JP3141910U - Telescopic device for push rod of children's vehicle - Google Patents

Abstract

An object of the present invention is to continuously extend and retract a push bar.
SOLUTION: A plurality of adjustment engagement holes 40 to 43 formed in the upper pipe member 3 along the axial direction, and an engagement formed in the lower pipe member 2 so as to face the adjustment engagement holes 40 and 43. A hole 44, a protrusion 5 elastically engaging / disengaging from the outside of the lower pipe member 2 with respect to both engaging holes, a spring member 6 that gives an elastic force in the engaging direction to the protrusion 5, and the protrusion 5 And an operation member 7 that is disengaged against the elastic force of the elastic member along the axis.
[Selection] Figure 6

Description

  The present invention relates to a telescopic device for a push rod of a child vehicle.

As a conventional technique related to a telescopic device for a push rod of a child vehicle according to the present invention, for example, there is the following Patent Document 1.
Noto 3087745 gazette

  In patent document 1, the structure which enabled length adjustment of the push bar provided in the back of the seat was disclosed. The push bar includes a lower pipe member fixed to the body frame, an upper pipe member inserted into the lower pipe member so as to be extendable from above, and elastically protrudes outward from the inner diameter side of the upper pipe member. And a detent mechanism (an anti-return mechanism) for engaging the protrusion to be engaged with any one of a plurality of engagement holes provided in the axial direction of the lower pipe member. In this detent mechanism, an upper pipe member is expanded and contracted (slid) by pushing a protrusion from one side of a push bar and releasing the engagement with the engagement hole. Further, since the rotation of the upper pipe member with respect to the lower pipe member is restricted, the position of the protrusion with respect to the engagement hole is prevented from shifting in the circumferential direction when the upper pipe member is expanded and contracted.

  By the way, in the push bar having such a configuration, when the upper pipe member expands and contracts, the upper pipe member expands and contracts while the disengaged protrusion contacts the inner surface of the lower pipe member, and the protrusion reaches the engagement hole. At the same time, the expansion and contraction of the upper pipe member is stopped by engaging the protrusion with the engagement hole by the elasticity acting on the protrusion. When the upper pipe member is to be further expanded and contracted, the upper pipe member is expanded and contracted by pushing the projection again to release the engagement. That is, when the upper pipe member is expanded and contracted at two or more distances of the engagement hole, a stepwise operation is required in which the projection is pushed at each position of the engagement hole and the upper pipe member is expanded and contracted. Therefore, it is desired to develop a push bar that can continuously perform this telescopic operation.

  An object of the present invention is to cope with such a problem, and an object thereof is to continuously extend and retract the push bar.

  In order to achieve the above object, a telescopic device for a push bar of a children's vehicle according to the present invention has at least the following configuration.

  That is, the lower pipe member fixed to the rear part of the child vehicle, the upper pipe member inserted into the lower pipe member so as to be slidable up and down, and the lower pipe member and the upper pipe member are engaged with and disengaged from the upper pipe member. In a child vehicle push bar telescopic device provided with a detent mechanism for switching between a sliding state and a sliding stop state, a plurality of detent mechanisms are formed in the upper pipe member along the axial direction. An engagement hole that is opened in the lower pipe member and faces the adjustment engagement hole, a protrusion that elastically engages and disengages from the outside of the lower pipe member with respect to both engagement holes, and the protrusion An elastic member for applying an elastic force in the engaging direction, and an operation member for releasing the engagement of the protrusion along the axis thereof against the elastic force of the elastic member.

  In addition, the engagement / disengagement direction of the protrusion is along the front-rear direction of the child vehicle.

  The operation member integrally supports the protrusion, and a slide support portion that is restricted to move only in the front-rear direction of the child vehicle outside the lower pipe member, and the left-right direction with respect to the slide support portion And two left and right operation parts for moving the slide support part.

  In addition, a cover member is provided outside the lower pipe member so as to cover the operation member, and the cover member is provided with an opening for operation of the operation unit.

  The operation member is provided in a direction in which the operation portion is operated from the front side of the lower pipe member.

  Furthermore, in the present invention, the child vehicle is characterized by having the above-described telescopic device for the push rod of the child vehicle.

  The vehicle for children referred to in the present invention includes a tricycle and a two-wheeled vehicle (bicycle) having a pedal for moving the vehicle by a child, and a four-wheeled vehicle imitating a car or a character.

