Abstract:
A continuously adjustable water flow control apparatus includes at least a control seat, a adjustment head, a push sleeve and an adjustment cap. A relative position between the adjusting plate and the push sleeve can be changed by adjusting the adjustment cap to press against the adjusting plate of the adjustment head. Accordingly, a stepless change of the sectional figure and area of the water channel is attainable. In addition, the use of the continuously adjustable water flow control apparatus in combination with different kinds of shower heads and rotational devices will meet different needs of the users.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a continuously adjustable water flow control apparatus, and more particularly, to a device in which a relative position between an adjusting plate and a push sleeve can be changed by adjusting an adjustment cap to press against the adjusting plate of the adjustment head. Accordingly, a stepless change of the sectional figure and area of the water channel is attainable. In addition, the use of the continuously adjustable water flow control apparatus in combination with different kinds of shower heads and rotational devices will meet different needs of the users. 
     2. Description of the Prior Art 
     The conventional water flow control device is fitted with a water valve at the flow channel inside of the outlet to control the water flow. However, the design of this conventional device is aimed at the controlling methods (direct press control or indirect control) of all kinds of switches, outflow retaining function and outflow mode change (concentrated, dispersed spray etc.) in order to promote the using convenience. 
     However, the requirements of all kinds of instruments and daily necessities become more and more strict. Not only should it have basic functions with quality requirements, but also have various additional functions in order to broaden the application fields and to facilitate the application. Similarly, the structure of the outflow head (shower head) also applies thereto. Thus, how to make the shower head with more outflow modes in order to meet different requirements of promoting the using functions and broadening the application fields is a bottleneck for the related industry to make breakthrough. 
     SUMMARY OF THE INVENTION 
     It is a primary object of the present invention to provide a continuously adjustable water flow control apparatus, wherein a relative position between the adjusting plate and the push sleeve can be changed by adjusting the adjustment cap to press against the adjusting plate of the adjustment head. Accordingly, a stepless change of the sectional figure and area of the water channel is attainable. 
     It is a further object of the present invention to provide a continuously adjustable water flow control apparatus, wherein the use of the continuously adjustable water flow control apparatus in combination with different kinds of shower heads and rotational devices will meet different needs of the users. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The drawings disclose illustrative embodiments of the present invention which serve to exemplify the various advantages and objects hereof, and are as follows: 
     FIG. 1 is a perspective exploded view of the main control device of the present invention; 
     FIG. 2 is a perspective exploded view of a first preferred embodiment of the present invention; 
     FIG. 2A is a first sectional view of the first preferred embodiment of the present invention showing the using state thereof; 
     FIG. 2B is a second sectional view of the first preferred embodiment of the present invention showing the using state thereof; 
     FIG. 3 is a perspective exploded view of a second preferred embodiment of the present invention; 
     FIG. 3A is a sectional view of the second preferred embodiment of the present invention showing the using state thereof; 
     FIG. 4 is a perspective exploded view of a third preferred embodiment of the present invention; 
     FIG. 4A is a first sectional view of the third preferred embodiment of the present invention showing the using state thereof; 
     FIG. 4B is a second sectional view of the third preferred embodiment of the present invention showing the using state thereof; 
     FIG. 4C is a third sectional view of the third preferred embodiment of the present invention showing the using state thereof; 
     FIG. 5 is a perspective exploded view of a fourth preferred embodiment of the present invention; and 
     FIG. 5A is a sectional view of the fourth preferred embodiment of the present invention showing the using state thereof. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     FIG. 1 shows a perspective exploded view of the main control device of the present invention. It is apparent from FIG. 1 that the continuously adjustable water flow control apparatus at least includes a control seat  1 , an adjustment head  2 , a push sleeve  3  and an adjustment cap  4 . The control seat  1  is fitted with a male thread  14  at one end thereof, a step rim  12  at the center thereof and a partition inside thereof. The center of the partition contains a through hole  11  at the rim of which a plurality of channels  13  are disposed. The adjustment head  2  is cylinder-shaped, and the side wall of the opening end thereof is composed of adjusting plates  21  arranged in a ring-shaped manner and evenly spaced. The bottom thereof includes a through hole and channels  22  corresponding to that of the control seat  1 . The push sleeve  3  is provided with a resilient ring  31  at a proper position of the side wall thereof. The adjustment cap  4  is fitted with a slope  42  at the inner rim thereof and a female thread  41  at one end thereof. In assembly, the adjustment head  2  is inserted into one end of the control seat  1  such that the channels  13 ,  22  are aligned opposite one another. Thereafter, the push sleeve  3  is installed in the adjusting plates  21  of the adjustment head  2  while the adjustment cap  4  and the control seat  1  are screwed together by means of the female thread  41  and the male thread  14 . In turning the adjustment cap  4 , the adjustment cap  4  is rotatively movable backwards and forwards at the outer rim of the control seat  1  while the slopes  42  at the inner rim thereof is pushed against the outer rim of the adjusting plates  21 . As a result, a stepless change is created at the clearance of adjusting plates  21  and at the corresponding position of the push sleeve  3 . 
