JPH0557981U - Chassis structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a chassis structure that can be easily assembled and disassembled and does not exert extra stress after assembly. [Structure] A front cabinet having a cathode ray tube mounted on the front surface and a chassis base 1 protruding from a bottom plate, and a rear cover 11 separate from the front cabinet for fixing the chassis base 1 are provided. The chassis base 1 is provided with a displacing member 3 for displacing the height before and after being fixed to the fixing portion 12a provided at a predetermined position inside the rear cover 11. Provide structure.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a chassis structure of a heavy display device or the like, and more particularly to a structure for facilitating a work for attaching a rear cover.

[0002]

[Prior Art]

 Currently, the mainstream of display devices is a structure in which a chassis base is placed on the bottom plate of a cabinet, and a front cabinet and a rear cover are split in the middle of the bottom plate, and the CRT is attached to the front cabinet. A chassis base is projected on the front cabinet. With this structure, the rear cover is mounted underneath the chassis base during assembly.

In the conventional chassis structure, as shown in FIG. 10, the rear end of the chassis base 1 is hung as it is, and at the time of mounting, the chassis base 1 is lifted by hand, and the rear cover 11 is mounted by being slid in. Further, as shown in FIG. 11, an arc-shaped leg 13 is provided on a side portion of the chassis base 1 near the rear cover, the chassis base 1 is floated by the leg 13, and the rear cover 11 is inserted into the clearance and fitted. ..

Further, as a further development of the conventional example shown in FIG. 11, a method of providing a slit 14 for penetrating an arc-shaped leg 13 inside the rear cover 11 as shown in FIG. 12 can be considered. The operation when assembling using this structure is shown below. In the initial state shown in FIG. 13, the bottom surface of the chassis base 1 is higher than the top surface of the bottom plate of the rear cover 11. Next, the rear cover 11 is moved in the arrow direction. When the rear cover 11 is moved, the chassis base 1 rides on the rear cover 11 by the action of the arcuate legs 13, and the state shown in FIG. 14 is obtained. When the rear cover 11 is further moved, the arc-shaped legs 13 provided on the chassis base 1 are inserted into the slits 14 provided inside the rear cover 11, and the chassis base 1 is fixed inside the rear cover 11, as shown in FIG. It becomes a state.

[0005]

[Problems to be solved by the device]

 In the case of the conventional example shown in FIG. 10, when the rear cover 11 is attached, the worker assembles the display device by pushing the rear cover 11 while lifting the chassis base 1, so that the workability is significantly impaired. There was a drawback that Further, in the case of the conventional example shown in FIG. 11, when the arc-shaped leg 13 does not make the bottom surface of the chassis base 1 higher than the upper surface of the bottom plate of the rear cover 11, an operator lifts the chassis base 1 as in the conventional example. However, since the display device is assembled by pushing in the rear cover 11, this conventional example also has a drawback that workability is significantly impaired.

However, by simply raising the arc-shaped leg 13 so that the rear cover 11 can easily enter the gap below the chassis base 1, the above-mentioned work-related drawback of an operator lifting the chassis base 1 is solved. However, since the rear part of the chassis base 1 after assembly is raised by the height of the arc-shaped legs 13, bending stress acts on the substrate, which causes damage such as pattern peeling of the substrate. Occurs.

Therefore, when the height of the arc-shaped leg 13 is set higher than the thickness of the rear cover 11, in order to prevent the rear portion of the chassis base 1 after connection from becoming higher, as shown in FIG. The above-described structure in which the slit 14 that penetrates the arc-shaped leg 13 is provided can be considered. However, when the arc-shaped leg 13 is inserted in the slit 14, the arc-shaped leg 13 penetrating the slit 14 contacts the top plate of the table on which the display device is placed, and the rear part of the chassis base is raised to the substrate. Bending stress works. Then, there arises a drawback that the stress causes damage to the substrate. Furthermore, after assembly, the arc-shaped leg 13 penetrates the slit 14, which makes it difficult to remove it easily, and there is a problem in terms of serviceability.

[0008]

[Means for Solving the Problems] Therefore, in order to solve the above problems, according to the present invention, a cathode ray tube is attached to the front surface, and the chassis base is fixed to the front cabinet in which the chassis base is projected on the bottom plate. A front cover separate from the front cabinet, and a displacement member for height-displacement before fixing the chassis base at a predetermined position inside the rear cover and after fixing the chassis base. A chassis structure characterized in that the chassis structure is provided.