  BEST MODE FOR CARRYING OUT THE INVENTION A best mode for carrying out a push rod telescopic device for a child vehicle according to the present invention will be described below with reference to the drawings.

  In the present embodiment, the vehicle for children is illustrated as a tricycle A. Further, the traveling direction of the tricycle A is the front-rear direction, the direction orthogonal to the front-rear direction in the horizontal plane is the left-right direction, and the direction orthogonal to the front-rear direction in the vertical plane is the vertical direction.

  The tricycle A of this embodiment is as shown in FIGS. 1 to 4, that is, the support rod E in which the grip portion D is formed at the front end of the frame C provided with the saddle B can be rotated left and right. It is supported by. A front wheel G rotated by a pedal F is supported at the lower end of the support rod E. At the rear end of the frame C, an axle I that supports the left and right rear wheels H rotatably is supported. A footrest J is suspended from the frame C below the saddle B of the frame C. A push bar 1 is erected on the rear side of the saddle B of the frame C. A loading platform 10 is detachably mounted above the axle I.

  The push bar 1 of this embodiment includes a lower pipe member 2 fixed to the frame C of the tricycle A, an upper pipe member 3 that is slidably inserted into the lower pipe member 2, and the lower pipe member 2. A detent mechanism (an anti-return mechanism) 4 is provided that is engaged with and disengaged from the upper pipe member 3 to switch the upper pipe member 2 between a slide state and a slide stop state.

  As shown in FIGS. 5 to 9 and 11, the rotation of the upper pipe member 3 is restricted by the concave and convex engagement with the lower pipe member 2. Specifically, a guide convex portion 21 projecting forward on the inner peripheral surface of the rear portion of the lower pipe member 2 and a slide concave portion 31 concaved forward on the outer peripheral surface of the rear side of the upper pipe member 3 are provided. The rotation is restricted by the concave-convex engagement. The guide convex portion 21 is recessed in a part from the upper end of the lower pipe member 2 along the axis. The slide recess 31 protrudes across the entire area along the axial direction of the upper pipe member. That is, the upper pipe member 3 is controlled to rotate with respect to the lower pipe member 2 and the vertical slide is guided by the slide concave portion 31 engaging the guide convex portion 21.

  The detent mechanism 4 has four adjustment engagement holes 40 to 43 opened along the longitudinal direction in the slide recess 31 of the upper pipe member 3 and one opening in the guide convex portion 21 of the lower pipe member 2. The engagement hole 44 that faces any one of the adjustment engagement holes 40 to 43, and the engagement holes that face each other are elastically engaged and disengaged from the outside of the lower pipe member 2 in the front-rear direction. A projection 5 to be applied, a spring member 6 for applying an elastic force to the protrusion 5 in the engaging direction, and an operation member for releasing the engagement of the protrusion 5 against the elastic force of the spring member 6 along its axis. 7 and a cover member 8 that covers the operation member 7.

  Here, the positional relationship between the adjustment engagement holes 40 to 43 will be described. The adjustment engagement hole 40 is located on the uppermost side of the upper pipe member 3, and the engagement of the lower pipe member 2 in a state where the upper pipe member 3 is most contracted. It faces the hole 44. The adjustment engagement hole 41 is located on the lowermost side of the upper pipe member 3 and faces the engagement hole 44 of the lower pipe member 2 in a state where the upper pipe member is most extended. The adjustment engagement hole 42 is located above the adjustment engagement hole 41 and the adjustment engagement hole 43 is located above the adjustment engagement hole 42 with a predetermined interval therebetween. The engagement hole 42 and the adjustment engagement hole 43 are made to face the engagement hole 44. When any of the adjustment engagement holes 40 to 43 faces the engagement hole 44, the protrusion 5 is elastically engaged with the adjustment adjustment hole and the engagement hole facing each other, so that the upper pipe member 3 is The slide is stopped with respect to the lower pipe member 2.

