JP2007109047A - Optical information reader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical information reader whose operability is improved. <P>SOLUTION: In a bar code reader 10, protectors 18 and 19 and a reading port housing 12 to be set with length γ exceeding the height dimension β of the thickness γ direction of a belt 30 from a back face 10b by the maximum outer shape dimension of the back face 10b side including the belt 30 are installed on the back face 10b of the bar code reader 10 so as to be erected to the length direction so that the back face of key switches 21, 22, 23, 24, 25 and 26 can be surrounded. Thus, when the bar code reader 10 is placed on a flat surface G face up, a reading port lower edge part 12d and the protectors 18 and 19 to be set with the length γ exceeding the height dimension β of the thickness direction of the belt 30 are brought into contact with the flat surface, so that the bar code reader 10 is supported. Therefore, even when the belt 30 is installed on the back face 10b, the bar code reader 10 is surely supported by the reading port housing 12 and the protectors 18 and 19, so that the operability of the key switch 21 or the like is improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an optical information reader having a key switch on the front surface and a belt on the back surface.

  Conventionally, as an optical information reading apparatus in which a key switch is provided on the surface of the apparatus main body and a belt is provided along the back surface of the apparatus main body, for example, there is one disclosed in Patent Document 1 below.

  In the “optical information reading device” disclosed in Patent Document 1, as shown in FIG. 3 in the same document, a belt (99) is provided on the bottom surface of the device (the back surface of the device main body) along the longitudinal direction of the device. Is provided. For example, a person who operates the device inserts one hand into the belt (99) and wraps the device with a palm and grips the device from the bottom surface (back surface), so that the other hand can touch the surface of the device. The operation panel (19) can be operated. Thereby, even if the hand holding the device is loosened or slipped, the device is not released from the hand so that it is difficult to drop the device.

Japanese Patent Laid-Open No. 6-236451 (paragraph number 0106, FIG. 3)

  However, according to the technology disclosed in Patent Document 1, the bottom surface (back surface) of the device is not particularly provided with a protrusion protruding from the bottom surface of the device in addition to the belt (99). For this reason, for example, when the apparatus is placed face up on a flat surface such as a work table or an office desk, the apparatus has a belt (99) extending substantially linearly in the longitudinal direction of the flat surface. ) Will be supported. In this way, when the device supported on the back surface in a straight line in the longitudinal direction is operated with the operation panel (19) on the front surface, the belt (99) is used as a center in the short (width) direction of the device. Since the possibility of shaking is high, there is a problem that it is difficult to push the shaking key switch in the width direction every time the key switch is pressed during the operation.

  The head portion (11) through which the reading port (14) of the device opens is formed to have a “neck bend shape” that tilts forward in the direction of the bottom surface (back surface) of the device. For this reason, the device having such a “neck bend shape” is not suitable when the device is placed on a flat surface as compared with a so-called straight type optical information reading device that does not have such a bent head portion. Since the lower end portion of the reading port (14) of the head portion (11) serves as a support extending in the short (width) direction with respect to the flat surface, there is little unevenness in the width direction.

  However, from the whole apparatus, even if the apparatus main body that extends in the longitudinal direction compared to the short direction is supported in the short (width) direction on the reading port side (one end side), the opposite side (the other end side) ) Has almost no support in the short (width) direction. That is, when the reading port side (one end side) of the apparatus is set to the upper side and the opposite side (the other end side) is set to the lower side, the support for the flat surface is “T-shaped”, and the operation panel (19) Is located on the lower side of the “T-shape” with less support in the short (width) direction.

  For this reason, even if it has a head portion (11) that has a `` bend-shaped shape '', when the device is placed on a flat surface, the glare of the device during operation of the operation panel (19) is suppressed. It is hard to do. Therefore, for example, when the device is placed on an office desk and data entry is attempted from the operation panel (19), the operation panel (19 ), And even if such a desk or table is close to you, you may have to operate the operation panel (19) while holding the device. There is a problem of becoming.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical information reader capable of improving operability.

