, and inner shield and framework then are being bound up on the obliquity of first turn of bilge between second turn of bilge and on two lower end positions of grip.The front end of above-mentioned grip can have the spike of one or more dihedrals or have the semilune spike that cuts the summit planar section.

Describe most preferred embodiment of the present invention in detail by the reference accompanying drawing, above-mentioned purpose of the present invention and advantage will be obviously as seen.

Wherein:

Fig. 1 is the perspective view of common its application example of framework clip of expression.

Fig. 2 is illustrated in the profile that connects state between framework and inner shield with common clip.

Fig. 3 is illustrated between framework and the inner shield with the another kind of profile of using the connection state of clip always.

Fig. 4 is the perspective view of an embodiment of expression clip of the present invention.

Fig. 5 is illustrated in the connection state profile that uses clip as shown in Figure 4 between framework and the inner shield.

Fig. 6 a is the perspective view of the other embodiment of expression clip of the present invention, and wherein grip has produced change.

Fig. 6 b, 6c and 6d also represent the perspective view of the other embodiment of clip of the present invention, and partial enlarged drawing wherein only is shown.

Fig. 4 is the perspective view of an embodiment of clip of the present invention.As shown in FIG., this clip is bent into the V-arrangement at 60-90 degree angle, forms the first elasticity turn of bilge 1 therefrom.Leaving two parts of the first elasticity turn of bilge, 1 a certain distance with the V-arrangement clip forming V-shape that bends inwards respectively, so formed a pair of first turn of bilge 2.Apart from first turn of bilge a certain distance, two extensions of first turn of bilge 2 are outwards bent forming V-shape just formed a pair of second turn of bilge 3.Extension with second turn of bilge 3 forms U-shaped in bend about 180 degree apart from second turn of bilge, 3 a certain distances again, has just formed a pair of second elasticity turn of bilge 4.The sponson of the second elasticity turn of bilge 4 has constituted the grip 5 for the usefulness of user's grasping.And between the grip 5 and the first elasticity turn of bilge 1 and first turn of bilge 2 part roughly on same straight line.

Shown in Fig. 6 a, also can be with the mid portion jack-knife of grip 5, so grip 5 has just formed outwardly open flute profile.The front end of grip 5 can have outstanding bight or recessed bight, so that they respectively have one or two spike as shown in Fig. 6 b and Fig. 6 c.

If the aforesaid clip of the present invention of structure is inserted in the hole that is installed of framework and inner shield, then as shown in Figure 5, the be installed marginal portion in hole of framework will contact with the sloping portion that forms between first turn of bilge 2 and second turn of bilge 3, the upper surface of inner shield simultaneously will with the preceding end in contact of grip.

The connecting function of clip of the present invention is not only by the elastic force of the first elasticity turn of bilge 1 but also is that elasticity by the second elasticity turn of bilge 4 realizes.So the clip that clip of the present invention can compare in the common technology in its connection state applies bigger pressure.Based on the wedge principle of uniformity, the contact angle (angle θ among Fig. 5) between framework and the sloping portion between first turn of bilge 2 and second turn of bilge 3 is littler, then above-mentioned pressure is bigger.

And then, if an end of grip 5 is not flat, but one or two spike is arranged, then contacting between the upper surface of the front end of this grip 5 and inner shield will not be the line contact but put contact, and this just greatly reduces the possibility of grip front end slippage on the upper surface of inner shield.

Again if the mid portion of grip 5 bends out an aforesaid mild angle, then can further improve the contact between the upper surface of the front end of grip 5 and inner shield.Simultaneously also can be the user part convenient to grasp is provided.In other words, as described above, summit angle according to clip of the present invention is the 60-90 degree, thereby can reduce can slippage from user's hand to clip of the present invention worry, if and in the bending gently of each grip middle part of clip, then this worry also can further be eliminated.

As above-mentioned, common clip system makes and is applicable to rectangular opening, but clip of the present invention curves 60-90 degree angle in the peak maximum.Thereby clip of the present invention both can be used for the circle hole that is installed and also can be used for the rectangle hole that is installed.The hole if the use circle is installed, then directionless (horizontal or vertical) requirement, therefore, except that above-mentioned, can also obtain and following additional advantage:

The first, provide convenience aspect the piercer that on inner shield and framework, forms the hole that is installed and the mould making and repair.

The second, as shown in Fig. 6 d, being installed between circular port at clip and framework forms at 4 and contacts, thereby can prevent any slip of clip.

Three, in the time of in circle that clip of the present invention is packed into is installed the hole, its operative orientation of needn't worrying, promptly clip is with respect to the position in this hole that is installed, so operating efficiency improves.

Claims (3)

1. A clamp for connecting the frame of a cathode ray tube and the inner shield, comprising: a first elastic bending part, which forms a sharp end of the clamp, and the first elastic bending part endows the above-mentioned clamp with elasticity; For the first bending part, they are formed by bending the extension part of the above-mentioned first elastic bending part inwardly into a V shape at a certain distance from the above-mentioned first elastic bending part; The extended part of the bent part is bent outward into a V shape at a certain distance from the first bent part; It is bent at a certain distance; and a pair of grasping parts; it is characterized in that: the first elastic bending part is bent into an angle of 60 to 90 degrees, and the second elastic bending part is bent into a U shape, and the above-mentioned grasping part is the above-mentioned The downward extending part of the second elastic bending part gives elasticity to the grip part by means of the second elastic bending part, and the above-mentioned inner shield and the above-mentioned frame are connected between the above-mentioned first bending part and the above-mentioned second bending part to form between the sloped portion and the lower end of the aforementioned grip portion. 2. The clamp for connecting the inner shield and the frame of a cathode ray tube as claimed in claim 1, wherein the front end of the above-mentioned gripping part can have one or more angular peaks or have peaks cut off Half-moon-shaped spikes on the flat part. 3. The clip for connecting the inner shield and the frame of a cathode ray tube as claimed in claim 1 or 2, characterized in that: the middle part of the above-mentioned gripping part is bent into a V shape with a gentle angle or bent into a The shape of the arc is such that an outward opening groove is formed on the above-mentioned grasping part.

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