[0009]

[Action]

 With the configuration described above, the displacement member holds the bottom surface of the chassis base at a position higher than the top surface of the bottom plate of the rear cover before the chassis base is assembled into the rear cover. Allows you to easily position the chassis base on the bottom plate of the rear cover without having to lift it by hand. After that, the displacement member starts displacement and lowers the position of the chassis base. Then, it is assembled and fixed at a predetermined position.

[0010]

【Example】

 Hereinafter, embodiments of the chassis structure according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention, and FIGS. 3 to 6 are sectional views showing the operation of the embodiment of the present invention.

As shown in FIG. 1, the chassis structure of the present invention includes a guide rib formed inside a rear cover 11 and including an inclined guide portion 12b and a recess 12a (fixed portion) provided at a lower end of the inclined guide portion. 12 are provided. A shaft 2 is provided on a side portion of the chassis base 1 near the guide rib 12, and a displacement member 3 having a semicircular plate having a horizontal portion and an arc portion provided with an attachment hole 5 is attached to the shaft 2. Further, an elastic support member 4 for supporting the displacement member 3 is provided on the side of the chassis base 1.

The mounting hole 5 of the displacement member 3 is provided near one end 3a near the rear cover 11 that connects the horizontal portion and the arc portion of the semicircular plate. The other end 3b is present on the opposite side of the one end 3a.

The support member 4 supports the horizontal portion of the displacement member 3, and when the displacement member 3 is supported by the support member 4, the displacement member 3 projects below the chassis base 1 to a height higher than the upper surface of the bottom plate of the rear cover 11. I am trying to do it. Then, as the displacement member 3 rotates, the chassis base 1 descends, and the displacement member 3 is finally displaced to a position where it does not project below the chassis base 1.

Next, the operation of this embodiment will be described. FIG. 3 shows the state immediately before the rear cover 11 goes under the chassis base 1, but since the displacement member 3 is supported by the support member 4, the bottom surface of the chassis base 1 is the bottom plate of the rear cover 11. It is held higher than the top surface. Further, at this time, the rear cover 11 is moving in the arrow direction.

When the rear cover 11 goes under the chassis base 1, as shown in FIG. 4, the rear cover 11 moves in the direction of the arrow until it hits the inclined guide portion 12b formed on the guide rib 12 in a state where the chassis base 1 is lifted. move on.

When the chassis base 1 abuts the inclined guide portion 12b, the chassis base 1 receives a diagonally downward force as shown in FIG. 5, and the supporting member 4 is displaced inward by the force and is disengaged from the displacement member 3. The displacement member 3 starts rotating around the axis 2.

When the displacement member 3 rotates, the chassis base 1 moves down the slope of the guide rib 12. Then, as shown in FIG. 6, the displacement member 3 rotates to a position where it does not project below the chassis base 1, and the rear end portion of the chassis base 1 is guided to a predetermined position by the inclined guide portion 12b inside the rear cover 11. , Is fitted and fixed in a concave portion 12a (fixed portion) formed at the lower end of the inclined guide portion 12b.

With this configuration, since the bottom surface of the chassis base 1 is located higher than the upper surface of the bottom plate of the rear cover 11 during assembly, an operator lifts the chassis base 1 and pushes in the rear cover 11. Since it is not necessary to carry out, it becomes possible to easily assemble and improve the productivity and serviceability. Further, since the displacement member 3 does not project below the chassis base 1 even after assembly, stress on the substrate can be reduced and damage to the substrate such as pattern peeling can be avoided. Further, by providing the inclined guide portion 12b inside the rear cover 11, the chassis base 1 can be guided to a predetermined position, and by providing the fixing portion 12a at the lower end of the inclined guide portion 12b, the chassis base 1 is fixed at a lower position. be able to. In this case, since the chassis base 1 is not fixed in the pulling direction, it can be easily disassembled and serviceability is improved.

Next, another embodiment of the present invention will be described. FIG. 2 is a perspective view showing another embodiment of the present invention, and FIGS. 7 to 9 are sectional views showing the operation of another embodiment of the present invention.

In the chassis structure of the present invention, as shown in FIG. 2, the displacement member 7 is a movable leg, and the fixed portion 12a is provided inside the rear cover 11. A mounting hole 9 is provided in a side portion of the chassis base 1 near the fixed portion 12a, a shaft 10 provided on the movable leg 7 is inserted into the mounting hole 9, and a bearing 6 that holds the shaft 10 is inserted. Further, a support member 8 for preventing the movable leg 7 from moving toward the rear cover 11 is provided on a side portion of the chassis base 1 closer to the fixed portion 12a than the mounting hole 9. In this case, the movable leg 7 can move in the direction in which the support member 8 does not exist.