  In order to achieve the above object, in the optical information reading device according to claim 1, the optical information to be read and information relating to the operation of the optical information reading device are provided on the surface of the device main body so as to be input. An optical information reader comprising: a key switch, and a belt provided along a back surface of the device main body and capable of sandwiching a hand of a person holding the device main body from the back surface between the back surface. A support portion that is set to a length that exceeds the height dimension in the thickness direction of the belt from the back surface with a maximum external dimension on the back surface side of the apparatus main body including the belt, and stands in the length direction. It is a technical feature that four or more portions are provided on the back surface of the apparatus main body so as to surround the back surface of the key switch.

  The “information code” is not limited to a one-dimensional code (EAN / UPC, interleaved 2 of 5, coder bar, code 39/128, standard 2 of 5, RSS, etc.), and a two-dimensional code (QR code, PDF417). , Data matrix, maxi code, RSS composite, etc.). In addition, the “maximum external dimension” is a minimum dimension of a rectangle (rectangle, square) necessary to include the outline of the apparatus main body including the protrusion (hereinafter the same).

  In the optical information reading device according to claim 2, incident light coming from the reading object is incident on a reading port forming portion that is inclined forward in the back surface direction at one end side of the device main body. The optical information reading device according to claim 1, wherein a possible reading port is formed, wherein the height in the thickness direction of the belt from the back surface is the maximum external dimension on the back surface side of the device body including the belt, When determined by a predetermined portion of the reading port forming portion, the predetermined portion of the reading port forming portion functions as the support portion instead of the support portion to be provided on the one end side.

  In the optical information reading device according to claim 3, wherein the support portion is configured to directly or at least one end side or the other end side of the belt in the optical information reading device according to claim 1 or 2. It is indirectly fixed to the back surface.

  According to the first aspect of the present invention, the support portion set to a length exceeding the height dimension in the thickness direction of the belt from the back surface with the maximum outer dimension on the back surface side of the apparatus main body including the belt is set up in the length direction. In order to surround the back surface of the key switch, it is provided at four or more locations on the back surface of the apparatus main body. Thereby, for example, when the device is placed face up on a flat surface such as a work table or office desk, the support portion set to a length exceeding the height dimension in the thickness direction of the belt is The device is supported by contacting the flat surface prior to the lower belt and other protrusions. And since such a support part is provided in four or more places, and a key switch is located in the range surrounded by these, the pressing force applied when pressing a key switch supports four or more places surrounding it. It is transmitted to the said flat surface through a part. For this reason, even when the key switch is operated, the device can be reliably supported by these four or more support portions. Therefore, even when the device is placed on a flat surface, the information input operation by the key switch is performed. Can be performed in a stable state. Therefore, the operability of the apparatus provided with such a belt can be improved.

  In the second aspect of the invention, when the height in the thickness direction of the belt from the back surface is determined by a predetermined portion of the reading port forming portion with the maximum external dimension on the back surface side of the apparatus main body including the belt, the predetermined value of the reading port forming portion is determined. The part functions as a support part instead of the support part to be provided on one end side. Therefore, when such a reading port forming portion is provided at one end of the device, the operability of the device can be improved without providing a support portion on the one end side.

  In the invention of claim 3, the support portion fixes at least one end side or the other end side of the belt directly or indirectly to the back surface. As a result, it is possible to reduce the number of fixing members for fixing the belt to the back surface of the apparatus, and it is not necessary to provide a separate member, thereby reducing the number of parts. Therefore, the operability of the apparatus can be improved and the manufacturing cost of the apparatus can be reduced.

Hereinafter, each embodiment in which the optical information reading apparatus of the present invention is applied to a barcode reader will be described with reference to FIGS.
[First Embodiment]
First, the configuration of the barcode reader 10 according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan view of the barcode reader 10 as viewed from the front surface, and shows the positions of the support portion and the belt provided on the back surface from the front surface. 2 is a perspective view showing the external structure of the barcode reader. FIG. 1 (A) shows what is seen from above the front surface, and FIG. 1 (B) shows what is seen from below the back surface. ing.

  As shown in FIGS. 1 and 2A, the external shape of the surface 10a of the barcode reader 10 is mainly constituted by a main body housing 11, a liquid crystal display 13, and a keyboard 20. That is, the liquid crystal display 13 is attached to one end side 11a of the main body housing 11, and the keyboard 20 for arranging various key switches at predetermined positions is provided on the other end side 11b of the main body housing 11. . A trigger switch 17 that is pressed when irradiating irradiation light is provided on the substantially central side surface of the main body housing 11.

