CN2312483Y - The supporting device of the original surface glass of the optical scanner - Google Patents

Abstract

A bearing device for the glass of original manuscript surface of optical scanner is composed of multiple frame members with high strength and rigidity for clamping and fixing the glass on the original manuscript surface, so increasing the strength and rigidity of bearing device. And can be finely adjusted by a fastener combined with the optical scanner, so that the flatness can be adjusted to ensure the precision of the optical scanner, and the quality of image scanning can be ensured.

Description

The supporting device of the original surface glass of the optical scanner

The utility model relates to a bearing device for placing glass on the surface of a manuscript in an optical scanning machine.

The currently known glass supporting device of an optical scanning machine is a frame 12 placed on a housing 3 (as shown in FIG. 1 ), with an adhesive 13 between the glass 11 and the frame 12 . When performing a scanning operation, the original document is placed face down above the glass 11 , and the optical scanning mechanism in the casing 3 of the optical scanner 1 performs image scanning through the glass.

Apparently, the flatness of the glass 11 is one of the important factors to ensure that the scanned copy is faithful to the original manuscript in terms of its ratio to the original manuscript, its color, and the relative position of each object. If the flatness of the glass 11 is poor, it is very likely to cause image distortion with the original document and affect the scanning quality. There are many factors affecting the flatness, among which the deformation of the shell is not easy to control, and its accumulated error is far beyond what the glued glass structure can make up. The flatness of the glass 11 is one of the key factors affecting the precision of the optical scanning machine. As shown in Figure 1, the adhesive 13 has volume and height, although this height is extremely small compared to the size of other parts of the scanner, however, for the wavelength of the light source used, even if it is extremely thin The adhesive layer, the height of the adhesive 13 can not be ignored. Since the coating thickness of the adhesive 13 cannot be consistent, coupled with the original tolerance of the optical scanning machine, the overall scanning accuracy will be affected.

In addition, when the carrier glass 11 is in use, it is impossible to achieve a uniform distribution of force. If the adhesive 13 is brittle after solidification, it is easy to damage the adhesive surface under the condition of uneven stress; And in the case of uneven force, it may cause unequal plastic deformation of the adhesive on the edge of the glass 11, which will also affect the accuracy of the optical scanning machine. If the carrying device is applied to a more precise optical scanning machine in which the original document surface moves, the phenomenon of uneven force on both sides of the glass 11 will be even more difficult to grasp for the scanning accuracy.

The purpose of this utility model is to provide a bearing device for the original surface glass of an optical scanning machine, which can improve the structural strength and flatness, thereby maintaining a certain image scanning quality in the scanning area.

The purpose of this utility model is achieved in the following way: in a bearing device of the original surface glass of a scanning machine with glass and frame, the clamping frame composed of a plurality of frame members includes a bottom frame and an upper frame , the bottom frame consists of at least one left bottom frame and at least one right bottom frame. The left bottom frame is a long plate structure, and a stepped groove is opened above the right side edge. The structure of the right bottom frame and the left bottom frame is symmetrical, and a stepped groove is opened above the left edge, and the glass is placed on the stepped groove of the right bottom frame and the left bottom frame. The upper frame is composed of at least one left upper frame and at least one right upper frame. The left upper frame is a long plate structure, which is placed above the junction of the left bottom frame and the glass, and fixed with the left bottom frame. The upper right frame has the same structure as the upper left frame, and it is placed above the connection between the right bottom frame and the glass, and fixed with the right bottom frame.

In the device of the present invention, a plurality of high-strength and rigid frame components are combined to clamp, fix and position the side of the glass on which the manuscript surface is placed, thereby improving the structural strength and rigidity of the optical scanning machine. Not only does the clamping frame of the utility model have a stronger property of resisting external force, but also the clamping and positioning of the glass are more reliable than the existing frame structure.

When using the optical scanning machine of the utility model to adjust the flatness, it is only necessary to fine-tune the fasteners combined with the optical scanning machine to improve the flatness and ensure the accuracy of the optical scanning machine, thereby ensuring the image scanning the quality of.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a longitudinal sectional view of the original glass bearing device of an existing optical scanner

Fig. 2 is a three-dimensional structure diagram of the original glass bearing device of the optical scanning machine of the present invention

Fig. 3 is the three-dimensional exploded view of the best embodiment of the clamping frame in the utility model device

In the figure, 1. Existing optical scanners 3. Shell 11. glass 12． frame 13. glue

20． Clamping frame 21. Upper frame 22． Bottom frame 213． Upper left box 214． upper right frame

215． Upper horizontal frame 221． Left bottom frame 222． Right bottom frame 2131． first step groove

2141． Second step slot 2151． Limiting wall 2152． third step groove

2153． fourth step groove

In the three-dimensional structure diagram of the utility model device shown in Fig. 2, the glass bearing structure of the manuscript surface has a clamping frame 20 of a flat plate structure, which includes an upper frame 21 and a bottom frame 22, which are used as an optical scanner manuscript surface. The glass 11 on which the substrate is placed is placed between the bottom frames 22, and then the upper frame 21 is placed on the bottom frame 22 and the glass 11, and then fastened with countersunk screws.