  The protrusion 5 has a bullet shape in which an end portion (hereinafter referred to as “front end portion”) 51 that engages with the engagement hole 44 is formed in a spherical shape, and the other end portion (hereinafter referred to as “rear end portion”). 52 is fixed to the operation member 7. The spring member 6 is a compression spring, and is positioned in front of the protrusion 5 and the lower pipe member 2, and the protrusion 5 extends into the engagement hole across the operation member 7 and the lower pipe member 2. It is mounted so that a resilient force acts in a direction to engage with 44. The operation member 7 is fitted to the lower pipe member 2 so as to be slidable in the front-rear direction, and is always positioned on the front side due to the elastic force of the spring member 6, thereby engaging with the engagement hole 44 of the protrusion 5. The projection 5 is removed from the engagement hole 44 (disengaged) by maintaining the combined state and sliding backward against the elastic force of the spring member 6. The cover member 8 is formed so as to cover from the upper end of the lower pipe member 2 to a portion where the entire guide convex portion 21 is hidden, and includes a guide support portion 81 that supports the operation member 7 so as to be slidable inside, and the operation member 7. Two left and right openings 82 and 83 for operating from the outside of the cover member 8 are provided.

  Hereinafter, a specific configuration of the operation member 7 will be described. The operation member 7 is slidably fitted to the lower pipe member 2, and a slide support portion in which a long oval fitting hole 70 is formed in the front-rear direction. 71 and two left and right operation portions 72 and 73 that protrude in the left-right direction with respect to the slide support portion 71 and push the slide support portion 71 backward. The fitting hole 70 has a length in the longitudinal direction such that the protrusion 5 can be removed from the engagement hole 44 when the operation member 7 slides backward, and a diameter in the short direction is the same as the diameter of the lower pipe member 2. The diameter is suitable.

  On the rear side of the slide support portion 71, the protrusion 5 is fixed so that the tip end portion 51 protrudes into the fitting hole 70, and on the front side, a recess 74 for mounting the spring member 6 is formed. The recess 74 is opened at the rear, and the spring member 6 protrudes into the fitting hole 70 from the opening so as to come into contact with the lower pipe member 2.

  The operation portions 72 and 73 protrude from the slide support portion 71 in the left-right radial direction, and have push surface portions 72A and 73A formed in a curved shape in the front, and the push surface portions 72A and 73A are along the vertical direction. Three ridges 72B and 73B are formed in the left-right direction. The ridges 72B and 73B have an anti-slip effect on the fingers when the push operation is performed. Further, the pushing surface portions 72A and 73A are exposed from the openings 82 and 83, and can be pushed from the outside of the cover member 8.

  Next, the support form of the operation member 7 of the guide support portion 81 in the cover member 8 will be described. The guide support portion 81 is formed above and below the inside of the cover member 8 so as to sandwich the operation member 7 from above and below. The upper support portion 81A and the lower support portion 81B, and the operation portion guide surface portion 81C that is formed on the inner peripheral surface of the cover member 8 and supports the side portions 72C and 73C of the operation portions 72 and 73 close to each other from the side. , 81D and slide support portion guide surfaces 81E, 81F for supporting the left and right side surface portions 71A, 71B on the front side of the slide support portion 71 close to each other from the side. The openings 82 and 83 are opened to the front left and right with the axis of the cover member 8 as a boundary. Reference numerals 82A and 83A denote slide guide openings formed so as to be continuous with the openings 82 and 83 along the slide support portion guide surfaces 81E and 81F. As shown in FIG. 11, the cover member 8 includes two members, that is, a left member 8 </ b> A and a right member 8 </ b> B, and is configured such that both members are combined with the lower pipe member 2 from the left and right.

  That is, the guide support part 81 prevents the upper support part 81A and the lower support part 81B from supporting the operation member 7 from above and below, thereby preventing the operation member 7 from moving up and down with respect to the lower pipe member 2, and the operation part guide surface part. 81C and 81D and slide support part guide surfaces 81E and 81F support the operation part 7 from the left and right to prevent the operation member 7 from rotating relative to the lower pipe member 2. Therefore, regardless of which of the operation units 72 and 73 is pressed, the guide support unit 81 can be slid straight back, and if the finger performing the pressing operation is separated from the operation units 72 and 73, the spring The member 6 can be slid forward by the elastic force of the member 6.

  According to the push bar 1 of the present embodiment, the protrusion 5 is always kept in the disengaged state during the pushing operation of the operation member 7, so that the slide of the upper pipe member 3 extends from the upper limit of expansion / contraction to the lower limit of expansion / contraction. Can be performed continuously. That is, when the upper pipe member 3 is slid to the target position, the upper pipe member 3 can be slid without performing stepwise engagement / disengagement of the protrusions as in the prior art. In addition, the protrusion 5 can be engaged by pushing any of the two left and right operation portions 72 and 73, so that the user can push the finger with either the right hand side or the left hand side. Moreover, since the operation parts 72 and 73 are located in the front, the disengagement operation of the protrusion 5 can be performed from the rear side of the push bar 1, for example, the tricycle A can be operated by operating the push bar 1. If it is desired to change the length of the push bar 1 during the pushing operation, the tricycle A can be stopped and the operation portions 72 and 73 can be pushed in the same state.