  On the other hand, as shown in FIG. 2B, the back surface 10b of the barcode reader 10 is mainly configured by the main body housing 11, the reading port 12a, the protectors 18, 19 and the belt 30. That is, a reading port housing 12 having a reading port 12a is attached to one end side 11a of the main body housing 11, and the bar code reader 10 is dropped at the corner of the other end side 11b of the main body housing 11. Protectors 18 and 19 are attached, which can reduce the impact received when they are equal. Furthermore, a belt-like belt 30 is provided on the back surface 10b along the back surface 10b.

  The reading port housing 12 has a “neck bend shape” so as to tilt forward in the direction of the back surface 10b of the barcode reader 10, and a reading port 12a capable of receiving reflected light (incident light) reflected on the barcode or the like. Is formed. In this embodiment, the reading port housing 12 not only forms the reading port 12a but also the thickness of the belt 30 to which the reading port lower end portion 12d is attached to the back surface 10b among the peripheral portion forming the reading port 12a. It is configured to protrude most in the direction. Accordingly, the reading port lower end portion 12d also functions as a support portion as will be described later. Note that each of the reading port housing 12 and the main body housing 11 described above is a molded part made of a synthetic resin such as ABS resin.

  The protectors 18 and 19 are molded parts made of, for example, an elastomer or natural rubber, and are provided so as to cover both corners of the other end side 11b of the main body housing 11 as described above. Although these protectors 18 and 19 originally have a role of absorbing or mitigating impacts received from the outside due to dropping or the like, in this embodiment, by setting the length in the height direction large, It is comprised so that it may protrude in the said thickness direction rather than the thickness of the belt 30 to which it is attached. As a result, the lower end portions 18a and 19a of the protectors 18 and 19 also function as support portions, as will be described later.

  In the present embodiment, the protectors 18 and 19 are configured so that both ends of the rod-shaped belt thread 32 can be fixed, so that the belt 30 can be indirectly attached to the main body housing 11. That is, one end of the belt loop 32 is inserted into a hole (not shown) of the protector 18 and the other end of the belt loop 32 is inserted into a hole (not shown) of the protector 19. The protectors 18 and 19 are fixed to the main body housing 11 with both ends sandwiched therebetween. As a result, the belt loop 32 is attached to the main body housing 11 at both ends via the protectors 18 and 19, so that the belt 30 passed through the belt loop 32 can be indirectly attached to the main body housing 11. Become.

  The keyboard 20 has various key switches arranged at predetermined positions to enable input of information related to information codes such as barcodes and information related to operations of the barcode reader 10, for example, a power switch 21, numeric / symbol keys, and the like. 22, an enter key 23, a direction key 24, a trigger key 25, a function key 26, etc. are held so as to be aligned. Each of these key switches is electrically connected to a printed wiring board (not shown) accommodated in the main body housing 11, and can output on / off information to a microcomputer (hereinafter referred to as "microcomputer") to be described later. It is configured as follows. As will be described later, the arrangement of the keyboard 20 as a whole is within a range surrounded by the reading port lower end portion 12d of the reading port housing 12, the lower end portion 18a of the protector 18, and the lower end portion 19a of the protector 19, which function as a support portion. It is set to be located.

  The belt 30 is, for example, a belt-shaped member made of synthetic fiber, and the width thereof is set to such an extent that an operator's hand holding the barcode reader 10 from the back surface 10b can be sandwiched between the back surface 10b. Yes. A fixing metal 31 is fixed to one end side of the belt 30, and is fixed to a belt attaching portion 14 formed in the main body housing 11 via the metal fixing 31. On the other hand, a cloth tape detachably attached to one end side is attached to the other end side of the belt 30. As a result, the other end side of the belt 30 is passed through a belt loop 32 fixed to the protectors 18 and 19 and folded back to one end side of the belt 30 to be engaged with the one end side via a cloth tape. It becomes possible. In addition, since the engagement between the one end side and the other end side by the cloth tape is configured so that the engagement position can be changed, the belt 30 and the back surface can be changed by changing the position. It is possible to adjust a gap formed between the first and second terminals 10b, that is, an interval at which an operator's hand enters.