FIG. 3 is an exploded perspective view of the best embodiment of the clamping frame 20 of the present invention. In the figure, the bottom frame 22 includes a left bottom frame 221 and a right bottom frame 222 . The upper frame 21 includes a left upper frame 213 and a right upper frame 214 . The left bottom frame 221 is an elongated plate structure, and a stepped groove extending longitudinally is opened above the right edge to support the left side of the glass 11 . The structure of the right bottom frame 222 is symmetrical, and a stepped groove with the same size as the left bottom frame 221 along the longitudinal direction is opened above the left edge to support the right side of the glass 11 . The left upper frame 213 is a long plate structure, and is fixedly combined with the left bottom frame 221 by countersunk screws. The upper right frame 214 has the same structure as the upper left frame 213, and is fixedly combined with the bottom right frame 222 with countersunk screws.

An upper horizontal frame 215 can also be arranged in the upper frame 21. The upper horizontal frame 215 is an elongated plate structure spanning above the front edge of the glass 11, and its two ends are respectively fixed on the left bottom frame with countersunk screws. 221 and the right bottom frame 222.

In this embodiment, a limiting wall 2151 can be extended downwardly to set a limiting wall 2151 below the front edge of the upper horizontal frame 215 to limit the front edge of the glass 11 to fix the glass 11 firmly.

In addition, in order to make the upper frame 21 have the best fixing state and pressing function, a concave third stepped groove 2152 and a fourth stepped groove 2153 can be respectively provided on the rear edges of the left and right ends of the upper horizontal frame 215, and It is fitted with the protruding first stepped groove 2131 on the front of the left upper frame 213 and the protruding second stepped groove 2141 on the front of the right upper frame 214 respectively.

The material of the frame structure of the present invention can be made of metal or alloy with good mechanical properties (such as strength, rigidity and toughness), such as aluminum alloy.

When in use, if the carrying device of the manuscript surface glass of the present utility model is applied to a fixed optical scanner on the manuscript surface, then only the left bottom frame 221 and the right bottom frame 222 of the utility model device need to be used with countersunk screws ( or other combination methods) can be fixed on the housing of the optical scanning machine. If the device of the present invention is applied to an optical scanning machine in which the document surface moves, it is only necessary to fix the left bottom frame 221 and the right bottom frame 222 on the document surface moving mechanism of the optical scanning machine.

When adjusting the flatness on the optical scanning machine on which the device is installed, it is only necessary to fine-tune the screws (or other combining parts) combined with the optical scanning machine.

Claims (5)

1, a kind of bogey of original copy surface glass of optical scanning device, have glass (11) and framework, it is characterized in that: the holding frame (20) that is combined by a plurality of framing components comprises a underframe (22) and a upper ledge (21), and underframe (22) is made up of at least one left underframe (221) and at least one right underframe (222); Left side underframe (221) is a long shaped plate structure, and its right side edge top has a step trough; The structural symmetry of right underframe (222) and left underframe (221), its left side edge top has a step trough, and glass (11) places on the step trough of right underframe (222) and left underframe (221); Upper ledge (21) is made of at least one upper left box (213) and at least one upper right box (214), and upper left box (213) is a long shaped plate structure, and it places the top of left underframe (221) and glass (11) connection, and fixing with left underframe (221); Upper right box (214) is identical with upper left box (213) structure, and it places the top of right underframe (222) and glass (11) junction, and fixing with right underframe (222).

2, bogey according to claim 1, it is characterized in that: upper ledge (21) also includes at least one upper transverse frame (215), upper transverse frame (215) is one to be across a long shaped plate structure of glass (11) forward edge top, and its two ends are fastened on left underframe (221) and the right underframe (222).

3, bogey according to claim 2 is characterized in that: there is a limited wall (2151) below in the front edge of upper transverse frame (215).

4, bogey according to claim 2 is characterized in that: there is a spill step trough at the edge, left end back at upper transverse frame (215), embeds with the outstanding step trough (2131) that has previously in upper left box (213) to cooperate.

5, bogey according to claim 2 is characterized in that: there is a spill step trough at the edge, right-hand member back at upper transverse frame (215), embeds with the outstanding step trough (2141) that has previously in upper right box (214) to cooperate.

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