     FIG. 2 shows a perspective exploded view of a first preferred embodiment of the present invention. It&#39;s apparent from FIG. 2 together with FIGS. 2A and 2B that the above-mentioned control device together with an inner sleeve  6  is inserted into a shower head  7  and fixed by a screw  74  on a fixing shaft hole  72 . And a blocking ring  5  is mounted at a proper position of the outer rim of the adjustment cap  4  while a key  51  is locked into a groove  61  of the inner sleeve  6 . Accordingly, the water flows from the opening  71  through the channels  13 ,  22  to the clearance between the adjusting plates  21  and the push sleeve  3  for spraying outward. In turning the adjustment cap  4 , a stepless change is created at the clearance of adjusting plates  21  and at the corresponding position of the push sleeve  3  so that a stepless control change will also apply to the sprayed water. 
     FIG. 3 shows a perspective exploded view of a second preferred embodiment of the present invention. It&#39;s apparent from FIG. 3 together with FIG. 3A that a rotational device secured with the control device consists of a housing  8 , a rotational shaft  81 , a joint seat  82 , a push ring  83  and a fixing seat  84 . The rotational shaft  81  is inserted into one end of the housing  8  such that a ball seat  811  is locked at the inner rim of the housing  8 . Thereafter, the joint seat  82  and the push ring  83  are also installed while the fixing seat  84  is screwed at the other end of the housing  8  for creating a multi-directional base. A sealing ring  73  and the inner sleeve  6  are mounted at the opening of the base. Thereafter, the control seat  1  is placed into and screwed with the screw  74 . The adjustment cap  4  and the control seat  1  are screwed together by means of the female thread  41  and the male thread  14 . Again, the blocking ring  5  is inserted for creating the control device. The housing  8  is rotatable at the center of the ball seat  811  of the rotational shaft  81  for a multi-direction rotation to achieve a flexible change of the spraying direction. In turning the adjustment cap  4 , the housing  8  is enabled for a forward and a backward movement. A stepless water flow change is created by means that the slope at inner rim thereof is pressed against the adjusting plates  21  of the adjustment head  2 . Consequently, the spraying ways and directions are variable. 
     FIG. 4 shows a perspective exploded view of a third preferred embodiment of the present invention. It&#39;s apparent from FIG. 4 together with FIGS. 4A,  4 B and  4 C, that the above-mentioned control device is joined with another inner sleeve  6 ′, a switching seat  9  and a cap  10 . The inner sleeve  6 ′ is fitted with a spraying opening  62  while the switching seat  9  is provided with three different channels. In turning the switching seat  9 , the water flowing from the opening  71 ′ passes through the channels  93 ,  13 ,  22  to the clearance between the adjusting plates  21  and the push sleeve  3  for spraying outwards while a stepless adjustment can be reached (see FIG.  4 A). Alternatively, the water flows through the channel  92  and sprays through the spraying opening  62  of the inner sleeve  6 ′ (see FIG.  4 B). In addition, the water can flow through the channel  91  to the spraying hole of the cap  10  for spraying outwards (FIG.  4 C). Thus, a multiple change of the water flow is attainable. 
     FIG. 5 shows a perspective exploded view of a fourth preferred embodiment of the present invention. It&#39;s apparent from FIG. 5 together with FIG. 5A that the above-mentioned three-step assembly and the said rotational device are combined for variable switching application. In turning the housing  8 , different spraying directions is attainable; in turning the switching seat  9 , different positions in spraying is achievable; and in turning the adjustment cap  4 , a stepless spraying change of the water flow is reachable. 
     Many changes and modifications in the above-described embodiments of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.