  Although not shown in the figure, the bar code reader 10 reads a light source capable of emitting irradiated light in the main body housing 11 and reflected light reflected by the irradiated light on an information code such as a barcode. A light receiving element capable of receiving light through the opening 12a, an imaging optical system capable of condensing the reflected light to form an information code image on the light receiving surface of the light receiving element, and an image signal output from the light receiving element. It contains a microcomputer that can be decoded and a printed wiring board on which various circuit components and optical components are mounted. For example, code information based on the read bar code is displayed on the liquid crystal display 13 or by infrared rays or radio not shown. It is configured to be able to output to the outside via a communication interface.

  Next, the range surrounded by the reading port lower end 12d of the reading port housing 12 and the lower ends 18a and 19a of the protectors 18 and 19 will be described with reference to FIG. 3A shows the maximum outer dimensions of the back side of the barcode reader 10 as viewed from the side in the width direction, and FIG. 3B shows the range.

  As shown in FIG. 3A, the maximum external dimension of the barcode reader 10 viewed from the side surface in the width direction is the horizontal length of the flat surface G when the barcode reader 10 is placed on the flat surface G. It is expressed by the height L and the height H in the vertical direction from the flat surface G. Of the height H in the vertical direction, the maximum value of the height from the flat surface G to the back surface 10b of the barcode reader 10 is the maximum external dimension on the back surface 10b side of the barcode reader 10.

  For this reason, in the present embodiment, as described above, the reading port lower end portion 12d of the reading port housing 12 protrudes most toward the back surface 10b, and therefore, the protruding amount α of the reading port lower end portion 12d is equal to that of the barcode reader 10. This is the maximum external dimension on the back surface 10b side. On the other hand, as described above, the protectors 18 and 19 are set to a length exceeding the height β in the thickness γ direction of the belt 30, so that the protrusion amount δ is smaller than the reading port lower end portion 12 d. Since the belt 30 protrudes toward the back surface 10b, the protectors 18 and 19 can support the barcode reader 10 together with the reading port lower end portion 12d. That is, the reading port lower end portion 12d of the reading port housing 12 and the lower end portions 18a and 19a of the protectors 18 and 19 can function as support portions, respectively.

  On the other hand, the reading port lower end portion 12 d of the reading port housing 12 and the lower end portions 18 a and 19 a of the protectors 18 and 19 that can function as a support portion surround the keyboard 20. That is, an imaginary line h connecting one end side of the reading port lower end portion 12d (the upper side in FIG. 3B) and the lower end portion 19a, an imaginary line i connecting the lower end portion 19a and the lower end portion 18a, and a lower end portion 18a and reading. An imaginary line j connecting the other end side of the lower end portion 12d of the mouth (the lower side in FIG. 3B) and within a range surrounded by the lower end portion 12d of the reading port (the upward-slashed diagonal portion shown in FIG. 3B) A keyboard 20 having key switches such as a power switch 21, numeric / symbol key 22, enter key 23, direction key 24, trigger key 25, function key 26 and the like is located. In addition, each key switch 21, 22, 23, 24, 25, 26 shown in FIG.3 (B) has shown the back surface of the key switch, respectively.

  Thereby, even if the belt 30 is attached to the back surface 10b of the barcode reader 10, the pressing force applied when these key switches are pressed surrounds the keyboard 20 (key switch) regardless of the presence of the belt 30. The light is transmitted to the flat surface G through the reading port housing 12 and the protectors 18 and 19 (support portions). For this reason, even when the key switch is operated, the bar code reader 10 can be reliably supported by these support portions. Therefore, even when the bar code reader 10 is placed on the flat surface G, information by the key switch is used. The input operation can be performed in a stable state.

