JP5313121B2 - Strap attachment structure - Google Patents

Description

  The present invention relates to a strap attachment structure, and more particularly to a strap attachment structure that is detachably attached to a handheld terminal such as a portable information terminal having a size that can be carried.

  In the physical distribution, distribution / retail industries, etc., a handheld terminal is brought to the site to collect data and print the collected data. The handheld terminal is generally provided with a hand strap for holding the hand so that the handheld terminal does not fall away from the hand holding the handheld terminal.

  6 is a perspective view showing the back side of a handheld terminal having a conventional strap attachment structure, and FIG. 7 is a perspective view showing the back side of a handheld terminal having another conventional strap attachment structure.

  The handheld terminal 100 shown in FIG. 6 has the same structure as that described in Patent Document 1, for example, and a hand strap 101 is detachably attached to the back surface. The hand strap 101 includes a band portion 102 such as an elongated rubber band, and mounting brackets 103 attached to both ends thereof. The mounting bracket 103 is attached to the band unit 102 by sandwiching both ends of the band unit 102 by bruising. The mounting fitting 103 is also integrally formed with a locking projection that protrudes in the width direction with respect to the width of the band portion 102, and a wire-like shaft 104 made of a spring material is attached thereto. Both ends of the shaft 104 are held by bent portions of the mounting bracket 103, and are configured to be rotatable around the bent portion.

  The handheld terminal 100 has locking portions 105 and 106 for attaching the hand strap 101 to the back surface thereof. The locking portions 105 and 106 have loose fitting portions 107 that are recessed so that the mounting bracket 103 of the hand strap 101 fits. The loose fitting portion 107 is expanded so that the portion of the mounting bracket 103 excluding the locking projection can slide in the mutual direction in a state where the mounting bracket 103 is loosely fitted. The locking portions 105 and 106 are formed with slits along the movement trajectory of the locking projection when the mounting bracket 103 slides, and the mounting bracket 103 loosely fitted to the loose mounting portion 107 is moved in the mutual direction. When slid toward the front, the locking projection of the mounting bracket 103 is fitted into the slit.

  Therefore, when attaching the hand strap 101 to the handheld terminal 100, first, the attachment fitting 103 of the hand strap 101 is fitted into the loose fitting portion 107 of the locking portion 105, for example. Next, the mounting bracket 103 is slid in the direction of the locking portion 106, and the locking protrusion of the mounting bracket 103 is fitted into the slit of the locking portion 105. Then, the shaft 104 attached to the attachment metal fitting 103 is rotated so as to be tilted, and the attachment metal fitting 103 is slid to push the shaft 104 into the open space. As a result, the shaft 104 is pressed against the wall of the loose fitting portion 107 opposite to the side where the slit is formed, so that the mounting bracket 103 cannot be moved in the sliding direction. The attachment fitting 103 on the opposite side of the hand strap 101 is also attached to the locking portion 106 by the same operation.

  When removing the hand strap 101 from the handheld terminal 100, first, the hand strap 101 is rotated to cause the shaft 104, and the attachment fitting 103 is slid to disengage the locking projection from the slit of the locking portion 105. Thereby, the attachment fitting 103 can be removed from the loose fitting portion 107 of the locking portion 105. Similarly, the attachment fitting 103 on the opposite side of the hand strap 101 can be removed from the loose fitting portion 107 of the locking portion 106 in the same manner.

  In the handheld terminal 110 shown in FIG. 7, a hand strap 111 is detachably attached to the back surface thereof. The hand strap 111 has a band portion 112 such as an elongated rubber band, and one end thereof is fixed to the handheld terminal 110 by a mounting bracket 113. That is, the mounting bracket 113 includes an annular member 114 having a shape obtained by bending a metal round bar into a rectangle, a connecting member 115 wound around one of the long sides of the annular member 114, and the connecting member 115 as a handheld terminal. And a fixing screw 116 to be screwed to 110. The band portion 112 is attached to the attachment fitting 113 by being bent through the annular member 114 of the attachment fitting 113 and being stopped at the overlapping portion by a hook-and-loop fastener sewn on the overlapped portion.

International Publication Number WO2000 / 042877

  However, in the strap mounting structure in which the locking projection of the mounting bracket is fitted into the locking portion so that the locking projection fitted with the shaft made of the spring material does not come out of the locking portion, two actions are required for strap attachment. For this reason, there is a problem in that the operation for preventing disengagement by the second action shaft is forgotten.