Further, the operation of this embodiment will be described. FIG. 7 shows a state immediately before the rear cover 11 goes under the chassis base 1, but since the movable leg 7 is supported by the support member 8, the bottom surface of the chassis base 1 is the upper surface of the bottom plate of the rear cover 11. Is held higher. The rear cover 11 is moving in the direction of the arrow.

When the rear cover 11 goes under the chassis base 1, it is pushed by the front end of the bottom plate of the rear cover 11 moving in the direction of the arrow, and the movable leg 7 falls in the direction of the arrow as shown in FIG. Falls on the rear cover 11.

Then, when the rear cover 11 is further pushed in, the movable leg 7 is displaced to a position where it does not project below the chassis base 1 as shown in FIG. 9, and the rear end portion of the chassis base 1 has a fixed portion inside the rear cover 11. 12a is fitted and fixed at a predetermined position.

With this configuration, since the bottom surface of the chassis base 1 is located higher than the upper surface of the bottom plate of the rear cover 11 during assembly, the operator lifts the chassis base 1 and pushes in the rear cover 1. Since it is not necessary to assemble, it is possible to easily assemble, and productivity and serviceability are improved. Further, since the movable leg 7 does not project below the chassis base 1 even after assembly, stress on the substrate can be reduced, and damage to the substrate such as pattern peeling can be avoided. Further, by providing the fixing portion 12a inside the rear cover 11, the chassis base 1 can be fixed at a low position. In this case, since the chassis base 1 is not fixed in the pulling direction, it can be easily disassembled and the serviceability is improved.

[0025]

[Effect of the device]

 With the above-described configuration and operation, the bottom surface of the chassis base is located higher than the top surface of the bottom plate of the rear cover during assembly, so that the operator does not have to lift the chassis base and push in the rear cover. Therefore, it is possible to easily assemble, and the productivity and serviceability are improved. In addition, since the displacement member does not project below the chassis base even after assembly, stress on the substrate can be reduced and damage to the substrate such as pattern peeling can be avoided. Further, by providing the fixing portion, the chassis base can be fixed at a low position, and it is possible to reduce the bending stress applied to the substrate which is caused by a shock such as a drop during transportation. In addition, since the chassis base is not fixed in the pulling direction, it can be easily disassembled, and the serviceability is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing another embodiment of the present invention.

FIG. 3 is a sectional view showing an initial state of an embodiment of the present invention.

FIG. 4 is a sectional view showing a second state of the embodiment of the present invention.

FIG. 5 is a sectional view showing a third state of the embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a completed connection state according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view showing an initial state of another embodiment of the present invention.

FIG. 8 is a sectional view showing an intermediate state of another embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a connection completed state of another embodiment of the present invention.

FIG. 10 is a sectional view showing a conventional chassis structure.

FIG. 11 is a sectional view showing a conventional chassis structure.

FIG. 12 is a perspective view when a slit is provided inside the rear cover.

FIG. 13 is a cross-sectional view showing an initial state of a conventional example.

FIG. 14 is a cross-sectional view showing a second state of the conventional example.

FIG. 15 is a cross-sectional view showing a connection completion state of a conventional example.

[Explanation of symbols]

 1 chassis base 2 axis 3 displacement member 3a one end 3b other end 4 support member 5 mounting hole 6 bearing 7 movable leg (displacement member) 8 support member 9 mounting hole 10 axis 11 rear cover 12 guide rib 12a fixing means 12b tilt guide portion 13 arc Shaped 14 slits

Claims (3)

[Scope of utility model registration request] 1. A front cabinet having a cathode ray tube attached to a front surface thereof and a chassis base protruding from a bottom plate, and a rear cover separate from the front cabinet for fixing the chassis base, the chassis base being the rear cover. A chassis structure, wherein a displacement member for displacing the height before and after being fixed to a fixing portion provided at a predetermined position inside the chassis base is provided on the chassis base. 2. A guide rib having an inclined guide portion for guiding the chassis base to a predetermined position inside the rear cover, and a fixing portion provided at a lower end of the inclined guide portion for fixing the chassis base. The displacement member is formed of a semi-circular plate having a horizontal portion and an arc portion, and a position near one end of the guide rib that connects the horizontal portion and the arc portion is located near the guide rib chassis base. The chassis structure according to claim 1, further comprising a support member rotatably attached to a side end portion of the chassis base, the support member supporting the horizontal portion until the chassis base abuts the inclined guide portion. 3. The movable member is used as the displacing member, and the movable member is rotatably attached to a side portion of the chassis base near the fixed portion, and a support member for preventing the movable leg from moving toward the fixed portion is provided. The chassis structure according to claim 1, wherein the chassis structure is provided near a side of the displacement member near the fixed portion.