  As described above, in the barcode reader 10 according to the first embodiment, the maximum outer dimension on the back surface 10b side including the belt 30 is a length exceeding the height dimension β in the thickness γ direction of the belt 30 from the back surface 10b. The key switches 21, 22, 23, 24, 25, and 26 are arranged with the protectors 18 and 19 set to γ and the reading port housing 12 that functions as a support instead of the protectors 18 and 19 in the length direction. The barcode reader 10 is provided on the back surface 10b so as to surround the back surface. As a result, when the barcode reader 10 is placed face up on the flat surface G, the reading port lower end portion 12d, the protector 18, and the length γ exceeding the height dimension β in the thickness direction of the belt 30 are set. 19 supports the barcode reader 10 in contact with the flat surface. Therefore, even if the belt 30 is provided on the back surface 10b, the bar code reader 10 is reliably supported by the reading port housing 12 and the protectors 18 and 19 without being disturbed by the belt 30, and the key switch 21. The operability such as can be improved.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. Whereas the barcode reader 10 according to the first embodiment has the reading port housing 12, the barcode reader 10 'according to the second embodiment has a reading port housing having a "bend shape". The difference is that it is a so-called straight type bar code reader without 12. For this reason, components substantially the same as those of the barcode reader 10 of the first embodiment are denoted by the same reference numerals in FIGS. 4 and 5 and description thereof is omitted.

  As shown in FIGS. 4 and 5 (A), the barcode reader 10 'has a reading port 11a' on one end side 11a of the main body housing 11, and, as shown in FIG. 11e. The protrusions 11d and 11e are formed integrally with the main body housing 11, for example, and protrude in a thickness direction of the belt 30 attached to the back surface 10b with respect to the thickness direction height β of the belt 30. For example, it is configured as γ (corresponding to the reading port lower end 12d shown in FIG. 3A). Thereby, the said protrusion parts 11d and 11e function as a support part.

  As described above, in the barcode reader 10 ′ according to the second embodiment, the maximum outer dimension on the back surface 10b side including the belt 30 exceeds the height dimension β in the thickness γ direction of the belt 30 from the back surface 10b. Projections 11d and 11e and protectors 18 and 19 set to γ are provided at four locations on the back surface 10b of the barcode reader 10 so as to surround the back surface of the key switch 21 and the like in the length direction. As a result, when the barcode reader 10 is placed face up on the flat surface G, the protrusions 11d and 11e, the protector 18, and the length 18 are set to a length γ that exceeds the height dimension β in the thickness direction of the belt 30. 19 supports the barcode reader 10 in contact with the flat surface. Therefore, even if the belt 30 is provided on the back surface 10b, the bar code reader 10 is reliably supported by the protrusions 11d and 11e and the protectors 18 and 19, so that the operability of the key switch 21 and the like can be improved.

  As another embodiment of the present invention, for example, as shown in FIG. 6 (A), belts in the thickness direction of the belt BLT are formed at the four corners of the back surface of a barcode handy terminal BHT (hereinafter referred to as “BHT”) 1. Support portions W1, X1, Y1, and Z1 protruding at the height in the thickness direction of the BLT are provided, and the key switch KEY is surrounded by virtual lines h1, i1, j1, and k1 connecting them. As a result, since the key switch KEY is located within the range surrounded by the support portions W1, X1, Y1, and Z1 (the hatched portion rising to the right shown in FIG. 6A), the BHT 1 can be reliably supported, and the key switch The operability of KEY can be improved. Note that the symbol DSP shown in FIGS. 6A, 6B, and 6C indicates a liquid crystal display.

  Also, for example, as shown in FIG. 6B, support portions W2, X2, and Y2 projecting at the height in the thickness direction of the belt BLT in the thickness direction of the belt BLT, approximately in the middle of each side of the back surface of the BHT 2. , Z2 may be provided, and the key switch KEY may be surrounded by virtual lines h2, i2, j2, and k2 connecting them. As a result, the key switch KEY is positioned within the range surrounded by the support portions W2, X2, Y2, and Z2 (the upwardly hatched portion shown in FIG. 6 (B)), so that the BHT 2 can be reliably supported and the key switch The operability of KEY can be improved.

  The key switch KEY 'partially deviates from the range, but is located in the vicinity of the virtual lines h2 and i2 that define the range, so that the key switch KEY' can be equated with other key switches KEY in the range. In addition, for the switch KEY ′ that deviates from the range as described above, for example, a switch that is used less frequently during the operation of the BHT 2 such as a power switch is arranged, and a frequently used number / symbol key or enter key By arranging within the range, the operability can be improved.