  In addition, the strap mounting structure in which the mounting bracket is fastened with its fixing screw requires a hook-and-loop fastener that can be sewn to the band portion, and the number of parts constituting the mounting bracket is large, which increases costs. There was a problem.

  The present invention has been made in view of these points, and an object thereof is to provide a low-cost strap attachment structure that can be attached in one action.

  In the present invention, in order to solve the above-described problem, in the strap attachment structure in which the hand strap is detachably attached to the handheld terminal, the hand strap includes a band-shaped band portion and a pair of protrusions protruding in the width direction of the band portion. And mounting brackets attached to both ends of the band portion by the central portion of the main body integrally formed with the locking projection, the handheld terminal has a locking portion for locking the mounting bracket, The locking portion covers a loose fitting portion recessed in a shape that allows the mounting bracket to be fitted and slid on the surface of the handheld terminal, and a position where the locking projection portion is slid. A slit forming member that is disposed to form a slit and has a separation preventing portion on the entrance side of the slit, and the hand strap. Alternatively, a strap attachment structure provided with a biasing means provided on the locking portion and biasing the locking projection in the slit to a position locked with the separation preventing portion. Provided.

  According to such a strap mounting structure, the user pushes the mounting bracket with his / her finger into the loose fitting portion, slides in the pressed state, and releases the finger from the mounting bracket in one action. Can be attached. When the finger is released from the mounting bracket, the urging means moves the locking projection in the slit to a position locked with the separation preventing portion, so that the mounting bracket does not come off the locking portion.

  The strap attachment structure of the above configuration is easy to attach and detach the strap because no special operation is required to prevent the attachment bracket from coming off the engagement portion when attaching the attachment bracket to the engagement portion. There is an advantage that there is no risk of dropout due to forgetting the detachment prevention operation.

  In addition, the number of parts required for attachment is small, and in particular, since the elements of the locking portion including the biasing means can be formed integrally with the housing of the handheld terminal, the manufacturing cost can be reduced. .

It is a figure which shows the external appearance of the handheld terminal which concerns on 1st Embodiment, (A) is the perspective view which looked at the handheld terminal from the front side, (B) is the perspective view which looked at the handheld terminal from the back side. . It is explanatory drawing which shows the state before attaching a strap. It is a figure which shows the state of the completion of attachment of a strap. FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 3 for explaining the operation when attaching the strap, where (A) shows the first attachment operation state, (B) shows the second attachment operation state, C) shows a third mounting operation state. It is a figure which shows the strap attachment structure which concerns on 2nd Embodiment, Comprising: (A) is a bottom view of an attachment metal fitting, (B) is a front view of an attachment fitting. It is a perspective view which shows the back side of the handheld terminal which has the conventional strap attachment structure. It is a perspective view which shows the back side of the handheld terminal which has another conventional strap attachment structure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1A and 1B are external views of the handheld terminal according to the first embodiment, wherein FIG. 1A is a perspective view of the handheld terminal viewed from the front side, and FIG. 1B is a perspective view of the handheld terminal viewed from the back side. FIG. 2, FIG. 2 is an explanatory view showing a state before attaching the strap, FIG. 3 is a view showing a state where the attachment of the strap is completed, and FIG. 4 is a cross-sectional view taken along the line AA in FIG. FIG. 5A shows a first attachment operation state, FIG. 5B shows a second attachment operation state, and FIG. 5C shows a third attachment operation state.

  As shown in FIG. 1A, the handheld terminal 10 has a display unit 11 and an operation unit 12 such as a numeric keypad and a function key on the front side, and as shown in FIG. A hand strap 13 is detachably attached to the side.

  The hand strap 13 includes a band-like band portion 14 that can be expanded and contracted, and mounting brackets 15 that are attached to both ends thereof. The mounting brackets 15 attached to both ends of the band portion 14 have the same structure, and as shown in FIG. 2, a plurality of claws formed integrally by sandwiching one end of the band portion 14 by bruising. The part 16 is attached to the band part 14 by causing the band part 14 to bite. The mounting bracket 15 is also integrally formed with a pair of locking projections 17 protruding in the width direction with respect to the width of the band portion 14.