  The number of adjustment engagement holes in the present invention is not limited to four illustrated in the present embodiment, and may be less than four or five or more. At least the upper slide position and the lower slide limit of the upper pipe member It only needs to be in position (not shown). In addition, the operation direction and the number of operation units in the present invention are not limited to the two left and right illustrated in the present embodiment, and the operation direction may be a push operation from the rear, or the number may be one ( Not shown). When the number of operation portions is one, the front or rear of the lower pipe member is preferable (not shown).

  Hereinafter, the mounting structure of the loading platform 10 will be described with reference to FIGS. 12 to 14. The loading platform 10 is formed in a bucket shape having a handle 11, and the loading platform 10 is attached to the frame C of the tricycle A. It is detachably attached via the connecting member 9. The handle 11 is supported so as to be tiltable with respect to the loading platform 10. In the attached state, the handle 11 is tilted along the periphery of the opening 12 of the loading platform 10, and can be stood when it is removed and carried.

  The connecting member 9 is provided in a penetrating manner in a through hole 9A opened in a support plate 90 provided in a erected manner between two left and right frames C that support the axle I, and in a front wall surface 10A of the loading platform 10. The connecting rod 9B is connected to the tricycle A so as to be freely inserted into and removed from the through hole 9A.

  The through-hole 9A is formed as a rectangle whose longitudinal direction is the left-right direction. The connecting rod 9B is supported so as to rotate about an axis, and an operating body 92 for rotating the connecting rod 9B is provided at an end portion (hereinafter referred to as “rear end portion”) 91 protruding into the loading platform 10. It is fixed. Further, an end portion (hereinafter referred to as “tip portion”) 93 on the side of the through hole 9A passes through the through hole 9A and is hooked around the through hole 9A of the support plate 90 by the rotation of the connecting rod 9A. A retaining body 94 is fixed.

  The operating body 92 is formed of a circular plate 92A fixed to the connecting rod 9B, and a rotary knob 92B protruding from the center line of the rotary plate 92A. The connecting rod 9B is rotated by pinching 92B with a finger and rotating the rotating plate 92A.

  The retaining body 94 is formed in a plate shape having a similar shape that is slightly smaller than the through hole 9A. That is, when the connecting rod 9B is penetrated (inserted and removed) into the through hole 9A, the longitudinal direction of the latching body 94 is set along the longitudinal side of the through hole (see FIG. 14B). In order to put the latching body 94 into the latching state (preventing the retaining state), the operating body 92 is rotated so that the longitudinal direction of the latching body 94 intersects the longitudinal direction of the through-hole 9A (see FIG. 14A). , 90 degrees in the figure).

  On the front side of the support plate 90, an accommodation recess 95 that communicates with the through hole 9 </ b> A and accommodates the penetrating latch 94 is provided. The housing recess 95 has a depth that prevents the penetrating hook 94 from projecting. The housing recess 95 is closed by a lid 96, and the lid 96 prevents an influence on the operation of the connecting member 9 due to gravel entering the housing recess 95.

  The front wall surface 10A is provided with a resistance protrusion 97 that comes into contact with the back surface of the rotating plate 92A and gives resistance to the rotation when the engaging portion 94 is in an engaged state. That is, the resistance projection 97 provides resistance to the rotation of the rotation plate 92A, thereby preventing the suspension body 94 from rotating due to vibration or the like when the tricycle A is moving, and when the tricycle A is moving. It prevents that the loading platform 10 comes off suddenly.

  According to the mounting structure of the loading platform 10 of the present embodiment, the loading platform 10 can be detached from the tricycle A by the operation of rotating the rotation knob 92A, and after passing through the retaining body 94 with respect to the through hole 9A, The loading platform 10 can be connected to the tricycle A by an operation of rotating the moving knob 92A. In other words, since the loading platform 10 can be attached and detached by a simple operation of turning the turning knob 92A, even a child who rides on the tricycle A can easily attach and remove the loading platform 10. Further, by removing the loading platform 10, play with the loading platform 10 can be performed. Furthermore, the loading platform 10 can be easily carried by the handle provided on the loading platform 10. Moreover, it can also be easily replaced with another loading platform having a connecting rod.