  Further, for example, as shown in FIG. 6 (C), support portions U3, V3, W3, X3, which protrude at the height direction of the belt BLT in the thickness direction of the belt BLT on each side of the back surface of the BHT3. Y3 and Z3 may be provided, and the key switch KEY may be surrounded by virtual lines h3, i3, j3, k3, m3, and n3 connecting them. As a result, the key switch KEY is located within the range surrounded by the support portions U3, V3, W3, X3, Y3, and Z3 (the upwardly hatched portion shown in FIG. 6C), so that the BHT 3 can be reliably supported. The operability of the key switch KEY can be improved. In BHT3 shown in FIG. 6 (C), support portions U3, V3, W3, X3, Y3, and Z3 are provided at six locations around the back surface. However, such support portions are provided at five locations or more than seven locations. Even if provided, the same actions and effects as described above can be obtained.

FIG. 3 is a plan view of the barcode reader according to the first embodiment of the present invention as viewed from the front surface, and shows the positions of the support portion and the belt provided on the back surface in perspective. FIG. 1A is a perspective view illustrating an external configuration of a barcode reader according to a first embodiment of the present invention, and FIG. 1A is viewed from above the front surface, and FIG. FIG. 3 (A) is an explanatory view showing the maximum outer dimensions of the back surface side of the barcode reader according to the first embodiment viewed from the side surface in the width direction, and FIG. 3 (B) is according to the first embodiment. It is explanatory drawing which shows the range enclosed by the reading port lower end part located in the one end side of a barcode reader, and the lower end part of two protectors located in the other end side. It is the top view which looked at the barcode reader which concerns on 2nd Embodiment of this invention from the surface, and represents the position of the support part and belt which are provided in a back surface transparently from the surface. FIG. 5A is a perspective view showing an external configuration of a barcode reader according to a second embodiment of the present invention, and FIG. 5A is viewed from above the front surface, and FIG. 5B is viewed from below the back surface. It is the schematic diagram which looked at the barcode reader which concerns on other embodiment of this invention from the surface, and represents the position of the support part and belt which are provided in a back surface transparently from the surface.

Explanation of symbols

10. Bar code reader (optical information reader)
10a ... surface (surface of the apparatus main body)
10b ... back side (back side of the device body)
11 ... Body housing 11d, 11e ... Projection (support)
12. Reading port housing (reading port forming portion)
12a: Reading port 12d: Lower end of reading port (predetermined part)
18, 19 ... Protector (supporting part)
18a, 19a ... lower end 21 ... power switch (key switch)
22 Number / Symbol key (key switch)
23 ... Enter key (key switch)
24 ... Direction keys (key switches)
25 ... Trigger key (key switch)
26 ... Function keys (key switches)
30, BLT1, BLT2, BLT3 ... Belt BHT1, BHT2, BHT3 ... Barcode handy terminal (optical information reader)
KEY, KEY '... key switches h1, h2, h3, i1, i2, i3, j1, j2, j3, k1, k3, m3, n3 ... virtual lines U3, V3, X1, X2, X3, Y1, Y2, Y3 , Z1, Z2, Z3 ... support part

Claims (3)

A key switch provided on the front surface of the apparatus main body so that optical information to be read and information relating to the operation of the optical information reading apparatus can be input, and the apparatus main body provided along the back surface of the apparatus main body to hold the apparatus main body from the back surface. A belt capable of sandwiching a person's hand between the back surface, and an optical information reader comprising:
A support portion that is set to a length that exceeds the height dimension in the thickness direction of the belt from the back surface with the maximum external dimension on the back surface side of the apparatus main body including the belt, stands in the length direction, and the key 4. An optical information reading device, wherein the optical information reading device is provided at four or more locations on the back surface of the apparatus body so as to surround the back surface of the switch. The optical information reader according to claim 1, wherein a reading port capable of receiving incident light coming from the reading object is formed in a reading port forming portion provided at one end side of the apparatus main body and inclined forward in the back surface direction. There,
When the height in the thickness direction of the belt from the back surface is determined by a predetermined portion of the reading port forming portion with the maximum external dimension on the back surface side of the apparatus main body including the belt,
The optical information reader according to claim 1, wherein the predetermined portion of the reading port forming portion functions as the support portion instead of the support portion to be provided on the one end side.   The optical information reading apparatus according to claim 1, wherein the support portion fixes at least one end side or the other end side of the belt directly or indirectly to the back surface.

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