  The handheld terminal 10 has locking portions 18 and 19 for attaching the hand strap 13 to the back side thereof. The latching | locking parts 18 and 19 have the loose fitting part 20 dented in T shape so that the attachment bracket 15 of the hand strap 13 may fit.

  The loose fitting portion 20 is expanded to a shape in which the central portion of the main body excluding the locking projection 17 of the fitting 15 can be slid in a state where the fitting 15 is loosely fitted. The movement position of the locking projection 17 when the mounting bracket 15 slides is covered with the slit forming member 21 to form the slit 22. As shown in the sectional view of FIG. 4, the slit forming member 21 has a hook-like shape at the entrance portion into which the locking projection 17 enters, and the locking projection 17 extends from the slit 22. A detachment prevention unit 23 that prevents detachment is configured. The internal slit 22 has a height approximately twice the thickness of the locking projection 17, and the portion of the entrance where the locking projection 17 slides and enters the slit 22 is the locking projection 17. The height is almost equal to the thickness of the.

  The loose fitting portion 20 is also formed with a biasing member 24 as a biasing means at a location where the central portion of the main body is located when the fitting 15 is loosely fitted. The biasing member 24 is formed by a cantilever plate having one end as a free end and the other end as a fixed end by forming a U-shaped slit along the contour. A contact portion 25 protruding from the bottom surface of the loose fitting portion 20 is formed in the portion. When the mounting member 15 is loosely fitted to the loose fitting portion 20, the biasing member 24 is pushed down to the bottom surface of the loose fitting portion 20 by the central portion of the body of the fitting 15, and the locking projection 17. Is located within the slit 22, it functions to push up the locking projection 17 from the bottom surface of the loose fitting portion 20.

  The loose fitting portion 20, the slit forming member 21, and the biasing member 24 are integrally formed with the housing of the handheld terminal 10 by an elastic material. This housing can be made to have a spring property by biasing member 24 by forming it with, for example, ABS (acrylonitrile butadiene styrene) resin.

  Next, the operation of attaching the hand strap 13 to the handheld terminal 10 in the handheld terminal 10 and the hand strap 13 having the above configuration will be described.

  First, one mounting bracket 15 of the hand strap 13 is fitted into the loose fitting portion 20 of the one locking portion 18. At this time, by placing the central part of the main body of the mounting bracket 15 between the slit forming member 21, the locking projection 17 is placed along the upper end surface of the slit forming member 21 in FIG. It can be easily fitted into the loose fitting part 20. At this time, as shown in FIG. 4A, the urging member 24 is in a state where the abutment portion 25 is bent in conjunction with the depression by the central portion of the main body of the mounting bracket 15, and its elastic energy. Is stored.

  Next, the mounting bracket 15 is slid in the direction of the other locking portion 19 while being pressed down, and the locking projection 17 of the mounting bracket 15 is slit 22 as shown in FIG. Fit into.

  When the pressing force to the mounting bracket 15 is released, the elastic energy stored in the urging member 24 is also released, so that the mounting bracket 15 is pushed up by the restoring force of the urging member 24. As a result, as shown in FIG. 4C, the locking projection 17 of the mounting bracket 15 is restrained by the separation preventing portion 23, and the hand strap 13 does not come off from the locking portion 18. Installed in a state.

  The mounting bracket 15 on the opposite side of the hand strap 13 is also attached to the locking portion 19 by performing the same operation. In a state where both the mounting brackets 15 of the hand strap 13 are mounted on the locking portions 18 and 19, the locking projection 17 of the mounting bracket 15 is maintained at the position of the slit 22 due to the stretchability of the band portion 14. Become. In addition, since the urging member 24 moves the locking projection 17 to a position where the locking projection 17 is locked with the detachment prevention portion 23, the possibility that the locking projection 17 is detached is greatly reduced.

  In this way, the user pushes the mounting strap 15 with the finger into the loose-fitting portion 20, slides it in the pressed state, and then releases the finger from the mounting bracket 15 with one action by a series of actions. Can be attached. Since only one action is required, the attachment procedure can be securely attached without partially forgetting the procedure of the attachment operation.