  The connecting rod in the present invention is not limited to the form provided on the cargo bed side exemplified in this embodiment, and may be provided on the frame side. In this case, the rotation knob is on the frame side, and the through hole is provided. A hole is opened in the loading platform (not shown). In addition, the shape of the through hole and the latching body in the present invention is not limited to the rectangle illustrated in the present embodiment, and for example, the rotation of the latching body such as an ellipse, an oval, or a triangle is possible. Therefore, the shape of the latching body is not limited as long as the latching body is latched around the through hole. Further, the shape of the latching body in the present invention is not limited to the shape similar to the through hole as exemplified in the present embodiment, and the latching body can be penetrated through the through hole and the latch body can be rotated. Any shape may be used as long as the latching body is latched around the through hole by movement (not shown).

  The present invention is not limited to the illustrated embodiment, and can be implemented in other configurations without departing from the contents described in the claims of the utility model registration.

The front side perspective view of the tricycle which implemented the mounting structure of the loading platform which concerns on this invention. FIG. The front side perspective view of the state which removed the loading platform. FIG. FIG. 2 is an enlarged vertical cross-sectional view of a detent mechanism portion in FIG. 1, showing a state in which the protrusions are disengaged. FIG. 4 is an enlarged longitudinal sectional view of a detent mechanism portion in FIG. 3, showing a state in which the protrusions are disengaged. FIG. 7 is a sectional view taken along line (7)-(7) in FIG. 6. FIG. 6 shows the engagement state of the protrusions. FIG. 7 shows the engagement state of the protrusions. (10)-(10) sectional view taken on the line of FIG. The disassembled perspective view of a detent mechanism part. FIG. 3 is an enlarged longitudinal sectional view of a cargo bed portion in FIG. 2. FIG. 5 is an enlarged vertical cross-sectional view of a cargo bed portion in FIG. 4. FIG. 12 is a cross-sectional view taken along the line (14)-(14) of FIG. 12, in which (a) shows a hooked state of the hooked portion, and (b) shows an insertable state and a pullable state of the hooked portion.

Explanation of symbols

A: Tricycle C: Frame 1: Pusher bar 2: Lower pipe member 3: Upper pipe member 4: Detent mechanism 40: Adjustment engagement hole 41: Adjustment engagement hole 42: Adjustment engagement hole 43: Adjustment engagement hole 44 : Engagement hole 5: Projection 6: Spring member 7: Operation member 71: Slide support part 72: Operation part 73: Operation part 8: Cover member 82: Opening part 83: Opening part

Claims (6)

A lower pipe member fixed to the rear part of the child vehicle, an upper pipe member inserted into the lower pipe member so as to be slidable up and down, and the lower pipe member and the upper pipe member are engaged with and disengaged from each other. In a telescopic device for a push rod of a children's vehicle provided with a detent mechanism for switching between a state and a slide stop state,
The detent mechanism includes a plurality of adjustment engagement holes that are opened in the axial direction in the upper pipe member;
An engagement hole opened in the lower pipe member and facing the adjustment engagement hole;
A protrusion that elastically engages and disengages from the outside of the lower pipe member with respect to both the engagement holes;
A spring member for applying an elastic force in the engaging direction to the protrusion;
An operation member for releasing a push bar of a children's vehicle, comprising: an operation member that disengages the protrusion along an axis thereof against an elastic force of the elastic member.   The telescopic device for a push rod of a children's vehicle according to claim 1, wherein the engagement / disengagement direction of the protrusion is along the front / rear direction of the child's vehicle.   The operation member integrally supports the protrusion, and a slide support portion that is restricted to move only in the front-rear direction of the child vehicle on the outside of the lower pipe member, and to the left and right with respect to the slide support portion 3. The telescopic device for a push rod of a children's vehicle according to claim 1, further comprising two left and right operation portions that project in a direction and operate to move the slide support portion.   The cover member provided so that the said operation member might be covered on the outer side of the said lower pipe member, This cover member is provided with the opening part for operation of the said operation part. A telescopic device for a push bar of a child vehicle as described.   5. The telescopic device for a push rod of a children's vehicle according to claim 3, wherein the operation member is provided in a direction in which the operation portion is operated from the front side of the lower pipe member.   A child vehicle comprising the push rod extension device for a child vehicle according to any one of claims 1 to 5.

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