  Conversely, when removing the hand strap 13 from the handheld terminal 10, first, the central portion of the body of the mounting bracket 15 is pushed down. As a result, the locking projection 17 of the mounting bracket 15 is released from the restraint by the detachment preventing portion 23, and shifts from the state (C) of FIG. 4 to the state (B). Next, the locking projection 17 is detached from the slit 22 of the locking portion 18 by sliding the mounting bracket 15 in the direction opposite to that when the mounting bracket 15 is mounted while the central portion of the body of the mounting bracket 15 is pushed down. As a result, the mounting bracket 15 can be easily detached from the loose fitting portion 20 of the locking portion 18. The mounting bracket 15 on the opposite side of the hand strap 13 can also be removed from the locking portion 19 by the same operation. Thus, even when the hand strap 13 is removed, it can be removed with one action, so that the troublesomeness of the removal work can be greatly reduced.

5A and 5B are diagrams showing a strap attachment structure according to the second embodiment, in which FIG. 5A is a bottom view of the attachment fitting, and FIG. 5B is a front view of the attachment fitting.
In the strap attachment structure according to the second embodiment, the function of the urging member 24 of the strap attachment structure according to the first embodiment is provided on the attachment bracket 15 side. That is, as shown in FIG. 5A, the mounting bracket 15 is formed with a slit along the contour so as to form, for example, a T-shaped biasing member 24 in the central part 26 of the mounting bracket 15. ing. As shown in FIG. 5B, the urging member 24 is formed such that its free end is bent so as to protrude downward in the drawing. Therefore, the mounting bracket 15 is formed of an elastic spring material.

  When the mounting bracket 15 is pushed down, the urging member 24 is elastically deformed until it reaches the same position as the central portion 26 of the main body, and the locking projection 17 moves to the slit 22 of the locking portions 18 and 19 to be mounted. When the pressing force of the metal fitting 15 is lost, the mounting metal fitting 15 is lifted by the restoring force of the urging member 24. As a result, the mounting bracket 15 moves to a position where the locking projection 17 is caught by the separation preventing portion 23, so that it does not naturally separate from the slit 22 of the locking portions 18 and 19.

  In this embodiment, the main body central portion 26 of the mounting bracket 15 and the locking projection 17 are integrally formed. However, they are formed separately, and the spring material is attached to the main body central portion 26 of the mounting bracket 15. You may comprise so that the latching protrusion part 17 formed by (1) may be attached. The mounting bracket 15 is also made of metal, but may be made of resin.

DESCRIPTION OF SYMBOLS 10 Handheld terminal 11 Display part 12 Operation part 13 Hand strap 14 Band part 15 Mounting bracket 16 Claw part 17 Locking projection part 18, 19 Locking part 20 Free fitting part 21 Slit formation member 22 Slit 23 Detachment prevention part 24 Energizing member 25 Abutting part 26 Central part of main body

Claims (6)

In the strap attachment structure where the hand strap is detachably attached to the handheld terminal,
The hand strap includes a band-shaped band part and mounting brackets attached to both ends of the band part by a central part of the main body integrally formed with a pair of locking projections protruding in the width direction of the band part, Have
The handheld terminal has a locking portion for locking the mounting bracket,
The locking portion covers a loose fitting portion recessed in a shape that allows the mounting bracket to be fitted and slid on the surface of the handheld terminal, and a position where the locking projection portion is slid. A slit formed to form a slit, and a slit forming member having a separation preventing portion on the entrance side of the slit;
A strap provided on the hand strap or the locking portion and provided with a biasing means for biasing the locking projection in the slit to a position locked with the separation preventing portion. Mounting structure.   The strap mounting structure according to claim 1, wherein the biasing means is a spring that is biased in conjunction with an operation of pushing the mounting bracket into the loose fitting portion.   The biasing means is formed such that a slit is partially formed along the contour of the bottom surface of the loosely fitting portion, and a tip end on a free end side protrudes from the bottom surface of the loosely fitting portion. The strap attachment structure according to claim 1.   The biasing means is formed with a contact portion that protrudes from a bottom surface of the loose fitting portion and abuts against a central portion of the body of the mounting bracket at the distal end portion on the free end side. Item 4. A strap attachment structure according to Item 3.   The strap attachment structure according to claim 1, wherein the loose fitting portion, the slit forming member, and the biasing means are formed integrally with the housing of the handheld terminal by an elastic material.   The entrance of the slit has a height substantially equal to the thickness of the locking projection by the separation preventing portion, and the back side of the separation preventing portion has a height approximately twice the thickness of the locking projection. The strap attachment structure according to claim 1, wherein the strap attachment structure is provided.

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